Analysis

  • max time kernel
    125s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    20-10-2021 18:17

General

  • Target

    doc.xlsm

  • Size

    210KB

  • MD5

    7eaa8c20b9840547b206f2dd21ac11b6

  • SHA1

    6eaaa24a1d5164dca972e928d62a4c1cf6523689

  • SHA256

    9cf7aef7011220c83deb3587e15b09bdfd16da64f3c23739d860ef183afb0d22

  • SHA512

    9cc2095e15a3261ef9d4101ae363c44a54412db86a1556f09b441379b7291d12c4d1ce554b67f584a275730e6d03d4958255ca4c649e206a83bd560ff29636a9

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://185.81.115.23/ytr.dll

Extracted

Family

trickbot

Version

100019

Botnet

sat4

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

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Trickbot

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

  • Downloads MZ/PE file
  • Loads dropped DLL 1 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\doc.xlsm
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1336
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 -silent C:\Datop\test.test
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:580
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe
        3⤵
          PID:432
        • C:\Windows\system32\wermgr.exe
          C:\Windows\system32\wermgr.exe
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:952

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Datop\test.test
      MD5

      1d71d05681e72c749836a41bec1ce60b

      SHA1

      510712d24aaf87255113857296407cab807b11d9

      SHA256

      f3aca25f563b59de9b6b1e3397d726cbe177c9bbca7ba51a0df9347fc0e55d1b

      SHA512

      9f4ba9afb903443dd4a0a8f03ffcd5fd7938d6ebd1d545d38143202be987302d5ddaf08ee859324d6c52dde582805e3557aed3c9ec51625a90caa6125a6c54b7

    • \Datop\test.test
      MD5

      1d71d05681e72c749836a41bec1ce60b

      SHA1

      510712d24aaf87255113857296407cab807b11d9

      SHA256

      f3aca25f563b59de9b6b1e3397d726cbe177c9bbca7ba51a0df9347fc0e55d1b

      SHA512

      9f4ba9afb903443dd4a0a8f03ffcd5fd7938d6ebd1d545d38143202be987302d5ddaf08ee859324d6c52dde582805e3557aed3c9ec51625a90caa6125a6c54b7

    • memory/580-65-0x0000000010001000-0x0000000010003000-memory.dmp
      Filesize

      8KB

    • memory/580-67-0x00000000008F1000-0x0000000000925000-memory.dmp
      Filesize

      208KB

    • memory/580-58-0x0000000075B71000-0x0000000075B73000-memory.dmp
      Filesize

      8KB

    • memory/580-72-0x0000000000A81000-0x0000000000A83000-memory.dmp
      Filesize

      8KB

    • memory/580-71-0x0000000001EA0000-0x0000000001EB1000-memory.dmp
      Filesize

      68KB

    • memory/580-61-0x0000000000130000-0x0000000000169000-memory.dmp
      Filesize

      228KB

    • memory/580-62-0x00000000008B0000-0x00000000008EB000-memory.dmp
      Filesize

      236KB

    • memory/580-66-0x0000000010003000-0x0000000010004000-memory.dmp
      Filesize

      4KB

    • memory/580-69-0x0000000000130000-0x0000000000169000-memory.dmp
      Filesize

      228KB

    • memory/580-57-0x0000000000000000-mapping.dmp
    • memory/580-68-0x0000000000925000-0x0000000000926000-memory.dmp
      Filesize

      4KB

    • memory/580-70-0x0000000000A30000-0x0000000000A75000-memory.dmp
      Filesize

      276KB

    • memory/952-73-0x0000000000000000-mapping.dmp
    • memory/952-75-0x0000000000110000-0x0000000000111000-memory.dmp
      Filesize

      4KB

    • memory/952-74-0x0000000000060000-0x0000000000089000-memory.dmp
      Filesize

      164KB

    • memory/1336-54-0x000000002F341000-0x000000002F344000-memory.dmp
      Filesize

      12KB

    • memory/1336-55-0x0000000071C31000-0x0000000071C33000-memory.dmp
      Filesize

      8KB

    • memory/1336-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB