Overview

overview

10

Static

static

10

f4876b06da...c7.exe

windows7-x64

10

f4876b06da...c7.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    137s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-08-2024 02:17

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General

  • Target

    f4876b06da96639271728c1c65aff064d45de3307a09f17d04686c0bf410bcc7.exe

  • Size

    48KB

  • MD5

    a41754aa9cfd098e0f31fce03ab38166

  • SHA1

    22946a1c7828ab7a5f218b6a815350fc0e1d1c1b

  • SHA256

    f4876b06da96639271728c1c65aff064d45de3307a09f17d04686c0bf410bcc7

  • SHA512

    5cc51386415d49e6d4c87111f6674347568047ad3420f8095559f0d077b5f7593506a34d4877765563ff0feccf50c9d1b7501452ab7dc6ce611768571d248cd9

  • SSDEEP

    768:UVNYu9bVIILoech+ri0telDSN+iV08YbygeQVzZE3GdvEgK/JvZVc6KN:UVG7Z0tKDs4zb1lVzZEEnkJvZVclN

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

Mutex

DcRatMutex_qwqdanchun

Attributes
  • c2_url_file

    https://Pastebin.com/raw/fevFJe98

  • delay

    1

  • install

    true

  • install_file

    nigger.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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 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\f4876b06da96639271728c1c65aff064d45de3307a09f17d04686c0bf410bcc7.exe
    "C:\Users\Admin\AppData\Local\Temp\f4876b06da96639271728c1c65aff064d45de3307a09f17d04686c0bf410bcc7.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:344
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "nigger" /tr '"C:\Users\Admin\AppData\Roaming\nigger.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3228
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "nigger" /tr '"C:\Users\Admin\AppData\Roaming\nigger.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4992
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7A41.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4896
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3900
      • C:\Users\Admin\AppData\Roaming\nigger.exe
        "C:\Users\Admin\AppData\Roaming\nigger.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2080

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp7A41.tmp.bat
    Filesize

    150B

    MD5

    838a0a3c4f63b6ce604d492a1697b4fe

    SHA1

    d091531f785a3abcee3c516d64de551e72b6758c

    SHA256

    d3b4ac16581f5964b8cba9bb9dc75b678c2cf9909caf20e8c1276dc03a2318e2

    SHA512

    9ee3414b6cc4ed204dca10792d3d490a5a3212ac7c166d932662a88717c806b210db70db243642605a168308bb7acccd99f7b8883bea040b6abc6df7ab968151

    Download Submit

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

    48KB

    MD5

    a41754aa9cfd098e0f31fce03ab38166

    SHA1

    22946a1c7828ab7a5f218b6a815350fc0e1d1c1b

    SHA256

    f4876b06da96639271728c1c65aff064d45de3307a09f17d04686c0bf410bcc7

    SHA512

    5cc51386415d49e6d4c87111f6674347568047ad3420f8095559f0d077b5f7593506a34d4877765563ff0feccf50c9d1b7501452ab7dc6ce611768571d248cd9

    Download Submit

  • memory/344-1-0x0000000000AB0000-0x0000000000AC2000-memory.dmp

    Filesize

    72KB

    Download

  • memory/344-0-0x00007FF8B9233000-0x00007FF8B9235000-memory.dmp

    Filesize

    8KB

    Download

  • memory/344-2-0x00007FF8B9230000-0x00007FF8B9CF1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/344-7-0x00007FF8B9230000-0x00007FF8B9CF1000-memory.dmp

    Filesize

    10.8MB

    Download