Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    18-05-2022 04:44

General

  • Target

    37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e.exe

  • Size

    849KB

  • MD5

    665894a608494cdee5266c4dae85650d

  • SHA1

    880756df73b6a13d79108acc129087a513dd706f

  • SHA256

    37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e

  • SHA512

    57b4271f389bccc3c1097a5e52c95ecd48efe038a66d933429067be29fab68c2a761c4d08ce5b7fcf1414d2bab5540439e780d9093832bc1067093d7e289a1ba

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .dfwe

  • 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: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0480JIjdm

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 6 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\37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e.exe
    "C:\Users\Admin\AppData\Local\Temp\37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3212
    • C:\Users\Admin\AppData\Local\Temp\37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e.exe
      "C:\Users\Admin\AppData\Local\Temp\37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:68
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\2824f066-456e-47d5-bc71-d4a5664c5896" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4016
      • C:\Users\Admin\AppData\Local\Temp\37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e.exe
        "C:\Users\Admin\AppData\Local\Temp\37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:776
        • C:\Users\Admin\AppData\Local\Temp\37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e.exe
          "C:\Users\Admin\AppData\Local\Temp\37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2108
          • C:\Users\Admin\AppData\Local\2f617633-e0d1-48f6-8d59-bfb9d62119c6\build2.exe
            "C:\Users\Admin\AppData\Local\2f617633-e0d1-48f6-8d59-bfb9d62119c6\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3832
            • C:\Users\Admin\AppData\Local\2f617633-e0d1-48f6-8d59-bfb9d62119c6\build2.exe
              "C:\Users\Admin\AppData\Local\2f617633-e0d1-48f6-8d59-bfb9d62119c6\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:1992

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

    8ae6f45bb6c9f288a96a3402dc17e2d9

    SHA1

    9ddb0d782cb4728675a1f5b61cfc632997349cdf

    SHA256

    ae4681e5db7de9744bdd78a943d6be6a390aa925125935d6cb691a27c8b2ebd3

    SHA512

    ee94f18f21437c1fba42cca69d535997c89438801ea6e823e99d384e9bc0239b041dc5ed854063a571bac2bbd2f83d7113c7f456d130b15e7db847e7fe4e8ec7

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

    471B

    MD5

    b1c4234d2346ca5a2267de9f0bab4b81

    SHA1

    d6d10976b258ee86430063fdfb1838bb73838aeb

    SHA256

    e75d5e79323e42e337cf188a296db211f5d7dd488d03adf4b1be7836f997e3ed

    SHA512

    8b1d4c34ad847b73d060cb35dba350032be0a8cd82637a5c52805c078ea986ea44446040f588fb4edda4a233e424bdb6dc3ba016b7647936ec4ef4f971ff1e17

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

    402B

    MD5

    469953643def7a037af476c9cc512568

    SHA1

    2e99721de4dbb2c92a68acf88d60e3f0fcb13da5

    SHA256

    d8fbc482a553a30e45c07cc8cd241e5bbc3643c087cdffd15af9d9a176691823

    SHA512

    103480489f04132b115e6efeee3721306c164c57fab7f45e9efd67966827f8291d17afc4648c1ab62811a77884120d88253e152dda9d32cde86471f5886a4247

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

    396B

    MD5

    575c30187a4d05f48bb8a77de0b84a53

    SHA1

    51b10618f313822052a3f88ab94c3ded0a0d0d76

    SHA256

    6123f1f38ba3ccf1e1d678dff87eedbb0b73eb0af708ebcee35a2f68df508410

    SHA512

    7b7adbec477657917268464b91585e41292f84a2c3466270e177080cf32f9a1a180896c516ea9955f586787deca7fdf9fefa28f15fca2148ff28a3a12395da27

  • C:\Users\Admin\AppData\Local\2824f066-456e-47d5-bc71-d4a5664c5896\37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e.exe
    Filesize

    849KB

    MD5

    665894a608494cdee5266c4dae85650d

    SHA1

    880756df73b6a13d79108acc129087a513dd706f

    SHA256

    37bb4aeb781a267e7418f5c64ff682ea6243c0aa32219c02065578e544aca81e

    SHA512

    57b4271f389bccc3c1097a5e52c95ecd48efe038a66d933429067be29fab68c2a761c4d08ce5b7fcf1414d2bab5540439e780d9093832bc1067093d7e289a1ba

  • C:\Users\Admin\AppData\Local\2f617633-e0d1-48f6-8d59-bfb9d62119c6\build2.exe
    Filesize

    367KB

    MD5

    3107999f9600f5f2bc88e17282da2773

    SHA1

    8862f9551fdb7dc30e135c556751b973f441e7b4

    SHA256

    aacab9cbbf292403a63bcfd1f6f0a9e534ac39aab406f2c9d7aa98b719f3801f

    SHA512

    50c66565fc457b848014eaf70b3f7cc408e8a818bd29c80daf53597a44c182d26649c249a6e3fe7e6516fc7ff7e7026f3aff4b25ee48645789fa6cd3d3e2f338

  • C:\Users\Admin\AppData\Local\2f617633-e0d1-48f6-8d59-bfb9d62119c6\build2.exe
    Filesize

    367KB

    MD5

    3107999f9600f5f2bc88e17282da2773

    SHA1

    8862f9551fdb7dc30e135c556751b973f441e7b4

    SHA256

    aacab9cbbf292403a63bcfd1f6f0a9e534ac39aab406f2c9d7aa98b719f3801f

    SHA512

    50c66565fc457b848014eaf70b3f7cc408e8a818bd29c80daf53597a44c182d26649c249a6e3fe7e6516fc7ff7e7026f3aff4b25ee48645789fa6cd3d3e2f338

  • C:\Users\Admin\AppData\Local\2f617633-e0d1-48f6-8d59-bfb9d62119c6\build2.exe
    Filesize

    367KB

    MD5

    3107999f9600f5f2bc88e17282da2773

    SHA1

    8862f9551fdb7dc30e135c556751b973f441e7b4

    SHA256

    aacab9cbbf292403a63bcfd1f6f0a9e534ac39aab406f2c9d7aa98b719f3801f

    SHA512

    50c66565fc457b848014eaf70b3f7cc408e8a818bd29c80daf53597a44c182d26649c249a6e3fe7e6516fc7ff7e7026f3aff4b25ee48645789fa6cd3d3e2f338

  • \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/68-118-0x0000000000424141-mapping.dmp
  • memory/68-117-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/68-122-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/68-121-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/68-119-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/776-125-0x0000000000000000-mapping.dmp
  • memory/1992-139-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1992-145-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1992-140-0x000000000042103C-mapping.dmp
  • memory/1992-147-0x0000000060900000-0x0000000060992000-memory.dmp
    Filesize

    584KB

  • memory/1992-144-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/1992-146-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2108-130-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2108-128-0x0000000000424141-mapping.dmp
  • memory/2108-131-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2108-129-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/3212-116-0x0000000002D86000-0x0000000002E18000-memory.dmp
    Filesize

    584KB

  • memory/3212-120-0x0000000004AD0000-0x0000000004BEB000-memory.dmp
    Filesize

    1.1MB

  • memory/3832-141-0x00000000006A3000-0x00000000006CD000-memory.dmp
    Filesize

    168KB

  • memory/3832-143-0x0000000002130000-0x0000000002179000-memory.dmp
    Filesize

    292KB

  • memory/3832-136-0x0000000000000000-mapping.dmp
  • memory/4016-123-0x0000000000000000-mapping.dmp