Analysis

  • max time kernel
    16s
  • max time network
    145s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    21-04-2021 03:51

General

  • Target

    85c122363fe6ee91cdcdf8c3d307b75d.exe

  • Size

    22KB

  • MD5

    85c122363fe6ee91cdcdf8c3d307b75d

  • SHA1

    5a302331f5264923c3e5bccd79bd17403c4dc6e7

  • SHA256

    c2576e9e401ba6b3716d78e8cc64a17f513c68592fd7897ddf709c4e9454aaa8

  • SHA512

    84b18ace3a24e27e4fb67444c61e5abc11762e6a4732bd4b0547247a971d3700070e5cefd46e945ec823e2bc7680ba2fb985c9832ee5fd64b64ddcc1c41f3d03

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

C2

38.132.99.156:6606

38.132.99.156:7707

38.132.99.156:8808

thewatersmoney.hopto.org:6606

thewatersmoney.hopto.org:7707

thewatersmoney.hopto.org:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • aes_key

    iJSacvzCWPl1LYxGZUA2LWWvKIcJOBSR

  • anti_detection

    false

  • autorun

    false

  • bdos

    false

  • delay

    Default

  • host

    38.132.99.156,thewatersmoney.hopto.org

  • hwid

    3

  • install_file

  • install_folder

    %AppData%

  • mutex

    AsyncMutex_6SI8OkPnk

  • pastebin_config

    null

  • port

    6606,7707,8808

  • version

    0.5.7B

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • Async RAT payload 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 16 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\85c122363fe6ee91cdcdf8c3d307b75d.exe
    "C:\Users\Admin\AppData\Local\Temp\85c122363fe6ee91cdcdf8c3d307b75d.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1000
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:204
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:2060
    • C:\Users\Admin\AppData\Local\Temp\85c122363fe6ee91cdcdf8c3d307b75d.exe
      "C:\Users\Admin\AppData\Local\Temp\85c122363fe6ee91cdcdf8c3d307b75d.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2180
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1000 -s 2520
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1472

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/204-120-0x0000000000000000-mapping.dmp
  • memory/1000-114-0x00000000004A0000-0x00000000004A1000-memory.dmp
    Filesize

    4KB

  • memory/1000-116-0x0000000004CB0000-0x0000000004CB1000-memory.dmp
    Filesize

    4KB

  • memory/1000-117-0x0000000000E50000-0x0000000000E51000-memory.dmp
    Filesize

    4KB

  • memory/1000-118-0x0000000006170000-0x0000000006171000-memory.dmp
    Filesize

    4KB

  • memory/1000-119-0x0000000004730000-0x0000000004759000-memory.dmp
    Filesize

    164KB

  • memory/2060-121-0x0000000000000000-mapping.dmp
  • memory/2180-122-0x0000000000400000-0x0000000000412000-memory.dmp
    Filesize

    72KB

  • memory/2180-123-0x000000000040C76E-mapping.dmp
  • memory/2180-126-0x0000000004FD0000-0x0000000004FD1000-memory.dmp
    Filesize

    4KB

  • memory/2180-129-0x0000000005410000-0x0000000005411000-memory.dmp
    Filesize

    4KB