Analysis

  • max time kernel
    138s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-en
  • submitted
    13-09-2021 16:26

General

  • Target

    triage_dropped_file.dll

  • Size

    542KB

  • MD5

    a72b41be79e3fba13890f3487e6e794b

  • SHA1

    180ec439b27f512428550d3a199edcd013754602

  • SHA256

    b4095d1c356a145cca001102abd0ad719a1798594756d20e198f92a39ba21af7

  • SHA512

    4c21d93e14aea94afca3378b6adbddad2c0ddc579d1bf81e437da2b42d1228992ffe61532a3055af9e794144c3ff0f8f31aff9c9e297a0dba41d649af614a3d6

Malware Config

Extracted

Family

trickbot

Version

2000033

Botnet

zem1

C2

179.42.137.102:443

191.36.152.198:443

179.42.137.104:443

179.42.137.106:443

179.42.137.108:443

202.183.12.124:443

194.190.18.122:443

103.56.207.230:443

171.103.187.218:449

171.103.189.118:449

18.139.111.104:443

179.42.137.105:443

186.4.193.75:443

171.101.229.2:449

179.42.137.107:443

103.56.43.209:449

179.42.137.110:443

45.181.207.156:443

197.44.54.162:449

179.42.137.109:443

Attributes
  • autorun
    Name:pwgrabb
    Name:pwgrabc
ecc_pubkey.base64

Signatures

  • Trickbot

    Developed in 2016, TrickBot is one of the more recent banking Trojans.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1960
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.dll
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1732
      • C:\Windows\system32\wermgr.exe
        C:\Windows\system32\wermgr.exe
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:400

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/400-63-0x0000000000000000-mapping.dmp
  • memory/400-64-0x0000000000060000-0x0000000000089000-memory.dmp
    Filesize

    164KB

  • memory/400-65-0x0000000000290000-0x0000000000291000-memory.dmp
    Filesize

    4KB

  • memory/1732-54-0x0000000000000000-mapping.dmp
  • memory/1732-55-0x0000000075C11000-0x0000000075C13000-memory.dmp
    Filesize

    8KB

  • memory/1732-58-0x0000000000190000-0x00000000001C8000-memory.dmp
    Filesize

    224KB

  • memory/1732-56-0x0000000010000000-0x0000000010004000-memory.dmp
    Filesize

    16KB

  • memory/1732-61-0x0000000000220000-0x00000000002A0000-memory.dmp
    Filesize

    512KB

  • memory/1732-62-0x0000000000220000-0x00000000002A0000-memory.dmp
    Filesize

    512KB

  • memory/1960-53-0x000007FEFC161000-0x000007FEFC163000-memory.dmp
    Filesize

    8KB