Overview

overview

10

Static

static

8

Subconract_1541.xls

windows7_x64

10

Subconract_1541.xls

windows10_x64

10

Analysis

  • max time kernel
    146s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    14-01-2021 07:11

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General

  • Target

    Subconract_1541.xls

  • Size

    805KB

  • MD5

    90501b4eda1eaacd5773c77717050e51

  • SHA1

    31a5e6dab54af69ff3991af5f3c2e8fc83daf975

  • SHA256

    0b110be9ae7f5755dad4e964cd94566a0252586a000feb669c5dd75b2307b214

  • SHA512

    dbc8a965d20aa95e9e3bfde5abcc274ef08b5210e5432f940ce2446a244b2eef19cb216bb4799537e39e6000b1083256cac7e64938a938fe09c6471fe557adf3

Score
10/10
dridex111botnetloaderransomware

Malware Config

Extracted

Family

dridex

Botnet

111

C2

52.73.70.149:443

8.4.9.152:3786

185.246.87.202:3098

50.116.111.64:5353
rc4.plain
rc4.plain

Signatures

  • Dridex

    Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.

    botnetdridex
  • Process spawned unexpected child process 1 IoCs

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

  • Dridex Loader 1 IoCs

    Detects Dridex both x86 and x64 loader in memory.

    botnetloader
  • Blocklisted process makes network request 8 IoCs
  • Loads dropped DLL 4 IoCs
  • JavaScript code in executable 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

    ransomware
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
    adwarespyware
  • Modifies registry class 280 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
    evasionspywaretrojan
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 10 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\Subconract_1541.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:1096
  • C:\Windows\system32\wbem\wmiC.exe
    wmiC
    1⤵
    • Process spawned unexpected child process
    • Blocklisted process makes network request
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:/Windows/Temp//7fwdc.dll InitHelperDll
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1764
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:/Windows/Temp//7fwdc.dll InitHelperDll
        3⤵
        • Loads dropped DLL
        PID:552

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\4750A.xSl
    MD5

    c26c0ca270eb6012e3db0c14f7cb9565

    SHA1

    3e8aa4be680a352419d217da7fc125053edf8153

    SHA256

    507c250392848fbd9178ec54b3329f119e380bbc6581b1eef5a790cfe797af6e

    SHA512

    0788b8feb1fc2eee4a0af8e6d51724ab54bb99256f4aac46ca24711d82795ad3a60499619feb7ac40a91bc1e4e36374fefe7baa1d35f24f1d66a146db524c910

    Download Submit
  • C:\Windows\Temp\7fwdc.dll
    MD5

    5b33d3f8ede9d513108ca5ca4238e6af

    SHA1

    5726eb20a352e352133ff953e5200c7711c431e8

    SHA256

    51d3fae271586d2cd52c3b58163f5582d86b19398bcb89a30bd41422123b69b0

    SHA512

    353b85bc46b61573119985660b585cc1cfe8ebd88d45fd8ee3cc1b1356c17c804227e10a2ed4cab017063921bd66c3195b3f37f1e7404fc14a784a43380ae1fe

    Download Submit
  • \Windows\Temp\7fwdc.dll
    MD5

    5b33d3f8ede9d513108ca5ca4238e6af

    SHA1

    5726eb20a352e352133ff953e5200c7711c431e8

    SHA256

    51d3fae271586d2cd52c3b58163f5582d86b19398bcb89a30bd41422123b69b0

    SHA512

    353b85bc46b61573119985660b585cc1cfe8ebd88d45fd8ee3cc1b1356c17c804227e10a2ed4cab017063921bd66c3195b3f37f1e7404fc14a784a43380ae1fe

    Download Submit
  • \Windows\Temp\7fwdc.dll
    MD5

    5b33d3f8ede9d513108ca5ca4238e6af

    SHA1

    5726eb20a352e352133ff953e5200c7711c431e8

    SHA256

    51d3fae271586d2cd52c3b58163f5582d86b19398bcb89a30bd41422123b69b0

    SHA512

    353b85bc46b61573119985660b585cc1cfe8ebd88d45fd8ee3cc1b1356c17c804227e10a2ed4cab017063921bd66c3195b3f37f1e7404fc14a784a43380ae1fe

    Download Submit
  • \Windows\Temp\7fwdc.dll
    MD5

    5b33d3f8ede9d513108ca5ca4238e6af

    SHA1

    5726eb20a352e352133ff953e5200c7711c431e8

    SHA256

    51d3fae271586d2cd52c3b58163f5582d86b19398bcb89a30bd41422123b69b0

    SHA512

    353b85bc46b61573119985660b585cc1cfe8ebd88d45fd8ee3cc1b1356c17c804227e10a2ed4cab017063921bd66c3195b3f37f1e7404fc14a784a43380ae1fe

    Download Submit
  • \Windows\Temp\7fwdc.dll
    MD5

    5b33d3f8ede9d513108ca5ca4238e6af

    SHA1

    5726eb20a352e352133ff953e5200c7711c431e8

    SHA256

    51d3fae271586d2cd52c3b58163f5582d86b19398bcb89a30bd41422123b69b0

    SHA512

    353b85bc46b61573119985660b585cc1cfe8ebd88d45fd8ee3cc1b1356c17c804227e10a2ed4cab017063921bd66c3195b3f37f1e7404fc14a784a43380ae1fe

    Download Submit
  • memory/552-6-0x0000000000000000-mapping.dmp
    Download
  • memory/552-11-0x000000006BD50000-0x000000006BD6F000-memory.dmp
    Filesize

    124KB

    Download
  • memory/744-3-0x000007FEF6500000-0x000007FEF677A000-memory.dmp
    Filesize

    2.5MB

    Download
  • memory/1764-4-0x0000000000000000-mapping.dmp
    Download