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Overview

overview

10

Static

static

10

79ad3b97b1...19.exe

windows7-x64

10

79ad3b97b1...19.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    157s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/01/2024, 11:28

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General

  • Target

    79ad3b97b133a46650bd4e9243585e619cb2225a05d8dede6d1aa78a6a54bf19.exe

  • Size

    194KB

  • MD5

    150d0d25b7a369b2b55c7cfbf25a204f

  • SHA1

    225b5a35019cd044dc603d9d997c41065283bfc7

  • SHA256

    79ad3b97b133a46650bd4e9243585e619cb2225a05d8dede6d1aa78a6a54bf19

  • SHA512

    564f39c2a96a0975dd68e75e2398e603c5c5a5b7267c5c53fd83bc8d2326a08c1414ca8fffa311cc8832e0d63a1c5d1cd3a12653b471fe83552e2c641a62189b

  • SSDEEP

    3072:4uiJTUKP2zG0K3buTbSHynFYrNm6+xmfswft:4uiR+Ct3beneR+KV

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

139.180.171.110:22636

139.180.171.110:1604
Mutex

RfO8CsTGr0kh

Attributes
  • delay

    3

  • install

    true

  • install_file

    chrome.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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\79ad3b97b133a46650bd4e9243585e619cb2225a05d8dede6d1aa78a6a54bf19.exe
    "C:\Users\Admin\AppData\Local\Temp\79ad3b97b133a46650bd4e9243585e619cb2225a05d8dede6d1aa78a6a54bf19.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1540
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "chrome" /tr '"C:\Users\Admin\AppData\Roaming\chrome.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4636
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "chrome" /tr '"C:\Users\Admin\AppData\Roaming\chrome.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:4004
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCC68.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3632
      • C:\Users\Admin\AppData\Roaming\chrome.exe
        "C:\Users\Admin\AppData\Roaming\chrome.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1476
  • C:\Windows\SysWOW64\timeout.exe
    timeout 3
    1⤵
    • Delays execution with timeout.exe
    PID:3992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpCC68.tmp.bat
    Filesize

    150B

    MD5

    4fd17a47953a23798b7b65ebbed07d1c

    SHA1

    033ebac5c308b65a7be4e9b3caae93e025237bc2

    SHA256

    2ac8a48bbee7562380d16778232adec3bb45f874fa4b9a77d1597d1e46ccb07e

    SHA512

    957a75d087a7bb4152582c051847cb620e2033052a551b16f546e393d085756443f42b1ba7af08d9ff2d1f4cd8f38aa6304c433b3e11fcff898c475da97e2b81

    Download Submit

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

    194KB

    MD5

    150d0d25b7a369b2b55c7cfbf25a204f

    SHA1

    225b5a35019cd044dc603d9d997c41065283bfc7

    SHA256

    79ad3b97b133a46650bd4e9243585e619cb2225a05d8dede6d1aa78a6a54bf19

    SHA512

    564f39c2a96a0975dd68e75e2398e603c5c5a5b7267c5c53fd83bc8d2326a08c1414ca8fffa311cc8832e0d63a1c5d1cd3a12653b471fe83552e2c641a62189b

    Download Submit

  • memory/1476-13-0x00000000750D0000-0x0000000075880000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/1476-14-0x00000000050C0000-0x00000000050D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/1476-15-0x00000000750D0000-0x0000000075880000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/1476-16-0x00000000050C0000-0x00000000050D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/1540-0-0x0000000075170000-0x0000000075920000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/1540-1-0x0000000000AA0000-0x0000000000AD6000-memory.dmp

    Filesize

    216KB

    Download

  • memory/1540-2-0x0000000005430000-0x0000000005440000-memory.dmp

    Filesize

    64KB

    Download

  • memory/1540-3-0x00000000055E0000-0x000000000567C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/1540-9-0x0000000075170000-0x0000000075920000-memory.dmp

    Filesize

    7.7MB

    Download