Analysis

  • max time kernel
    140s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-10-2022 19:37

General

  • Target

    f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4.exe

  • Size

    664KB

  • MD5

    49b0e121df78300d5eeb36f2621e692d

  • SHA1

    0da151f1c4506e713441a2276f9e5b7f96ebf537

  • SHA256

    f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4

  • SHA512

    d06b55b2467ecfb5d66ecc5be1ff0d4ff264fa8b64db4548664a732b0a9c3e73051b0b57947c6a3d365880492248255a079e8a8d5610998592e57e1f37d20db0

  • SSDEEP

    12288:+IS+tTjfMUeF4r5ITpdyv3MW2OnwtbqawSCq8hBc82R+orWQLDSrcB9AbbxIHu48:+iCUY4rAGvcWPubqaMrn2R+oakSrk9At

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .adlg

  • offline_id

    z8lhl4oForVEc7gy9Ra8rSqjYMl3xiFRuIW4not1

  • payload_url

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

    http://winnlinne.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-g28rVcqA58 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: 0570Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

54.9

Botnet

517

C2

https://t.me/larsenup

https://ioc.exchange/@zebra54

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.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Program crash 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4.exe
    "C:\Users\Admin\AppData\Local\Temp\f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4024
    • C:\Users\Admin\AppData\Local\Temp\f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4.exe
      "C:\Users\Admin\AppData\Local\Temp\f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2280
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f3e4198c-f108-4df4-bad6-1bbb801e6fe5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3620
      • C:\Users\Admin\AppData\Local\Temp\f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4.exe
        "C:\Users\Admin\AppData\Local\Temp\f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3980
        • C:\Users\Admin\AppData\Local\Temp\f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4.exe
          "C:\Users\Admin\AppData\Local\Temp\f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:620
          • C:\Users\Admin\AppData\Local\2c1bfb9b-54e7-4472-a646-c225029b8b73\build2.exe
            "C:\Users\Admin\AppData\Local\2c1bfb9b-54e7-4472-a646-c225029b8b73\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1172
            • C:\Users\Admin\AppData\Local\2c1bfb9b-54e7-4472-a646-c225029b8b73\build2.exe
              "C:\Users\Admin\AppData\Local\2c1bfb9b-54e7-4472-a646-c225029b8b73\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:1652
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1652 -s 764
                7⤵
                • Program crash
                PID:4424
          • C:\Users\Admin\AppData\Local\2c1bfb9b-54e7-4472-a646-c225029b8b73\build3.exe
            "C:\Users\Admin\AppData\Local\2c1bfb9b-54e7-4472-a646-c225029b8b73\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4352
            • 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:3340
  • 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:1332
    • 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:1512
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1652 -ip 1652
    1⤵
      PID:3312

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\ProgramData\mozglue.dll

      Filesize

      593KB

      MD5

      c8fd9be83bc728cc04beffafc2907fe9

      SHA1

      95ab9f701e0024cedfbd312bcfe4e726744c4f2e

      SHA256

      ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

      SHA512

      fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

    • C:\ProgramData\nss3.dll

      Filesize

      2.0MB

      MD5

      1cc453cdf74f31e4d913ff9c10acdde2

      SHA1

      6e85eae544d6e965f15fa5c39700fa7202f3aafe

      SHA256

      ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

      SHA512

      dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

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

      Filesize

      2KB

      MD5

      596d2fdcebb9285d08c83e8c66f21dc9

      SHA1

      d634a64d292467c4fe9f1b2b80ac3bf82a08d49f

      SHA256

      0231bc4602667ff24bfa1caab1d56c225a54031c452c9de84b810be18628a3e3

      SHA512

      fd0399c36455095561381c33ba0f6f98496dc2fd63792f148ec9dfbc06ed6ad24a6bf9aa7f559dba7f257ccd145ee8532418606c2eb282a42ca678de4231d818

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

      Filesize

      1KB

      MD5

      b6f52795b677b4e2ad47736ffe3704a5

      SHA1

      945cb962aae5a0986c476650006227debf93b51c

      SHA256

      c8aff1f15506340e6abd76c8a8382e9caeba4fa8e8483254cf7ab9d22c2a57fe

      SHA512

      1e241b4c9bf53a97c980dd09bc73abcaf05ed8ccc641d5b0ad1eadc4502b4c1519b62d9c51f8e38c73898c2eca4a4a2e81777763731bf0f36dc5c04a30ae0450

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

      Filesize

      488B

      MD5

      9a280ceb03d711224a167226003dc58c

      SHA1

      ce5fcbc73ec36a993b6c6f5da006d7a2728d4fe2

      SHA256

      8d8ef8fe8e6b8a8481f8c2823e4a49b3ac5d8f1ded9ec9b050e2c8cf09d3ea48

      SHA512

      170fcbdb64059239a195bc4a1706d2cfd24218576207aabb69f67e487e21baab486c123eb27083bde6344c1af20b803c89ece63ad4b2452b7fd0c9e7b70fc8c1

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

      Filesize

      482B

      MD5

      25439ba0d1d726cada3109cc0f8f1ab5

      SHA1

      239f4ba2bca72f75f46b77ae5d37b25a17b94fe4

      SHA256

      844bb223cf7a97d46f7f26804159ad260412b2042217167acc56c3f022e06c00

      SHA512

      f60a1d0bbcbbf01e5984b1534253ca30c3acf52013aba5496d366b947d707106cc3212cb5c613be9366f1f73d5ddaf21e842b75d03a4b82774348e8ac529909c

    • C:\Users\Admin\AppData\Local\2c1bfb9b-54e7-4472-a646-c225029b8b73\build2.exe

      Filesize

      255KB

      MD5

      9c3d4324a153c6438f48083bc333a962

      SHA1

      033e80e2008f4f62d2716ce0473bb0d763d52277

      SHA256

      5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

      SHA512

      8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

    • C:\Users\Admin\AppData\Local\2c1bfb9b-54e7-4472-a646-c225029b8b73\build2.exe

      Filesize

      255KB

      MD5

      9c3d4324a153c6438f48083bc333a962

      SHA1

      033e80e2008f4f62d2716ce0473bb0d763d52277

      SHA256

      5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

      SHA512

      8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

    • C:\Users\Admin\AppData\Local\2c1bfb9b-54e7-4472-a646-c225029b8b73\build2.exe

      Filesize

      255KB

      MD5

      9c3d4324a153c6438f48083bc333a962

      SHA1

      033e80e2008f4f62d2716ce0473bb0d763d52277

      SHA256

      5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

      SHA512

      8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

    • C:\Users\Admin\AppData\Local\2c1bfb9b-54e7-4472-a646-c225029b8b73\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\2c1bfb9b-54e7-4472-a646-c225029b8b73\build3.exe

      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\f3e4198c-f108-4df4-bad6-1bbb801e6fe5\f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4.exe

      Filesize

      664KB

      MD5

      49b0e121df78300d5eeb36f2621e692d

      SHA1

      0da151f1c4506e713441a2276f9e5b7f96ebf537

      SHA256

      f3679a2671a17163bf5c630960d25285e0c483940eb7a95f5fe503f95383a8b4

      SHA512

      d06b55b2467ecfb5d66ecc5be1ff0d4ff264fa8b64db4548664a732b0a9c3e73051b0b57947c6a3d365880492248255a079e8a8d5610998592e57e1f37d20db0

    • 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

    • memory/620-152-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/620-145-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/620-147-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/620-188-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/1172-164-0x00000000007FC000-0x0000000000828000-memory.dmp

      Filesize

      176KB

    • memory/1172-166-0x0000000000730000-0x000000000077A000-memory.dmp

      Filesize

      296KB

    • memory/1652-165-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/1652-168-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/1652-167-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/1652-193-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/1652-161-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/1652-192-0x0000000000400000-0x000000000045E000-memory.dmp

      Filesize

      376KB

    • memory/2280-138-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2280-142-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2280-136-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2280-133-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/2280-134-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3980-146-0x0000000002254000-0x00000000022E6000-memory.dmp

      Filesize

      584KB

    • memory/4024-135-0x0000000002345000-0x00000000023D7000-memory.dmp

      Filesize

      584KB

    • memory/4024-137-0x00000000024D0000-0x00000000025EB000-memory.dmp

      Filesize

      1.1MB