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Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    02/12/2024, 22:10

General

  • Target

    file.exe

  • Size

    149KB

  • MD5

    92a881475c40674255bea18c1e5fbcef

  • SHA1

    bf62aaab46c70a56152d63ff48596938cb24356e

  • SHA256

    4a75b767a2a204c678bd2790e45c7aca74f80c84530705127340fb7b82e87ca2

  • SHA512

    85270af1aa7fb0ad77aef0b21cf5ab858acac41a3f61595437b45886e003ac82b3c73cccba40363ef145b8b0cc27dcaef6afa283c5f579085cdba86107c4302c

  • SSDEEP

    3072:lrEHFS+7rEkM5InknaPa9+FQ2WP3zSQ5Sj6HQOSbLkHVh4dI3T:eHR5nPYM8+QXdS3k16i3T

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

man-soft.gl.at.ply.gg:15630

Mutex

DcRatMutex_qwqdanchun

Attributes
  • delay

    1

  • install

    true

  • install_file

    cmd.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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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.

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Users\Admin\AppData\Local\Temp\myFile.exe
      "C:\Users\Admin\AppData\Local\Temp\myFile.exe"
      2⤵
      • Executes dropped EXE
      PID:1908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\myFile.exe

    Filesize

    79KB

    MD5

    5b542346d8d9b31c58b7c025030686f2

    SHA1

    182bc5a2c94adf62df342d9a30086a8a736dcc97

    SHA256

    0dc58f6ac03b96264e3b0e79bff97990c36189c4e135311d7e20b43c686889ff

    SHA512

    5391d672a1244c5558d90d0e5975b4d3606ba575cd5889163f52335516f5cf0b009ae1e323a2bbc96e87f324409320ee10522d78961d00bac34ce991932bfb71

  • memory/1908-9-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

    Filesize

    4KB

  • memory/1908-10-0x00000000009B0000-0x00000000009CA000-memory.dmp

    Filesize

    104KB

  • memory/1908-11-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

    Filesize

    9.9MB

  • memory/1908-12-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

    Filesize

    9.9MB

  • memory/1964-0-0x0000000073F6E000-0x0000000073F6F000-memory.dmp

    Filesize

    4KB

  • memory/1964-1-0x0000000000E50000-0x0000000000E58000-memory.dmp

    Filesize

    32KB

  • memory/1964-7-0x0000000073F60000-0x000000007464E000-memory.dmp

    Filesize

    6.9MB

  • memory/1964-13-0x0000000073F60000-0x000000007464E000-memory.dmp

    Filesize

    6.9MB