Overview

overview

10

Static

static

PO-MKF-19808..pdf.scr

windows7_x64

10

PO-MKF-19808..pdf.scr

windows10_x64

10

Analysis

  • max time kernel
    143s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 19:35

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General

  • Target

    PO-MKF-19808..pdf.scr

  • Size

    181KB

  • MD5

    8eda382c9b3ad817590b453d2e87c930

  • SHA1

    be453e291adb32e184e2303b8c6dade72cf955d7

  • SHA256

    3c9353b085fb97b6128f83a53c45ddd8efcaf9a62cbe824337bc97e7f01b69d2

  • SHA512

    90b36c1aac210ea97c9f9aee20903c833a0e89b2bf3fafc373e9640cc382267b1b4f3bf3b82962b8e2dcd963cef2eb58d3cbcfea60a4997dc87e2c0870ceaf83

Score
10/10
asyncratratrezer0

Malware Config

Extracted

Family

asyncrat

Version

0.5.7A

C2

null:null

Mutex

chizzy25@!7^

Attributes
  • aes_key

    55iYcxq7ddicCQWRfaDGH9kCLoouenVW

  • anti_detection

    false

  • autorun

    false

  • bdos

    false

  • delay

    MAY

  • host

    null

  • hwid

    1

  • install_file

  • install_folder

    %AppData%

  • mutex

    chizzy25@!7^

  • pastebin_config

    https://pastebin.com/raw/HKYwiN9V

  • port

    null

  • version

    0.5.7A

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

    ratasyncrat
  • Async RAT payload 4 IoCs
    rat
  • rezer0 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

    rezer0
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO-MKF-19808..pdf.scr
    "C:\Users\Admin\AppData\Local\Temp\PO-MKF-19808..pdf.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:596
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qYhwWdxqX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp75EB.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2028
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "{path}"
      2⤵
        PID:1788
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "{path}"
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1596

    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

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Web Service

    1
    T1102

    Impact

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp75EB.tmp
      MD5

      a35a152949e7224fdb9486818838e36c

      SHA1

      d147f52574e1c5c97b422b1017c0b974837bdd30

      SHA256

      e31283941668240da62bbec658c062779b869c0acec27eeed85fa7c47269017c

      SHA512

      626111ca262bcd7ad194908ab0686d8b1337f08cdd9050e266f9e12c4dc4266a316c059cea4cb966d4855ddf972c758473e4bec745c69c1ea59ea4b944c09c17

      Download Submit
    • memory/596-0-0x0000000074CC0000-0x00000000753AE000-memory.dmp
      Filesize

      6.9MB

      Download
    • memory/596-1-0x0000000000CF0000-0x0000000000CF1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/596-3-0x00000000003D0000-0x00000000003D3000-memory.dmp
      Filesize

      12KB

      Download
    • memory/596-4-0x00000000004C0000-0x00000000004D3000-memory.dmp
      Filesize

      76KB

      Download
    • memory/1596-7-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

      Download
    • memory/1596-8-0x000000000040C65E-mapping.dmp
      Download
    • memory/1596-9-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

      Download
    • memory/1596-10-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

      Download
    • memory/1596-11-0x0000000074CC0000-0x00000000753AE000-memory.dmp
      Filesize

      6.9MB

      Download
    • memory/2028-5-0x0000000000000000-mapping.dmp
      Download