Analysis

  • max time kernel
    54s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/12/2022, 08:35

General

  • Target

    4525da518da4d8644df5834756776c7b.exe

  • Size

    744KB

  • MD5

    4525da518da4d8644df5834756776c7b

  • SHA1

    677d891e6194e9016e46e1357a81c525a07267ff

  • SHA256

    58ffdedad7310d83d66e0ac607d7bd7271be5308adfa48c1a54447bd5c692ff1

  • SHA512

    b4017e7e9c1db5dfc28594e5681daa5ae0ebabefd248486fc5d1f8f8478021656d0ec5fb566354e383aa5eed295762ca28cf12d88c32c574a44f6b49ad7473ca

  • SSDEEP

    12288:PcTvfrgC66FgkHcl/prjQYHNpa0o+fQNAfWO3/X16cMd+5KGnOClX/BEfaSpwY:SIFDQ8ip+uO3/X1GiOUX/miST

Malware Config

Extracted

Family

djvu

C2

http://ex3mall.com/test1/get.php

Attributes
  • extension

    .isal

  • offline_id

    m3KmScxfDyEQzJYP8qjOSfP4FvpsOXlekGuMPzt1

  • payload_url

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

    http://ex3mall.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-oWam3yYrSr 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: 0620JOsie

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 4 IoCs
  • Checks computer location settings 2 TTPs 3 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.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4525da518da4d8644df5834756776c7b.exe
    "C:\Users\Admin\AppData\Local\Temp\4525da518da4d8644df5834756776c7b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:960
    • C:\Users\Admin\AppData\Local\Temp\4525da518da4d8644df5834756776c7b.exe
      "C:\Users\Admin\AppData\Local\Temp\4525da518da4d8644df5834756776c7b.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1624
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\6f04ad72-7df6-4f0c-aec5-897c20600851" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4224
      • C:\Users\Admin\AppData\Local\Temp\4525da518da4d8644df5834756776c7b.exe
        "C:\Users\Admin\AppData\Local\Temp\4525da518da4d8644df5834756776c7b.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3808
        • C:\Users\Admin\AppData\Local\Temp\4525da518da4d8644df5834756776c7b.exe
          "C:\Users\Admin\AppData\Local\Temp\4525da518da4d8644df5834756776c7b.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3116
          • C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\build2.exe
            "C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4708
            • C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\build2.exe
              "C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\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:4672
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:1676
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4276
          • C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\build3.exe
            "C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4492
            • 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:2576
  • 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:1956
    • 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:2640

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

    Filesize

    2KB

    MD5

    d725336098482e86274e5930393506a1

    SHA1

    7cb24085418693dc0c0fc876b6f7d2d400a7c256

    SHA256

    a2550a47e8dee78c170ecdfc8918137469b6115cf32fedc091b80c7dea2701a1

    SHA512

    f67ff810c97f14f9704439a7a3d34588b013eedc97149298c833926bc92d12b1e76b68c684863f86f8dede7fc677139f6c8af8e83bd43cad965ed32bda15ed3f

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

    Filesize

    1KB

    MD5

    bae107243c3c1cc23eb066f981b79948

    SHA1

    ed066a4326ae4eb5db4b00b0bb0290f006ad456c

    SHA256

    7d2ba9f4e363368512dc2388d792c3f971d18699234c4edab57ddd4053870026

    SHA512

    67a0ba993ab7abab0973683f134d71ed96cbff33368b222fc84e57def50c57d1c6d1c64362738baa9efa8cd84a3ccee30cc67284b2cd8ea53cbb8d1bfed94764

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

    Filesize

    488B

    MD5

    fcde1bbc175e566ed41a0eadd4f1f973

    SHA1

    cd93bc829eb28d505b8c04d5a7c7fffff1425ab5

    SHA256

    75cf4b2facb532b301e1b93a67876ab9b4b1771023ee2b0391e0a959ed644d6e

    SHA512

    31d9cded7d11a0cf315fe56dee17fa46c2d5bd4d6c53099cbcf1fdabd1d64e327d5d57bdfb47f595d7454a4fc95b3d2e328cb5ac7858fbc829d5e2a08c32ad2d

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

    Filesize

    482B

    MD5

    219dab0fe017b3c56fb5af83309fe37d

    SHA1

    ac9e9d0da8c78d31694beea0482c823411b23878

    SHA256

    e153ec3eccd03fd55894dc8d99ffdf6f4fcab4728929397be000daf59620cd4a

    SHA512

    26c4869f0a02b5c2a2e326e5c97e3ed49f5c1218e8cc9a7cc2bb08a430f376c640f24a69e5141de3de215534ac509cb4067e5bdac33beefde3606d40373db367

  • C:\Users\Admin\AppData\Local\6f04ad72-7df6-4f0c-aec5-897c20600851\4525da518da4d8644df5834756776c7b.exe

    Filesize

    744KB

    MD5

    4525da518da4d8644df5834756776c7b

    SHA1

    677d891e6194e9016e46e1357a81c525a07267ff

    SHA256

    58ffdedad7310d83d66e0ac607d7bd7271be5308adfa48c1a54447bd5c692ff1

    SHA512

    b4017e7e9c1db5dfc28594e5681daa5ae0ebabefd248486fc5d1f8f8478021656d0ec5fb566354e383aa5eed295762ca28cf12d88c32c574a44f6b49ad7473ca

  • C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\build2.exe

    Filesize

    409KB

    MD5

    a131064868de7468d2e768211431401b

    SHA1

    381ad582f72b30b4764afe0a817569b384be65a2

    SHA256

    027bcfc4c5b4a06371e94f4a6b5f69cbee5bcad651d91115132844a2c10885a1

    SHA512

    40fc84899d7bed5c49980f984e3c1446dece3861e5e107fa71e1876f4b778aa8369f03422a971d144f8e65f62a109f53ba94e86bc6ddec478d1bc71f3bb29309

  • C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\build2.exe

    Filesize

    409KB

    MD5

    a131064868de7468d2e768211431401b

    SHA1

    381ad582f72b30b4764afe0a817569b384be65a2

    SHA256

    027bcfc4c5b4a06371e94f4a6b5f69cbee5bcad651d91115132844a2c10885a1

    SHA512

    40fc84899d7bed5c49980f984e3c1446dece3861e5e107fa71e1876f4b778aa8369f03422a971d144f8e65f62a109f53ba94e86bc6ddec478d1bc71f3bb29309

  • C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\build2.exe

    Filesize

    409KB

    MD5

    a131064868de7468d2e768211431401b

    SHA1

    381ad582f72b30b4764afe0a817569b384be65a2

    SHA256

    027bcfc4c5b4a06371e94f4a6b5f69cbee5bcad651d91115132844a2c10885a1

    SHA512

    40fc84899d7bed5c49980f984e3c1446dece3861e5e107fa71e1876f4b778aa8369f03422a971d144f8e65f62a109f53ba94e86bc6ddec478d1bc71f3bb29309

  • C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\b1d758ac-cdbd-4f6b-9f3e-5edbf157fa7e\build3.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

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • memory/960-137-0x0000000002210000-0x000000000232B000-memory.dmp

    Filesize

    1.1MB

  • memory/960-135-0x00000000009D1000-0x0000000000A62000-memory.dmp

    Filesize

    580KB

  • memory/1624-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1624-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1624-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1624-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1624-133-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3116-168-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3116-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3116-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3116-148-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3808-146-0x000000000072B000-0x00000000007BC000-memory.dmp

    Filesize

    580KB

  • memory/4672-166-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/4672-169-0x0000000060900000-0x0000000060992000-memory.dmp

    Filesize

    584KB

  • memory/4672-167-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/4672-164-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/4672-191-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/4672-161-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/4708-163-0x00000000006F8000-0x0000000000726000-memory.dmp

    Filesize

    184KB

  • memory/4708-165-0x0000000002080000-0x00000000020D3000-memory.dmp

    Filesize

    332KB