Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    25-04-2021 07:07

General

  • Target

    1f609ed72b74f23379e8d7636b5faa13.exe

  • Size

    25KB

  • MD5

    1f609ed72b74f23379e8d7636b5faa13

  • SHA1

    439d50691f585b1a3cd674a0852834a97d9fc9cb

  • SHA256

    29a4c9380a91012be5a2b3659f9a4c46d0eca15c689a95707f78ccde9cd11f02

  • SHA512

    15eb37df42c5747aad644844b7ed3a7da98855e443e5293a64ebf092025e9210e99dbc7889c92854bcbfbf1840004a6c0b2c086a20d6a968f22354f0cd1161b4

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

special X

C2

ghytrty.duckdns.org:4145

spapertyy.duckdns.org:4145

Mutex

L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0

Signatures

  • UAC bypass 3 TTPs
  • Windows security bypass 2 TTPs
  • XpertRAT

    XpertRAT is a remote access trojan with various capabilities.

  • XpertRAT Core Payload 2 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f609ed72b74f23379e8d7636b5faa13.exe
    "C:\Users\Admin\AppData\Local\Temp\1f609ed72b74f23379e8d7636b5faa13.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:540
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1252
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:1632
    • C:\Users\Admin\AppData\Local\Temp\1f609ed72b74f23379e8d7636b5faa13.exe
      "C:\Users\Admin\AppData\Local\Temp\1f609ed72b74f23379e8d7636b5faa13.exe"
      2⤵
      • Windows security modification
      • Checks whether UAC is enabled
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:1592
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        C:\Users\Admin\AppData\Local\Temp\1f609ed72b74f23379e8d7636b5faa13.exe
        3⤵
        • Adds policy Run key to start application
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:544

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

2
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

3
T1089

Modify Registry

6
T1112

Discovery

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/540-60-0x0000000000D20000-0x0000000000D21000-memory.dmp
    Filesize

    4KB

  • memory/540-62-0x0000000000720000-0x0000000000721000-memory.dmp
    Filesize

    4KB

  • memory/540-63-0x00000000003B0000-0x00000000003E9000-memory.dmp
    Filesize

    228KB

  • memory/544-70-0x0000000000400000-0x0000000000443000-memory.dmp
    Filesize

    268KB

  • memory/544-71-0x0000000000401364-mapping.dmp
  • memory/544-72-0x00000000006A0000-0x00000000007F3000-memory.dmp
    Filesize

    1.3MB

  • memory/544-76-0x0000000075A71000-0x0000000075A73000-memory.dmp
    Filesize

    8KB

  • memory/1252-64-0x0000000000000000-mapping.dmp
  • memory/1592-66-0x0000000000400000-0x000000000042C000-memory.dmp
    Filesize

    176KB

  • memory/1592-67-0x00000000004010B8-mapping.dmp
  • memory/1632-65-0x0000000000000000-mapping.dmp