Categories: Malware

Should I remove “Win32/Kryptik.DRSF”?

The Win32/Kryptik.DRSF 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/Kryptik.DRSF virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Behavioural detection: Executable code extraction – unpacking
  • Creates RWX memory
  • Anomalous file deletion behavior detected (10+)
  • Dynamic (imported) function loading detected
  • Performs HTTP requests potentially not found in PCAP.
  • Reads data out of its own binary image
  • Drops a binary and executes it
  • Unconventionial binary language: Polish
  • Unconventionial language used in binary resources: Polish
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Behavior consistent with a dropper attempting to download the next stage.
  • Attempts to modify proxy settings
  • Mimics icon used for popular non-executable file format
  • Anomalous binary characteristics

How to determine Win32/Kryptik.DRSF?


File Info:

name: B5E2F80830BF0DA374A7.mlwpath: /opt/CAPEv2/storage/binaries/f190b8012d0b33897ebacc7f4fa6cb464f2106987f573cf7adc8329b73130b1fcrc32: 67BCF280md5: b5e2f80830bf0da374a77e9d1d717da5sha1: 91f204742e847d63a94eb77003b5b3685787821asha256: f190b8012d0b33897ebacc7f4fa6cb464f2106987f573cf7adc8329b73130b1fsha512: bb77194e7968d51b20750c320c529e184eb445ee07e5c8bfb2c4d75188100feb8319814536ad976bda03b5529b3558c8b30e3ee6220cad98315de5ee0866b75assdeep: 1536:ooQMr1VPQcU4lTmPV/61xonpHmk+VFIV7k7kwy8N6xiJ:71r1BVlqPN61xodIFMA74xitype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T13F63192262D48071E5611F3CD075A6D2066BBE217EF4F08F6E8835EC5F736C06AB9726sha3_384: 50602e7dfb73b61f59b9aec92ba8ad6c58ba668b9fa7ed8415cb9f5c8043f1f505c2e35932d800c478997070c0a2d3c0ep_bytes: e83d280000e9011e0000558bec518b45timestamp: 2015-01-27 13:49:55

Version Info:

CompanyName: AloseeyeFileDescription: CloseeyeFileVersion: 1.1.2.17InternalName: AloseeyeInternalLegalCopyright: LegalTrademarks: OriginalFilename: ProductName: AloseeyeProductVersion: 2.1Translation: 0x0415 0x04e5

Win32/Kryptik.DRSF also known as:

Bkav W32.AIDetect.malware2
MicroWorld-eScan Gen:Trojan.Ipatre.1
CAT-QuickHeal Trojan.Kadena.B4
McAfee Upatre-FACX!B5E2F80830BF
Cylance Unsafe
Zillya Downloader.Upatre.Win32.48106
K7AntiVirus Trojan ( 0056e8371 )
K7GW Trojan ( 0056e8371 )
CrowdStrike win/malicious_confidence_100% (D)
BitDefenderTheta Gen:NN.ZexaF.34114.eu1@aybWVYfG
Cyren W32/S-2ef997de!Eldorado
Symantec Downloader.Upatre!gen5
ESET-NOD32 a variant of Win32/Kryptik.DRSF
Baidu Win32.Trojan.Kryptik.lx
TrendMicro-HouseCall TROJ_UPATRE.SM37
Kaspersky Trojan-Downloader.Win32.Upatre.eguw
BitDefender Gen:Trojan.Ipatre.1
NANO-Antivirus Trojan.Win32.Upatre.duzizn
Avast Win32:Malware-gen
Tencent Trojan-Downloader.Win32.Waski.16000151
Ad-Aware Gen:Trojan.Ipatre.1
Sophos ML/PE-A + Mal/Upatre-V
Comodo TrojWare.Win32.TrojanDownloader.Upatre.EMD@5syzmz
DrWeb Trojan.DownLoader15.52932
VIPRE Trojan-Downloader.Win32.Upatre.tfl (v)
TrendMicro TROJ_UPATRE.SM37
McAfee-GW-Edition Upatre-FACX!B5E2F80830BF
FireEye Generic.mg.b5e2f80830bf0da3
Emsisoft Gen:Trojan.Ipatre.1 (B)
Ikarus Trojan-Downloader.Win32.Waski
GData Win32.Trojan.Kryptik.CI
Jiangmin TrojanDownloader.Upatre.tho
Avira TR/Crypt.XPACK.Gen2
MAX malware (ai score=81)
Antiy-AVL Trojan/Generic.ASMalwS.133825B
Arcabit Trojan.Ipatre.1
APEX Malicious
Microsoft Trojan:Win32/Sabsik.FL.B!ml
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Upatre.R164221
Acronis suspicious
VBA32 TrojanDownloader.Upatre
ALYac Gen:Trojan.Ipatre.1
Malwarebytes Trojan.Dropper
Rising Trojan.Kryptik!1.A0CC (RDMK:cmRtazpj2smUWtl8WdLkPNLokz+3)
Yandex Trojan.GenAsa!5bOQjy6rM5k
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Upatre.Gen
Fortinet W32/Kryptic.ABGK!tr
AVG Win32:Malware-gen
Cybereason malicious.830bf0
Panda Trj/Genetic.gen

How to remove Win32/Kryptik.DRSF?

  • 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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