Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    21-04-2021 13:49

General

  • Target

    d76c5a676e641b431ac0a9dded9c505d.exe

  • Size

    823KB

  • MD5

    d76c5a676e641b431ac0a9dded9c505d

  • SHA1

    62bc6251747312cc7307c2c49cf14d511d0bfcdd

  • SHA256

    d5325b0dfdd73327d48c0e069567ce843a68f10d7fe0301a74dad13d6422eee2

  • SHA512

    0c4c8206529fe1469476e2e51c01a6bf3d6a5444c223ed074925c324fe235214272d010ab42ce9478f2e31a7f7aff6d7eb885f569d7cc7ac67c27aa6c49b73c9

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\d76c5a676e641b431ac0a9dded9c505d.exe
    "C:\Users\Admin\AppData\Local\Temp\d76c5a676e641b431ac0a9dded9c505d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2016
    • C:\Users\Admin\AppData\Local\Temp\d76c5a676e641b431ac0a9dded9c505d.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:1348
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        C:\Users\Admin\AppData\Local\Temp\d76c5a676e641b431ac0a9dded9c505d.exe
        3⤵
        • Adds policy Run key to start application
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1524

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/1348-124-0x0000000000400000-0x000000000042C000-memory.dmp
    Filesize

    176KB

  • memory/1348-136-0x0000000000400000-0x000000000042C000-memory.dmp
    Filesize

    176KB

  • memory/1348-125-0x00000000004010B8-mapping.dmp
  • memory/1524-133-0x0000000002EF1000-0x0000000002FED000-memory.dmp
    Filesize

    1008KB

  • memory/1524-132-0x0000000002EF0000-0x0000000003043000-memory.dmp
    Filesize

    1.3MB

  • memory/1524-129-0x0000000000401364-mapping.dmp
  • memory/1524-128-0x0000000000400000-0x0000000000443000-memory.dmp
    Filesize

    268KB

  • memory/2016-119-0x0000000004CB0000-0x0000000004CBE000-memory.dmp
    Filesize

    56KB

  • memory/2016-123-0x000000000AA50000-0x000000000AAC7000-memory.dmp
    Filesize

    476KB

  • memory/2016-122-0x00000000082B0000-0x0000000008374000-memory.dmp
    Filesize

    784KB

  • memory/2016-121-0x0000000004B60000-0x000000000505E000-memory.dmp
    Filesize

    5.0MB

  • memory/2016-120-0x0000000006600000-0x0000000006601000-memory.dmp
    Filesize

    4KB

  • memory/2016-114-0x0000000000130000-0x0000000000131000-memory.dmp
    Filesize

    4KB

  • memory/2016-118-0x0000000004A40000-0x0000000004A41000-memory.dmp
    Filesize

    4KB

  • memory/2016-117-0x0000000004A90000-0x0000000004A91000-memory.dmp
    Filesize

    4KB

  • memory/2016-116-0x0000000005060000-0x0000000005061000-memory.dmp
    Filesize

    4KB