General

  • Target

    9955e237e5f00ca94109005a2d778a88641d25fef299864223fa835e808f2236

  • Size

    1018KB

  • Sample

    250421-x2xwzssxbt

  • MD5

    eceb6e1e8aa84e6501589dc1d3deb419

  • SHA1

    467a412530d7af26b01ec278d7d325e4b6dd047a

  • SHA256

    9955e237e5f00ca94109005a2d778a88641d25fef299864223fa835e808f2236

  • SHA512

    be256564941a092d73b6931dfa0a238b17d68c69e1742b98844e43fa3010db83bf9d52922912e127cd9b6cd1bbf9ecd39c4a36c2da676ca060bf21ffef8b27bf

  • SSDEEP

    24576:pji1+TKiRzC0NqgGApfkxIpePcvkTR8cvkTAU:pu1+miRnQjALpe0vkTNvkTN

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

jvjv2044duck33.duckdns.org:8808

Mutex

0fC8zJGwBBNm

Attributes
  • delay

    3

  • install

    true

  • install_file

    csrss.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

darkcomet

Botnet

Guest16

C2

jvjv2044duck33.duckdns.org:1604

Mutex

DC_MUTEX-CK7UE3N

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    Jp74nsvbhc4i

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

rc4.plain

Targets

    • Target

      9955e237e5f00ca94109005a2d778a88641d25fef299864223fa835e808f2236

    • Size

      1018KB

    • MD5

      eceb6e1e8aa84e6501589dc1d3deb419

    • SHA1

      467a412530d7af26b01ec278d7d325e4b6dd047a

    • SHA256

      9955e237e5f00ca94109005a2d778a88641d25fef299864223fa835e808f2236

    • SHA512

      be256564941a092d73b6931dfa0a238b17d68c69e1742b98844e43fa3010db83bf9d52922912e127cd9b6cd1bbf9ecd39c4a36c2da676ca060bf21ffef8b27bf

    • SSDEEP

      24576:pji1+TKiRzC0NqgGApfkxIpePcvkTR8cvkTAU:pu1+miRnQjALpe0vkTNvkTN

    • AsyncRat

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

    • Asyncrat family

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

    • Darkcomet family

    • Modifies WinLogon for persistence

    • NanoCore

      NanoCore is a remote access tool (RAT) with a variety of capabilities.

    • Nanocore family

    • Async RAT payload

    • Disables Task Manager via registry modification

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Drops file in System32 directory

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v16

Tasks