Analysis

  • max time kernel
    89s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/12/2022, 16:41

General

  • Target

    7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2.exe

  • Size

    741KB

  • MD5

    2e456120b9c7bc8b687554ccb96131da

  • SHA1

    c15bb80d102d526239cb17895951bfbfd65c1360

  • SHA256

    7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2

  • SHA512

    838c87ca830baa0d026ceec06aa9f717279e57cdeb275c26dcd0b8cb1dcc9540c9174805d3cddc2a84da441ed7f9bbf2744cfd557454e207dc03612543d23c75

  • SSDEEP

    12288:FMgJ0ynKUc5b1v345QifAC0iIRlCFUZwdkHnImVNSKKwOhgfgJ/5OCi3tm:rqX19ifAC0i0AU4gZdffgJBOCi30

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 9 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\7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2.exe
    "C:\Users\Admin\AppData\Local\Temp\7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5088
    • C:\Users\Admin\AppData\Local\Temp\7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2.exe
      "C:\Users\Admin\AppData\Local\Temp\7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3088
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\4be0e976-a952-489c-9ffc-ba82b501d484" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2144
      • C:\Users\Admin\AppData\Local\Temp\7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2.exe
        "C:\Users\Admin\AppData\Local\Temp\7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:904
        • C:\Users\Admin\AppData\Local\Temp\7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2.exe
          "C:\Users\Admin\AppData\Local\Temp\7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4932
          • C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\build2.exe
            "C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:3120
            • C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\build2.exe
              "C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\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:1212
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:2348
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:3836
          • C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\build3.exe
            "C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2420
            • 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:2220
  • 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:1480
    • 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:4400

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        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

          3446452e22ba2f0059636e6b38bde4e6

          SHA1

          58ecd15765e6506b2a224d739f9cbe49350765d1

          SHA256

          7b9afbbe4ae8b3aecaa47b75f9fb178d864b1f138438d34c58ee7e2ec16be4c2

          SHA512

          9adc462d9531d228656dfc7c59ad0bb3acbdfc86c19a24cc8b703c96ff20e1d1296299f418f61ae7a9dcc9dfe920b8ca6a11209edbcb3c630d8ddb92c9f17ef1

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

          Filesize

          1KB

          MD5

          727b3211cc6431ef88585369c6d3551b

          SHA1

          56ce91da576d5973625a094d93d5f280a4827e97

          SHA256

          b8fbfc272d61dea1f6880ed2a51565be1702f41976a3754e83e0ee31bc283384

          SHA512

          3aa1c7dbed1f3135f110c3a8118e570a500936c54add455a7b41965ee9495186b234a09f166cd5a09fd94dc4affe0153b0b1c652b5c091e86065e3c584cd5b98

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

          Filesize

          488B

          MD5

          7b1839580757709c88aae0e8b2ae86da

          SHA1

          7545b0d0b78e25d510a5562a5978a19cbdcbcbfe

          SHA256

          e737606722238e40864ddb0944ce50f0059a13d6160ba428cbbc2db195fc705f

          SHA512

          e9a580f8198641ba620cbcca279bfd2fe609f191bd57258230fd495d9e0b0c01f6765beaec230c957dba6cbc6705225a6da334a68d1c714f7e8d79aeb46ac658

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

          Filesize

          482B

          MD5

          ab2aabfa655f189b03a09e9a61fdffde

          SHA1

          977420ef5981f072f4c799c24dcd6fd5044c056d

          SHA256

          28a79f8edc6078f408406bc07a92ca2d27251b0548636c0e835bca79fed28cd1

          SHA512

          10b8afdb1f97e1d722342949cc9a59bf31b915d9d297e754f5d9327f47c3dcdc14189b9e7f3d50a385fff623897ef5e7dd291bccd2f270be3b48877ae9ea75a1

        • C:\Users\Admin\AppData\Local\4be0e976-a952-489c-9ffc-ba82b501d484\7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2.exe

          Filesize

          741KB

          MD5

          2e456120b9c7bc8b687554ccb96131da

          SHA1

          c15bb80d102d526239cb17895951bfbfd65c1360

          SHA256

          7f6e71eee91a23a53a99e0138eb9059aaba5f4d4b90d19ef6915842beaa847d2

          SHA512

          838c87ca830baa0d026ceec06aa9f717279e57cdeb275c26dcd0b8cb1dcc9540c9174805d3cddc2a84da441ed7f9bbf2744cfd557454e207dc03612543d23c75

        • C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\build2.exe

          Filesize

          409KB

          MD5

          a131064868de7468d2e768211431401b

          SHA1

          381ad582f72b30b4764afe0a817569b384be65a2

          SHA256

          027bcfc4c5b4a06371e94f4a6b5f69cbee5bcad651d91115132844a2c10885a1

          SHA512

          40fc84899d7bed5c49980f984e3c1446dece3861e5e107fa71e1876f4b778aa8369f03422a971d144f8e65f62a109f53ba94e86bc6ddec478d1bc71f3bb29309

        • C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\build2.exe

          Filesize

          409KB

          MD5

          a131064868de7468d2e768211431401b

          SHA1

          381ad582f72b30b4764afe0a817569b384be65a2

          SHA256

          027bcfc4c5b4a06371e94f4a6b5f69cbee5bcad651d91115132844a2c10885a1

          SHA512

          40fc84899d7bed5c49980f984e3c1446dece3861e5e107fa71e1876f4b778aa8369f03422a971d144f8e65f62a109f53ba94e86bc6ddec478d1bc71f3bb29309

        • C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\build2.exe

          Filesize

          409KB

          MD5

          a131064868de7468d2e768211431401b

          SHA1

          381ad582f72b30b4764afe0a817569b384be65a2

          SHA256

          027bcfc4c5b4a06371e94f4a6b5f69cbee5bcad651d91115132844a2c10885a1

          SHA512

          40fc84899d7bed5c49980f984e3c1446dece3861e5e107fa71e1876f4b778aa8369f03422a971d144f8e65f62a109f53ba94e86bc6ddec478d1bc71f3bb29309

        • C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\build3.exe

          Filesize

          9KB

          MD5

          9ead10c08e72ae41921191f8db39bc16

          SHA1

          abe3bce01cd34afc88e2c838173f8c2bd0090ae1

          SHA256

          8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

          SHA512

          aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

        • C:\Users\Admin\AppData\Local\9e003445-6cd7-4789-9897-04f2acad205f\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/904-145-0x0000000002192000-0x0000000002223000-memory.dmp

          Filesize

          580KB

        • memory/1212-162-0x0000000000400000-0x0000000000467000-memory.dmp

          Filesize

          412KB

        • memory/1212-164-0x0000000000400000-0x0000000000467000-memory.dmp

          Filesize

          412KB

        • memory/1212-169-0x0000000060900000-0x0000000060992000-memory.dmp

          Filesize

          584KB

        • memory/1212-156-0x0000000000400000-0x0000000000467000-memory.dmp

          Filesize

          412KB

        • memory/1212-191-0x0000000000400000-0x0000000000467000-memory.dmp

          Filesize

          412KB

        • memory/1212-160-0x0000000000400000-0x0000000000467000-memory.dmp

          Filesize

          412KB

        • memory/1212-158-0x0000000000400000-0x0000000000467000-memory.dmp

          Filesize

          412KB

        • memory/3088-134-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3088-133-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3088-138-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3088-136-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3120-159-0x00000000004D8000-0x0000000000506000-memory.dmp

          Filesize

          184KB

        • memory/3120-161-0x0000000002060000-0x00000000020B3000-memory.dmp

          Filesize

          332KB

        • memory/4932-163-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4932-146-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4932-144-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4932-151-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5088-137-0x0000000002310000-0x000000000242B000-memory.dmp

          Filesize

          1.1MB

        • memory/5088-135-0x0000000002244000-0x00000000022D5000-memory.dmp

          Filesize

          580KB