Analysis

  • max time kernel
    135s
  • max time network
    137s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    23-05-2022 00:26

General

  • Target

    fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713.exe

  • Size

    800KB

  • MD5

    71d8e57a46495cac6a0cc52a39356bb4

  • SHA1

    00231a52f006ae4d74c9113c6f45c454a82acb11

  • SHA256

    fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713

  • SHA512

    6ccdc4abf8db6c54711f581f2dcbac55be041be415a2d54902b90bdd83f4d87ae757294dd6ed1042de5d4893b066696520c8e5a2678bd56ec8f0fda93c58458d

Malware Config

Extracted

Family

djvu

C2

http://ugll.org/fhsgtsspen6/get.php

Attributes
  • extension

    .fdcv

  • offline_id

    eBNgvyGQV1Hmt9DBdxVRs8qPi1agsS7OaohPmit1

  • payload_url

    http://zerit.top/dl/build2.exe

    http://ugll.org/files/1/build3.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-j3AdKrnQie 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: admin@helpdata.top Reserve e-mail address to contact us: supportsys@airmail.cc Your personal ID: 0483JIjdm

rsa_pubkey.plain

Extracted

Family

vidar

Version

52.1

Botnet

517

C2

https://t.me/verstappenf1r

https://climatejustice.social/@ronxik312

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 10 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

  • suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

    suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

  • suricata: ET MALWARE Win32/Filecoder.STOP Variant Public Key Download

    suricata: ET MALWARE Win32/Filecoder.STOP Variant Public Key Download

  • suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

    suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

  • suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

    suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

  • Vidar Stealer 5 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • 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.

  • 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713.exe
    "C:\Users\Admin\AppData\Local\Temp\fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4316
    • C:\Users\Admin\AppData\Local\Temp\fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713.exe
      "C:\Users\Admin\AppData\Local\Temp\fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2364
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f186716b-a9d8-4e08-b9cf-f7192ff85bce" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2144
      • C:\Users\Admin\AppData\Local\Temp\fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713.exe
        "C:\Users\Admin\AppData\Local\Temp\fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4800
        • C:\Users\Admin\AppData\Local\Temp\fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713.exe
          "C:\Users\Admin\AppData\Local\Temp\fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:5100
          • C:\Users\Admin\AppData\Local\89253de2-98ea-4163-a6d6-a8056b7a2ba9\build2.exe
            "C:\Users\Admin\AppData\Local\89253de2-98ea-4163-a6d6-a8056b7a2ba9\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:948
            • C:\Users\Admin\AppData\Local\89253de2-98ea-4163-a6d6-a8056b7a2ba9\build2.exe
              "C:\Users\Admin\AppData\Local\89253de2-98ea-4163-a6d6-a8056b7a2ba9\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:2356

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
    Filesize

    727B

    MD5

    263d12469947e2539c2a2a04bb056345

    SHA1

    a63fd9efc397db4cc1a82cf89b7fc8e0f6694d39

    SHA256

    102af65a56e5cea616b871487be0aa8525e3258d514ca80d3a2918c3a4f23315

    SHA512

    571bd3d3ec72023ea4ec0861baeff535fc3e71716f2c08c3305f25d615448b13a4d4bc0f7d05c500f523ad13e6ba3c2e2549891c63cc170b7f1743bc8a148df1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
    Filesize

    471B

    MD5

    1670ab0904b0779e9046a6c0ae0ccf8b

    SHA1

    0030369be3da0ef23ac809d8963fdeb76de17eeb

    SHA256

    34a5f72509ddfed75552cbb5007e460c9c9f6dc6c511b12e32083b1a9c030ba5

    SHA512

    e0cf63ec3f97979c2ad1318954f2daecc3639c3112548796ba8996eb119443a4bca933e1353f1dfd4068de7925ef765a3a9f4f5591702c5876b9a46246415e7e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
    Filesize

    402B

    MD5

    3f2fea051e4089154618840138ece3b3

    SHA1

    dde0cc784ad9733b1c0e41a848bc330113a1c099

    SHA256

    ae80117f7921c3fa3356e42d96f0461e1747a1adb546ee68d89a696a5d1e141b

    SHA512

    216ec7481ffcc1c97015cfd5553b53231a1773296feb8c373b26fa535d72e383483568c84d6bea8e115f13f70e5ced625c8b39ffa6afa27929c9b5df9f679f8c

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
    Filesize

    396B

    MD5

    07fc34cead2548ad262730add490483f

    SHA1

    7246aef691b5131d994444c36581a379a645839d

    SHA256

    8b351736f44376500d3aecdcf41ad57ee2418f342a4e8541b7d74758a6abb64d

    SHA512

    d8b7896d07dd7be0f0d6ea3183ca086aa6090ceae9406029a0a9758fec668e66482b91ad6170bad5767d8a31c8fa52f494dc590506ea6dc55363394acbcf2563

  • C:\Users\Admin\AppData\Local\89253de2-98ea-4163-a6d6-a8056b7a2ba9\build2.exe
    Filesize

    367KB

    MD5

    3107999f9600f5f2bc88e17282da2773

    SHA1

    8862f9551fdb7dc30e135c556751b973f441e7b4

    SHA256

    aacab9cbbf292403a63bcfd1f6f0a9e534ac39aab406f2c9d7aa98b719f3801f

    SHA512

    50c66565fc457b848014eaf70b3f7cc408e8a818bd29c80daf53597a44c182d26649c249a6e3fe7e6516fc7ff7e7026f3aff4b25ee48645789fa6cd3d3e2f338

  • C:\Users\Admin\AppData\Local\89253de2-98ea-4163-a6d6-a8056b7a2ba9\build2.exe
    Filesize

    367KB

    MD5

    3107999f9600f5f2bc88e17282da2773

    SHA1

    8862f9551fdb7dc30e135c556751b973f441e7b4

    SHA256

    aacab9cbbf292403a63bcfd1f6f0a9e534ac39aab406f2c9d7aa98b719f3801f

    SHA512

    50c66565fc457b848014eaf70b3f7cc408e8a818bd29c80daf53597a44c182d26649c249a6e3fe7e6516fc7ff7e7026f3aff4b25ee48645789fa6cd3d3e2f338

  • C:\Users\Admin\AppData\Local\89253de2-98ea-4163-a6d6-a8056b7a2ba9\build2.exe
    Filesize

    367KB

    MD5

    3107999f9600f5f2bc88e17282da2773

    SHA1

    8862f9551fdb7dc30e135c556751b973f441e7b4

    SHA256

    aacab9cbbf292403a63bcfd1f6f0a9e534ac39aab406f2c9d7aa98b719f3801f

    SHA512

    50c66565fc457b848014eaf70b3f7cc408e8a818bd29c80daf53597a44c182d26649c249a6e3fe7e6516fc7ff7e7026f3aff4b25ee48645789fa6cd3d3e2f338

  • C:\Users\Admin\AppData\Local\f186716b-a9d8-4e08-b9cf-f7192ff85bce\fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713.exe
    Filesize

    800KB

    MD5

    71d8e57a46495cac6a0cc52a39356bb4

    SHA1

    00231a52f006ae4d74c9113c6f45c454a82acb11

    SHA256

    fb73d9f8b20c381d2003012f1de607ab300d4a0a82e558684dc3c026b0059713

    SHA512

    6ccdc4abf8db6c54711f581f2dcbac55be041be415a2d54902b90bdd83f4d87ae757294dd6ed1042de5d4893b066696520c8e5a2678bd56ec8f0fda93c58458d

  • \ProgramData\mozglue.dll
    Filesize

    133KB

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll
    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • memory/948-134-0x0000000000000000-mapping.dmp
  • memory/2144-121-0x0000000000000000-mapping.dmp
  • memory/2356-138-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2356-144-0x0000000060900000-0x0000000060992000-memory.dmp
    Filesize

    584KB

  • memory/2356-143-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2356-142-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2356-141-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2356-139-0x000000000042103C-mapping.dmp
  • memory/2364-117-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2364-119-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2364-115-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2364-120-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2364-116-0x0000000000424141-mapping.dmp
  • memory/4316-118-0x0000000002220000-0x000000000233B000-memory.dmp
    Filesize

    1.1MB

  • memory/4800-123-0x0000000000000000-mapping.dmp
  • memory/5100-133-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/5100-128-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/5100-127-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/5100-126-0x0000000000424141-mapping.dmp