Analysis

  • max time kernel
    71s
  • max time network
    133s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    03-02-2023 08:23

General

  • Target

    c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1.exe

  • Size

    794KB

  • MD5

    94299ea2cfd6cf8acc8a8c8d7edc7ada

  • SHA1

    4f320731b2dbb2539363f008408c04a26c81a3c1

  • SHA256

    c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1

  • SHA512

    32c16e8fddae30b66902c39b4f657592f24a8e419db0ecdd4cc52a2184f06c6872cf567f1a833b7724f6b3f51f50b5f5e3bfdf3ca50aa0a3d708b0d5a056f56e

  • SSDEEP

    12288:hT3vXG2YzOO+1a49Ba054sb4qUjl2kELVSs42ANDvp3FP6OjP4P1Oyh:hju2DOma4PakkEF42ANVV6OjP49T

Malware Config

Extracted

Family

djvu

C2

http://drampik.com/test1/get.php

Attributes
  • extension

    .erqw

  • offline_id

    xVB7l5LcUtDGyghMgGsTvebrKc0RGgDXlN1BoKt1

  • payload_url

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

    http://drampik.com/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-8pCGyFnOj6 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: 0639JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

2.3

Botnet

19

C2

https://t.me/mantarlars

https://steamcommunity.com/profiles/76561199474840123

Attributes
  • profile_id

    19

Signatures

  • Detected Djvu ransomware 9 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1.exe
    "C:\Users\Admin\AppData\Local\Temp\c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2456
    • C:\Users\Admin\AppData\Local\Temp\c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1.exe
      "C:\Users\Admin\AppData\Local\Temp\c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2992
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\d44036ef-17e8-4568-a539-db6f20ea049a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2596
      • C:\Users\Admin\AppData\Local\Temp\c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1.exe
        "C:\Users\Admin\AppData\Local\Temp\c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1600
        • C:\Users\Admin\AppData\Local\Temp\c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1.exe
          "C:\Users\Admin\AppData\Local\Temp\c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3876
          • C:\Users\Admin\AppData\Local\b1357dac-cd69-47f2-b608-802a936ede14\build2.exe
            "C:\Users\Admin\AppData\Local\b1357dac-cd69-47f2-b608-802a936ede14\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4932
            • C:\Users\Admin\AppData\Local\b1357dac-cd69-47f2-b608-802a936ede14\build2.exe
              "C:\Users\Admin\AppData\Local\b1357dac-cd69-47f2-b608-802a936ede14\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4844
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\b1357dac-cd69-47f2-b608-802a936ede14\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:2464
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:3088

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2KB

    MD5

    9e7d80e73e3a4b89ac438893d100967f

    SHA1

    442541c67c4ba20543b28aad7d3b42f17019f283

    SHA256

    edb2d84b7720677e78684a5af4c1c79d25b1f5146c9557d6ec552467adf6a6c5

    SHA512

    8fda4a7061726ddd43f48ec041d951e57cf97cdf85af23fe1c32add5e6f4a80a94724680d8fcac11ce70bf7c2f11214dc15e54ba3b19cd2a59a264b24c6524df

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

    Filesize

    1KB

    MD5

    5b9ae1f8cf545e81c24ca6fc67cbe6b2

    SHA1

    fe01128033688d9e9745f32714d084b7a8b15f88

    SHA256

    fa0576b46c519e6e72adadbd32aa53e1c6f044e5466da4fe643496a362bf72fd

    SHA512

    c249eeef9a2002db49ba196797fd0b63a4afc0312b2857cdeef9a8ea2f3f0ba621334dbe4b8356c7cb58ff537fe2f3d9eb5e1f671c8d620fdc02b086860917ae

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

    Filesize

    488B

    MD5

    82ade3d0be630ca3b451ccc545106568

    SHA1

    d449b4621057613052701c9cad852be008d4d844

    SHA256

    3a487f835f25f7655a7d9007ab16dcfabe253249ae5c6aa718d81e72138f77d4

    SHA512

    258b2ee3bfa4898a52780f39c70c66738a9011fe7eecad5fea0b9fd1c35ad351402b7760f4637297a61435f305e2e2854ae75f81a2293bf68e46a357d1c4c3a2

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

    Filesize

    482B

    MD5

    342e7dedfabdc0f5d0aae6edccafb9fe

    SHA1

    4688ef4427a5d163ba41dc27f5e77c9a3db6845f

    SHA256

    def715d48598e025f5bb0eeff3dfb028298a5da455a79a261aa6e535f0ca6691

    SHA512

    b8db5235e027c608b03e977b2cd7485b213c810d88f983c53d55def1ae094887e8d9cb61e52b234a766bd982df71d2c98a1ead699480933b944c5ad6749eceaf

  • C:\Users\Admin\AppData\Local\b1357dac-cd69-47f2-b608-802a936ede14\build2.exe

    Filesize

    299KB

    MD5

    cacd37281c5470cfc13e6db90942d371

    SHA1

    af9e1477a51858376bd113f8247b4f6ff1b94445

    SHA256

    fe8dd23da7d898858d6a280cd58d4ca332f958a4f9562bf8f364dc4340f9c34c

    SHA512

    cfe21519f4c55583c3c68592812dbfa1170279de5e20b3da6d49f66957e373288650bd8c1a6afcd6d70255356674579b40c1b75a7c154fcc705cc89056ff8d67

  • C:\Users\Admin\AppData\Local\b1357dac-cd69-47f2-b608-802a936ede14\build2.exe

    Filesize

    299KB

    MD5

    cacd37281c5470cfc13e6db90942d371

    SHA1

    af9e1477a51858376bd113f8247b4f6ff1b94445

    SHA256

    fe8dd23da7d898858d6a280cd58d4ca332f958a4f9562bf8f364dc4340f9c34c

    SHA512

    cfe21519f4c55583c3c68592812dbfa1170279de5e20b3da6d49f66957e373288650bd8c1a6afcd6d70255356674579b40c1b75a7c154fcc705cc89056ff8d67

  • C:\Users\Admin\AppData\Local\b1357dac-cd69-47f2-b608-802a936ede14\build2.exe

    Filesize

    299KB

    MD5

    cacd37281c5470cfc13e6db90942d371

    SHA1

    af9e1477a51858376bd113f8247b4f6ff1b94445

    SHA256

    fe8dd23da7d898858d6a280cd58d4ca332f958a4f9562bf8f364dc4340f9c34c

    SHA512

    cfe21519f4c55583c3c68592812dbfa1170279de5e20b3da6d49f66957e373288650bd8c1a6afcd6d70255356674579b40c1b75a7c154fcc705cc89056ff8d67

  • C:\Users\Admin\AppData\Local\d44036ef-17e8-4568-a539-db6f20ea049a\c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1.exe

    Filesize

    794KB

    MD5

    94299ea2cfd6cf8acc8a8c8d7edc7ada

    SHA1

    4f320731b2dbb2539363f008408c04a26c81a3c1

    SHA256

    c2c1ddff00178c09e0c8f3f1b2a4cd2adacc7ebb6854977f0c881eb9747297b1

    SHA512

    32c16e8fddae30b66902c39b4f657592f24a8e419db0ecdd4cc52a2184f06c6872cf567f1a833b7724f6b3f51f50b5f5e3bfdf3ca50aa0a3d708b0d5a056f56e

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/1600-243-0x0000000000000000-mapping.dmp

  • memory/2456-138-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-141-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-128-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-129-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-130-0x00000000006DD000-0x000000000076E000-memory.dmp

    Filesize

    580KB

  • memory/2456-131-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-132-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-133-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-134-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-135-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-136-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-137-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-115-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-139-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-140-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-127-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-142-0x00000000005C0000-0x000000000070A000-memory.dmp

    Filesize

    1.3MB

  • memory/2456-143-0x0000000002410000-0x000000000252B000-memory.dmp

    Filesize

    1.1MB

  • memory/2456-144-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-126-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-116-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-117-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-118-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-119-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-120-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-121-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-122-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-123-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-124-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2456-125-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2464-505-0x0000000000000000-mapping.dmp

  • memory/2596-217-0x0000000000000000-mapping.dmp

  • memory/2992-167-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-157-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-158-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-162-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-161-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-163-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-164-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-165-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-166-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-159-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-169-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-168-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-170-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-171-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-172-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-173-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-174-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-176-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-175-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-178-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-177-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-179-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-180-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-181-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-202-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-160-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-156-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-155-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-245-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-154-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-153-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2992-151-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-146-0x0000000000424141-mapping.dmp

  • memory/2992-147-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-150-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-149-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/2992-148-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3088-512-0x0000000000000000-mapping.dmp

  • memory/3876-346-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3876-497-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3876-272-0x0000000000424141-mapping.dmp

  • memory/4844-386-0x000000000043211C-mapping.dmp

  • memory/4844-427-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4844-507-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4932-381-0x0000000002E6A000-0x0000000002E9E000-memory.dmp

    Filesize

    208KB

  • memory/4932-382-0x00000000047F0000-0x000000000484D000-memory.dmp

    Filesize

    372KB

  • memory/4932-390-0x0000000002E6A000-0x0000000002E9E000-memory.dmp

    Filesize

    208KB

  • memory/4932-352-0x0000000000000000-mapping.dmp