Analysis

  • max time kernel
    145s
  • max time network
    139s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    25-03-2023 05:03

General

  • Target

    7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6.exe

  • Size

    785KB

  • MD5

    616936879e261be192e4e21c12dadb97

  • SHA1

    1145e93f5cb8f5d897a5d89ddba6985af5460c47

  • SHA256

    7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6

  • SHA512

    f8d50e53cfabf6ffb1642e1828a21e6e69ad16e6344ae08b653955ea87d96d9bbea48c83aed35f65e6bf694e285837e3a7bb7debef840f4d7934f89615ceacf5

  • SSDEEP

    12288:F0oSCY0pTr86MgB+gZj1Mr1HY2AnY7MgvArsqcD7yb3GgIjkzNXDj3Mm5wY+m7s:Fa0pTr5LdpSxY2ADnrzYGDQ2bMm5w

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test2/get.php

Attributes
  • extension

    .tywd

  • offline_id

    Yao2o6f5vNghOpgVBhEIA8O96SC5vLcgITgaRMt1

  • payload_url

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

    http://zexeq.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-f8UEvx4T0A 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: 0671IsjO

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.1

Botnet

00d92484c9b27bc8482a2cc94cacc508

C2

https://steamcommunity.com/profiles/76561199472266392

https://t.me/tabootalks

http://135.181.26.183:80

Attributes
  • profile_id_v2

    00d92484c9b27bc8482a2cc94cacc508

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79

Signatures

  • Detected Djvu ransomware 16 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 4 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.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6.exe
    "C:\Users\Admin\AppData\Local\Temp\7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4148
    • C:\Users\Admin\AppData\Local\Temp\7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6.exe
      "C:\Users\Admin\AppData\Local\Temp\7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3644
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\485a61a6-e3b3-4ebb-9e18-a1d8b9022d64" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4840
      • C:\Users\Admin\AppData\Local\Temp\7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6.exe
        "C:\Users\Admin\AppData\Local\Temp\7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1396
        • C:\Users\Admin\AppData\Local\Temp\7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6.exe
          "C:\Users\Admin\AppData\Local\Temp\7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2616
          • C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build2.exe
            "C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3964
            • C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build2.exe
              "C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4008
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:756
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:760
          • C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build3.exe
            "C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4724
            • C:\Windows\SysWOW64\schtasks.exe
              /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
              6⤵
              • Creates scheduled task(s)
              PID:60
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4380
    • C:\Windows\SysWOW64\schtasks.exe
      /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
      2⤵
      • Creates scheduled task(s)
      PID:4868

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    2KB

    MD5

    ebf38835fd83d603ed2939112fe923d2

    SHA1

    27426896cf1aac5c41eff28eae202b44d92345f9

    SHA256

    1b703c5ef0e6349372108f3a7a2033a365e50a17e8d7cd278f93e4444f232b71

    SHA512

    7d4d060f679ba65f601e5e7d9bee51bec4bd801bb3440a5c1f856cfa643ccca152a670e38d1e458d419e5f41ee422d5f37029035e58c2e8e9ec9e0339c680a0d

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

    Filesize

    1KB

    MD5

    e23d8cd61c2e75283867a91ce42aa1dc

    SHA1

    a86f54bb4f00cf0fcd3efc3951d54e168d25c7f4

    SHA256

    0a8b65baa91fb423458dd64e067a6009cd4ce9a93c65ac4b448025403ab0ea9c

    SHA512

    89483da80407e373d6d0f18b4ddd3976a5cd8e590b398de51e881623f54e4c146ec57def18c26c8f7ca5e7ed00b51b9a94d14ad38d2d716b416507b41144c5f4

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

    Filesize

    488B

    MD5

    e4cf14b27e17d39d5527193e62928c70

    SHA1

    9732b56e3d6cd7ff21f3d09725179ab87f2e6887

    SHA256

    815131f61cbeeea908b23f77059ad6783b4ba6cd601db574212369e0816dc844

    SHA512

    bc9850db830262827781b60c5c63a7f227e6737bc8f2183bf93b940783bf49876a609f94d97b305b70ff85000c000a9720f61f2432d6bb2ae30d4e7bec4c4e0b

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

    Filesize

    482B

    MD5

    19be178ff7d2637d473093a00ef3e276

    SHA1

    fa145baf2f76102902e47d4beb92bbd9c622217b

    SHA256

    9cc9c347222a224addbb107d35a0e10511bb2e01fa77bb247622e5d0e4b544f9

    SHA512

    57dc524aa7300bf9d63e7867edaecd387cb5b0776c2c51afeace24a7861c32d2aee00135ca0151fa04a88fe3d6da5259a4865ef6216ef0a45bbe1e002649f6b9

  • C:\Users\Admin\AppData\Local\485a61a6-e3b3-4ebb-9e18-a1d8b9022d64\7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6.exe

    Filesize

    785KB

    MD5

    616936879e261be192e4e21c12dadb97

    SHA1

    1145e93f5cb8f5d897a5d89ddba6985af5460c47

    SHA256

    7bc97f2c65956e90a57433391697ed80a1ca6e1fc39e0fc311168a78e86b1cd6

    SHA512

    f8d50e53cfabf6ffb1642e1828a21e6e69ad16e6344ae08b653955ea87d96d9bbea48c83aed35f65e6bf694e285837e3a7bb7debef840f4d7934f89615ceacf5

  • C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build2.exe

    Filesize

    299KB

    MD5

    6b343cd7dea3ae28d0819bc55a2f86fe

    SHA1

    cedd49849a5dd678d0a55da607e9b28a9680073c

    SHA256

    4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49

    SHA512

    7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48

  • C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build2.exe

    Filesize

    299KB

    MD5

    6b343cd7dea3ae28d0819bc55a2f86fe

    SHA1

    cedd49849a5dd678d0a55da607e9b28a9680073c

    SHA256

    4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49

    SHA512

    7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48

  • C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build2.exe

    Filesize

    299KB

    MD5

    6b343cd7dea3ae28d0819bc55a2f86fe

    SHA1

    cedd49849a5dd678d0a55da607e9b28a9680073c

    SHA256

    4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49

    SHA512

    7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48

  • C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\e21ed3d8-2370-4f7c-bdd8-ef53f6d61a05\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • \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/2616-144-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2616-151-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2616-173-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2616-150-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2616-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2616-143-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2616-159-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2616-148-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2616-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2616-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3644-118-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3644-132-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3644-120-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3644-117-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3644-121-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-164-0x0000000000620000-0x0000000000677000-memory.dmp

    Filesize

    348KB

  • memory/4008-161-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4008-186-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/4008-170-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4008-163-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4008-231-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4008-165-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4008-244-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4008-245-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4008-246-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4008-247-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4148-119-0x0000000004AD0000-0x0000000004BEB000-memory.dmp

    Filesize

    1.1MB