Trojan

Trojan.Crypt.Drop (file analysis)

Malware Removal

The Trojan.Crypt.Drop 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.Crypt.Drop virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • NtSetInformationThread: attempt to hide thread from debugger
  • Creates RWX memory
  • Dynamic (imported) function loading detected
  • Expresses interest in specific running processes
  • Reads data out of its own binary image
  • A process created a hidden window
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • Authenticode signature is invalid
  • Uses Windows utilities for basic functionality
  • Uses Windows utilities for basic functionality
  • Detects Sandboxie through the presence of a library
  • Checks for the presence of known windows from debuggers and forensic tools
  • The following process appear to have been packed with Themida: Program_protected.exe
  • Installs itself for autorun at Windows startup
  • Checks the version of Bios, possibly for anti-virtualization
  • Detects VirtualBox through the presence of a registry key
  • Uses suspicious command line tools or Windows utilities

How to determine Trojan.Crypt.Drop?


File Info:

name: 2290B6655C1DF5073D43.mlw
path: /opt/CAPEv2/storage/binaries/e0d51b59fe3686a8ad0a11c8e4da441cae58abaaf786e498605329ba5a915635
crc32: 9A719809
md5: 2290b6655c1df5073d43a5373695d66b
sha1: e94076695b8083169932d704bd12872f5f817184
sha256: e0d51b59fe3686a8ad0a11c8e4da441cae58abaaf786e498605329ba5a915635
sha512: b51eb6c6fc66e1959e5469c371ca556ecd8d013e601d115d8ba7285b49df23bcc8c5afa4e4c856cdaf1fb20f42c645ab8e26fc6487b759fa9882b442735a8274
ssdeep: 98304:xwh3wWLe+sf9FEfhhqsF1eGsW7EHABMs9atSpV7jMR2oPO+wcpdElLCpeMjm:xwhXsfbqhgsfeGNwH+Mw3pVMR1wcMC8
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1A356338257199ED6EA2D31FC0477A3D99F21A617E469B8A38E88E0C7FD31CE1085F417
sha3_384: c2954c35d783bba4a49698981c13dc8d5c764fdb116e35905d27ca2fc055801358cc2e85e7167a6891a0e676f6688e65
ep_bytes: 81ec8401000053565733db6801800000
timestamp: 2020-08-01 02:44:50

Version Info:

0: [No Data]

Trojan.Crypt.Drop also known as:

BkavW32.AIDetect.malware2
Elasticmalicious (moderate confidence)
DrWebTrojan.PackedNET.1302
MicroWorld-eScanIL:Trojan.MSILMamut.350
ALYacIL:Trojan.MSILMamut.350
CylanceUnsafe
K7AntiVirusTrojan ( 005850dc1 )
BitDefenderIL:Trojan.MSILMamut.350
K7GWTrojan ( 005850dc1 )
Cybereasonmalicious.95b808
ArcabitIL:Trojan.MSILMamut.350
SymantecML.Attribute.HighConfidence
ESET-NOD32multiple detections
APEXMalicious
Ad-AwareIL:Trojan.MSILMamut.350
EmsisoftIL:Trojan.MSILMamut.350 (B)
F-SecureHeuristic.HEUR/AGEN.1224689
McAfee-GW-EditionBehavesLike.Win32.Generic.tc
FireEyeGeneric.mg.2290b6655c1df507
AviraHEUR/AGEN.1224689
MAXmalware (ai score=84)
MicrosoftTrojan:Win32/Sabsik.FL.B!ml
GDataIL:Trojan.MSILMamut.350
CynetMalicious (score: 100)
AhnLab-V3Malware/Gen.Reputation.C4222212
Acronissuspicious
McAfeeGenericRXRO-CZ!7E5891CF2DF2
VBA32BScope.Trojan.Sabsik.FL
MalwarebytesTrojan.Crypt.Drop
AVGWin32:Evo-gen [Susp]
AvastWin32:Evo-gen [Susp]

How to remove Trojan.Crypt.Drop?

Trojan.Crypt.Drop 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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