Analysis

  • max time kernel
    144s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-08-2024 02:58

General

  • Target

    b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe

  • Size

    801KB

  • MD5

    04e42207db45792cae0f6d3fd83f0680

  • SHA1

    cb17f3a1bb57541204afd27313b390e5ead5096c

  • SHA256

    b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9

  • SHA512

    b81da4e8961bc8c25e6832db5c1227cb253e178e6c5a4db0725ed073639d944b8d8012865ace42b2781b3f09b082e44a8a19c2ee326a173acb8757caebacbbf7

  • SSDEEP

    24576:7oL6YwH+hUfoA5snjj0ZvgCxwaEbNHzy9XSm3XNEGQnA:cL6Yw2UfoOoEwaONQXHNEGe

Malware Config

Extracted

Family

djvu

C2

http://asvb.top/nddddhsspen6/get.php

Attributes
  • extension

    .pcqq

  • offline_id

    3pNdLH1399769YerBBKCxHURRAqLhaXsGw3Fbkt1

  • payload_url

    http://asvb.top/files/penelop/updatewin1.exe

    http://asvb.top/files/penelop/updatewin2.exe

    http://asvb.top/files/penelop/updatewin.exe

    http://asvb.top/files/penelop/3.exe

    http://asvb.top/files/penelop/4.exe

    http://asvb.top/files/penelop/5.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-TVrnNufMGq 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: 0296Sirj

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 14 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • 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 4 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
    "C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2616
    • C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
      "C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2024
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\28802b60-6706-49f7-9f50-a928027b80da" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:3296
      • C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
        "C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4972
        • C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
          "C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:4668
  • C:\Users\Admin\AppData\Local\28802b60-6706-49f7-9f50-a928027b80da\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
    C:\Users\Admin\AppData\Local\28802b60-6706-49f7-9f50-a928027b80da\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe --Task
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3428
    • C:\Users\Admin\AppData\Local\28802b60-6706-49f7-9f50-a928027b80da\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
      C:\Users\Admin\AppData\Local\28802b60-6706-49f7-9f50-a928027b80da\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe --Task
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:3544

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

    3b361c8bd01f16c2551c229e7f3e6760

    SHA1

    7e4b09c280c3138f62a536f7af74c3f4bc7dca20

    SHA256

    43a976e473383b3f1cad6b93075eb8cb1f5a5f00e1c23810af03442a8aa8eafb

    SHA512

    4ecce0588cdecd988a76e16f4e52c392b65ac96ebdb5bf56ff3402202956021a46378f6e584fa22b35cd4054b868c519d88988b0a9f8ddbd2452a5abcca360e9

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

    Filesize

    170B

    MD5

    667d74821edd1bc7e10f9d82a06bfc3e

    SHA1

    18047462c1aac3e70a92f0bef1d397997fb1bfa2

    SHA256

    3089b98b412660c00a298e32330a8d213bc45349327cbe13a0bc1d10dd953245

    SHA512

    46122c4608cea47c290b0f3de30c479dda6ab6e6365f2c6748512f7e0746bfef193420d9eb6e94e3842af514be95b4788148709c1bcbe85ebc641923c333f52e

  • C:\Users\Admin\AppData\Local\28802b60-6706-49f7-9f50-a928027b80da\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe

    Filesize

    801KB

    MD5

    04e42207db45792cae0f6d3fd83f0680

    SHA1

    cb17f3a1bb57541204afd27313b390e5ead5096c

    SHA256

    b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9

    SHA512

    b81da4e8961bc8c25e6832db5c1227cb253e178e6c5a4db0725ed073639d944b8d8012865ace42b2781b3f09b082e44a8a19c2ee326a173acb8757caebacbbf7

  • memory/2024-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2616-1-0x0000000002160000-0x00000000021FC000-memory.dmp

    Filesize

    624KB

  • memory/2616-2-0x00000000022F0000-0x000000000240B000-memory.dmp

    Filesize

    1.1MB

  • memory/3544-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3544-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4668-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4668-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4668-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4668-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4668-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4668-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4972-26-0x0000000000400000-0x00000000004D9000-memory.dmp

    Filesize

    868KB

  • memory/4972-21-0x0000000000400000-0x00000000004D9000-memory.dmp

    Filesize

    868KB