Overview

overview

10

Static

static

10

Mega_joiner.exe

windows10-2004-x64

10

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General

  • Target

    Mega_joiner.exe

  • Size

    2.0MB

  • Sample

    220817-pz24xsfffk

  • MD5

    fa70cd866b1adbf3df6c6789bfae201e

  • SHA1

    f97b81f64d2af855ab2f903af64ddfb1eeabd3e4

  • SHA256

    0345f6737ce5fd92f26f52bc57b43139abe9bd32acab831644f4054c45bee75c

  • SHA512

    b046c0a18f20531c008c0213f5b439531186903a3012b86489a1b3b0d582b5d7da90b695bbfccdbf597266804295d4dbd30eaab86607d2e169d094eb21b64f19

  • SSDEEP

    49152:GnsHyjtk2MYC5GDbCUumo2R5G81p8AwUBj:Gnsmtk2aCCfL2RT1prJ

Score
10/10
darkcometxmrigguest16discoveryevasionminerpersistenceratspywarestealertrojanupx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

mrchamp.hopto.org:1604

Mutex

DC_MUTEX-M70B9H0

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    RxDT39JFfM7e

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      Mega_joiner.exe

    • Size

      2.0MB

    • MD5

      fa70cd866b1adbf3df6c6789bfae201e

    • SHA1

      f97b81f64d2af855ab2f903af64ddfb1eeabd3e4

    • SHA256

      0345f6737ce5fd92f26f52bc57b43139abe9bd32acab831644f4054c45bee75c

    • SHA512

      b046c0a18f20531c008c0213f5b439531186903a3012b86489a1b3b0d582b5d7da90b695bbfccdbf597266804295d4dbd30eaab86607d2e169d094eb21b64f19

    • SSDEEP

      49152:GnsHyjtk2MYC5GDbCUumo2R5G81p8AwUBj:Gnsmtk2aCCfL2RT1prJ

    Score
    10/10
    darkcometxmrigguest16discoveryevasionminerpersistenceratspywarestealertrojanupx

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Modifies security service

      evasion

    • Windows security bypass

      evasiontrojan

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

      minerxmrig

    • XMRig Miner payload

      miner

    • Disables RegEdit 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

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

    behavioral1

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

2
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

7
T1112

Disabling Security Tools

2
T1089

Hidden Files and Directories

2
T1158

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Tasks