Analysis

  • max time kernel
    151s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    26-09-2021 16:11

General

  • Target

    831ba3bb4dfd40bf0408d07a186eb216.exe

  • Size

    140KB

  • MD5

    831ba3bb4dfd40bf0408d07a186eb216

  • SHA1

    adf6f3514edc63b5ce5b91d3bc781a13bb176247

  • SHA256

    f6ede8409878ceb95b88f9cc7064b816568a0be6a933676709152de794173e1a

  • SHA512

    e1c4f66d3aa75dce06993a49bc511cfaae178651b96860114f49df36ff48a5e4f8c7eb8b26a4675b0d53597a103034a7c06f1be7a4d60fdf9638af15c3546da7

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://naghenrietti1.top/

http://kimballiett2.top/

http://xadriettany3.top/

http://jebeccallis4.top/

http://nityanneron5.top/

http://umayaniela6.top/

http://lynettaram7.top/

http://sadineyalas8.top/

http://geenaldencia9.top/

http://aradysiusep10.top/

rc4.i32
rc4.i32

Extracted

Family

raccoon

Botnet

5ff0ccb2bc00dc52d1ad09949e9c7663bc9ca4d4

Attributes
  • url4cnc

    https://t.me/agrybirdsgamerept

rc4.plain
rc4.plain

Extracted

Family

redline

Botnet

karma

C2

94.103.9.133:39323

Extracted

Family

redline

Botnet

Bliss

C2

185.237.98.178:62607

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • Generic Chinese Botnet

    A botnet originating from China which is currently unnamed publicly.

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 4 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • 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

  • Arkei Stealer Payload 1 IoCs
  • Chinese Botnet Payload 1 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 7 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • 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.

  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor 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 64 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\831ba3bb4dfd40bf0408d07a186eb216.exe
    "C:\Users\Admin\AppData\Local\Temp\831ba3bb4dfd40bf0408d07a186eb216.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:568
    • C:\Users\Admin\AppData\Local\Temp\831ba3bb4dfd40bf0408d07a186eb216.exe
      "C:\Users\Admin\AppData\Local\Temp\831ba3bb4dfd40bf0408d07a186eb216.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:3152
  • C:\Users\Admin\AppData\Local\Temp\C956.exe
    C:\Users\Admin\AppData\Local\Temp\C956.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:356
  • C:\Users\Admin\AppData\Local\Temp\CE58.exe
    C:\Users\Admin\AppData\Local\Temp\CE58.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1384
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\CE58.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2096
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:3988
  • C:\Users\Admin\AppData\Local\Temp\D406.exe
    C:\Users\Admin\AppData\Local\Temp\D406.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:1628
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 1276
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:756
  • C:\Users\Admin\AppData\Local\Temp\DA02.exe
    C:\Users\Admin\AppData\Local\Temp\DA02.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:3972
    • C:\Users\Admin\AppData\Local\Temp\SindonsWelfare_2021-09-26_15-02.exe
      "C:\Users\Admin\AppData\Local\Temp\SindonsWelfare_2021-09-26_15-02.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2188
    • C:\Users\Admin\AppData\Local\Temp\SolanumsYoghurt_2021-09-26_14-52.exe
      "C:\Users\Admin\AppData\Local\Temp\SolanumsYoghurt_2021-09-26_14-52.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3032
    • C:\Users\Admin\AppData\Local\Temp\fbf.exe
      "C:\Users\Admin\AppData\Local\Temp\fbf.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Checks processor information in registry
      • Suspicious use of SetWindowsHookEx
      PID:3964

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/356-134-0x0000000005640000-0x0000000005641000-memory.dmp

    Filesize

    4KB

  • memory/356-133-0x00000000056D0000-0x00000000056D1000-memory.dmp

    Filesize

    4KB

  • memory/356-124-0x00000000013D0000-0x00000000013D1000-memory.dmp

    Filesize

    4KB

  • memory/356-162-0x0000000007C00000-0x0000000007C01000-memory.dmp

    Filesize

    4KB

  • memory/356-159-0x0000000007460000-0x0000000007461000-memory.dmp

    Filesize

    4KB

  • memory/356-144-0x0000000005710000-0x0000000005711000-memory.dmp

    Filesize

    4KB

  • memory/356-158-0x0000000006D70000-0x0000000006D71000-memory.dmp

    Filesize

    4KB

  • memory/356-155-0x0000000006FD0000-0x0000000006FD1000-memory.dmp

    Filesize

    4KB

  • memory/356-156-0x00000000070F0000-0x00000000070F1000-memory.dmp

    Filesize

    4KB

  • memory/356-157-0x0000000007F30000-0x0000000007F31000-memory.dmp

    Filesize

    4KB

  • memory/356-129-0x00000000057A0000-0x00000000057A1000-memory.dmp

    Filesize

    4KB

  • memory/356-128-0x0000000005670000-0x0000000005671000-memory.dmp

    Filesize

    4KB

  • memory/356-127-0x0000000005C60000-0x0000000005C61000-memory.dmp

    Filesize

    4KB

  • memory/356-126-0x0000000077C50000-0x0000000077DDE000-memory.dmp

    Filesize

    1.6MB

  • memory/356-153-0x0000000006E00000-0x0000000006E01000-memory.dmp

    Filesize

    4KB

  • memory/356-154-0x0000000007500000-0x0000000007501000-memory.dmp

    Filesize

    4KB

  • memory/568-114-0x0000000000500000-0x0000000000509000-memory.dmp

    Filesize

    36KB

  • memory/1384-137-0x0000000002150000-0x00000000021E0000-memory.dmp

    Filesize

    576KB

  • memory/1384-138-0x0000000000400000-0x00000000004F1000-memory.dmp

    Filesize

    964KB

  • memory/1628-135-0x00000000021B0000-0x00000000021DD000-memory.dmp

    Filesize

    180KB

  • memory/1628-136-0x0000000000400000-0x000000000044D000-memory.dmp

    Filesize

    308KB

  • memory/2188-174-0x00000000024B0000-0x00000000024CE000-memory.dmp

    Filesize

    120KB

  • memory/2188-177-0x0000000001FB0000-0x0000000001FE0000-memory.dmp

    Filesize

    192KB

  • memory/2188-196-0x0000000002373000-0x0000000002374000-memory.dmp

    Filesize

    4KB

  • memory/2188-195-0x0000000002372000-0x0000000002373000-memory.dmp

    Filesize

    4KB

  • memory/2188-191-0x0000000005960000-0x0000000005961000-memory.dmp

    Filesize

    4KB

  • memory/2188-187-0x0000000002374000-0x0000000002376000-memory.dmp

    Filesize

    8KB

  • memory/2188-184-0x0000000002370000-0x0000000002371000-memory.dmp

    Filesize

    4KB

  • memory/2188-172-0x0000000002440000-0x000000000245F000-memory.dmp

    Filesize

    124KB

  • memory/2188-183-0x0000000000400000-0x00000000004C5000-memory.dmp

    Filesize

    788KB

  • memory/2708-117-0x0000000000840000-0x0000000000856000-memory.dmp

    Filesize

    88KB

  • memory/3032-181-0x0000000004BB2000-0x0000000004BB3000-memory.dmp

    Filesize

    4KB

  • memory/3032-198-0x0000000004BB4000-0x0000000004BB6000-memory.dmp

    Filesize

    8KB

  • memory/3032-175-0x0000000002230000-0x0000000002253000-memory.dmp

    Filesize

    140KB

  • memory/3032-201-0x0000000000400000-0x00000000004CB000-memory.dmp

    Filesize

    812KB

  • memory/3032-203-0x0000000004BB3000-0x0000000004BB4000-memory.dmp

    Filesize

    4KB

  • memory/3032-180-0x0000000002440000-0x0000000002462000-memory.dmp

    Filesize

    136KB

  • memory/3032-202-0x0000000004BB0000-0x0000000004BB1000-memory.dmp

    Filesize

    4KB

  • memory/3032-200-0x0000000000520000-0x0000000000557000-memory.dmp

    Filesize

    220KB

  • memory/3152-115-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/3964-190-0x0000000002190000-0x000000000224C000-memory.dmp

    Filesize

    752KB

  • memory/3964-193-0x0000000000400000-0x00000000004C4000-memory.dmp

    Filesize

    784KB

  • memory/3964-204-0x0000000010000000-0x0000000010018000-memory.dmp

    Filesize

    96KB

  • memory/3972-142-0x0000000000940000-0x0000000000941000-memory.dmp

    Filesize

    4KB