Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    03-05-2022 06:39

General

  • Target

    f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49.exe

  • Size

    796KB

  • MD5

    9da821e4f0a7bb7d26008c058b4e00ad

  • SHA1

    fee0cd81279bfd1a2d75fa783dc43ae6014ab076

  • SHA256

    f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49

  • SHA512

    c753b1cc503cea03c2e12eb96f9a2d9321296702b61de29e0e41f0d900d16f872c34a9556eb9a3f54492eabfe0bd12fbc6271f8fcfbeb37d03d7ab0602334a87

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .mmob

  • offline_id

    w6IKbZ9nGWp1wM5W7MK8obmynSc0Hx2FVdvsSzt1

  • payload_url

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

    http://fuyt.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-PRDjRCeB3y 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: manager@time2mail.ch Reserve e-mail address to contact us: supportsys@airmail.cc Your personal ID: 0468JIjdm

rsa_pubkey.plain

Extracted

Family

vidar

Version

51.8

Botnet

517

C2

https://t.me/mm20220428

https://koyu.space/@ronxik123

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 2 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 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49.exe
    "C:\Users\Admin\AppData\Local\Temp\f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4464
    • C:\Users\Admin\AppData\Local\Temp\f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49.exe
      "C:\Users\Admin\AppData\Local\Temp\f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1580
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\b7b8ec8a-2907-4d35-8a5c-8895e2428ce1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2180
      • C:\Users\Admin\AppData\Local\Temp\f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49.exe
        "C:\Users\Admin\AppData\Local\Temp\f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2428
        • C:\Users\Admin\AppData\Local\Temp\f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49.exe
          "C:\Users\Admin\AppData\Local\Temp\f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4796
          • C:\Users\Admin\AppData\Local\a2f3b297-ea17-42a9-82c7-aa787f723cbb\build2.exe
            "C:\Users\Admin\AppData\Local\a2f3b297-ea17-42a9-82c7-aa787f723cbb\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1400
            • C:\Users\Admin\AppData\Local\a2f3b297-ea17-42a9-82c7-aa787f723cbb\build2.exe
              "C:\Users\Admin\AppData\Local\a2f3b297-ea17-42a9-82c7-aa787f723cbb\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Modifies system certificate store
              • Suspicious behavior: EnumeratesProcesses
              PID:3476

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\Local\a2f3b297-ea17-42a9-82c7-aa787f723cbb\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\a2f3b297-ea17-42a9-82c7-aa787f723cbb\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\a2f3b297-ea17-42a9-82c7-aa787f723cbb\build2.exe
    Filesize

    368KB

    MD5

    ad1b502b6714c0a374b055332018974b

    SHA1

    672f4e44475177ddcb1bfa73db3c5dee0f031bc2

    SHA256

    f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95

    SHA512

    0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e

  • C:\Users\Admin\AppData\Local\b7b8ec8a-2907-4d35-8a5c-8895e2428ce1\f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49.exe
    Filesize

    796KB

    MD5

    9da821e4f0a7bb7d26008c058b4e00ad

    SHA1

    fee0cd81279bfd1a2d75fa783dc43ae6014ab076

    SHA256

    f0debfbca0827d4284853d7f4dd1ff8562d0d2663be0b38f08fe8bb96b028b49

    SHA512

    c753b1cc503cea03c2e12eb96f9a2d9321296702b61de29e0e41f0d900d16f872c34a9556eb9a3f54492eabfe0bd12fbc6271f8fcfbeb37d03d7ab0602334a87

  • \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/1400-133-0x0000000000000000-mapping.dmp
  • memory/1400-140-0x00000000006B6000-0x00000000006E1000-memory.dmp
    Filesize

    172KB

  • memory/1400-142-0x00000000004F0000-0x0000000000539000-memory.dmp
    Filesize

    292KB

  • memory/1580-122-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1580-123-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1580-118-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1580-120-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1580-119-0x0000000000424141-mapping.dmp
  • memory/2180-124-0x0000000000000000-mapping.dmp
  • memory/2428-126-0x0000000000000000-mapping.dmp
  • memory/3476-139-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/3476-137-0x000000000042118A-mapping.dmp
  • memory/3476-136-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/3476-141-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/3476-143-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/3476-144-0x0000000060900000-0x0000000060992000-memory.dmp
    Filesize

    584KB

  • memory/4464-121-0x0000000002360000-0x000000000247B000-memory.dmp
    Filesize

    1.1MB

  • memory/4796-132-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4796-131-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4796-130-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4796-129-0x0000000000424141-mapping.dmp