Overview

overview

10

Static

static

10

19e5a79bd2...1c.exe

windows7-x64

10

19e5a79bd2...1c.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    19e5a79bd2bb228fb166be53607fac6a3b48f7730cc4b0dd01e5f0e2f8485d1c

  • Size

    253KB

  • Sample

    220725-cplb7sagcj

  • MD5

    f4a3645aaaa7b14f4dec9a9f2db0040e

  • SHA1

    8430b2a225c8890a354024eb3273e5a21924aac2

  • SHA256

    19e5a79bd2bb228fb166be53607fac6a3b48f7730cc4b0dd01e5f0e2f8485d1c

  • SHA512

    c14c8aeb6147ad25f5089ff275762f21b066e781c7c2777a055adf11c15549e6dee729e577333d1221b6c61d3731c3824aeb0328650103c6edc77bf9a0cb18f1

Score
10/10
darkcometguest16evasionpersistencerattrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:888

Mutex

DC_MUTEX-3Y5WKVN

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    ELdwUcYkBbef

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target

      19e5a79bd2bb228fb166be53607fac6a3b48f7730cc4b0dd01e5f0e2f8485d1c

    • Size

      253KB

    • MD5

      f4a3645aaaa7b14f4dec9a9f2db0040e

    • SHA1

      8430b2a225c8890a354024eb3273e5a21924aac2

    • SHA256

      19e5a79bd2bb228fb166be53607fac6a3b48f7730cc4b0dd01e5f0e2f8485d1c

    • SHA512

      c14c8aeb6147ad25f5089ff275762f21b066e781c7c2777a055adf11c15549e6dee729e577333d1221b6c61d3731c3824aeb0328650103c6edc77bf9a0cb18f1

    Score
    10/10
    darkcometguest16evasionpersistencerattrojanupx

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager via registry modification

      evasion

    • 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
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

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