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Analysis

  • max time kernel
    76s
  • max time network
    138s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    06/09/2022, 15:35

General

  • Target

    aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8.exe

  • Size

    778KB

  • MD5

    4df0d4112dd43dab559098daab5a36a5

  • SHA1

    06737287c3efb54280857ed97f4888a9bf10c2d4

  • SHA256

    aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8

  • SHA512

    1dfbff68cb2a9fa3cba94f204e10ef4215a102a0b71666fe9257e4c1de85bb0ed5e9f84747ac20800ea34a2ffb87ab8f3bcf13643da3302b69199be139f9bef3

  • SSDEEP

    12288:3ULzSGNblGIx3WqoGYewEXJt09SpwMdqbbVikDx0mmw5vZ7Y8j0Zi:klFUIx3YeF5amwMdqbbokTmw5pCZ

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .oovb

  • offline_id

    6GXhR4uyHH9NXT2qot14T0HeNSviNKH0Q6PGVNt1

  • 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-6g0MALAb7E 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: 0552Jhyjd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 9 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • 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.

  • Program crash 1 IoCs
  • 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\aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8.exe
    "C:\Users\Admin\AppData\Local\Temp\aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2628
    • C:\Users\Admin\AppData\Local\Temp\aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8.exe
      "C:\Users\Admin\AppData\Local\Temp\aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4060
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a946c100-2f0e-479b-97b7-c295b074a9f0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1184
      • C:\Users\Admin\AppData\Local\Temp\aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8.exe
        "C:\Users\Admin\AppData\Local\Temp\aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4200
        • C:\Users\Admin\AppData\Local\Temp\aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8.exe
          "C:\Users\Admin\AppData\Local\Temp\aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4080
          • C:\Users\Admin\AppData\Local\37876fca-2e7e-475b-bb06-9ea794a85415\build2.exe
            "C:\Users\Admin\AppData\Local\37876fca-2e7e-475b-bb06-9ea794a85415\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:5012
            • C:\Users\Admin\AppData\Local\37876fca-2e7e-475b-bb06-9ea794a85415\build2.exe
              "C:\Users\Admin\AppData\Local\37876fca-2e7e-475b-bb06-9ea794a85415\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:1324
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1324 -s 1772
                7⤵
                • Program crash
                PID:4924

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

    9cd19ed49787d5bf969ac81a2dbf7ce9

    SHA1

    4ff7b3372f9778f210014bdd7989d6f9442caa37

    SHA256

    5e317a2565c34c5d13efedd5a58537a9f255df17457a567e5fcc061962475b22

    SHA512

    589a98c719b6f67e875cc05438d4801d8025e8661bc30d51351df864314f0f4e5f35aa27422954a43eddd9ca04903043b46a47335311586f709e8eeae87cf7b9

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

    Filesize

    1KB

    MD5

    7c27ffae0cbd6d55b86f387667635294

    SHA1

    6df10a537a970852086711da85ae84f7355bff72

    SHA256

    b6a9400010fea1af51104c2b48fdd4383d8b7a81bd62a22c188db3cdb7413503

    SHA512

    140752fd448ed5cd01c5463d67b7dd2c5c111fd4256d3686b792bc0ff788bed49fdfe901402fdb080b9a6c0789725dda6256280120fadc5aca1f127a552e13d6

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

    Filesize

    488B

    MD5

    38417a7ba03ecbb9c0a551ad93e72717

    SHA1

    24e8302ebdede7ffba436afbdc3c2e51481b8c4c

    SHA256

    0164dea8bbbcfb0196d4c0138a32c7946080d9635d3d02b1de88d5224071a0f7

    SHA512

    da568a8662dcdd503c0e035febb6723b7cc89db14024c46076bed65a45d3cb4e1f8f67f5fc5035e97d0cb1504e48514341d88ca8c271089a2caed0fd8785c217

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

    Filesize

    482B

    MD5

    1a4c3314c2030bb451f2c107c19a67b0

    SHA1

    4bb12ac992cd4ca15447dbc4230d15ad3add3baf

    SHA256

    225cd67f4ed8c9b8f4658f98aa2bffeca1e473e7972af0666263116ffb161464

    SHA512

    80820dab57dd36c3d5a36c8278cd72df188070f35a9bf432432c255cd052af17c340ffb47b88fbb1f3a7ccc41f7b3bb167936c891038575ca668dfd8b23e4b00

  • C:\Users\Admin\AppData\Local\37876fca-2e7e-475b-bb06-9ea794a85415\build2.exe

    Filesize

    383KB

    MD5

    8d7db6982df46c3b0f0cc879d892c08a

    SHA1

    64e3d7ab4793aeb05d18a82159c579e05c45fd71

    SHA256

    116e15e94d70dde65f91f155580bd9b34ff1956b9ebe1a53b6bce912b281c1f6

    SHA512

    0eeb242e6e1356a2a9e3183f12439ef36fac40e27ac8c0df5f591c7b3c1324145627c92c3fee15aedee2c1e8cc3b966152af73a33196166c2c1bfbbd979bdb5b

  • C:\Users\Admin\AppData\Local\37876fca-2e7e-475b-bb06-9ea794a85415\build2.exe

    Filesize

    383KB

    MD5

    8d7db6982df46c3b0f0cc879d892c08a

    SHA1

    64e3d7ab4793aeb05d18a82159c579e05c45fd71

    SHA256

    116e15e94d70dde65f91f155580bd9b34ff1956b9ebe1a53b6bce912b281c1f6

    SHA512

    0eeb242e6e1356a2a9e3183f12439ef36fac40e27ac8c0df5f591c7b3c1324145627c92c3fee15aedee2c1e8cc3b966152af73a33196166c2c1bfbbd979bdb5b

  • C:\Users\Admin\AppData\Local\37876fca-2e7e-475b-bb06-9ea794a85415\build2.exe

    Filesize

    383KB

    MD5

    8d7db6982df46c3b0f0cc879d892c08a

    SHA1

    64e3d7ab4793aeb05d18a82159c579e05c45fd71

    SHA256

    116e15e94d70dde65f91f155580bd9b34ff1956b9ebe1a53b6bce912b281c1f6

    SHA512

    0eeb242e6e1356a2a9e3183f12439ef36fac40e27ac8c0df5f591c7b3c1324145627c92c3fee15aedee2c1e8cc3b966152af73a33196166c2c1bfbbd979bdb5b

  • C:\Users\Admin\AppData\Local\a946c100-2f0e-479b-97b7-c295b074a9f0\aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8.exe

    Filesize

    778KB

    MD5

    4df0d4112dd43dab559098daab5a36a5

    SHA1

    06737287c3efb54280857ed97f4888a9bf10c2d4

    SHA256

    aff93a8e6265ae3f03f5a2faffb22b720a69e9948de001246cde0c7099ae05f8

    SHA512

    1dfbff68cb2a9fa3cba94f204e10ef4215a102a0b71666fe9257e4c1de85bb0ed5e9f84747ac20800ea34a2ffb87ab8f3bcf13643da3302b69199be139f9bef3

  • \ProgramData\mozglue.dll

    Filesize

    133KB

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll

    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • \ProgramData\sqlite3.dll

    Filesize

    630KB

    MD5

    e477a96c8f2b18d6b5c27bde49c990bf

    SHA1

    e980c9bf41330d1e5bd04556db4646a0210f7409

    SHA256

    16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

    SHA512

    335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

  • memory/1324-497-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1324-445-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2628-127-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-147-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-133-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-134-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-136-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-137-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-138-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-139-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-140-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-141-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-143-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-142-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-144-0x0000000002670000-0x000000000270A000-memory.dmp

    Filesize

    616KB

  • memory/2628-146-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-145-0x0000000002710000-0x000000000282B000-memory.dmp

    Filesize

    1.1MB

  • memory/2628-132-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-148-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-149-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-131-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-130-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-129-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-128-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-126-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-125-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-124-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-123-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-122-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-121-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/2628-120-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-161-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-184-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-164-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-163-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-166-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-167-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-165-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-169-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-168-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-170-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-171-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-172-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-173-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-175-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-174-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-176-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-177-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-178-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-179-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-180-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-181-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-182-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-183-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-162-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-185-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-186-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-187-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-202-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4060-160-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-159-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-250-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4060-150-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4060-152-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-153-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-158-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-157-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4060-156-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-154-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4060-155-0x0000000077C80000-0x0000000077E0E000-memory.dmp

    Filesize

    1.6MB

  • memory/4080-472-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4080-350-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5012-405-0x00000000008C0000-0x0000000000909000-memory.dmp

    Filesize

    292KB

  • memory/5012-404-0x0000000000AD6000-0x0000000000B02000-memory.dmp

    Filesize

    176KB