Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-12-2024 12:40

General

  • Target

    eeeeeeeeeeeeeeeeeeeee.exe

  • Size

    47KB

  • MD5

    70dea4658bea5bf00ef8c0578693d6fa

  • SHA1

    814cf65c3cc2394a8a2bab4997f28c46f1976e41

  • SHA256

    85a8267c923fccae9397ee2f05dead67d8877145b175f6836940a28fa96ca4ae

  • SHA512

    348990ee46dc1d19b7a697b81949b22dbca9af203d9ba2cb06036f82cace988b160a3a45193abf67f014ea2c44db9c4540771c8d4f179f9991cf8754ec563e39

  • SSDEEP

    768:gusPr1TUq7qMFPWUDVGotmo2qzY5HCdS7eU/t+PIG+BXqm0b6nu4tqCy1cftNBDc:gusj1TUfMso2VJT7vtHGK8b6nltWcfRY

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:80

Mutex

wpqzdX1ij9YS

Attributes
  • delay

    3

  • install

    true

  • install_file

    aa.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.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • 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 55 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of FindShellTrayWindow 59 IoCs
  • Suspicious use of SendNotifyMessage 58 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\eeeeeeeeeeeeeeeeeeeee.exe
    "C:\Users\Admin\AppData\Local\Temp\eeeeeeeeeeeeeeeeeeeee.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2884
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "aa" /tr '"C:\Users\Admin\AppData\Roaming\aa.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4364
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "aa" /tr '"C:\Users\Admin\AppData\Roaming\aa.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2180
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8FAD.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3500
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1272
      • C:\Users\Admin\AppData\Roaming\aa.exe
        "C:\Users\Admin\AppData\Roaming\aa.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2452
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1460

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8FAD.tmp.bat

    Filesize

    146B

    MD5

    5bfa5bc14a184481d1a3207f4085f32f

    SHA1

    9011ba3cd464e031f50334fa845e1657479ea4e2

    SHA256

    3c110249bab407de81177fea91b997bdef278c74d72ecd9465ddbaa55a4a9351

    SHA512

    226a374f17b1ca3bf6735dd5039d8fb64b998d299c18bf32cbf4e817d1927bfe57e3c5f1a7ec95a63cc26e490cb3632932fffbccf4a2780ab999e1672d36c55c

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

    Filesize

    47KB

    MD5

    70dea4658bea5bf00ef8c0578693d6fa

    SHA1

    814cf65c3cc2394a8a2bab4997f28c46f1976e41

    SHA256

    85a8267c923fccae9397ee2f05dead67d8877145b175f6836940a28fa96ca4ae

    SHA512

    348990ee46dc1d19b7a697b81949b22dbca9af203d9ba2cb06036f82cace988b160a3a45193abf67f014ea2c44db9c4540771c8d4f179f9991cf8754ec563e39

  • memory/1460-27-0x0000021C7C200000-0x0000021C7C201000-memory.dmp

    Filesize

    4KB

  • memory/1460-21-0x0000021C7C200000-0x0000021C7C201000-memory.dmp

    Filesize

    4KB

  • memory/1460-22-0x0000021C7C200000-0x0000021C7C201000-memory.dmp

    Filesize

    4KB

  • memory/1460-23-0x0000021C7C200000-0x0000021C7C201000-memory.dmp

    Filesize

    4KB

  • memory/1460-24-0x0000021C7C200000-0x0000021C7C201000-memory.dmp

    Filesize

    4KB

  • memory/1460-25-0x0000021C7C200000-0x0000021C7C201000-memory.dmp

    Filesize

    4KB

  • memory/1460-26-0x0000021C7C200000-0x0000021C7C201000-memory.dmp

    Filesize

    4KB

  • memory/1460-15-0x0000021C7C200000-0x0000021C7C201000-memory.dmp

    Filesize

    4KB

  • memory/1460-17-0x0000021C7C200000-0x0000021C7C201000-memory.dmp

    Filesize

    4KB

  • memory/1460-16-0x0000021C7C200000-0x0000021C7C201000-memory.dmp

    Filesize

    4KB

  • memory/2452-14-0x0000000074D90000-0x0000000075540000-memory.dmp

    Filesize

    7.7MB

  • memory/2452-13-0x0000000074D90000-0x0000000075540000-memory.dmp

    Filesize

    7.7MB

  • memory/2884-0-0x0000000074E2E000-0x0000000074E2F000-memory.dmp

    Filesize

    4KB

  • memory/2884-8-0x0000000074E20000-0x00000000755D0000-memory.dmp

    Filesize

    7.7MB

  • memory/2884-3-0x0000000005930000-0x00000000059CC000-memory.dmp

    Filesize

    624KB

  • memory/2884-2-0x0000000074E20000-0x00000000755D0000-memory.dmp

    Filesize

    7.7MB

  • memory/2884-1-0x0000000000FB0000-0x0000000000FC2000-memory.dmp

    Filesize

    72KB