Overview

overview

10

Static

static

10

a72a243ca8...06.exe

windows7-x64

10

a72a243ca8...06.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    144s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-12-2024 04:11

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General

  • Target

    a72a243ca862f09c197a135b15cc3081b7635cb1c78bb7f92daa932b78754b06.exe

  • Size

    51KB

  • MD5

    7bc2e6b25bfafe16708196e844dc1476

  • SHA1

    4689ebd58df0eaa8f21191f1e0aae0259a2a7497

  • SHA256

    a72a243ca862f09c197a135b15cc3081b7635cb1c78bb7f92daa932b78754b06

  • SHA512

    aef4619973c3d71ce6eda4f4c1d4be2dcd88fceaf48bf2b4efde7c762d3ac45a3d4900b33aea04dfbd40079a279efd7ea2505056f0828cdb364ee478627e9e6a

  • SSDEEP

    1536:Wuir1TUKP2nwcvaOgnQtobdZ/CyiUdF2:WuiJTUKP2rS3n5bd/j2

Score
10/10
asyncratdefaultdiscoveryrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808
Mutex

8TdjLZxCzOjI

Attributes
  • delay

    3

  • install

    true

  • install_file

    client.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Asyncrat family
    asyncrat
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a72a243ca862f09c197a135b15cc3081b7635cb1c78bb7f92daa932b78754b06.exe
    "C:\Users\Admin\AppData\Local\Temp\a72a243ca862f09c197a135b15cc3081b7635cb1c78bb7f92daa932b78754b06.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5004
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "client" /tr '"C:\Users\Admin\AppData\Roaming\client.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4600
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "client" /tr '"C:\Users\Admin\AppData\Roaming\client.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2960
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8983.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4296
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4204
      • C:\Users\Admin\AppData\Roaming\client.exe
        "C:\Users\Admin\AppData\Roaming\client.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1684

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8983.tmp.bat
    Filesize

    150B

    MD5

    ac88575206dec160529211ac6b19e7ee

    SHA1

    89071c36e1881e6b798448bada87de519413566b

    SHA256

    6a78040b06eae7a135ce835f7ee53d6fb0999364cc3b59acf2266fd1b00e2f3f

    SHA512

    2aa2dde0921fd30d026b45859b4454fe8228acf87ab0f3c4292dd28712adacb90e5c24e19134aa509d3cc04ead942c3d091d788c44b2fad28fc219d2da9596d1

    Download Submit

  • C:\Users\Admin\AppData\Roaming\client.exe
    Filesize

    51KB

    MD5

    7bc2e6b25bfafe16708196e844dc1476

    SHA1

    4689ebd58df0eaa8f21191f1e0aae0259a2a7497

    SHA256

    a72a243ca862f09c197a135b15cc3081b7635cb1c78bb7f92daa932b78754b06

    SHA512

    aef4619973c3d71ce6eda4f4c1d4be2dcd88fceaf48bf2b4efde7c762d3ac45a3d4900b33aea04dfbd40079a279efd7ea2505056f0828cdb364ee478627e9e6a

    Download Submit

  • memory/1684-13-0x0000000074FF0000-0x00000000757A0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/1684-14-0x0000000074FF0000-0x00000000757A0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/5004-0-0x00000000750AE000-0x00000000750AF000-memory.dmp

    Filesize

    4KB

    Download

  • memory/5004-1-0x00000000009C0000-0x00000000009D2000-memory.dmp

    Filesize

    72KB

    Download

  • memory/5004-2-0x00000000750A0000-0x0000000075850000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/5004-3-0x00000000052D0000-0x000000000536C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/5004-8-0x00000000750A0000-0x0000000075850000-memory.dmp

    Filesize

    7.7MB

    Download