Analysis

  • max time kernel
    141s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    26/01/2024, 10:51

General

  • Target

    395590.exe

  • Size

    749KB

  • MD5

    87ba288f14fbf826d4cf061d9f8e72ed

  • SHA1

    ec1f877e40b5e8917953e54eb51834a15335aa6e

  • SHA256

    56529b359e4c4695a3e290752d61c59ad3327a16574da95ca69a214552241a63

  • SHA512

    200457f3c9f1120c6c97df354d7e9898e0a3dfecb6fb771985f9e28adaab29841e03e37e1100b759ae7baf89072859082aa3ddc340a8501396426441f8391f95

  • SSDEEP

    12288:lL++FQkxaH3tr2VBEMuw6mQVSql6SoP0bSJg5J8m5ubKrD4Akb5i2yj5+:U+FQkxI2E5oPI0Kp5ubKX4S+

Malware Config

Extracted

Family

djvu

C2

http://habrafa.com/test2/get.php

Attributes
  • extension

    .cdxx

  • offline_id

    LBxKKiegnAy53rpqH3Pj2j46vwldiEt9kqHSuMt1

  • payload_url

  • 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-iVcrVFVRqu Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0847ASdw

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 13 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.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\395590.exe
    "C:\Users\Admin\AppData\Local\Temp\395590.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2340
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\fa5744ef-f1e6-4b85-a51b-a5124ea13e9b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      PID:3036
    • C:\Users\Admin\AppData\Local\Temp\395590.exe
      "C:\Users\Admin\AppData\Local\Temp\395590.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2692
      • C:\Users\Admin\AppData\Local\Temp\395590.exe
        "C:\Users\Admin\AppData\Local\Temp\395590.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2556
  • C:\Users\Admin\AppData\Local\Temp\395590.exe
    "C:\Users\Admin\AppData\Local\Temp\395590.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1948

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

          Filesize

          1KB

          MD5

          73ce21ff1fb2989f6350ace9274ae9b5

          SHA1

          7db6c387eb8351f3e8e361d10224711c3477821e

          SHA256

          d7005273bab949c42fcc73eac7820c4c5f08df1e9095020cdb0e17fc9e282d50

          SHA512

          a43767a55a559a8bf51d5dcb9bc378167f63e15f571b6be35903048570d036fed2a3f6a37c91f469ee9808d245cdd875b9dad38556e6bf97258a82c7071aeab3

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

          Filesize

          724B

          MD5

          8202a1cd02e7d69597995cabbe881a12

          SHA1

          8858d9d934b7aa9330ee73de6c476acf19929ff6

          SHA256

          58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

          SHA512

          97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

          Filesize

          410B

          MD5

          8afa83e248131a40ab5488f063a5fba0

          SHA1

          9f5289cde6ceb742ef8ff9d885ee5e78e482e85b

          SHA256

          5a9bb8132017e7fefd93921830da9e89f2947386c5534356f4036b5e8ca4aa61

          SHA512

          b43c20428aec4803d83537978d3b3f86ca225f09a3e84f16c0d1be0d341ad57c8fe221e6017eedb4d866bc7816a6b4618a952815578a43e6c73f1b76d5f87f77

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

          Filesize

          344B

          MD5

          5cd9580919262d54c0b9527dfaacc8a8

          SHA1

          d22afc7fc2409beef416def6b4272064a34ae03f

          SHA256

          80cfebff580c055854c7f6bf75050e4ab6d130012e0dc9278bb0d532420066e3

          SHA512

          1d393e8dcffc219d00caf6e3a6ac349fd93fb2e210dd087bf6d5ec532826753510d123a84f15cc7aba622c03b6b86383e738b35dc9e041963282ae98cb075cdb

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

          Filesize

          392B

          MD5

          9d70d03b49202728c6006bb3f8e708f4

          SHA1

          cbce816abb92923e90a1f09dab764974bf978832

          SHA256

          24141c4938503ed6d8fc131d39be87fc95e4a6e1a24518a712e556f15356a6b6

          SHA512

          9c22fd47ae27a7fc3673a7f2eae0eabbe3fb30df10cca4967552715763128a0fc9365a377e68f2e855ed5670dfb66392e6ad8ca4cfcf7ab1128eec035904df90

        • C:\Users\Admin\AppData\Local\Temp\Cab1F53.tmp

          Filesize

          65KB

          MD5

          ac05d27423a85adc1622c714f2cb6184

          SHA1

          b0fe2b1abddb97837ea0195be70ab2ff14d43198

          SHA256

          c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

          SHA512

          6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

        • C:\Users\Admin\AppData\Local\fa5744ef-f1e6-4b85-a51b-a5124ea13e9b\395590.exe

          Filesize

          106KB

          MD5

          7f26953f4b3b212dfc64af7cd428e45e

          SHA1

          4db48a550b19341dfeeec94d45620033146cd6e7

          SHA256

          e7669c6094ee134e27ab00decdda06061024f3ab6a01c1c8d9dcd6b6a1cc1d0e

          SHA512

          e8e98fa59d66de64e876b42a099c8b41b9f145902e009bcc982789135dbca3f45271e303c9281639d255854f4edf3b4452949addcea0e4ce15982fc2f72a5ef1

        • memory/1948-0-0x0000000004360000-0x000000000447B000-memory.dmp

          Filesize

          1.1MB

        • memory/2340-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2340-24-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2340-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2340-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2340-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2556-30-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2556-46-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2556-31-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2556-44-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2556-52-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2556-53-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2556-50-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2556-54-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB