Overview

overview

10

Static

static

10

c81b9af6fd...0N.exe

windows7-x64

10

c81b9af6fd...0N.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    115s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-07-2024 17:27

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General

  • Target

    c81b9af6fd20ff231e4ec8ce366db0b0N.exe

  • Size

    45KB

  • MD5

    c81b9af6fd20ff231e4ec8ce366db0b0

  • SHA1

    6342a91dd793055d6767259d2b7eaac753e90cf4

  • SHA256

    353120b1c48a0071140cbf448d6e1eb88ebaf80a1bd9b6b7e39da0eeaeac0965

  • SHA512

    92c289265d2c4af7608c4aac9065fbbeb63f473f517df4400c1ed74bc53ebce137d61504005344c80bd3c5a076fff4c7070a6e1b4b957036155505d5958cc61e

  • SSDEEP

    768:uuokxmFTkUE1YAgWUOl1nyamo2qR+1uGJAIGYPPI3njbMgX3i4V30fHjygxmZRRg:uuokxmFTkUMYi1t2HsNx3jbDXSC30fDj

Score
10/10
asyncratdefaultdiscoveryrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

193.23.160.13:7707

Mutex

vyPtzxVUyfQ3

Attributes
  • delay

    3

  • install

    true

  • install_file

    Server-Host.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).

  • 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 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c81b9af6fd20ff231e4ec8ce366db0b0N.exe
    "C:\Users\Admin\AppData\Local\Temp\c81b9af6fd20ff231e4ec8ce366db0b0N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2916
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Server-Host" /tr '"C:\Users\Admin\AppData\Roaming\Server-Host.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3904
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Server-Host" /tr '"C:\Users\Admin\AppData\Roaming\Server-Host.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1072
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB0E1.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1932
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4560
      • C:\Users\Admin\AppData\Roaming\Server-Host.exe
        "C:\Users\Admin\AppData\Roaming\Server-Host.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:3284

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpB0E1.tmp.bat
    Filesize

    155B

    MD5

    7dddf0e6ae0692df9d950c493ac3b1c2

    SHA1

    f1fc72b94ce0c53ec91dd2ee6b5348dfa21ed9cd

    SHA256

    1611d00269d0c8cef4a7844e282dfb769e7dd69f154f119693c96a720b097e35

    SHA512

    6182a6dbb3f1098b7b6beaf6b281fc288c14f9ad08848792454e068604c0a5aea46035fc59d4055ffc92c31c851e730ad83cc163fe99395e7caf95383e051599

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Server-Host.exe
    Filesize

    45KB

    MD5

    c81b9af6fd20ff231e4ec8ce366db0b0

    SHA1

    6342a91dd793055d6767259d2b7eaac753e90cf4

    SHA256

    353120b1c48a0071140cbf448d6e1eb88ebaf80a1bd9b6b7e39da0eeaeac0965

    SHA512

    92c289265d2c4af7608c4aac9065fbbeb63f473f517df4400c1ed74bc53ebce137d61504005344c80bd3c5a076fff4c7070a6e1b4b957036155505d5958cc61e

    Download Submit

  • memory/2916-0-0x000000007496E000-0x000000007496F000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2916-1-0x0000000000F90000-0x0000000000FA2000-memory.dmp

    Filesize

    72KB

    Download

  • memory/2916-2-0x0000000074960000-0x0000000075110000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/2916-3-0x0000000005980000-0x0000000005A1C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/2916-9-0x0000000074960000-0x0000000075110000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/3284-13-0x00000000748C0000-0x0000000075070000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/3284-14-0x00000000748C0000-0x0000000075070000-memory.dmp

    Filesize

    7.7MB

    Download