Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-08-2024 14:54

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General

  • Target

    05f9891bb4ca2b87b476e3d3f415e329a547d3cb65741b908cd570eb96575767.exe

  • Size

    439KB

  • MD5

    95d8ef6aaeae33dae91636b2bde473b8

  • SHA1

    6e79574a1fd0af774f985b3fcf646039d30cc7e8

  • SHA256

    05f9891bb4ca2b87b476e3d3f415e329a547d3cb65741b908cd570eb96575767

  • SHA512

    2982681c763db9dc3af710db4d8ba260d8c5591a37a9df13529a4e7a0a08cfd7fd6dbde5c6922b69baeeaf3222212a6697cf961304ec386e1dd5f5b022e13061

  • SSDEEP

    6144:XsaeVjbUSAODc/mDHJKzBJvPKcQQfHAijx7TSig0yw6J:XsamHDDpuBhKX2jlGiyw6

Score
10/10
defense_evasiondiscoveryransomwarespywarestealer

Malware Config

Extracted

Path

C:\HdbtqCuyh.README.txt

Ransom Note
[Your Files Have Been Encrypted] Hello, Your files have been encrypted with strong encryption algorithms. To regain access to your data, you need to follow the instructions below: Do Not Attempt to Recover Your Files: Any attempt to recover your files using third-party tools will result in permanent data loss. Pay the Ransom: You must pay a ransom of 1 Bitcoin to receive the decryption key. Payment must be made within 72 hours to avoid data loss. Contact Us on Telegram: To get the payment details and further instructions, contact us via Telegram at @BIBIL_0DAY. Decryption Key: After payment is confirmed, we will send you the decryption key and instructions on how to unlock your files. Warning: If you do not contact us or pay within the given timeframe, your data will be permanently lost. Do not attempt to contact us via any other means. We will not respond. Your encrypted files are your responsibility. Telegram Username: @BIBIL_0DAY

Signatures

  • Renames multiple (601) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Drops desktop.ini file(s) 2 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

    defense_evasion
  • Drops file in System32 directory 4 IoCs
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\05f9891bb4ca2b87b476e3d3f415e329a547d3cb65741b908cd570eb96575767.exe
    "C:\Users\Admin\AppData\Local\Temp\05f9891bb4ca2b87b476e3d3f415e329a547d3cb65741b908cd570eb96575767.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2752
    • C:\Users\Admin\AppData\Local\Temp\05f9891bb4ca2b87b476e3d3f415e329a547d3cb65741b908cd570eb96575767.exe
      "C:\Users\Admin\AppData\Local\Temp\05f9891bb4ca2b87b476e3d3f415e329a547d3cb65741b908cd570eb96575767.exe"
      2⤵
      • Drops desktop.ini file(s)
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2176
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
        • Drops file in System32 directory
        PID:5312
      • C:\ProgramData\C45A.tmp
        "C:\ProgramData\C45A.tmp"
        3⤵
        • Checks computer location settings
        • Deletes itself
        • Executes dropped EXE
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: RenamesItself
        • Suspicious use of WriteProcessMemory
        PID:3400
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\C45A.tmp >> NUL
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2480
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:5236
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:4984
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{704783D9-2631-4292-9869-8A24AC9961D6}.xps" 133677752902850000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:1884
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2752 -ip 2752
      1⤵
        PID:3832

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\$Recycle.Bin\S-1-5-21-1194130065-3471212556-1656947724-1000\OOOOOOOOOOO
        Filesize

        129B

        MD5

        a820b290cbf31c3f1e1a14a9b9e788d4

        SHA1

        ef98c10dfa0f61d07491348e2887af053b559b96

        SHA256

        78c71c667bbc2333c07731c41d0a3e6567d4e6110e2952c460da4d141ed69999

        SHA512

        d24c32905e8ac61b0399072845e0a01158cd5f5ed3029d6ed245b279f89909ca616e698087839392ade014c1c86976f1a7766533695961cd10e9d01a443d2792

        Download Submit

      • C:\HdbtqCuyh.README.txt
        Filesize

        980B

        MD5

        751940dccf55d21d7dcb7b8e614154d9

        SHA1

        5ef19237b4aaede4e95992356b2ec1481c1d8253

        SHA256

        875eafed5ef1785ec9cbd071d039aea59a1cfee0b62a0105d9b57118860ceac5

        SHA512

        afcfb8806c17fcdf1e1160a92719a79617ce4c4f6339c412bfaa3cfade6d290e2ecc936bec9f30b631ecef304744caa2e2a1a3f89e4e4e0f705fe6882e3236ce

        Download Submit

      • C:\ProgramData\C45A.tmp
        Filesize

        14KB

        MD5

        294e9f64cb1642dd89229fff0592856b

        SHA1

        97b148c27f3da29ba7b18d6aee8a0db9102f47c9

        SHA256

        917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

        SHA512

        b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

        Download Submit

      • C:\Users\Admin\AppData\Local\Temp\{36E0B44C-CD97-45C7-81C3-15661BF630DB}
        Filesize

        4KB

        MD5

        10e835972729eb899110c32b63e55ff0

        SHA1

        80c900331dc68806aca358ad11f8fae6e1709873

        SHA256

        e6600d9382080f4faa5a66552e35a0faa998a9d72688c2ed399b0ee2785ffe5c

        SHA512

        6b8867a207a12aa8464c030928ec8cbf1df3f0abc63d6eefaccad05b58482f797ec0c473ecd331d9d29f2fedf30784071c2041e868f6eb8889dfbe38d1c0c50f

        Download Submit

      • C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
        Filesize

        4KB

        MD5

        b3762c7dc5be07f238a85060634b6656

        SHA1

        31007fea5b189565fc547896a7f4065f76e87ff1

        SHA256

        01e471b5e96c76d016d1be3ce1b1a9bd320577b384aa8448cb4dc72286165d3e

        SHA512

        75c27998b4c35526bcd3cda4bb8715f40312401ac85b557db330487d09abe4e88f4f95fce23bf583e14deca9411bf520f26b3653f42d6ecff10ecbde276df05a

        Download Submit

      • F:\$RECYCLE.BIN\S-1-5-21-1194130065-3471212556-1656947724-1000\DDDDDDDDDDD
        Filesize

        129B

        MD5

        017ee5c056bb1628e8acc7e96b7d2500

        SHA1

        81a9626dc24c9a1a308760c4a84a0910828bf109

        SHA256

        130221a6b62388db28522b18e8c9959a477d95458e1d7fe01acb540e19d388f0

        SHA512

        3f413dd40dda37e09cd24b89676b9b03636e2130bb0177bb6bcbf188119d35f2390f8d88353eaa24770751f5c69033bde22e2d1c11818ae6a74ad562aba2c0ff

        Download Submit

      • memory/1884-2884-0x00007FFEB2110000-0x00007FFEB2120000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1884-2882-0x00007FFEB2110000-0x00007FFEB2120000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1884-2888-0x00007FFEAFCD0000-0x00007FFEAFCE0000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1884-2887-0x00007FFEAFCD0000-0x00007FFEAFCE0000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1884-2883-0x00007FFEB2110000-0x00007FFEB2120000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1884-2886-0x00007FFEB2110000-0x00007FFEB2120000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1884-2885-0x00007FFEB2110000-0x00007FFEB2120000-memory.dmp

        Filesize

        64KB

        Download

      • memory/2176-20-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-541-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-2849-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-2863-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-2862-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-2860-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-12-0x0000000002C50000-0x0000000002C60000-memory.dmp

        Filesize

        64KB

        Download

      • memory/2176-2851-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-2-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-13-0x0000000002C50000-0x0000000002C60000-memory.dmp

        Filesize

        64KB

        Download

      • memory/2176-23-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-15-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-113-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-14-0x0000000002C50000-0x0000000002C60000-memory.dmp

        Filesize

        64KB

        Download

      • memory/2176-11-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download

      • memory/2176-7-0x0000000000BB0000-0x0000000000BD8000-memory.dmp

        Filesize

        160KB

        Download