Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-12-2024 14:05

General

  • Target

    ea568b732e66798cdc9f97f736cc77142d08e1996b7f5d6a996d9b941083e03c.exe

  • Size

    45KB

  • MD5

    d3bb7d0cce1e7a1a1884f25d2a5370d2

  • SHA1

    ebc5d5104e8de6a53aef7f5d50f44925070a4085

  • SHA256

    ea568b732e66798cdc9f97f736cc77142d08e1996b7f5d6a996d9b941083e03c

  • SHA512

    dcc630bd534043caf4c54e5da7fe2daccc64e213b0d2f4dd8bbc13174de3768802e1ea603a1f0584687d0d20d750e96dcd9ec2b46401a442d6a3943972142e06

  • SSDEEP

    768:hu4f9TskvpDWUPANxmo2qbgY8Vq0H9OPIozjbmgX3iEzO/uoXXgxMqJvsZzBDZ7r:hu4f9TswI27ss3o3b5XS8O/XJ7d7r

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

services

C2

shadowdx.duckdns.org:8808

Mutex

windows services

Attributes
  • delay

    3

  • install

    true

  • install_file

    services.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\ea568b732e66798cdc9f97f736cc77142d08e1996b7f5d6a996d9b941083e03c.exe
    "C:\Users\Admin\AppData\Local\Temp\ea568b732e66798cdc9f97f736cc77142d08e1996b7f5d6a996d9b941083e03c.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4020
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "services" /tr '"C:\Users\Admin\AppData\Roaming\services.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3380
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "services" /tr '"C:\Users\Admin\AppData\Roaming\services.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3940
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBECC.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3100
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4132
      • C:\Users\Admin\AppData\Roaming\services.exe
        "C:\Users\Admin\AppData\Roaming\services.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:4648

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    152B

    MD5

    4c92935306f21c038171af94e08a118c

    SHA1

    9528ed683b8c039d09c96e1b721eaa1180bd8fb5

    SHA256

    e76fd73198e06d394fba3acd34e89839568344d1edcbdad286d955f922ad807e

    SHA512

    126cddb9661d86afd336832c92011d8c7116956211784048317fbeb7d91aea303a5b4efb22df331d91d8fcadf6c0caa83da7728eb4f4b502b0b0a2b634bd167d

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

    Filesize

    45KB

    MD5

    d3bb7d0cce1e7a1a1884f25d2a5370d2

    SHA1

    ebc5d5104e8de6a53aef7f5d50f44925070a4085

    SHA256

    ea568b732e66798cdc9f97f736cc77142d08e1996b7f5d6a996d9b941083e03c

    SHA512

    dcc630bd534043caf4c54e5da7fe2daccc64e213b0d2f4dd8bbc13174de3768802e1ea603a1f0584687d0d20d750e96dcd9ec2b46401a442d6a3943972142e06

  • memory/4020-0-0x000000007505E000-0x000000007505F000-memory.dmp

    Filesize

    4KB

  • memory/4020-1-0x0000000000BA0000-0x0000000000BB2000-memory.dmp

    Filesize

    72KB

  • memory/4020-2-0x0000000075050000-0x0000000075800000-memory.dmp

    Filesize

    7.7MB

  • memory/4020-3-0x00000000055A0000-0x000000000563C000-memory.dmp

    Filesize

    624KB

  • memory/4020-8-0x0000000075050000-0x0000000075800000-memory.dmp

    Filesize

    7.7MB

  • memory/4648-13-0x0000000074FA0000-0x0000000075750000-memory.dmp

    Filesize

    7.7MB

  • memory/4648-14-0x0000000074FA0000-0x0000000075750000-memory.dmp

    Filesize

    7.7MB