Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    01-01-2025 07:12

General

  • Target

    Avix.exe

  • Size

    114KB

  • MD5

    724b790c9d782df5a52ca14ac32235db

  • SHA1

    26cb3b209100ed82968f97ff891909dfcf7af982

  • SHA256

    0e8cb86b94be8ce8dd3490f54025d2824cd36845b4e64d839303fbb4f6ec0a19

  • SHA512

    d7d17527ee7416a6830b0dd145b145ba0ab602a9b34797235e110cb7dfe17e23458884da159d3502e4e1303ca08654208e4273ad3d4b19caf7eecae91f0edb97

  • SSDEEP

    3072:sr85C/1bfUQLBYsUOcx/5bHfPMV6e9VdQsl:k9dbsC9aHfPMV6aesl

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

ninja

C2

127.0.0.1:4449

Mutex

yo

Attributes
  • delay

    1

  • install

    true

  • install_file

    yo.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Detect Neshta payload 2 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • VenomRAT 2 IoCs

    Detects VenomRAT.

  • Venomrat family
  • Async RAT payload 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 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 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Avix.exe
    "C:\Users\Admin\AppData\Local\Temp\Avix.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2772
    • C:\Users\Admin\AppData\Local\Temp\3582-490\Avix.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\Avix.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

    Filesize

    547KB

    MD5

    cf6c595d3e5e9667667af096762fd9c4

    SHA1

    9bb44da8d7f6457099cb56e4f7d1026963dce7ce

    SHA256

    593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

    SHA512

    ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\Avix.exe

    Filesize

    74KB

    MD5

    8528d4a574189b44ea85e109ad2b4be8

    SHA1

    f538d227b6feab2b505d5a0219699e7018c770d1

    SHA256

    9b6f81ae321ce860d86d8b8e498ed391a0f184f7c1fe36234f6f8c1082b9c4cb

    SHA512

    6f6c877e0567c120ff0b0fce4d696ebb2108fc6a54437da0a8c0b59a1eca4ad3998daae839370728cd93973e67893cf5cf0110c9f9182fe4d1f2ada6aaa53466

  • memory/2772-89-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3000-11-0x000007FEF5573000-0x000007FEF5574000-memory.dmp

    Filesize

    4KB

  • memory/3000-12-0x0000000000B80000-0x0000000000B98000-memory.dmp

    Filesize

    96KB

  • memory/3000-15-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

    Filesize

    9.9MB

  • memory/3000-87-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

    Filesize

    9.9MB