Resubmissions

19-08-2021 15:32

210819-322wrsvsgn 10

26-07-2021 20:08

210726-mnz88dbwn6 10

Analysis

  • max time kernel
    65s
  • max time network
    134s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    26-07-2021 20:08

General

  • Target

    porto.pdf.dll

  • Size

    617KB

  • MD5

    8dd7c961c9cdbd69e9a5d86d7809fc50

  • SHA1

    f9765d2e54784151519b6d755118edd01e55c51d

  • SHA256

    6e057855e21f4c93a4e3825b9711ca07ccec94fed55dbc20e1d3316b2b3dc549

  • SHA512

    9cf38f34bf574839f7404918f4fc8503bfd0a52d22e505972ebabc098e4854b661e42bb0f391bb293735494739f74d565b9256a35079c8dfb11fba3dfdcd6cfa

Malware Config

Extracted

Family

trickbot

Version

100018

Botnet

rob112

C2

38.110.103.124:443

185.56.76.28:443

204.138.26.60:443

60.51.47.65:443

74.85.157.139:443

68.69.26.182:443

38.110.103.136:443

38.110.103.18:443

138.34.28.219:443

185.56.76.94:443

217.115.240.248:443

24.162.214.166:443

80.15.2.105:443

154.58.23.192:443

38.110.100.104:443

45.36.99.184:443

185.56.76.108:443

185.56.76.72:443

138.34.28.35:443

97.83.40.67:443

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\porto.pdf.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3716
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\porto.pdf.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1628
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe
        3⤵
          PID:2572
        • C:\Windows\system32\wermgr.exe
          C:\Windows\system32\wermgr.exe
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2608

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1628-114-0x0000000000000000-mapping.dmp
    • memory/1628-115-0x0000000004DC0000-0x0000000004DFB000-memory.dmp
      Filesize

      236KB

    • memory/1628-118-0x0000000004E20000-0x0000000004E59000-memory.dmp
      Filesize

      228KB

    • memory/1628-120-0x0000000004E60000-0x0000000004E97000-memory.dmp
      Filesize

      220KB

    • memory/1628-122-0x0000000004AF0000-0x0000000004CFE000-memory.dmp
      Filesize

      2.1MB

    • memory/1628-123-0x0000000004EA0000-0x0000000004EE4000-memory.dmp
      Filesize

      272KB

    • memory/1628-124-0x0000000004F10000-0x0000000004F11000-memory.dmp
      Filesize

      4KB

    • memory/1628-125-0x0000000004EF1000-0x0000000004EF3000-memory.dmp
      Filesize

      8KB

    • memory/2608-126-0x0000000000000000-mapping.dmp
    • memory/2608-127-0x0000014971770000-0x0000014971798000-memory.dmp
      Filesize

      160KB

    • memory/2608-128-0x0000014971880000-0x0000014971881000-memory.dmp
      Filesize

      4KB