Analysis

  • max time kernel
    145s
  • max time network
    148s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    21-04-2021 13:35

General

  • Target

    40e678e7d38a1541c06d16895d75f856.exe

  • Size

    774KB

  • MD5

    40e678e7d38a1541c06d16895d75f856

  • SHA1

    5faee553c8dc1cc0492d7b8b78329ac56100c040

  • SHA256

    7aa6ba1ed3e72514eac19d8b9ee4f95a17e33b63159bc75bd57ad8b38ce6361e

  • SHA512

    4abce8638860dc80ec23516aba60cd1c87a66c8a98fb62730e042a8f78841afe45fd2c021f15395a06eb0b4b4e6a95809ce0d8d6806f95c2cc516caa7362be22

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

XXX

C2

kapasky-antivirus.firewall-gateway.net:2054

kapasky-antivirus.firewall-gateway.net:4000

Mutex

U4G3L113-M7Y0-X0M5-M3D5-U8C7U551Q8Q7

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 SetThreadContext 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40e678e7d38a1541c06d16895d75f856.exe
    "C:\Users\Admin\AppData\Local\Temp\40e678e7d38a1541c06d16895d75f856.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3896
    • C:\Users\Admin\AppData\Local\Temp\40e678e7d38a1541c06d16895d75f856.exe
      "{path}"
      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:3276
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        C:\Users\Admin\AppData\Local\Temp\40e678e7d38a1541c06d16895d75f856.exe
        3⤵
        • Adds policy Run key to start application
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3456

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

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3276-124-0x0000000000400000-0x000000000042C000-memory.dmp
    Filesize

    176KB

  • memory/3276-130-0x0000000000400000-0x000000000042C000-memory.dmp
    Filesize

    176KB

  • memory/3276-125-0x00000000004010B8-mapping.dmp
  • memory/3456-134-0x0000000003771000-0x000000000386D000-memory.dmp
    Filesize

    1008KB

  • memory/3456-133-0x0000000003770000-0x00000000038C3000-memory.dmp
    Filesize

    1.3MB

  • memory/3456-129-0x0000000000401364-mapping.dmp
  • memory/3456-128-0x0000000000400000-0x0000000000443000-memory.dmp
    Filesize

    268KB

  • memory/3896-119-0x00000000050B0000-0x0000000005142000-memory.dmp
    Filesize

    584KB

  • memory/3896-123-0x0000000009DB0000-0x0000000009E27000-memory.dmp
    Filesize

    476KB

  • memory/3896-122-0x0000000007690000-0x0000000007755000-memory.dmp
    Filesize

    788KB

  • memory/3896-121-0x0000000005690000-0x000000000569E000-memory.dmp
    Filesize

    56KB

  • memory/3896-120-0x0000000007510000-0x0000000007511000-memory.dmp
    Filesize

    4KB

  • memory/3896-114-0x0000000000860000-0x0000000000861000-memory.dmp
    Filesize

    4KB

  • memory/3896-118-0x0000000005180000-0x0000000005181000-memory.dmp
    Filesize

    4KB

  • memory/3896-117-0x00000000051E0000-0x00000000051E1000-memory.dmp
    Filesize

    4KB

  • memory/3896-116-0x00000000056E0000-0x00000000056E1000-memory.dmp
    Filesize

    4KB