Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v200722
  • submitted
    22-09-2020 12:07

General

  • Target

    4km8TqjC.tmp.exe

  • Size

    189KB

  • MD5

    2888f57e020661ec120a6ad3d7299a48

  • SHA1

    97e5a7863375fb937603cc4631ffe4c1cb0a49ef

  • SHA256

    a8cbc1707cbf767b2923fd7d77a8ab5b7d7be65af2439afabb41e8715f31c092

  • SHA512

    7f8ea966a9b29530c5ec997aebc0583d52c9653f775b60c271452ad6890e58e3a51c77c4b866babdb85372b0994bb2e5a68fabd0fcc4a1a4655c2e9522a93703

Malware Config

Extracted

Path

C:\Users\Admin\AppData\LocalLow\machineinfo.txt

Family

raccoon

Ransom Note
[Raccoon Stealer] - v1.5.13-af-hotfix Release Build compiled on Mon Jul 6 14:33:03 2020 Launched at: 2020.09.22 - 14:04:21 GMT Bot_ID: 18823CA4-5761-4226-8787-CF36135F1C68_Admin Running on a desktop =R=A=C=C=O=O=N= - Cookies: 0 - Passwords: 5 - Files: 0 System Information: - System Language: English - System TimeZone: -0 hrs - IP: 154.61.71.13 - Location: 37.750999, -97.821999 | ?, ?, United States (?) - ComputerName: LZUKLIOU - Username: Admin - Windows version: NT 10.0 - Product name: Windows 10 Pro - System arch: x64 - CPU: Persocon Processor 2.5+ (2 cores) - RAM: 4095 MB (715 MB used) - Screen resolution: 1280x720 - Display devices: 0) Microsoft Basic Display Adapter ============

Extracted

Family

smokeloader

Version

2020

C2

http://dkajsdjiqwdwnfj.info/

http://2831ujedkdajsdj.info/

http://928eijdksasnfss.info/

https://dkajsdjiqwdwnfj.info/

https://2831ujedkdajsdj.info/

https://928eijdksasnfss.info/

rc4.i32
rc4.i32

Extracted

Family

zloader

Botnet

DLLobnova

Campaign

02.09.2020dll

C2

https://fqnvtmqsywublocpheas.ru/gate.php

https://fqnvtmqsywublocpheas.su/gate.php

https://fqnvtmqsywublocpheas.eu/gate.php

https://fqnvtmqsywuikdjsmasablocpheas.eu/gate.php

https://fqnssvtmqsywufblocpheas.eu/gate.php

https://fqnvtmqsywublfocpheas.eu/gate.php

https://fqnvtmqsyfwublocpheas.eu/gate.php

https://fqnvtmqsywubflocpheas.eu/gate.php

rc4.plain
rsa_pubkey.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Raccoon log file 1 IoCs

    Detects a log file produced by the Raccoon Stealer.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Zloader, Terdot, DELoader, ZeusSphinx

    Zloader is a malware strain that was initially discovered back in August 2015.

  • Blacklisted process makes network request 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 8 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • JavaScript code in executable 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2600 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4km8TqjC.tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\4km8TqjC.tmp.exe"
    1⤵
    • Loads dropped DLL
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:3908
  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\DA1A.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3948
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\DA1A.dll
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1612
      • C:\Windows\SysWOW64\msiexec.exe
        msiexec.exe
        3⤵
        • Blacklisted process makes network request
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        PID:3424
  • C:\Users\Admin\AppData\Local\Temp\DB34.exe
    C:\Users\Admin\AppData\Local\Temp\DB34.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1872
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\DB34.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2992
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:2384

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1872-11-0x0000000006236000-0x0000000006237000-memory.dmp

    Filesize

    4KB

  • memory/1872-12-0x0000000007DA0000-0x0000000007DA1000-memory.dmp

    Filesize

    4KB

  • memory/2984-3-0x0000000001190000-0x00000000011A6000-memory.dmp

    Filesize

    88KB

  • memory/3424-19-0x0000000002DD0000-0x0000000002DFB000-memory.dmp

    Filesize

    172KB

  • memory/3908-0-0x0000000006237000-0x0000000006238000-memory.dmp

    Filesize

    4KB

  • memory/3908-1-0x0000000007C20000-0x0000000007C21000-memory.dmp

    Filesize

    4KB