Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    05/10/2021, 06:02

General

  • Target
    a33039f06bcfc8cca0c615c1c35cdb0c.exe
  • Size 254KB
  • Sample211005-grgh9ahfak
  • SHA256 1f3057ef0ac66ca277f6e443be3547e4db15b989ef0874b2a0770caa8441dafd
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://fiskahlilian16.top/

  • http://paishancho17.top/

  • http://ydiannetter18.top/

  • http://azarehanelle19.top/

  • http://quericeriant20.top/

rc4.i32
rc4.i32

Extracted

Family
  • raccoon

Version
  • 1.8.2

Botnet
  • 19c2ecb55a38664aa514ead2a514e7094696c747

Attributes
  • url4cnc

    http://teletop.top/magesty12

    http://teleta.top/magesty12

    https://t.me/magesty12

rc4.plain
rc4.plain

Extracted

Family
  • raccoon

Version
  • 1.8.1

Botnet
  • 5ff0ccb2bc00dc52d1ad09949e9c7663bc9ca4d4

Attributes
  • url4cnc

    https://t.me/agrybirdsgamerept

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • suricata: ET MALWARE Win32.Raccoon Stealer CnC Activity (dependency download)

    suricata: ET MALWARE Win32.Raccoon Stealer CnC Activity (dependency download)

  • suricata: ET MALWARE Win32.Raccoon Stealer Data Exfil Attempt

    suricata: ET MALWARE Win32.Raccoon Stealer Data Exfil Attempt

  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 5 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.

  • Checks installed software on the system 1 TTPs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Program crash 2 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
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a33039f06bcfc8cca0c615c1c35cdb0c.exe
    "C:\Users\Admin\AppData\Local\Temp\a33039f06bcfc8cca0c615c1c35cdb0c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4648
    • C:\Users\Admin\AppData\Local\Temp\a33039f06bcfc8cca0c615c1c35cdb0c.exe
      "C:\Users\Admin\AppData\Local\Temp\a33039f06bcfc8cca0c615c1c35cdb0c.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4672
  • C:\Users\Admin\AppData\Local\Temp\AF75.exe
    C:\Users\Admin\AppData\Local\Temp\AF75.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4720
    • C:\Users\Admin\AppData\Local\Temp\AF75.exe
      "C:\Users\Admin\AppData\Local\Temp\AF75.exe"
      2⤵
      • Executes dropped EXE
      PID:4784
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4784 -s 792
        3⤵
        • Suspicious use of NtCreateProcessExOtherParentProcess
        • Drops file in Windows directory
        • Program crash
        • Suspicious use of AdjustPrivilegeToken
        PID:4900
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 916
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:4876
  • C:\Users\Admin\AppData\Local\Temp\B90B.exe
    C:\Users\Admin\AppData\Local\Temp\B90B.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:4920
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\B90B.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3888
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:4036

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3048-117-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

        memory/4648-114-0x0000000000030000-0x0000000000039000-memory.dmp

        memory/4672-115-0x0000000000400000-0x0000000000409000-memory.dmp

        memory/4720-121-0x0000000000280000-0x0000000000281000-memory.dmp

        memory/4720-129-0x0000000004D00000-0x0000000004D03000-memory.dmp

        memory/4720-125-0x0000000004C00000-0x0000000004C01000-memory.dmp

        memory/4720-124-0x00000000053B0000-0x00000000053B1000-memory.dmp

        memory/4720-123-0x0000000004D10000-0x0000000004D11000-memory.dmp

        memory/4720-122-0x0000000004C10000-0x0000000004C65000-memory.dmp

        memory/4784-130-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4784-126-0x0000000000400000-0x0000000000490000-memory.dmp

        memory/4920-137-0x0000000000400000-0x00000000008AB000-memory.dmp

        memory/4920-136-0x0000000000D30000-0x0000000000DC0000-memory.dmp