Overview

overview

10

Static

static

10

3df5b2d8fa...fb.exe

windows7-x64

10

3df5b2d8fa...fb.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    140s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-01-2024 01:16

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General

  • Target

    3df5b2d8fa12771d01180865d86b83385535794b18232cca17e5a7e3fac585fb.exe

  • Size

    73KB

  • MD5

    38312527c8f936445c85e7ddde36f420

  • SHA1

    725a7f7522e907878eb84456ccb0424332b5cdd6

  • SHA256

    3df5b2d8fa12771d01180865d86b83385535794b18232cca17e5a7e3fac585fb

  • SHA512

    b748a3c76aaeefe29ca856ebbe49b7e316c992af399e6678bb43e0bef297e03cf0144b06cad64a9c46c6a2950e38036a07bd9e3dc23cc67f1b63702153fc38d0

  • SSDEEP

    1536:6aUqAcxVMW7eTmJ9rxjJTkdK4WaxHdSzPMwy/eqmmRhdWVH1bfbCeZkwzUIbVclN:6aUTcxVMW7eiJ9rxjJTkdK4WaP0PMwh6

Score
10/10
asyncratexodusrat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.2

Botnet

Exodus

C2

91.92.255.187:4449

Mutex

ypyertvpyqfr

Attributes
  • delay

    1

  • install

    true

  • install_file

    chromeupdate.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 2 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).

  • 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 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 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\3df5b2d8fa12771d01180865d86b83385535794b18232cca17e5a7e3fac585fb.exe
    "C:\Users\Admin\AppData\Local\Temp\3df5b2d8fa12771d01180865d86b83385535794b18232cca17e5a7e3fac585fb.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2888
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "chromeupdate" /tr '"C:\Users\Admin\AppData\Roaming\chromeupdate.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2368
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "chromeupdate" /tr '"C:\Users\Admin\AppData\Roaming\chromeupdate.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:4500
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp444C.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2436
      • C:\Users\Admin\AppData\Roaming\chromeupdate.exe
        "C:\Users\Admin\AppData\Roaming\chromeupdate.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4800
  • C:\Windows\system32\timeout.exe
    timeout 3
    1⤵
    • Delays execution with timeout.exe
    PID:4004

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp444C.tmp.bat
    Filesize

    156B

    MD5

    3b29e8f2e6d016c9d69d5ec8409fc917

    SHA1

    725e45700c146a76081901e2e7ab5e164bf9302f

    SHA256

    d82e5eef1c94bd37a8352f184a06348c56d1642a8c0f75a55fc18015145144a8

    SHA512

    5818fe369c5504b5e5132936a9c196100cd7a5f0bc06851fcb9b4b421727b65f8f7a77fe4b77ea7120cf2c51b484d12185c0774ba379fac85c19cf0f61615dcf

    Download Submit
  • C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf
    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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

    73KB

    MD5

    38312527c8f936445c85e7ddde36f420

    SHA1

    725a7f7522e907878eb84456ccb0424332b5cdd6

    SHA256

    3df5b2d8fa12771d01180865d86b83385535794b18232cca17e5a7e3fac585fb

    SHA512

    b748a3c76aaeefe29ca856ebbe49b7e316c992af399e6678bb43e0bef297e03cf0144b06cad64a9c46c6a2950e38036a07bd9e3dc23cc67f1b63702153fc38d0

    Download Submit
  • memory/2888-0-0x00000000009B0000-0x00000000009C8000-memory.dmp
    Filesize

    96KB

    Download
  • memory/2888-2-0x00007FFD831E0000-0x00007FFD83CA1000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/2888-3-0x000000001B680000-0x000000001B690000-memory.dmp
    Filesize

    64KB

    Download
  • memory/2888-10-0x00007FFD831E0000-0x00007FFD83CA1000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/2888-8-0x00007FFDA1450000-0x00007FFDA1645000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/4800-15-0x00007FFD82BA0000-0x00007FFD83661000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/4800-16-0x0000000002DF0000-0x0000000002E00000-memory.dmp
    Filesize

    64KB

    Download
  • memory/4800-17-0x00007FFD82BA0000-0x00007FFD83661000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/4800-18-0x0000000002DF0000-0x0000000002E00000-memory.dmp
    Filesize

    64KB

    Download