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Analysis

  • max time kernel
    132s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    06/09/2024, 06:45

General

  • Target

    2024090698157dc534755cc2cc6325500707f7d4stop.exe

  • Size

    1.1MB

  • MD5

    98157dc534755cc2cc6325500707f7d4

  • SHA1

    59621075dfa80ee4a1691e24fbb95f7f9314dc04

  • SHA256

    8b53d0a0c9e60040048b621009f3a580340dda75341f3b298d4869352396fc0e

  • SHA512

    9cb394871d98c0d8f6b20dd5261803563f3298ccfa6b9da2e6d5829d740fe1437b1f263438d968ca711a7d13d3ef2fa8ffdc1a4f330865842be8885d4706085d

  • SSDEEP

    24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8jWQHUq7:F0dwAYZt6C31WeTVRPOhj7Uq7

Malware Config

Extracted

Family

djvu

C2

http://tzgl.org/test1/get.php

Attributes
  • extension

    .qqqw

  • offline_id

    Gy1ekaHyw11ZDr43dKFxYo9wA3NxFYOUEc6Pwvt1

  • payload_url

    http://lencu.top/dl/build01.exe

    http://tzgl.org/files/1/build02.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-veBR09KNyi Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0377UIhfSd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 1 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024090698157dc534755cc2cc6325500707f7d4stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2024090698157dc534755cc2cc6325500707f7d4stop.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2504
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\baa9eccf-656c-4466-a5bc-3d3c1d74a7d1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:2804
    • C:\Users\Admin\AppData\Local\Temp\2024090698157dc534755cc2cc6325500707f7d4stop.exe
      "C:\Users\Admin\AppData\Local\Temp\2024090698157dc534755cc2cc6325500707f7d4stop.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:2728

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    1KB

    MD5

    7fb5fa1534dcf77f2125b2403b30a0ee

    SHA1

    365d96812a69ac0a4611ea4b70a3f306576cc3ea

    SHA256

    33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

    SHA512

    a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    a4048a88d7cd1da71490df6efa72f407

    SHA1

    b564d43e8f1fc0e51495adc4935e209826aa53e7

    SHA256

    1001fe8071cb602c300f33eee0929f14832216ec21b38d209af7e9feda68bf1b

    SHA512

    332d301ef1963944188749ee865da8ba3f2e7f81ebb489bb3a286653244c3abdc233777d67e9aa24161dfd97cb28696c5df1dedc56dccbc7df811f3e96e036a5

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    170B

    MD5

    af1a9fae758aa671579f99a828d78a8f

    SHA1

    53433675e68067c1f2bd3fc40463d076d707f78e

    SHA256

    75391f0c0fd6190912e073aa96a84743905c1cdd483697762630db9960d619bd

    SHA512

    157e10da042d92ce4399c59af072f6b9bb68ad838590bb4fde2688534aa54860d148be920c84ae17077e2a442a1479b9da4c983f1c1ebd713e769b35801d03fb

  • C:\Users\Admin\AppData\Local\Temp\Cab92AE.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\baa9eccf-656c-4466-a5bc-3d3c1d74a7d1\2024090698157dc534755cc2cc6325500707f7d4stop.exe

    Filesize

    1.1MB

    MD5

    98157dc534755cc2cc6325500707f7d4

    SHA1

    59621075dfa80ee4a1691e24fbb95f7f9314dc04

    SHA256

    8b53d0a0c9e60040048b621009f3a580340dda75341f3b298d4869352396fc0e

    SHA512

    9cb394871d98c0d8f6b20dd5261803563f3298ccfa6b9da2e6d5829d740fe1437b1f263438d968ca711a7d13d3ef2fa8ffdc1a4f330865842be8885d4706085d