Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-10-2022 07:39

General

  • Target

    a514f5618e75e6976b61a2e2ca4f9291.exe

  • Size

    1.2MB

  • MD5

    a514f5618e75e6976b61a2e2ca4f9291

  • SHA1

    1f6e5ea09e3617c2113bbf0c854fa9c6ef7dbf8e

  • SHA256

    f60bcc6d90d9415a7c3c8beebdeeed867df6681880b10e925cdbc767840793ea

  • SHA512

    20ed5d38666461559a5c95321240568b77c7ef3ea5e9f66d61288d0ea6a9a863d35dd44fff4f758a050240d68febf8b38b9de3cee5ccd09509155cad3b85af00

  • SSDEEP

    24576:JAOcZe4ecyPEy42o1wW6vjOnFveUkjPV99npuezy71oporah3:jW1y4hY6teUkj9fZe6Gs

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

product62.duckdns.org:1905

goodygoody.duckdns.org:1905

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_file

    Windows updater.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • Async RAT payload 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a514f5618e75e6976b61a2e2ca4f9291.exe
    "C:\Users\Admin\AppData\Local\Temp\a514f5618e75e6976b61a2e2ca4f9291.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2076
    • C:\Users\Admin\7_43\aoqpxwe.pif
      "C:\Users\Admin\7_43\aoqpxwe.pif" haxtim.apd
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4992
      • C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
        "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4500

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\7_43\aoqpxwe.pif
    Filesize

    1.7MB

    MD5

    dd3466f64841cf21fc31f63f03dbfd29

    SHA1

    3878c8e52203d792c6f672595f7c78ab27ce3f04

    SHA256

    4fe3004208ed574521992dd1ba3d900b75a0f02f1d63ba1e531d309e85ffa06b

    SHA512

    adf3fe8378f7da5ba278db9a1df4cc7b5cff12398ec39ee7037382ebf57897de8bec72be64b5e7332bdb7ed865788dcb6ef4ceda6654e1153d39fe84b011b057

  • C:\Users\Admin\7_43\aoqpxwe.pif
    Filesize

    1.7MB

    MD5

    dd3466f64841cf21fc31f63f03dbfd29

    SHA1

    3878c8e52203d792c6f672595f7c78ab27ce3f04

    SHA256

    4fe3004208ed574521992dd1ba3d900b75a0f02f1d63ba1e531d309e85ffa06b

    SHA512

    adf3fe8378f7da5ba278db9a1df4cc7b5cff12398ec39ee7037382ebf57897de8bec72be64b5e7332bdb7ed865788dcb6ef4ceda6654e1153d39fe84b011b057

  • C:\Users\Admin\7_43\fpqmvvxh.ppv
    Filesize

    90KB

    MD5

    8f7afd4090dab508eda419e02b4f73e5

    SHA1

    e29a41526aa914a37e97ddeff800e670a41a7faf

    SHA256

    30b0b52b68dca6bc429edc6eed7f4f61e5481e996e88738bd4b22dc8dd8d5bfa

    SHA512

    00f23b4e52f94125db5146a39b022094e444317f361b1d8112f50d9d2e4d62e3d7082392a875c2a3aca66f4f60b4fdcf9bfbe449c27d2cf1ca182e4574d96c58

  • C:\Users\Admin\7_43\hajlttccg.icm
    Filesize

    55KB

    MD5

    4e4d1b73c27cf35e8e76f97086c546dd

    SHA1

    05f9912462a30720c1e4549e2177eecfd9ffa046

    SHA256

    62108ab333bcc3fa356f33398aef4d520f2365ed3639d0f486ae90c2dcfbd078

    SHA512

    b04143c73dbf722d477cb63bd3b6b1db24ba9e8c97b732f2634942e4b2aa67352a3af92725353dc625b7dabcd7a64b37532d7ee31b1bbdf26e3e7496eaea00a0

  • C:\Users\Admin\7_43\haxtim.apd
    Filesize

    216.6MB

    MD5

    0f8dbda31b556ccd2ed91705fa600d3f

    SHA1

    9ad66ddd6a14a06829a9f9830229ae294fb1efcc

    SHA256

    69321265d9e2e8ceafdf4bb4632302558385bab13afe631f430348fe4f035b50

    SHA512

    90c313ded54500c10eed968d0e2491e6e4b02b7adba508e63c3fc97ee4d55cf22d5cae03f2ead04f1cb9329623e81e71b15b4d51fbe23fbad7895dfa5d94ffec

  • C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
    Filesize

    44KB

    MD5

    9d352bc46709f0cb5ec974633a0c3c94

    SHA1

    1969771b2f022f9a86d77ac4d4d239becdf08d07

    SHA256

    2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

    SHA512

    13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

  • C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
    Filesize

    44KB

    MD5

    9d352bc46709f0cb5ec974633a0c3c94

    SHA1

    1969771b2f022f9a86d77ac4d4d239becdf08d07

    SHA256

    2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

    SHA512

    13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

  • memory/4500-139-0x000000000130C78E-mapping.dmp
  • memory/4500-138-0x0000000001300000-0x0000000001A2C000-memory.dmp
    Filesize

    7.2MB

  • memory/4500-142-0x0000000001300000-0x0000000001312000-memory.dmp
    Filesize

    72KB

  • memory/4500-143-0x0000000006A90000-0x0000000006B2C000-memory.dmp
    Filesize

    624KB

  • memory/4500-144-0x00000000070E0000-0x0000000007684000-memory.dmp
    Filesize

    5.6MB

  • memory/4500-145-0x0000000006BA0000-0x0000000006C06000-memory.dmp
    Filesize

    408KB

  • memory/4992-132-0x0000000000000000-mapping.dmp