Overview

overview

10

Static

static

IAENMAIL-A...df.exe

windows7_x64

10

IAENMAIL-A...df.exe

windows10_x64

10

Analysis

  • max time kernel
    113s
  • max time network
    177s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    22-10-2021 07:54

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General

  • Target

    IAENMAIL-A4-211004-0830-0002036.pdf.exe

  • Size

    491KB

  • MD5

    f44d9910d716f5d7fdf542e25ca41b20

  • SHA1

    f7dc32448961dd681c73594952ef881bbf36c7e0

  • SHA256

    dfe1f7602fc303b7a0f7427deca31f31aa44493ef8d129a631ce0ad770b9690b

  • SHA512

    4ede162be9f5a925513a2e9bf458cfe6db4ecb64906dc12008f2ab9fc93e92485e80fb4ed779e87ca4509abd5fdd4493e960fe25e7e0170eaea0e41c35a5af0b

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

202.55.133.118:5200

Mutex

DcRatMutex_qwqdanchun

Attributes
  • anti_vm

    false

  • bsod

    false

  • delay

    1

  • install

    false

  • install_folder

    %AppData%

  • pastebin_config

    null

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

    ratasyncrat
  • Async RAT payload 5 IoCs
    rat
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\IAENMAIL-A4-211004-0830-0002036.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\IAENMAIL-A4-211004-0830-0002036.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:592
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yywxphKidVZnL" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE476.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1660
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1672

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

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • memory/592-54-0x0000000000D30000-0x0000000000D31000-memory.dmp
    Filesize

    4KB

    Download
  • memory/592-56-0x0000000075951000-0x0000000075953000-memory.dmp
    Filesize

    8KB

    Download
  • memory/592-57-0x0000000000AD0000-0x0000000000AD1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/592-58-0x00000000008D0000-0x00000000008DE000-memory.dmp
    Filesize

    56KB

    Download
  • memory/592-59-0x0000000004370000-0x000000000439E000-memory.dmp
    Filesize

    184KB

    Download
  • memory/1660-60-0x0000000000000000-mapping.dmp
    Download
  • memory/1672-61-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

    Download
  • memory/1672-62-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

    Download
  • memory/1672-63-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

    Download
  • memory/1672-64-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

    Download
  • memory/1672-65-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

    Download
  • memory/1672-66-0x000000000040CB8E-mapping.dmp
    Download
  • memory/1672-67-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

    Download
  • memory/1672-70-0x00000000040F0000-0x00000000040F1000-memory.dmp
    Filesize

    4KB

    Download