Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    26-09-2021 15:41

General

  • Target

    3e201fc20a90e669990e2994d2114b83.exe

  • Size

    139KB

  • MD5

    3e201fc20a90e669990e2994d2114b83

  • SHA1

    24bfc9636c793e7ceb309b08e319b2d925a080bd

  • SHA256

    c8c2f5565b13fbb60b89d11b7e71a03666c3afb2246b87e633cac8023bec0b24

  • SHA512

    4dae9203c1003ca32600d153d7a9f08fa3c50d7c665ee81d4d7608d8f47354e48493d4bb39af2a3259c7882ca0ba38f4db52033b0df3ddf4321cb7118b228591

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 SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3e201fc20a90e669990e2994d2114b83.exe
    "C:\Users\Admin\AppData\Local\Temp\3e201fc20a90e669990e2994d2114b83.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:656
    • C:\Users\Admin\AppData\Local\Temp\3e201fc20a90e669990e2994d2114b83.exe
      "C:\Users\Admin\AppData\Local\Temp\3e201fc20a90e669990e2994d2114b83.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:860
  • C:\Users\Admin\AppData\Local\Temp\EF4C.exe
    C:\Users\Admin\AppData\Local\Temp\EF4C.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:688
  • C:\Users\Admin\AppData\Local\Temp\F5A6.exe
    C:\Users\Admin\AppData\Local\Temp\F5A6.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:796
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\F5A6.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:960
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:3256
  • C:\Users\Admin\AppData\Local\Temp\FA1C.exe
    C:\Users\Admin\AppData\Local\Temp\FA1C.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:3832
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3832 -s 1292
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:912
  • C:\Users\Admin\AppData\Local\Temp\FE53.exe
    C:\Users\Admin\AppData\Local\Temp\FE53.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:416
    • 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
      PID:3668
    • 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
      PID:656
    • 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:2492

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/416-141-0x0000000000970000-0x0000000000971000-memory.dmp

    Filesize

    4KB

  • memory/656-175-0x0000000002240000-0x0000000002263000-memory.dmp

    Filesize

    140KB

  • memory/656-195-0x00000000004D0000-0x000000000061A000-memory.dmp

    Filesize

    1.3MB

  • memory/656-203-0x0000000004C20000-0x0000000004C21000-memory.dmp

    Filesize

    4KB

  • memory/656-181-0x00000000025D0000-0x00000000025F2000-memory.dmp

    Filesize

    136KB

  • memory/656-116-0x0000000000590000-0x0000000000599000-memory.dmp

    Filesize

    36KB

  • memory/656-201-0x0000000000400000-0x00000000004CB000-memory.dmp

    Filesize

    812KB

  • memory/656-199-0x0000000004C24000-0x0000000004C26000-memory.dmp

    Filesize

    8KB

  • memory/656-183-0x0000000004C23000-0x0000000004C24000-memory.dmp

    Filesize

    4KB

  • memory/656-180-0x0000000004C22000-0x0000000004C23000-memory.dmp

    Filesize

    4KB

  • memory/688-134-0x0000000005E90000-0x0000000005E91000-memory.dmp

    Filesize

    4KB

  • memory/688-129-0x0000000005FB0000-0x0000000005FB1000-memory.dmp

    Filesize

    4KB

  • memory/688-153-0x0000000007610000-0x0000000007611000-memory.dmp

    Filesize

    4KB

  • memory/688-154-0x0000000007D10000-0x0000000007D11000-memory.dmp

    Filesize

    4KB

  • memory/688-155-0x0000000008240000-0x0000000008241000-memory.dmp

    Filesize

    4KB

  • memory/688-121-0x0000000077DA0000-0x0000000077F2E000-memory.dmp

    Filesize

    1.6MB

  • memory/688-122-0x0000000000F60000-0x0000000000F61000-memory.dmp

    Filesize

    4KB

  • memory/688-158-0x00000000077E0000-0x00000000077E1000-memory.dmp

    Filesize

    4KB

  • memory/688-159-0x0000000007900000-0x0000000007901000-memory.dmp

    Filesize

    4KB

  • memory/688-160-0x00000000075E0000-0x00000000075E1000-memory.dmp

    Filesize

    4KB

  • memory/688-161-0x0000000007CA0000-0x0000000007CA1000-memory.dmp

    Filesize

    4KB

  • memory/688-162-0x0000000009440000-0x0000000009441000-memory.dmp

    Filesize

    4KB

  • memory/688-127-0x00000000064B0000-0x00000000064B1000-memory.dmp

    Filesize

    4KB

  • memory/688-137-0x0000000005EE0000-0x0000000005EE1000-memory.dmp

    Filesize

    4KB

  • memory/688-128-0x0000000005E20000-0x0000000005E21000-memory.dmp

    Filesize

    4KB

  • memory/688-133-0x0000000005EA0000-0x0000000005EA1000-memory.dmp

    Filesize

    4KB

  • memory/796-143-0x00000000005B0000-0x00000000006FA000-memory.dmp

    Filesize

    1.3MB

  • memory/796-144-0x0000000000400000-0x00000000004F1000-memory.dmp

    Filesize

    964KB

  • memory/860-114-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2492-186-0x0000000002120000-0x00000000021DC000-memory.dmp

    Filesize

    752KB

  • memory/2492-204-0x0000000010000000-0x0000000010018000-memory.dmp

    Filesize

    96KB

  • memory/2492-189-0x0000000000400000-0x00000000004C4000-memory.dmp

    Filesize

    784KB

  • memory/3092-117-0x0000000000A00000-0x0000000000A16000-memory.dmp

    Filesize

    88KB

  • memory/3668-174-0x00000000026A0000-0x00000000026BE000-memory.dmp

    Filesize

    120KB

  • memory/3668-185-0x0000000004BC0000-0x0000000004BC1000-memory.dmp

    Filesize

    4KB

  • memory/3668-190-0x0000000004BC4000-0x0000000004BC6000-memory.dmp

    Filesize

    8KB

  • memory/3668-177-0x0000000000400000-0x00000000004C5000-memory.dmp

    Filesize

    788KB

  • memory/3668-192-0x0000000004BC2000-0x0000000004BC3000-memory.dmp

    Filesize

    4KB

  • memory/3668-194-0x0000000004BC3000-0x0000000004BC4000-memory.dmp

    Filesize

    4KB

  • memory/3668-176-0x00000000005E0000-0x000000000072A000-memory.dmp

    Filesize

    1.3MB

  • memory/3668-172-0x00000000023E0000-0x00000000023FF000-memory.dmp

    Filesize

    124KB

  • memory/3832-136-0x0000000000400000-0x000000000044D000-memory.dmp

    Filesize

    308KB

  • memory/3832-135-0x00000000021C0000-0x00000000021ED000-memory.dmp

    Filesize

    180KB