Overview

overview

10

Static

static

10

Shellbag anylizer.exe

windows7-x64

10

Shellbag anylizer.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    06-08-2024 23:51

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General

  • Target

    Shellbag anylizer.exe

  • Size

    237KB

  • MD5

    52eb3517bc8917d50d5426bece8fe91c

  • SHA1

    155edb28b839902d53051e3d3e442896a6ca54e0

  • SHA256

    7caa89af07680e877b3bdef6b354687b3540dffe556ad9e8797f111aff3b784a

  • SHA512

    de247dbb553d7bd910c01abf8a26c675d2fac68bdd64b7d6539d91940f35aef9ed913a150d9b7153f44ad3c23056461b8d92b50ccf841f93a09e0f57f3e75096

  • SSDEEP

    6144:PJLbLwF9kfK8rpClz0KBb6o589GHWHWujiSPbQ:PJdgBuj/Ps

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

Attributes
  • delay

    1

  • install

    true

  • install_file

    update.exe

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/m5mgzzdQ

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • Executes dropped EXE 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 15 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\Shellbag anylizer.exe
    "C:\Users\Admin\AppData\Local\Temp\Shellbag anylizer.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2084
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2384
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2704
    • C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpA3FD.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3064
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2828
      • C:\Users\Admin\AppData\Roaming\update.exe
        "C:\Users\Admin\AppData\Roaming\update.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2820

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabD941.tmp
    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\tmpA3FD.tmp.bat
    Filesize

    150B

    MD5

    e8595474afdbd958f3bf1f880c3088ec

    SHA1

    695087dedbd24192a6fcd767c719d250d14ee28a

    SHA256

    34f05030d8986d9c9a63c032a0540918b9dd6f8086eeaaf08af4322d51f51a4d

    SHA512

    1819204ddd7e91989591923d8d63c6d6cbb2941edc30537831902d1f904be6a7be2d05cbc5864a05e627ddbc6388ecb0f923da56b5bd3e213182d7f87b4f5969

    Download Submit

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

    237KB

    MD5

    52eb3517bc8917d50d5426bece8fe91c

    SHA1

    155edb28b839902d53051e3d3e442896a6ca54e0

    SHA256

    7caa89af07680e877b3bdef6b354687b3540dffe556ad9e8797f111aff3b784a

    SHA512

    de247dbb553d7bd910c01abf8a26c675d2fac68bdd64b7d6539d91940f35aef9ed913a150d9b7153f44ad3c23056461b8d92b50ccf841f93a09e0f57f3e75096

    Download Submit

  • memory/2084-0-0x000007FEF60E3000-0x000007FEF60E4000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2084-1-0x00000000001E0000-0x0000000000222000-memory.dmp

    Filesize

    264KB

    Download

  • memory/2084-2-0x000007FEF60E0000-0x000007FEF6ACC000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/2084-3-0x000007FEF60E0000-0x000007FEF6ACC000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/2084-12-0x000007FEF60E0000-0x000007FEF6ACC000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/2820-17-0x0000000000EA0000-0x0000000000EE2000-memory.dmp

    Filesize

    264KB

    Download