Analysis

  • max time kernel
    88s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    02-12-2021 04:55

General

  • Target

    4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc.exe

  • Size

    780KB

  • MD5

    6b38e6fbfa281b96b13737880b2fa3b6

  • SHA1

    7ff558eb3391918d09390604a71bea944c3dc06e

  • SHA256

    4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc

  • SHA512

    64ab43d61d601dcffae2ea1ebc40863ed697fb1cd7b2bf5f0c7fd55710491b58fd5d56ff5e397713cdcaba3adaca0fc92475b7b27daf9a780b7284fbb7f3e091

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .moia

  • offline_id

    K3PMMX2aWwpnYby88Dzg7tmaIW7Tv0HMWvSyr7t1

  • payload_url

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

    http://tzgl.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-rIyEiK9ekc 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: 0355gSd743d

rsa_pubkey.plain

Extracted

Family

vidar

Version

48.9

Botnet

517

C2

https://qoto.org/@mniami

https://noc.social/@menaomi

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 6 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 4 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 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
  • Kills process with taskkill 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc.exe
    "C:\Users\Admin\AppData\Local\Temp\4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3448
    • C:\Users\Admin\AppData\Local\Temp\4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc.exe
      "C:\Users\Admin\AppData\Local\Temp\4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3628
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\281b64b8-5246-462e-8839-7a4d53e3a894" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4348
      • C:\Users\Admin\AppData\Local\Temp\4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc.exe
        "C:\Users\Admin\AppData\Local\Temp\4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4236
        • C:\Users\Admin\AppData\Local\Temp\4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc.exe
          "C:\Users\Admin\AppData\Local\Temp\4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4488
          • C:\Users\Admin\AppData\Local\710e9a2f-7f20-44b3-b7c4-9c77cb4ba6d2\build2.exe
            "C:\Users\Admin\AppData\Local\710e9a2f-7f20-44b3-b7c4-9c77cb4ba6d2\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:592
            • C:\Users\Admin\AppData\Local\710e9a2f-7f20-44b3-b7c4-9c77cb4ba6d2\build2.exe
              "C:\Users\Admin\AppData\Local\710e9a2f-7f20-44b3-b7c4-9c77cb4ba6d2\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:824
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\710e9a2f-7f20-44b3-b7c4-9c77cb4ba6d2\build2.exe" & del C:\ProgramData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:1372
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1624
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:2172

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\freebl3.dll

    MD5

    ef2834ac4ee7d6724f255beaf527e635

    SHA1

    5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

    SHA256

    a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

    SHA512

    c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

  • C:\ProgramData\mozglue.dll

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • C:\ProgramData\msvcp140.dll

    MD5

    109f0f02fd37c84bfc7508d4227d7ed5

    SHA1

    ef7420141bb15ac334d3964082361a460bfdb975

    SHA256

    334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

    SHA512

    46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

  • C:\ProgramData\nss3.dll

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • C:\ProgramData\softokn3.dll

    MD5

    a2ee53de9167bf0d6c019303b7ca84e5

    SHA1

    2a3c737fa1157e8483815e98b666408a18c0db42

    SHA256

    43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

    SHA512

    45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

  • C:\ProgramData\vcruntime140.dll

    MD5

    7587bf9cb4147022cd5681b015183046

    SHA1

    f2106306a8f6f0da5afb7fc765cfa0757ad5a628

    SHA256

    c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

    SHA512

    0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

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

    MD5

    237cc7db072d97a949e15c2d8dbea891

    SHA1

    43ef7b53667e94ae04496fa6cf6efc7f9a8ba83f

    SHA256

    7f9669eedb0bdb3b6647128101ec024ac5fc2447bd4372fbc8b4389f5d255acb

    SHA512

    07c69dbcb95369ffcfdcbe402d582e7dcad1b5f2976f9156460197c891eefae41b43d2640df96d08c4ae2338a5c8d03aeaa662487d0635678d34622aede96b2b

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157

    MD5

    f7dcb24540769805e5bb30d193944dce

    SHA1

    e26c583c562293356794937d9e2e6155d15449ee

    SHA256

    6b88c6ac55bbd6fea0ebe5a760d1ad2cfce251c59d0151a1400701cb927e36ea

    SHA512

    cb5ad678b0ef642bf492f32079fe77e8be20c02de267f04b545df346b25f3e4eb98bb568c4c2c483bb88f7d1826863cb515b570d620766e52476c8ee2931ea94

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

    MD5

    5db4d4fdb4428e5d3c794ed0a7c25958

    SHA1

    374866bf683c5c6a3620d7dcfe29ef04221c4723

    SHA256

    19ee4604acc3747d7a43fe1703dcacf39ca80e58a5f20e8607172b8f7037e45e

    SHA512

    8ad3ce80577dfc0e4edfb40c548d6b5ba88ca22bca51d0c9fe757d9e155372fe4c212ae12e8f7ed13fd40369a0722399b41c5f0edf9eb03de57fbd9890b2989d

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

    MD5

    fbefd3d7a833502f878cf8189b133248

    SHA1

    4325ca5ea95b219cdc02a3a434b8d4d0b1171686

    SHA256

    8c29efc39692f66dbeb787c9168fa7c8e7ed766398adb7304f07b9fa63a544da

    SHA512

    dfabd0431e516b3e6d937f9f9d33a92b85bc825cd0a978be2154e798e5b54e8adf041e7be79c98e7469c74b39bea1cd5c50b85a4918bfc55093cf019826711c8

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157

    MD5

    2939999c948fc6945449a678a4df616d

    SHA1

    c7d594a2bf015135e1ef61ef06f60f779da49ebd

    SHA256

    c0160c37090c3e2034e2c59ff5856ce073be15fdf65ba03e68cf13bb1769e9d8

    SHA512

    5bcef843a27b74208dd685e5d37d75717de4695bf869625175fc9d45184242c181de03bde9906a2f684892a45f3a9e856800a93dd3f772c1ab6c8aee26f7ec2e

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

    MD5

    8a8c6c3b2b5dd11af17e944e44ec5d4c

    SHA1

    46cc0a2d8c00cbfed77cc1a1a877987274a89686

    SHA256

    67657296622ae54ef9c8d3291190229751a2a28feeecf86b0c7c5271e8cbbc32

    SHA512

    94340f2ee19b3652bb0cb25811187cc72d461ed19fad4a2f70af03e6865e2d3a6c3333937620a065a6e149289c7ee658df170ecdbb445db909e5b94e2ba143f7

  • C:\Users\Admin\AppData\Local\281b64b8-5246-462e-8839-7a4d53e3a894\4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc.exe

    MD5

    6b38e6fbfa281b96b13737880b2fa3b6

    SHA1

    7ff558eb3391918d09390604a71bea944c3dc06e

    SHA256

    4afbaa63ed3044a0f5acd00a53bda7a2c299ac422cde49f5471e246d646e17bc

    SHA512

    64ab43d61d601dcffae2ea1ebc40863ed697fb1cd7b2bf5f0c7fd55710491b58fd5d56ff5e397713cdcaba3adaca0fc92475b7b27daf9a780b7284fbb7f3e091

  • C:\Users\Admin\AppData\Local\710e9a2f-7f20-44b3-b7c4-9c77cb4ba6d2\build2.exe

    MD5

    37f77c6f8805407d31d2b2b63e853316

    SHA1

    2535b538d6c9337a10ac4ed80f5f7b6bceeea00a

    SHA256

    c19a32b2c1b56473245cb672da9d589227f52966b40c9b761765e85418052f35

    SHA512

    71208f96291b8d808e33202587882bbd771a5169e60ba1568051148535977475f345c3f61f1a1d4a413b4a3ed278d6167335d9ea49b7b318d6ee303ae3db4cb1

  • C:\Users\Admin\AppData\Local\710e9a2f-7f20-44b3-b7c4-9c77cb4ba6d2\build2.exe

    MD5

    37f77c6f8805407d31d2b2b63e853316

    SHA1

    2535b538d6c9337a10ac4ed80f5f7b6bceeea00a

    SHA256

    c19a32b2c1b56473245cb672da9d589227f52966b40c9b761765e85418052f35

    SHA512

    71208f96291b8d808e33202587882bbd771a5169e60ba1568051148535977475f345c3f61f1a1d4a413b4a3ed278d6167335d9ea49b7b318d6ee303ae3db4cb1

  • C:\Users\Admin\AppData\Local\710e9a2f-7f20-44b3-b7c4-9c77cb4ba6d2\build2.exe

    MD5

    37f77c6f8805407d31d2b2b63e853316

    SHA1

    2535b538d6c9337a10ac4ed80f5f7b6bceeea00a

    SHA256

    c19a32b2c1b56473245cb672da9d589227f52966b40c9b761765e85418052f35

    SHA512

    71208f96291b8d808e33202587882bbd771a5169e60ba1568051148535977475f345c3f61f1a1d4a413b4a3ed278d6167335d9ea49b7b318d6ee303ae3db4cb1

  • \ProgramData\mozglue.dll

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • memory/592-135-0x0000000000000000-mapping.dmp

  • memory/592-141-0x0000000004820000-0x000000000489D000-memory.dmp

    Filesize

    500KB

  • memory/592-142-0x00000000049D0000-0x0000000004AA9000-memory.dmp

    Filesize

    868KB

  • memory/824-139-0x00000000004A51CD-mapping.dmp

  • memory/824-138-0x0000000000400000-0x00000000004DC000-memory.dmp

    Filesize

    880KB

  • memory/824-143-0x0000000000400000-0x00000000004DC000-memory.dmp

    Filesize

    880KB

  • memory/1372-146-0x0000000000000000-mapping.dmp

  • memory/1624-147-0x0000000000000000-mapping.dmp

  • memory/2172-148-0x0000000000000000-mapping.dmp

  • memory/3448-119-0x00000000049F0000-0x0000000004A81000-memory.dmp

    Filesize

    580KB

  • memory/3448-121-0x0000000004B00000-0x0000000004C1B000-memory.dmp

    Filesize

    1.1MB

  • memory/3628-122-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-118-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3628-120-0x0000000000424141-mapping.dmp

  • memory/4236-125-0x0000000000000000-mapping.dmp

  • memory/4348-123-0x0000000000000000-mapping.dmp

  • memory/4488-127-0x0000000000424141-mapping.dmp

  • memory/4488-129-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB