Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2024, 05:50

General

  • Target

    73e51598d70df9f164408abaaf346211.exe

  • Size

    291KB

  • MD5

    73e51598d70df9f164408abaaf346211

  • SHA1

    31998d8ae54173f71c132120cf62fbda266a33fc

  • SHA256

    238230eb6322dfb786b5e3054b44d1e0322aadfc44232111ec3db71e20503ee8

  • SHA512

    4ef11892e99551ef08d596947edd3a4c6c936a22edbb9c25f9e59279b7bf8ea4cf5c4e51a0e98b7c2753a1180f762138290f77239e353bf57959e6cd074132e5

  • SSDEEP

    3072:aFPdic8sB/RkDWMGdtFkZKm320SEuBJVJlACYpMHAsjyRhuKp4NS/wNBf+Dh8HiZ:QlxsmiKpBzJiPpMHAsehcNmm+DS4h

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

0.5.6D

Botnet

Default

C2

79.134.225.44:7450

Mutex

zesdluuiwc

Attributes
  • delay

    5

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Async RAT payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\73e51598d70df9f164408abaaf346211.exe
    "C:\Users\Admin\AppData\Local\Temp\73e51598d70df9f164408abaaf346211.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:804
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EzliZea" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC36F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1172
    • C:\Users\Admin\AppData\Local\Temp\73e51598d70df9f164408abaaf346211.exe
      "{path}"
      2⤵
        PID:1624

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\73e51598d70df9f164408abaaf346211.exe.log

            Filesize

            1KB

            MD5

            8ec831f3e3a3f77e4a7b9cd32b48384c

            SHA1

            d83f09fd87c5bd86e045873c231c14836e76a05c

            SHA256

            7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

            SHA512

            26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

          • C:\Users\Admin\AppData\Local\Temp\tmpC36F.tmp

            Filesize

            1KB

            MD5

            698cd417636bf9d028fde264f43e0e63

            SHA1

            b7462f95fd2d5ea786ff73ed0323c60a33c67ca8

            SHA256

            eaced3f7fa33a6f5cfd35f11cf2dc9c4c936798c62e1ebbd343da535c6437528

            SHA512

            eb0239725d7da045ebf66dbdcbce0e1ffbb95644ef63c43597c0a875dbb6f997e2959cc442617ea711b7224a45ad9744c55d70605f6beb689159ec2465679a05

          • memory/804-10-0x00000000079E0000-0x0000000007A46000-memory.dmp

            Filesize

            408KB

          • memory/804-11-0x0000000006360000-0x0000000006374000-memory.dmp

            Filesize

            80KB

          • memory/804-4-0x0000000004E90000-0x0000000004EA0000-memory.dmp

            Filesize

            64KB

          • memory/804-5-0x0000000004F70000-0x0000000004F7A000-memory.dmp

            Filesize

            40KB

          • memory/804-6-0x00000000079C0000-0x00000000079C8000-memory.dmp

            Filesize

            32KB

          • memory/804-7-0x0000000007A70000-0x0000000007B0C000-memory.dmp

            Filesize

            624KB

          • memory/804-8-0x00000000744A0000-0x0000000074C50000-memory.dmp

            Filesize

            7.7MB

          • memory/804-9-0x0000000004E90000-0x0000000004EA0000-memory.dmp

            Filesize

            64KB

          • memory/804-1-0x00000000744A0000-0x0000000074C50000-memory.dmp

            Filesize

            7.7MB

          • memory/804-3-0x0000000004EC0000-0x0000000004F52000-memory.dmp

            Filesize

            584KB

          • memory/804-2-0x00000000053D0000-0x0000000005974000-memory.dmp

            Filesize

            5.6MB

          • memory/804-18-0x00000000744A0000-0x0000000074C50000-memory.dmp

            Filesize

            7.7MB

          • memory/804-0-0x0000000000470000-0x00000000004C0000-memory.dmp

            Filesize

            320KB

          • memory/1624-19-0x00000000744A0000-0x0000000074C50000-memory.dmp

            Filesize

            7.7MB

          • memory/1624-15-0x0000000000400000-0x0000000000412000-memory.dmp

            Filesize

            72KB

          • memory/1624-20-0x00000000057C0000-0x00000000057D0000-memory.dmp

            Filesize

            64KB

          • memory/1624-21-0x00000000744A0000-0x0000000074C50000-memory.dmp

            Filesize

            7.7MB

          • memory/1624-22-0x00000000057C0000-0x00000000057D0000-memory.dmp

            Filesize

            64KB