Overview

overview

10

Static

static

8

c13f35c0dc...cf.exe

windows7-x64

10

c13f35c0dc...cf.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    c13f35c0dc3c57838ad8166202fe4f1785bed9c8b13ea1c83a4f49c0809254cf

  • Size

    308KB

  • Sample

    221128-ymfvlace79

  • MD5

    733874ca87d54ba711a1a366e9601261

  • SHA1

    69fbaa4bb1f9f4b3736041f374d2f3f108672b38

  • SHA256

    c13f35c0dc3c57838ad8166202fe4f1785bed9c8b13ea1c83a4f49c0809254cf

  • SHA512

    885524d4c8271fc1cc6daf6203abbcb182dcb349b8ddabe87d037a557a84be292a87747cb1271babcce0a51809523edb43cdc358cf8de07140292618b0c7de90

  • SSDEEP

    6144:CcNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0PHQWBDhr3H:CcWkbgTYWnYnt/IDYhPLj

Score
10/10
darkcometramnitusbbankerevasionpersistenceratspywarestealertrojanupxworm

Malware Config

Extracted

Family

darkcomet

Botnet

usb

C2

192.168.1.1:1604

87.252.66.185:1604

192.168.1.4:1604

192.168.1.2:1604

192.168.1.3:1604

192.168.1.5:1604
Mutex

DC_MUTEX-Z28DCY4

Attributes
  • InstallPath

    winlogon/winlogon.exe *32

  • gencode

    FgFBfDLSxflB

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    winlogon.exe *32

Targets

    • Target

      c13f35c0dc3c57838ad8166202fe4f1785bed9c8b13ea1c83a4f49c0809254cf

    • Size

      308KB

    • MD5

      733874ca87d54ba711a1a366e9601261

    • SHA1

      69fbaa4bb1f9f4b3736041f374d2f3f108672b38

    • SHA256

      c13f35c0dc3c57838ad8166202fe4f1785bed9c8b13ea1c83a4f49c0809254cf

    • SHA512

      885524d4c8271fc1cc6daf6203abbcb182dcb349b8ddabe87d037a557a84be292a87747cb1271babcce0a51809523edb43cdc358cf8de07140292618b0c7de90

    • SSDEEP

      6144:CcNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0PHQWBDhr3H:CcWkbgTYWnYnt/IDYhPLj

    Score
    10/10
    darkcometramnitusbbankerevasionpersistenceratspywarestealertrojanupxworm

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Ramnit

      Ramnit is a versatile family that holds viruses, worms, and Trojans.

      trojanspywarestealerwormbankerramnit

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

3
T1112

Hidden Files and Directories

2
T1158

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks