Overview

overview

10

Static

static

3

dd095f4e5b...f9.exe

windows7-x64

10

dd095f4e5b...f9.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    dd095f4e5b447373d0159e35e3e9a7cd12b30d2225743b4132004ff1d1376cf9.exe

  • Size

    3.5MB

  • Sample

    240615-cyr64swene

  • MD5

    8a6607f6727f04bc2d700ab5f71a349f

  • SHA1

    9af1c2b76477e9f417d563cfe600bdce227987ac

  • SHA256

    dd095f4e5b447373d0159e35e3e9a7cd12b30d2225743b4132004ff1d1376cf9

  • SHA512

    3248d452ea3103a8db0a20898b7cb02195700194781152fae60eebc7f38fad422c1abd65ff32cff0b32cb8b98a0e9638ceae8fc1895b8b31d18250cfb95d07a3

  • SSDEEP

    98304:kAI+3RFiuGHYZMHKpiqTQtrPPSrRYTT4VlZMNdnCx+XxydsuV9ssSV:jt3R9YZRqKzPSNnVlZInlwFkn

Score
10/10
asyncratnjratremcosdefaultkgb-2024t1-2024discoveryevasionexecutionpersistencerattrojan

Malware Config

Extracted

Family

remcos

Botnet

KGB-2024

C2

alice2019.myftp.biz:2525

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-DO2MY2

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Extracted

Family

njrat

Version

0.7d

Botnet

T1-2024

C2

Alice2019.myftp.biz:5552

Mutex

3cec14c682a69cb8fafb5026acd55133

Attributes
  • reg_key

    3cec14c682a69cb8fafb5026acd55133

  • splitter

    Y262SUCZ4UJJ

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

alice2019.myftp.biz:7707

Mutex

GmT0S52TfMTy

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      dd095f4e5b447373d0159e35e3e9a7cd12b30d2225743b4132004ff1d1376cf9.exe

    • Size

      3.5MB

    • MD5

      8a6607f6727f04bc2d700ab5f71a349f

    • SHA1

      9af1c2b76477e9f417d563cfe600bdce227987ac

    • SHA256

      dd095f4e5b447373d0159e35e3e9a7cd12b30d2225743b4132004ff1d1376cf9

    • SHA512

      3248d452ea3103a8db0a20898b7cb02195700194781152fae60eebc7f38fad422c1abd65ff32cff0b32cb8b98a0e9638ceae8fc1895b8b31d18250cfb95d07a3

    • SSDEEP

      98304:kAI+3RFiuGHYZMHKpiqTQtrPPSrRYTT4VlZMNdnCx+XxydsuV9ssSV:jt3R9YZRqKzPSNnVlZInlwFkn

    Score
    10/10
    asyncratnjratremcosdefaultkgb-2024t1-2024discoveryevasionexecutionpersistencerattrojan

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

      ratasyncrat

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

      ratremcos

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

      trojannjrat

    • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

    • Detects executables packed with or use KoiVM

    • Detects file containing reversed ASEP Autorun registry keys

    • Modifies Windows Firewall

      evasion

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

2
T1059

PowerShell

1
T1059.001

JavaScript

1
T1059.007

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

3
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks