Ransom Trojan

Trojan.Ransom.CryptoLocker.A (B) (file analysis)

Malware Removal

The Trojan.Ransom.CryptoLocker.A (B) 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 Trojan.Ransom.CryptoLocker.A (B) virus can do?

  • Possible date expiration check, exits too soon after checking local time
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • Performs some HTTP requests
  • The binary likely contains encrypted or compressed data.
  • The executable is compressed using UPX
  • Looks up the external IP address
  • Uses Windows utilities for basic functionality
  • Attempts to remove evidence of file being downloaded from the Internet
  • Attempts to delete volume shadow copies
  • Deletes its original binary from disk
  • Network activity contains more than one unique useragent.
  • Installs itself for autorun at Windows startup
  • Exhibits possible ransomware file modification behavior
  • Writes a potential ransom message to disk
  • Attempts to modify proxy settings
  • Creates a copy of itself
  • Connects to Tor Hidden Services through a Tor gateway
  • Creates a known TeslaCrypt/AlphaCrypt ransomware decryption instruction / key file.
  • Uses suspicious command line tools or Windows utilities

Related domains:

ipinfo.io
epmhyca5ol6plmx3.wh47f2as19.com
7tno4hib47vlep5o.7hwr34n18.com
epmhyca5ol6plmx3.tor2web.blutmagie.de
epmhyca5ol6plmx3.tor2web.fi

How to determine Trojan.Ransom.CryptoLocker.A (B)?


File Info:

crc32: 598D144E
md5: a7467b2c7c5440c1ef2785c7598aa8e0
name: A7467B2C7C5440C1EF2785C7598AA8E0.mlw
sha1: f35acb672fd337335f325bb908d58344f7760c85
sha256: b60da0cd24eaeb964294ea9cd5c6846d42b36f3469c4fd08d7263b5811fd150b
sha512: d40f630265cb2ddd988ce8cb240b90c2fc1e2191c0b878f02af4bdd74c72dcef000f1fd944a1ca45e923b5e31aa42d99ba1f6be486298cf2878f6103a287c47d
ssdeep: 3072:X+jtKKOg+TBTq1ebEdLLp4q9HCUJXGq8CD3yFDP:ujtKKaNqcw5Lp48CUJJ8CDi
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: Copyright (C) 2015
InternalName: scan
FileVersion: 1, 0, 0, 1
ProductName: 123asdasd
ProductVersion: 1, 0, 0, 1
FileDescription: 123asdasd
OriginalFilename: 123asdasd
Translation: 0x0409 0x04b0

Trojan.Ransom.CryptoLocker.A (B) also known as:

BkavW32.AIDetect.malware2
DrWebTrojan.Encoder.25454
ClamAVWin.Ransomware.Mikey-9753413-0
CAT-QuickHealRansom.TesCrypt.A.mue
ALYacTrojan.Ransom.CryptoLocker.A
CylanceUnsafe
K7GWTrojan ( 004bcd7c1 )
K7AntiVirusTrojan ( 004bcd7c1 )
ESET-NOD32a variant of Win32/Filecoder.TeslaCrypt.A
APEXMalicious
AvastWin32:Malware-gen
CynetMalicious (score: 100)
KasperskyTrojan-Ransom.Win32.Bitman.ez
BitDefenderTrojan.Ransom.CryptoLocker.A
NANO-AntivirusTrojan.Win32.Bitman.ebsmdf
MicroWorld-eScanTrojan.Ransom.CryptoLocker.A
Ad-AwareTrojan.Ransom.CryptoLocker.A
SophosMal/Behav-031
BitDefenderThetaGen:NN.ZexaF.34142.imKfaGtS1bni
VIPRETrojan.Win32.Generic.pak!cobra
TrendMicroTROJ_CRYPTESLA.SMB
FireEyeGeneric.mg.a7467b2c7c5440c1
EmsisoftTrojan.Ransom.CryptoLocker.A (B)
SentinelOneStatic AI – Suspicious PE
JiangminTrojan.Bitman.adj
AviraHEUR/AGEN.1130306
eGambitUnsafe.AI_Score_97%
Antiy-AVLTrojan/Generic.ASMalwS.181E818
MicrosoftTrojan:Win32/Sabsik.FL.B!ml
ArcabitTrojan.Ransom.CryptoLocker.A
GDataTrojan.Ransom.CryptoLocker.A
MAXmalware (ai score=81)
VBA32Trojan-Ransom.Bitman
MalwarebytesRansom.TeslaCrypt
TrendMicro-HouseCallTROJ_CRYPTESLA.SMB
YandexTrojan.GenAsa!4wpqf7WBSnw
IkarusTrojan.Win32.Injector
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/TeslaCrypt.B!tr.ransom
AVGWin32:Malware-gen

How to remove Trojan.Ransom.CryptoLocker.A (B)?

Trojan.Ransom.CryptoLocker.A (B) removal tool
  • 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.

About the author

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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