Analysis

  • max time kernel
    136s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    10-07-2020 10:53

General

  • Target

    update.dll

  • Size

    687KB

  • MD5

    95ac93bd02b3560a77a378d81bc203bf

  • SHA1

    b1a69dcac677a701df089f0eb4e3a195f435fb4a

  • SHA256

    f0dc0efcd9d6cb23cd57f3b26e390e337d8237f1d699b30196d4eacb1d67b300

  • SHA512

    c7b9ece08af3b30448d5dd8def82a0155a5919b0507d424c26298f8d862b91d745ebe62ea2821ff8c2da0da1289038c2b6832f1b5e69920044aa4db950425d50

Malware Config

Extracted

Family

trickbot

Version

1000512

Botnet

chil63

C2

95.171.16.42:443

185.90.61.9:443

5.1.81.68:443

185.99.2.65:443

134.119.191.11:443

85.204.116.100:443

78.108.216.47:443

51.81.112.144:443

194.5.250.121:443

185.14.31.104:443

185.99.2.66:443

107.175.72.141:443

192.3.247.123:443

134.119.191.21:443

85.204.116.216:443

91.235.129.20:443

181.129.104.139:449

181.112.157.42:449

181.129.134.18:449

131.161.253.190:449

Attributes
  • autorun
    Name:pwgrab
ecc_pubkey.base64

Signatures

  • Trickbot

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

  • Suspicious use of WriteProcessMemory 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Templ.dll packer 2 IoCs

    Detects Templ.dll packer which usually loads Trickbot.

  • Reads user/profile data of web browsers 2 TTPs

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

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\update.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3920
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\update.dll,#1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3904
      • C:\Windows\system32\wermgr.exe
        C:\Windows\system32\wermgr.exe
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3844

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3844-3-0x0000000000000000-mapping.dmp

  • memory/3904-0-0x0000000000000000-mapping.dmp

  • memory/3904-1-0x0000000000250000-0x000000000027E000-memory.dmp

    Filesize

    184KB

  • memory/3904-2-0x0000000010000000-0x000000001002D000-memory.dmp

    Filesize

    180KB