Overview

overview

10

Static

static

disposable...sk.exe

windows7_x64

10

disposable...sk.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    168s
  • max time network
    187s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:24

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General

  • Target

    disposable protective mask.exe

  • Size

    538KB

  • MD5

    349decc4593ee1efe629681f446c6d86

  • SHA1

    c751c97becccf1c4e9f9af7009d97f7e71c13de9

  • SHA256

    6c961875370f68c10a135e3d0c14ec8164bb92556a8e3482cd80b52f96e4bc52

  • SHA512

    3c4df88c27c04cbd69070ea122672db265c8307a2a502b35a2887199e2013fa2fa7156b2a323dbceb771732f5415727fe7260f5100db85b2a32dd433cdd8505a

Score
10/10
asyncrathardhardrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.6D

Botnet

HARDHARD

C2

185.165.153.215:6606

Mutex

uqeolevmck

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • 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). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\disposable protective mask.exe
    "C:\Users\Admin\AppData\Local\Temp\disposable protective mask.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3588
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aBEHIFQnafbJqs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF6D8.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:544
    • C:\Users\Admin\AppData\Local\Temp\disposable protective mask.exe
      "{path}"
      2⤵
        PID:484

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Credential Access

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\disposable protective mask.exe.log
      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\tmpF6D8.tmp
      Filesize

      1KB

      MD5

      cdcb02e7ca5ca26668254b7041894342

      SHA1

      864429c5e474e2541550cd872434437043d08a38

      SHA256

      e67df0fd56c160938a3cf8f34adbbf2b922230e23bee13fe615ceff64bced581

      SHA512

      b77e52cabf53640badc8c57af8e8ac730dcc6accd623298c27ae02e83472c259033ac5902b6d3abec25b7243f84bfbb004013d96e792172ed471f269c25785d8

      Download Submit
    • memory/484-137-0x0000000000000000-mapping.dmp
      Download
    • memory/484-138-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

      Download
    • memory/544-135-0x0000000000000000-mapping.dmp
      Download
    • memory/3588-130-0x0000000000AE0000-0x0000000000B6C000-memory.dmp
      Filesize

      560KB

      Download
    • memory/3588-131-0x0000000009ED0000-0x000000000A474000-memory.dmp
      Filesize

      5.6MB

      Download
    • memory/3588-132-0x0000000005770000-0x0000000005802000-memory.dmp
      Filesize

      584KB

      Download
    • memory/3588-133-0x0000000005720000-0x000000000572A000-memory.dmp
      Filesize

      40KB

      Download
    • memory/3588-134-0x0000000009D20000-0x0000000009DBC000-memory.dmp
      Filesize

      624KB

      Download