Analysis

  • max time kernel
    38s
  • max time network
    60s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/04/2025, 19:27

General

  • Target

    e4be2ae586aa74b5ff7bf0166ae2b1cdb4d4ac8b612157d675e305dcc42b8d06.exe

  • Size

    45KB

  • MD5

    e00b88ce9bb80f4c86ca1c67da83e17d

  • SHA1

    0e00c59aa9f8db1b3be212c3867fcec9245254e8

  • SHA256

    e4be2ae586aa74b5ff7bf0166ae2b1cdb4d4ac8b612157d675e305dcc42b8d06

  • SHA512

    dbd463b74733fcb6854b30addf77858d6d8214bf3498ac811b29361fbe50548f55f9eeecc41b2be67537897f56d96b1d6f2662fab29b83145a6c7d588335002d

  • SSDEEP

    768:Ju6XdTvER+SWUk6P4mo2qbEKjPGaG6PIyzjbFgX3iMIfd0wxiABDZLl:Ju6XdTv2S2RKTkDy3bCXSMIF0wUWdLl

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

10.81.36.45:6606

Mutex

LfKMo3uFrnKq

Attributes
  • delay

    3

  • install

    true

  • install_file

    test.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Async RAT payload 1 IoCs
  • 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.

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

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\e4be2ae586aa74b5ff7bf0166ae2b1cdb4d4ac8b612157d675e305dcc42b8d06.exe
    "C:\Users\Admin\AppData\Local\Temp\e4be2ae586aa74b5ff7bf0166ae2b1cdb4d4ac8b612157d675e305dcc42b8d06.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1268
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "test" /tr '"C:\Users\Admin\AppData\Roaming\test.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4816
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "test" /tr '"C:\Users\Admin\AppData\Roaming\test.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4744
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp77C0.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2800
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4564
      • C:\Users\Admin\AppData\Roaming\test.exe
        "C:\Users\Admin\AppData\Roaming\test.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:5008

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp77C0.tmp.bat

    Filesize

    148B

    MD5

    0062e0664f53fde8884e73f2c699bad5

    SHA1

    edda6b4675a878d7ef5e1ebe3c890ac3afd7548a

    SHA256

    17ff9ff7c46a195d4e3d6fd37f0838b4f0f9f2b87b376d0401a688476c6d94f5

    SHA512

    bbafa4457449091c78e9af496158d2e684b8878337db9c5a0b79975df614345ea28552f38763f56c09b376213572b0a0e644020fd05cb82e95e7e61c0ba99262

  • C:\Users\Admin\AppData\Roaming\test.exe

    Filesize

    45KB

    MD5

    e00b88ce9bb80f4c86ca1c67da83e17d

    SHA1

    0e00c59aa9f8db1b3be212c3867fcec9245254e8

    SHA256

    e4be2ae586aa74b5ff7bf0166ae2b1cdb4d4ac8b612157d675e305dcc42b8d06

    SHA512

    dbd463b74733fcb6854b30addf77858d6d8214bf3498ac811b29361fbe50548f55f9eeecc41b2be67537897f56d96b1d6f2662fab29b83145a6c7d588335002d

  • memory/1268-0-0x000000007521E000-0x000000007521F000-memory.dmp

    Filesize

    4KB

  • memory/1268-1-0x0000000000810000-0x0000000000822000-memory.dmp

    Filesize

    72KB

  • memory/1268-2-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1268-3-0x00000000051C0000-0x000000000525C000-memory.dmp

    Filesize

    624KB

  • memory/1268-8-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-13-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-14-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-15-0x0000000075210000-0x00000000759C0000-memory.dmp

    Filesize

    7.7MB