Categories: Malware

About “Win32/Agent.ABRB” infection

The Win32/Agent.ABRB 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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What Win32/Agent.ABRB virus can do?

  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Creates RWX memory
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • A process created a hidden window
  • Unconventionial language used in binary resources: Chinese (Simplified)
  • The binary likely contains encrypted or compressed data.
  • Uses Windows utilities for basic functionality
  • Tries to suspend Cuckoo threads to prevent logging of malicious activity
  • Executed a process and injected code into it, probably while unpacking
  • Deletes its original binary from disk
  • A process attempted to delay the analysis task by a long amount of time.
  • Tries to unhook or modify Windows functions monitored by Cuckoo
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
  • Steals private information from local Internet browsers
  • Installs itself for autorun at Windows startup
  • Anomalous binary characteristics
  • Uses suspicious command line tools or Windows utilities

Related domains:

z.whorecord.xyz
a.tomx.xyz
pastebin.com
iek.netlify.com
raw.githubusercontent.com
gitlab.com

How to determine Win32/Agent.ABRB?


File Info:

crc32: 8B3D0636md5: 3a179c339845f6d4381c2539d651481aname: de.jpgsha1: 2c7d82638531caa6263adceb69c54f5466e2cee6sha256: c8c141c0a009b2456a6c733abdc37c7258331e75ad4d7f527b0fa6864c59e6adsha512: 6af72a40288c15adbfdc73b434ab3e9ec639eb16f74de99da9e13c23c2ff40b7663bf5f1f36a1e5a9798c5511d1b74acefdcf912edf054dc45f5171dd899d3b5ssdeep: 196608:mN7AQtoMYFn9DENhtPcAwX2yTRuvTKGZ9JyH6Z3FO6ysh:mft2UtUAwmvKO9Jya5Fphtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Agent.ABRB also known as:

MicroWorld-eScan Trojan.GenericKD.33523557
BitDefenderTheta Gen:NN.ZedlaF.34098.@F8@aizavMoj
ALYac Trojan.GenericKD.33523557
Cylance Unsafe
Sangfor Malware
K7AntiVirus Riskware ( 0040eff71 )
BitDefender Trojan.GenericKD.33523557
K7GW Riskware ( 0040eff71 )
Cybereason malicious.38531c
Invincea heuristic
Symantec ML.Attribute.HighConfidence
APEX Malicious
Paloalto generic.ml
GData Trojan.GenericKD.33523557
Kaspersky Trojan.Win32.SchoolBoy.kde
Alibaba Trojan:Win32/SchoolBoy.e9599c55
NANO-Antivirus Trojan.Win32.SchoolBoy.hecdtc
Avast Win32:Trojan-gen
Tencent Win32.Trojan.Schoolboy.Ljal
Endgame malicious (high confidence)
Emsisoft Trojan.GenericKD.33523557 (B)
F-Secure Trojan.TR/Crypt.ZPACK.Gen
McAfee-GW-Edition BehavesLike.Win32.IStartSurf.tc
Trapmine malicious.high.ml.score
FireEye Generic.mg.3a179c339845f6d4
Sophos Mal/Emogen-E
Ikarus Trojan.Crypt
Cyren W32/Trojan.KHEB-6163
Jiangmin Trojan.Schoolboy.go
Avira TR/Crypt.ZPACK.Gen
Antiy-AVL Trojan[Dropper]/Win32.Agent
AegisLab Trojan.Win32.Malicious.4!c
ZoneAlarm Trojan.Win32.SchoolBoy.kde
Microsoft Trojan:Win32/Occamy.C
TACHYON Trojan/W32.SchoolBoy.10114560
McAfee Artemis!3A179C339845
MAX malware (ai score=80)
VBA32 TScope.Malware-Cryptor.SB
ESET-NOD32 a variant of Win32/Agent.ABRB
TrendMicro-HouseCall TROJ_GEN.R002H0CC720
Rising Trojan.Crypto!8.364 (CLOUD)
SentinelOne DFI – Suspicious PE
Fortinet W32/Agent.ABRB!tr
Ad-Aware Trojan.GenericKD.33523557
AVG Win32:Trojan-gen
Panda Trj/CI.A
CrowdStrike win/malicious_confidence_60% (W)
Qihoo-360 Generic/HEUR/QVM41.2.A437.Malware.Gen

How to remove Win32/Agent.ABRB?

  • 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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