Resubmissions

18/12/2020, 16:31

201218-rf4f27wdbs8

14/12/2020, 11:33

201214-1gy4fl2smn8

12/12/2020, 16:18

201212-45avfhl4rx10

11/12/2020, 11:08

201211-d57rtvtlna10

11/12/2020, 10:19

201211-zh128fnl2n10

Analysis

  • max time kernel
    580s
  • max time network
    578s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    12/12/2020, 16:18

General

  • Target
    Document931215825.xls
  • Size 53KB
  • Sample201212-45avfhl4rx
  • SHA256 829419a788104ec45e82487738be2779a83cac1b65bfc9343e351e75cfa49f5e
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • trickbot

Version
  • 100006

Botnet
  • rob20

C2
  • 80.242.220.146:449

  • 177.221.108.198:449

  • 41.243.29.182:449

  • 178.134.55.190:449

  • 194.5.249.71:443

  • 195.123.242.207:443

  • 184.95.51.178:443

  • 94.158.245.90:443

  • 192.3.247.125:443

  • 156.96.47.3:443

  • 192.3.73.165:443

  • 192.119.171.230:443

  • 141.136.0.42:443

  • 45.12.110.206:443

  • 5.34.180.168:443

  • 195.123.242.202:443

  • 196.45.140.146:449

  • 103.250.70.163:443

  • 103.87.25.220:443

  • 118.69.133.4:443

Attributes
  • autorun
    Name:pwgrab
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.

  • Blocklisted process makes network request 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Windows directory 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 508 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Document931215825.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1400
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\IntelCompany\JIOLAS.RRTTOOKK,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:3440
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32 C:\IntelCompany\JIOLAS.RRTTOOKK,DllRegisterServer
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:1220
        • C:\Windows\system32\wermgr.exe
          C:\Windows\system32\wermgr.exe
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2008
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe
            5⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3828

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1220-9-0x0000000004BE0000-0x0000000004C19000-memory.dmp

        memory/1220-10-0x0000000010000000-0x0000000010038000-memory.dmp

        memory/1400-2-0x00007FFB59020000-0x00007FFB59657000-memory.dmp

        memory/3828-14-0x00000237436B0000-0x00000237436B0188-memory.dmp

        memory/3828-15-0x0000023743630000-0x0000023743630018-memory.dmp