Analysis

  • max time kernel
    145s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-10-2022 03:25

General

  • Target

    c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d.exe

  • Size

    665KB

  • MD5

    dac04bf5ad22b2b2fb80f236c89fcae8

  • SHA1

    6e53fd2cb1baca78fc3b020f1217b0fb327b21ba

  • SHA256

    c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d

  • SHA512

    16471ba806660740975b63d4430e545637f7b91620fe1d223fb5f5f5a6bae0ee73982558ebaa51e89a98db3ffbf4ab9038b68a49a97a4757bf75739bee2abedf

  • SSDEEP

    12288:TAgAcxO3QpVLFWqjc3X4DZX0jMv5fCCCdWrFsTDAJHv1JVlpQ1XTx3XaiioTh4z/:TOc/LEoIoC05VCdWxsExlp6TRXdiGhP6

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .adww

  • 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: support@bestyourmail.ch Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0573Jhyjd

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 2 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d.exe
    "C:\Users\Admin\AppData\Local\Temp\c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1940
    • C:\Users\Admin\AppData\Local\Temp\c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d.exe
      "C:\Users\Admin\AppData\Local\Temp\c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4160
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f1d39ce7-a28d-4a6b-ac31-611cafe0d38b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4688
      • C:\Users\Admin\AppData\Local\Temp\c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d.exe
        "C:\Users\Admin\AppData\Local\Temp\c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1708
        • C:\Users\Admin\AppData\Local\Temp\c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d.exe
          "C:\Users\Admin\AppData\Local\Temp\c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2100
          • C:\Users\Admin\AppData\Local\895797b0-7d59-4b2f-85b1-fa21708ce32a\build2.exe
            "C:\Users\Admin\AppData\Local\895797b0-7d59-4b2f-85b1-fa21708ce32a\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1732
            • C:\Users\Admin\AppData\Local\895797b0-7d59-4b2f-85b1-fa21708ce32a\build2.exe
              "C:\Users\Admin\AppData\Local\895797b0-7d59-4b2f-85b1-fa21708ce32a\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:1784

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

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

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

    dbd2ef00711b9e8a65a71435dac362a2

    SHA1

    befb6f2c27daebeef7bcd7ed80c9dc50241bf5b6

    SHA256

    5affc8e9407564299e0b7ce1953b921d33dab949c296198ce30781c952e6a047

    SHA512

    500c02a21467c0f04337258c07a1e5f71da3dbbe2105e8e63881fe064bd4ebac7db8347e5a8e554b384237961e3df35513ff14bdc4a409862ac1eca5c35bf378

  • 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

    0226dfbf75edd81a61e937945a7e7ffc

    SHA1

    770b8e38b9dc7bb1048195f3518748397f8738e3

    SHA256

    705f36ea729cf29bac402697ce037fea8d5e1e485709a51343807b0f0c500770

    SHA512

    ed316471b05a7dcde146dc6323e798cd41b70817024c26fddd43a3eccaa43459549d6ff5a141299b1f38d6017e11e7b53eb4f506f680c050146df53cb77ed247

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

    482B

    MD5

    2a1bab30cbd88d640217fe4e07b511a9

    SHA1

    0b9b812aebcbb5aba89a8093a7a98f52f0c7bf9c

    SHA256

    fc2d90a43b22423a9f42bf87ae105a3a3697348bbf4178b83aed8afec2b78c13

    SHA512

    8564781c67ce5b35fa45ef1cbbcda76f837f8b5f0ec052c25591b1e0e77d8af49c4f3bd02437572bcaee254663d64d2e8326db7a026ae0eb62cfc253bb35d9a3

  • C:\Users\Admin\AppData\Local\895797b0-7d59-4b2f-85b1-fa21708ce32a\build2.exe
    Filesize

    255KB

    MD5

    9c3d4324a153c6438f48083bc333a962

    SHA1

    033e80e2008f4f62d2716ce0473bb0d763d52277

    SHA256

    5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

    SHA512

    8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

  • C:\Users\Admin\AppData\Local\895797b0-7d59-4b2f-85b1-fa21708ce32a\build2.exe
    Filesize

    255KB

    MD5

    9c3d4324a153c6438f48083bc333a962

    SHA1

    033e80e2008f4f62d2716ce0473bb0d763d52277

    SHA256

    5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

    SHA512

    8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

  • C:\Users\Admin\AppData\Local\895797b0-7d59-4b2f-85b1-fa21708ce32a\build2.exe
    Filesize

    255KB

    MD5

    9c3d4324a153c6438f48083bc333a962

    SHA1

    033e80e2008f4f62d2716ce0473bb0d763d52277

    SHA256

    5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98

    SHA512

    8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd

  • C:\Users\Admin\AppData\Local\f1d39ce7-a28d-4a6b-ac31-611cafe0d38b\c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d.exe
    Filesize

    665KB

    MD5

    dac04bf5ad22b2b2fb80f236c89fcae8

    SHA1

    6e53fd2cb1baca78fc3b020f1217b0fb327b21ba

    SHA256

    c17059360aa2f67c89a347feb4306d055e3e56523ea431a1701490a005903d1d

    SHA512

    16471ba806660740975b63d4430e545637f7b91620fe1d223fb5f5f5a6bae0ee73982558ebaa51e89a98db3ffbf4ab9038b68a49a97a4757bf75739bee2abedf

  • memory/1708-147-0x000000000220A000-0x000000000229C000-memory.dmp
    Filesize

    584KB

  • memory/1708-142-0x0000000000000000-mapping.dmp
  • memory/1732-154-0x0000000000000000-mapping.dmp
  • memory/1732-163-0x0000000000640000-0x000000000068A000-memory.dmp
    Filesize

    296KB

  • memory/1732-162-0x00000000006DD000-0x0000000000708000-memory.dmp
    Filesize

    172KB

  • memory/1784-186-0x0000000000400000-0x000000000045E000-memory.dmp
    Filesize

    376KB

  • memory/1784-165-0x0000000061E00000-0x0000000061EF3000-memory.dmp
    Filesize

    972KB

  • memory/1784-164-0x0000000000400000-0x000000000045E000-memory.dmp
    Filesize

    376KB

  • memory/1784-161-0x0000000000400000-0x000000000045E000-memory.dmp
    Filesize

    376KB

  • memory/1784-158-0x0000000000400000-0x000000000045E000-memory.dmp
    Filesize

    376KB

  • memory/1784-157-0x0000000000000000-mapping.dmp
  • memory/1940-132-0x0000000002343000-0x00000000023D5000-memory.dmp
    Filesize

    584KB

  • memory/1940-138-0x00000000024C0000-0x00000000025DB000-memory.dmp
    Filesize

    1.1MB

  • memory/1940-136-0x0000000002343000-0x00000000023D5000-memory.dmp
    Filesize

    584KB

  • memory/2100-144-0x0000000000000000-mapping.dmp
  • memory/2100-153-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2100-148-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2100-146-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/2100-185-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4160-134-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4160-139-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4160-137-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4160-135-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4160-133-0x0000000000000000-mapping.dmp
  • memory/4160-143-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4688-140-0x0000000000000000-mapping.dmp