Analysis

  • max time kernel
    142s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-09-2022 09:23

General

  • Target

    5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8.exe

  • Size

    724KB

  • MD5

    da2bd243d9b4d03f81edd0c339031299

  • SHA1

    57d45114484ce1f8801bbbd3ae1b4ebdeb20c1dc

  • SHA256

    5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8

  • SHA512

    7b0b5385b0062b8b4e9b455f4dc4917317dcad30c38da3b4c4b1857c19ffdb5b4f9a9f1e647295e0891c81331bdbfba878d3f52ef9378f03a9c06eca1504899e

  • SSDEEP

    12288:/vTd0NaAYNy0n3wziSwLgZY0xkY6OjPOghu4Pny87Nli7iGkvxTJs4Jr:/LCNaAYn3KZAOj2xGnr7Nli7ih5FsU

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/test3/get.php

Attributes
  • extension

    .mmvb

  • offline_id

    yd6oYv6aBN90yFzTWdZ34sXSXtXiauzOLXZyWht1

  • payload_url

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

    http://acacaca.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-xuPJqoyzQE 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: 0556Jhyjd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 10 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Loads dropped DLL 3 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
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8.exe
    "C:\Users\Admin\AppData\Local\Temp\5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:628
    • C:\Users\Admin\AppData\Local\Temp\5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8.exe
      "C:\Users\Admin\AppData\Local\Temp\5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2124
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\1f1eada8-7a6d-41d5-b069-236c6aa2db9d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1644
      • C:\Users\Admin\AppData\Local\Temp\5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8.exe
        "C:\Users\Admin\AppData\Local\Temp\5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2572
        • C:\Users\Admin\AppData\Local\Temp\5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8.exe
          "C:\Users\Admin\AppData\Local\Temp\5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3224
          • C:\Users\Admin\AppData\Local\1c9ca88e-a2e3-4ea4-973d-985e741a1df7\build2.exe
            "C:\Users\Admin\AppData\Local\1c9ca88e-a2e3-4ea4-973d-985e741a1df7\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2136
            • C:\Users\Admin\AppData\Local\1c9ca88e-a2e3-4ea4-973d-985e741a1df7\build2.exe
              "C:\Users\Admin\AppData\Local\1c9ca88e-a2e3-4ea4-973d-985e741a1df7\build2.exe"
              6⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:1368
              • 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\1c9ca88e-a2e3-4ea4-973d-985e741a1df7\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:2192
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2788
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:2344

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\mozglue.dll

    Filesize

    133KB

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • C:\ProgramData\nss3.dll

    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • C:\ProgramData\sqlite3.dll

    Filesize

    630KB

    MD5

    e477a96c8f2b18d6b5c27bde49c990bf

    SHA1

    e980c9bf41330d1e5bd04556db4646a0210f7409

    SHA256

    16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

    SHA512

    335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

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

    Filesize

    2KB

    MD5

    215064dd8b4566627489319b46e9ca43

    SHA1

    7fa698eef5f02a961b5862df135d7ebfd8a12292

    SHA256

    390f76fdb79029603900524df2f0fbfd05bf18a3bbc74b9b05b2a6dc5938393c

    SHA512

    2a5b12b41d728ce30f1712d23226bbefe73111b786156b97126d6497ef234e78feaf6db08c7412eaa336c869b93ab239cd46b33cc31ff2c8497214cba5927753

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

    Filesize

    1KB

    MD5

    a6a0160f7dee79a316edde54d910ebaa

    SHA1

    9b374842b8954e8b27a06f22f1c0de15ea768c31

    SHA256

    f3646358e7a0d83e1140296fb384dc20e38a165f8f086cf240ace49e27e5b7c0

    SHA512

    1510a5ac8bb5d3f7a3be3397ef5266861df92bb72d013d8f9432dae8f4310d7d494e67f6b49b712519fb96ef085eb1e233eb8bd4e42bfee10faf0f6da64e4b98

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

    Filesize

    488B

    MD5

    e64e678c3ee0d7d5df186cad5aca1267

    SHA1

    072447b11aed59d4e118b6e928d66833c4a1876d

    SHA256

    2807672938fca9461dab3dcad9db910206462281ad9fd096036d55388eff80ce

    SHA512

    83dfd168e9fd997f6b6422304f92d48d9739c71f0b6fed250a8217c2c18534480eefdabfa0fa5059d380d37bc2696a7dfbe5d6394170bfc31c0a26e9070e0773

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

    Filesize

    482B

    MD5

    08db07032310f4249cafd600e3af4923

    SHA1

    d450a33f9493a9e103d5bc61fc3312e65a38b03c

    SHA256

    b229d02776f1d2cfbba7b5641399b87443729435fcdfea19f7623317ceb9cc6d

    SHA512

    a85192ae2135e3f30930dfb90b51e63bf11aaf851dacde798effbecae47e95b2b46533df2d319f5da3e7cccca46a688e903ce5dff513b2a804ddbb6b2c0b7cec

  • C:\Users\Admin\AppData\Local\1c9ca88e-a2e3-4ea4-973d-985e741a1df7\build2.exe

    Filesize

    383KB

    MD5

    8d7db6982df46c3b0f0cc879d892c08a

    SHA1

    64e3d7ab4793aeb05d18a82159c579e05c45fd71

    SHA256

    116e15e94d70dde65f91f155580bd9b34ff1956b9ebe1a53b6bce912b281c1f6

    SHA512

    0eeb242e6e1356a2a9e3183f12439ef36fac40e27ac8c0df5f591c7b3c1324145627c92c3fee15aedee2c1e8cc3b966152af73a33196166c2c1bfbbd979bdb5b

  • C:\Users\Admin\AppData\Local\1c9ca88e-a2e3-4ea4-973d-985e741a1df7\build2.exe

    Filesize

    383KB

    MD5

    8d7db6982df46c3b0f0cc879d892c08a

    SHA1

    64e3d7ab4793aeb05d18a82159c579e05c45fd71

    SHA256

    116e15e94d70dde65f91f155580bd9b34ff1956b9ebe1a53b6bce912b281c1f6

    SHA512

    0eeb242e6e1356a2a9e3183f12439ef36fac40e27ac8c0df5f591c7b3c1324145627c92c3fee15aedee2c1e8cc3b966152af73a33196166c2c1bfbbd979bdb5b

  • C:\Users\Admin\AppData\Local\1c9ca88e-a2e3-4ea4-973d-985e741a1df7\build2.exe

    Filesize

    383KB

    MD5

    8d7db6982df46c3b0f0cc879d892c08a

    SHA1

    64e3d7ab4793aeb05d18a82159c579e05c45fd71

    SHA256

    116e15e94d70dde65f91f155580bd9b34ff1956b9ebe1a53b6bce912b281c1f6

    SHA512

    0eeb242e6e1356a2a9e3183f12439ef36fac40e27ac8c0df5f591c7b3c1324145627c92c3fee15aedee2c1e8cc3b966152af73a33196166c2c1bfbbd979bdb5b

  • C:\Users\Admin\AppData\Local\1f1eada8-7a6d-41d5-b069-236c6aa2db9d\5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8.exe

    Filesize

    724KB

    MD5

    da2bd243d9b4d03f81edd0c339031299

    SHA1

    57d45114484ce1f8801bbbd3ae1b4ebdeb20c1dc

    SHA256

    5718efcc7fbdfdc203bcdc098b56aaeba9131f7fe59fe2f1f78685a899840ac8

    SHA512

    7b0b5385b0062b8b4e9b455f4dc4917317dcad30c38da3b4c4b1857c19ffdb5b4f9a9f1e647295e0891c81331bdbfba878d3f52ef9378f03a9c06eca1504899e

  • memory/628-132-0x0000000002EC8000-0x0000000002F59000-memory.dmp

    Filesize

    580KB

  • memory/628-133-0x0000000004A50000-0x0000000004B6B000-memory.dmp

    Filesize

    1.1MB

  • memory/1368-160-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1368-169-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1368-164-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1368-161-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1368-158-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1368-157-0x0000000000000000-mapping.dmp

  • memory/1644-139-0x0000000000000000-mapping.dmp

  • memory/2124-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2124-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2124-134-0x0000000000000000-mapping.dmp

  • memory/2124-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2124-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2124-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2136-162-0x0000000000B18000-0x0000000000B44000-memory.dmp

    Filesize

    176KB

  • memory/2136-153-0x0000000000000000-mapping.dmp

  • memory/2136-163-0x0000000000970000-0x00000000009B9000-memory.dmp

    Filesize

    292KB

  • memory/2192-168-0x0000000000000000-mapping.dmp

  • memory/2344-171-0x0000000000000000-mapping.dmp

  • memory/2572-146-0x000000000485D000-0x00000000048EE000-memory.dmp

    Filesize

    580KB

  • memory/2572-141-0x0000000000000000-mapping.dmp

  • memory/2788-170-0x0000000000000000-mapping.dmp

  • memory/3224-143-0x0000000000000000-mapping.dmp

  • memory/3224-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-156-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3224-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB