Resubmissions

18-12-2020 16:31

201218-rf4f27wdbs 8

14-12-2020 11:33

201214-1gy4fl2smn 8

12-12-2020 16:18

201212-45avfhl4rx 10

11-12-2020 11:08

201211-d57rtvtlna 10

11-12-2020 10:19

201211-zh128fnl2n 10

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

  • MD5

    ef687c6dd0731d96d622ac024974a35b

  • SHA1

    907be2046fd958898fa14be35f567cbb30e5e8bb

  • SHA256

    829419a788104ec45e82487738be2779a83cac1b65bfc9343e351e75cfa49f5e

  • SHA512

    64c3ff8bcab43efaa971816463a620f02f760c84c60daa96d1937046b746156ab8f8461d6c68051e198e156b24133831fc663779c4f389f92ef146b6eb6a3fc5

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

Loading Replay Monitor...

Downloads

  • C:\IntelCompany\JIOLAS.RRTTOOKK

    MD5

    bd1f17c3f5f6d4b8b97bcb4d330daec4

    SHA1

    a567f1016f657c93784762925cfcfa7c8ea7b840

    SHA256

    c91623796d2ebc3fc11faf8f9578b56fd4f61a06dec26f5648b9372ae30240da

    SHA512

    0e03ad245df2837ab36ce1387a64aae35b703af2f21e61b1a10fae3f02ffa1eb53f68914ebba27673d3ec69d44d3dc7004d77d97fee1007b5ffdfb9e373db21a

  • \IntelCompany\JIOLAS.RRTTOOKK

    MD5

    bd1f17c3f5f6d4b8b97bcb4d330daec4

    SHA1

    a567f1016f657c93784762925cfcfa7c8ea7b840

    SHA256

    c91623796d2ebc3fc11faf8f9578b56fd4f61a06dec26f5648b9372ae30240da

    SHA512

    0e03ad245df2837ab36ce1387a64aae35b703af2f21e61b1a10fae3f02ffa1eb53f68914ebba27673d3ec69d44d3dc7004d77d97fee1007b5ffdfb9e373db21a

  • memory/1220-7-0x0000000000000000-mapping.dmp

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

    Filesize

    228KB

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

    Filesize

    224KB

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

    Filesize

    6.2MB

  • memory/2008-11-0x0000000000000000-mapping.dmp

  • memory/3440-5-0x0000000000000000-mapping.dmp

  • memory/3828-12-0x0000000000000000-mapping.dmp

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

    Filesize

    392B

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

    Filesize

    24B