Analysis

  • max time kernel
    121s
  • max time network
    121s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    21-10-2021 15:19

General

  • Target

    subzero.png.dll

  • Size

    706KB

  • MD5

    a3e7540eaef734b4f74c23bfda1023a0

  • SHA1

    377859b3d44cd40f21fb20b682169b447c0e8fb2

  • SHA256

    65234c8a08c9a5e2e81af11e4be56eaee3ec00c9063069ab9d97770d6f31ba6b

  • SHA512

    84e0aea7b15608d59401c3124c82bc599a629e6d4f95b75c58d8bb204071acc2c40160ca5a3a50553c2c472401fb51513530e7f28fbb5531321216577c1657b3

Malware Config

Extracted

Family

trickbot

Version

100019

Botnet

rob136

C2

65.152.201.203:443

185.56.175.122:443

46.99.175.217:443

179.189.229.254:443

46.99.175.149:443

181.129.167.82:443

216.166.148.187:443

46.99.188.223:443

128.201.76.252:443

62.99.79.77:443

60.51.47.65:443

24.162.214.166:443

45.36.99.184:443

97.83.40.67:443

184.74.99.214:443

103.105.254.17:443

62.99.76.213:443

82.159.149.52:443

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 2 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 10 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\subzero.png.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2716
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\subzero.png.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2968
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe
        3⤵
          PID:3248
        • C:\Windows\system32\wermgr.exe
          C:\Windows\system32\wermgr.exe
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3436

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2968-115-0x0000000000000000-mapping.dmp
    • memory/2968-116-0x0000000004A60000-0x0000000004CC8000-memory.dmp
      Filesize

      2.4MB

    • memory/2968-117-0x00000000010A0000-0x00000000010E5000-memory.dmp
      Filesize

      276KB

    • memory/2968-118-0x0000000000F90000-0x0000000000F91000-memory.dmp
      Filesize

      4KB

    • memory/2968-119-0x0000000010001000-0x0000000010003000-memory.dmp
      Filesize

      8KB

    • memory/3436-120-0x0000000000000000-mapping.dmp
    • memory/3436-122-0x000002837B010000-0x000002837B011000-memory.dmp
      Filesize

      4KB

    • memory/3436-121-0x000002837AFD0000-0x000002837AFF9000-memory.dmp
      Filesize

      164KB

    • memory/3436-124-0x000002837B210000-0x000002837B212000-memory.dmp
      Filesize

      8KB

    • memory/3436-123-0x000002837B210000-0x000002837B212000-memory.dmp
      Filesize

      8KB