Overview

overview

10

Static

static

10

Client.exe

windows7-x64

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-04-2023 17:57

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General

  • Target

    Client.exe

  • Size

    47KB

  • MD5

    15812c269dcb051b5b23a540696d5288

  • SHA1

    db261e59e91e57ec14f45798bde865c01482ec15

  • SHA256

    3702de50af26c3d4288bb4c9c4bde0f0bb0cd98873393b4e38394c6848fad039

  • SHA512

    059a96840dc099edd5a859668a531068cb45f37dbe00a2a00233b1b581a35fa5cb17c44631dc01e7588370de230b8733a9934bbfb115d159417c72efba6346ba

  • SSDEEP

    768:xOduRtILkWAA+jiFtelDSN+iV08YbygeiCPdYPy22pvEgK/JLZVc6KN:8duNoFtKDs4zb1omJ2pnkJLZVclN

Score
10/10
asyncratsystemrat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

System

C2

147.185.221.180:1491

Mutex

llfesnjkqacrdhbtbu

Attributes
  • delay

    1

  • install

    true

  • install_file

    THASUPREMETROJAN.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Async RAT payload 3 IoCs
    rat
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2604
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "THASUPREMETROJAN" /tr '"C:\Users\Admin\AppData\Roaming\THASUPREMETROJAN.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2276
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "THASUPREMETROJAN" /tr '"C:\Users\Admin\AppData\Roaming\THASUPREMETROJAN.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:3560
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp76CB.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1428
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:568
      • C:\Users\Admin\AppData\Roaming\THASUPREMETROJAN.exe
        "C:\Users\Admin\AppData\Roaming\THASUPREMETROJAN.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4380

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

2
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\tmp76CB.tmp.bat
    Filesize

    160B

    MD5

    593b2008650b9f4e650747ed6d993bf4

    SHA1

    692ca1c9189a318c86400c9c8c63437ed5f1f64a

    SHA256

    7f13133f05ea3a8238235b0abfc08432ae60d5684779bbbd54cfe698f61c4a7c

    SHA512

    0270ea3e796f6ccac1d1587850dccd93d0a6f3535babe7b32d7f4f8774d2022ee3afc93fc48c5ceeb6dffb199b4c5bf16f64e1fc1c9cf7ead6714f9f6e2213e9

    Download Submit
  • C:\Users\Admin\AppData\Roaming\THASUPREMETROJAN.exe
    Filesize

    47KB

    MD5

    15812c269dcb051b5b23a540696d5288

    SHA1

    db261e59e91e57ec14f45798bde865c01482ec15

    SHA256

    3702de50af26c3d4288bb4c9c4bde0f0bb0cd98873393b4e38394c6848fad039

    SHA512

    059a96840dc099edd5a859668a531068cb45f37dbe00a2a00233b1b581a35fa5cb17c44631dc01e7588370de230b8733a9934bbfb115d159417c72efba6346ba

    Download Submit
  • C:\Users\Admin\AppData\Roaming\THASUPREMETROJAN.exe
    Filesize

    47KB

    MD5

    15812c269dcb051b5b23a540696d5288

    SHA1

    db261e59e91e57ec14f45798bde865c01482ec15

    SHA256

    3702de50af26c3d4288bb4c9c4bde0f0bb0cd98873393b4e38394c6848fad039

    SHA512

    059a96840dc099edd5a859668a531068cb45f37dbe00a2a00233b1b581a35fa5cb17c44631dc01e7588370de230b8733a9934bbfb115d159417c72efba6346ba

    Download Submit
  • memory/2604-133-0x0000000000250000-0x0000000000262000-memory.dmp
    Filesize

    72KB

    Download
  • memory/2604-134-0x0000000002420000-0x0000000002430000-memory.dmp
    Filesize

    64KB

    Download
  • memory/4380-143-0x000000001BCD0000-0x000000001BCE0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/4380-144-0x000000001BA50000-0x000000001BB9E000-memory.dmp
    Filesize

    1.3MB

    Download
  • memory/4380-145-0x000000001BCD0000-0x000000001BCE0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/4380-147-0x000000001BA50000-0x000000001BB9E000-memory.dmp
    Filesize

    1.3MB

    Download