Overview

overview

10

Static

static

10

81c0798a95...14.exe

windows7-x64

10

81c0798a95...14.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    152s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 15:43

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General

  • Target

    81c0798a953e92757be93a26186fc240ed0a0c5e9c8787b549b0bc877e5e5f14.exe

  • Size

    1004KB

  • MD5

    a60109684df6f7ee0d7f942956464212

  • SHA1

    4262a7dfff7827f3cc3144c5334d28bfab5c8594

  • SHA256

    81c0798a953e92757be93a26186fc240ed0a0c5e9c8787b549b0bc877e5e5f14

  • SHA512

    cdf617a1825d33e0a3c32557003214f0e662f3c40709c29e21cf02c6bc6f75ce1299aea1606c9ed3c12aa5b756472285ecb34e22c33c7bb10fd7a191176b00b7

  • SSDEEP

    24576:8Z1xuVVjfFoynPaVBUR8f+kN10EBrC8rnzJ:sQDgok30wC8h

Score
10/10
darkcometguestpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest

C2

rathostyes.no-ip.biz:200

Mutex

DC_MUTEX-H2N8TTG

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    SdzuEnJoJxxU

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    rundll.exe

Signatures

  • Darkcomet

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

    trojanratdarkcomet
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\81c0798a953e92757be93a26186fc240ed0a0c5e9c8787b549b0bc877e5e5f14.exe
    "C:\Users\Admin\AppData\Local\Temp\81c0798a953e92757be93a26186fc240ed0a0c5e9c8787b549b0bc877e5e5f14.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4964
    • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1212

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    Filesize

    1004KB

    MD5

    a60109684df6f7ee0d7f942956464212

    SHA1

    4262a7dfff7827f3cc3144c5334d28bfab5c8594

    SHA256

    81c0798a953e92757be93a26186fc240ed0a0c5e9c8787b549b0bc877e5e5f14

    SHA512

    cdf617a1825d33e0a3c32557003214f0e662f3c40709c29e21cf02c6bc6f75ce1299aea1606c9ed3c12aa5b756472285ecb34e22c33c7bb10fd7a191176b00b7

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    Filesize

    1004KB

    MD5

    a60109684df6f7ee0d7f942956464212

    SHA1

    4262a7dfff7827f3cc3144c5334d28bfab5c8594

    SHA256

    81c0798a953e92757be93a26186fc240ed0a0c5e9c8787b549b0bc877e5e5f14

    SHA512

    cdf617a1825d33e0a3c32557003214f0e662f3c40709c29e21cf02c6bc6f75ce1299aea1606c9ed3c12aa5b756472285ecb34e22c33c7bb10fd7a191176b00b7

    Download Submit
  • memory/1212-135-0x0000000000000000-mapping.dmp
    Download