Overview

overview

10

Static

static

10

fa77365a2b...98.exe

windows7_x64

10

fa77365a2b...98.exe

windows10_x64

10

Analysis

  • max time kernel
    136s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    05-05-2021 02:07

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General

  • Target

    fa77365a2b757aa8e3c0dea845aeb2e0ac77ab0f6138c140fd165da72ebbf098.exe

  • Size

    658KB

  • MD5

    d3d964677264a3cb1c7a6a4e507f513d

  • SHA1

    5a725d084eb47e796fba25498095be7c0f49061b

  • SHA256

    fa77365a2b757aa8e3c0dea845aeb2e0ac77ab0f6138c140fd165da72ebbf098

  • SHA512

    87c8100ef3973bda93d327ba90563d9b99fd808bbdfa1b6008b4bf28fd410835141b85016a7eac50133f5c590a5bfceb5e3a702d0b463d6a2b09ade26687c6a6

Score
10/10
darkcometguest16_minpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

127.0.0.1:1604

Mutex

DCMIN_MUTEX-ZAM848X

Attributes
  • InstallPath

    DCSCMIN\IMDCSC.exe

  • gencode

    Lwy69h3CzB9T

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    DarkComet RAT

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

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

  • 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\fa77365a2b757aa8e3c0dea845aeb2e0ac77ab0f6138c140fd165da72ebbf098.exe
    "C:\Users\Admin\AppData\Local\Temp\fa77365a2b757aa8e3c0dea845aeb2e0ac77ab0f6138c140fd165da72ebbf098.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4016
    • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
      "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:640

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

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
    MD5

    d3d964677264a3cb1c7a6a4e507f513d

    SHA1

    5a725d084eb47e796fba25498095be7c0f49061b

    SHA256

    fa77365a2b757aa8e3c0dea845aeb2e0ac77ab0f6138c140fd165da72ebbf098

    SHA512

    87c8100ef3973bda93d327ba90563d9b99fd808bbdfa1b6008b4bf28fd410835141b85016a7eac50133f5c590a5bfceb5e3a702d0b463d6a2b09ade26687c6a6

    Download Submit
  • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
    MD5

    d3d964677264a3cb1c7a6a4e507f513d

    SHA1

    5a725d084eb47e796fba25498095be7c0f49061b

    SHA256

    fa77365a2b757aa8e3c0dea845aeb2e0ac77ab0f6138c140fd165da72ebbf098

    SHA512

    87c8100ef3973bda93d327ba90563d9b99fd808bbdfa1b6008b4bf28fd410835141b85016a7eac50133f5c590a5bfceb5e3a702d0b463d6a2b09ade26687c6a6

    Download Submit
  • memory/640-115-0x0000000000000000-mapping.dmp
    Download
  • memory/640-118-0x00000000021B0000-0x00000000021B1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4016-114-0x0000000002380000-0x0000000002381000-memory.dmp
    Filesize

    4KB

    Download