Categories: Backdoor

Backdoor:Win32/Kirts.A malicious file

The Backdoor:Win32/Kirts.A is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
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What Backdoor:Win32/Kirts.A virus can do?

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Attempts to connect to a dead IP:Port (3 unique times)
  • Presents an Authenticode digital signature
  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • At least one IP Address, Domain, or File Name was found in a crypto call
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • A process created a hidden window
  • Drops a binary and executes it
  • Performs some HTTP requests
  • The binary likely contains encrypted or compressed data.
  • Uses Windows utilities for basic functionality
  • Queries information on disks, possibly for anti-virtualization
  • Detects Sandboxie through the presence of a library
  • Detects SunBelt Sandbox through the presence of a library
  • Detects the presence of Wine emulator via function name
  • Attempts to remove evidence of file being downloaded from the Internet
  • Executed a process and injected code into it, probably while unpacking
  • Deletes its original binary from disk
  • Installs itself for autorun at Windows startup
  • Creates a hidden or system file
  • Attempts to modify proxy settings
  • Operates on local firewall’s policies and settings
  • Creates a copy of itself
  • Attempts to disable Windows Defender
  • Attempts to create or modify system certificates
  • Connects to an IRC server, possibly part of a botnet

Related domains:

z.whorecord.xyz
a.tomx.xyz
trikhaus.info
aefhpiaepgfiaeirod.ru
wurzuqeozoueztuzqe.ru
wdokwuroouaklzwudo.ru
abdzwuazduroowdufa.ru
opunamurwueodhsheu.ru
ouagwfuoegfugfgedr.ru
wdfoaeuoaefhoahifd.ru
nkskhifhiwgahoehih.ru
cawawaeadaswadeaef.ru

How to determine Backdoor:Win32/Kirts.A?


File Info:

crc32: B78B2C9Bmd5: 906b5f4e8257f31c6ee80671770c5f1fname: t.exesha1: 55de003840b71b7c917da13c5166d76e24e75861sha256: 57be7db042ed12a36314a2574e13ac384c473f1bb68ebad0d110f9fdfb942642sha512: 1a6e83c486ff40b6f58accbf225af46f96ac51f8ad82b3a41cbe7204ec0348037c7c1a54fcdc2cc2f63af1933e2e126efa84cbc8968e159b347367ec1b678672ssdeep: 3072:8DprG5xjCuztWaCcAX7cbWpBTnokvMvQ1b5TZBXT/FWPImu4mvPDauhHcK:8165ftW7cAYbUF5TZBr4P++Otype: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

0: [No Data]

Backdoor:Win32/Kirts.A also known as:

DrWeb Trojan.DownLoader22.28351
MicroWorld-eScan Gen:Variant.Razy.142902
CAT-QuickHeal Trojan.MSIL
McAfee Trojan-FJMJ!906B5F4E8257
Cylance Unsafe
Zillya Dropper.Sysn.Win32.5445
Sangfor Malware
K7AntiVirus Trojan ( 004fa5a91 )
BitDefender Gen:Variant.Razy.142902
K7GW Trojan ( 004fa5a91 )
Cybereason malicious.e8257f
Arcabit Trojan.Razy.D22E36
TrendMicro TSPY_HPOMANEAT.SM
BitDefenderTheta Gen:NN.ZemsilF.34082.lmX@aK@KRWp
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of MSIL/Kryptik.HDY
TrendMicro-HouseCall TSPY_HPOMANEAT.SM
Avast Win32:DangerousSig [Trj]
Kaspersky HEUR:Trojan.MSIL.Generic
Alibaba Backdoor:Win32/Kirts.b2ab109a
NANO-Antivirus Trojan.Win32.Sysn.egsrno
ViRobot Trojan.Win32.Z.Sysn.189928
Rising Worm.Phorpiex!8.48D (CLOUD)
Endgame malicious (high confidence)
Emsisoft Gen:Variant.Razy.142902 (B)
F-Secure Heuristic.HEUR/AGEN.1024100
VIPRE Trojan.Win32.Generic!BT
Invincea heuristic
McAfee-GW-Edition Trojan-FJMJ!906B5F4E8257
Trapmine malicious.high.ml.score
FireEye Generic.mg.906b5f4e8257f31c
Sophos Troj/MSIL-IDF
Ikarus Backdoor.Win32.Kirts
Jiangmin TrojanDropper.Sysn.dec
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1024100
Fortinet MSIL/Kryptik.HDY!tr
Antiy-AVL Trojan[Dropper]/Win32.Sysn
Microsoft Backdoor:Win32/Kirts.A
ZoneAlarm HEUR:Trojan.MSIL.Generic
AhnLab-V3 Trojan/Win32.Kirts.C1567638
Acronis suspicious
ALYac Gen:Variant.Razy.142902
MAX malware (ai score=100)
Ad-Aware Gen:Variant.Razy.142902
Panda Trj/GdSda.A
APEX Malicious
Tencent Win32.Trojan.Falsesign.Hqvb
Yandex Trojan.DR.Sysn!
SentinelOne DFI – Malicious PE
eGambit Unsafe.AI_Score_100%
GData MSIL.Trojan.Injector.GX
AVG Win32:DangerousSig [Trj]
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Trojan.Dropper.0f5

How to remove Backdoor:Win32/Kirts.A?

  • Download and install GridinSoft Anti-Malware.
  • Open GridinSoft Anti-Malware and perform a “Standard scan“.
  • Move to quarantine” all items.
  • Open “Tools” tab – Press “Reset Browser Settings“.
  • Select proper browser and options – Click “Reset”.
  • Restart your computer.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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