Overview

overview

10

Static

static

10

4f9f63fc9e...33.exe

windows7-x64

10

4f9f63fc9e...33.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-04-2024 22:34

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General

  • Target

    4f9f63fc9e0ac76188596bb2efd3b033.exe

  • Size

    63KB

  • MD5

    4f9f63fc9e0ac76188596bb2efd3b033

  • SHA1

    cde6775e15f73eb512f50ee824550fd64400e1cf

  • SHA256

    b7491f105a9624be5fec6a46e6932074730758bba75a6a7f74ea3e9b4d92eccb

  • SHA512

    cfeb52790f20cc558753b473c02647c6fd7635a302e0481d9d412f5029b2100f834b8c6d3f62baffcfdaeed3e5b40011cc730c6fd0f76f6ac58ae1a5a62f70ba

  • SSDEEP

    1536:4ZeNjfU/cNRPZNg/p6eeiIVrGbbXwuYGCDpqKmY7:4ZeNjfU/clCpDeXGbbXogz

Score
10/10
asyncratvenom clientsrat

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

C2

127.0.0.1:4449

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes
  • delay

    1

  • install

    true

  • install_file

    SVCHOSTER.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 1 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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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\4f9f63fc9e0ac76188596bb2efd3b033.exe
    "C:\Users\Admin\AppData\Local\Temp\4f9f63fc9e0ac76188596bb2efd3b033.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2712
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "SVCHOSTER" /tr '"C:\Users\Admin\AppData\Roaming\SVCHOSTER.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1564
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "SVCHOSTER" /tr '"C:\Users\Admin\AppData\Roaming\SVCHOSTER.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:4456
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp538E.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2056
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1312
      • C:\Users\Admin\AppData\Roaming\SVCHOSTER.exe
        "C:\Users\Admin\AppData\Roaming\SVCHOSTER.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:5044

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\tmp538E.tmp.bat
    Filesize

    153B

    MD5

    9be3b461554d797c678ad14ef3d2b6c0

    SHA1

    4cfbafbb374d03439160ade8ee88ea7efa845319

    SHA256

    0900e883f5925940b06fb545fb3f849915f51c1ff813e3cab7dd574841c88864

    SHA512

    e6736dfef2a03249f5a7c92dc601fa59250bdab9a6929fcd42f27c6b00d4fd8ddb7fe388bcbc263f298376780f5ea18c093f8e7f9c654df81d99e879f7e9d704

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

    63KB

    MD5

    4f9f63fc9e0ac76188596bb2efd3b033

    SHA1

    cde6775e15f73eb512f50ee824550fd64400e1cf

    SHA256

    b7491f105a9624be5fec6a46e6932074730758bba75a6a7f74ea3e9b4d92eccb

    SHA512

    cfeb52790f20cc558753b473c02647c6fd7635a302e0481d9d412f5029b2100f834b8c6d3f62baffcfdaeed3e5b40011cc730c6fd0f76f6ac58ae1a5a62f70ba

    Download Submit
  • memory/2712-0-0x0000000000C90000-0x0000000000CA6000-memory.dmp
    Filesize

    88KB

    Download
  • memory/2712-1-0x00007FFB677A0000-0x00007FFB68261000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/2712-2-0x000000001B930000-0x000000001B940000-memory.dmp
    Filesize

    64KB

    Download
  • memory/2712-7-0x00007FFB7AE90000-0x00007FFB7B085000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/2712-8-0x00007FFB677A0000-0x00007FFB68261000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/5044-13-0x00007FFB5CE00000-0x00007FFB5D8C1000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/5044-14-0x000000001AE00000-0x000000001AE10000-memory.dmp
    Filesize

    64KB

    Download
  • memory/5044-15-0x00007FFB7AE90000-0x00007FFB7B085000-memory.dmp
    Filesize

    2.0MB

    Download
  • memory/5044-16-0x00007FFB5CE00000-0x00007FFB5D8C1000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/5044-17-0x000000001AE00000-0x000000001AE10000-memory.dmp
    Filesize

    64KB

    Download