Analysis

  • max time kernel
    86s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-09-2022 20:13

General

  • Target

    c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe.exe

  • Size

    795KB

  • MD5

    bebd6605ab183597b92b30595bf800c5

  • SHA1

    d8c91958f1ef8d009fa329dc8faebaaf4ef8845e

  • SHA256

    c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe

  • SHA512

    5a22a69042eb6d932dc095fe08e0d5a8782e1bbc417548fc4f20b70d9c60a5db7e957e513a99df11b2ef507bf9193be2f5fb8115fe009213a2a032f40c6a0e22

  • SSDEEP

    12288:A01CBdyOByjQI2aVooUfgm1KsdReyKsOSKnRKjsZF+GBV/oo9:A0IBYB2aMnKsdMyKHSwRKjPO/V9

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .aamv

  • offline_id

    MyudhIExJux2oRQXw95TT1oAPu7mvqRMzxr1eet1

  • 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-4Xcf4IX21n 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: 0564Jhyjd

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
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe.exe
    "C:\Users\Admin\AppData\Local\Temp\c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4512
    • C:\Users\Admin\AppData\Local\Temp\c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe.exe
      "C:\Users\Admin\AppData\Local\Temp\c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4964
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\ea30a169-829b-42d9-8ddf-7b01da8fea44" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:5036
      • C:\Users\Admin\AppData\Local\Temp\c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe.exe
        "C:\Users\Admin\AppData\Local\Temp\c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:260
        • C:\Users\Admin\AppData\Local\Temp\c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe.exe
          "C:\Users\Admin\AppData\Local\Temp\c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3768
          • C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\build2.exe
            "C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1936
            • C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\build2.exe
              "C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\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:1724
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" `NT/c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\build2.exe" & del C:\PrograData\*.dll & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:1840
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im build2.exe /f
                  8⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1468
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:1744
          • C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\build3.exe
            "C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2848
            • 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:2340
  • 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:2832
    • 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:2028

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • C:\ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

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

    Filesize

    2KB

    MD5

    1c626eac6241b02b0082a76f150a3a8a

    SHA1

    b7c0c6ae1d3d5a2beaf4c4f3744cac6285f04858

    SHA256

    412116af67c3a894bee8821158ee91447ca6cfe0d5b43d0524e6c5af5defaf69

    SHA512

    8550f0ec9a9c5f152a3b5eb49a91084d3201589373b8d381233926f1ac34bd0c276fa1e3c9da75bd8297f417d9f566f4bf6b882107c7255522f745e6d446802a

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

    Filesize

    1KB

    MD5

    48e98893438d04fa64bb49bbdafbf960

    SHA1

    e28578281fc80cb97275a94aa0e9da0db8285b87

    SHA256

    2ad261d743636a48688f1d3a1a9def925c6a7642db3dea12b8c23e5aac46719d

    SHA512

    9eb1160e51ce79e0a7055a053ac5f25d2ff8d7277f8af146c188a1bd24deddd12df219aeb410f072b26ccaa114b88d7680d474c86736a0ab3187ec7ee08c73b0

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

    Filesize

    488B

    MD5

    8967cc0a4a6d550eb0312ec0e5a6b91c

    SHA1

    840701ff8f6fd5cd16f3cb7bcd2fee49f8fd28a5

    SHA256

    cc43aaa252c9d5a4cf4fd0c117c5f352a69703232c89a41e243b7d1159667934

    SHA512

    48a72ddf5333f7c55ca8e55751f576a92b0144a4d2c8ca6f9315ca05bf81086645411d47fb84f376f687cd7a87922799b9dfaa0a31b0b8a69f9a416f59654d79

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

    Filesize

    482B

    MD5

    97018a61b5b102a9c5c952d7baae2a88

    SHA1

    19571ec99205d5f64c0fd5dc345c9507bc44d2e9

    SHA256

    e1a0d841743dbea95a01c09ed2a0acc6aff631a0ec18793f9ac1a2ce91abbcf1

    SHA512

    00b3dc2b1179325cef0ad2e41b6d647423107d1592176b6de16b2bb53e40cb41d32018fde9e4db1ee22853bbcc0d5bf4c39e91a4b7012808db1530438b039889

  • C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\build2.exe

    Filesize

    400KB

    MD5

    fe7e1a7ed3cece1c44e1eac81cb36948

    SHA1

    f9f191e7e67ae39eb71099c4cedbf1be234e951e

    SHA256

    32403699d91c207a88535bb023cf2cc6ca2f3bdb598439b3018a807f5949ca18

    SHA512

    ce00aa592146ecd61d6f14401c22f4a682743702c91dcec4fa3e020f5a337aa500b9f2e5b5e7c39de2475c48332bf5b4b69ba04eb477f31364bd9ea3d730ce35

  • C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\build2.exe

    Filesize

    400KB

    MD5

    fe7e1a7ed3cece1c44e1eac81cb36948

    SHA1

    f9f191e7e67ae39eb71099c4cedbf1be234e951e

    SHA256

    32403699d91c207a88535bb023cf2cc6ca2f3bdb598439b3018a807f5949ca18

    SHA512

    ce00aa592146ecd61d6f14401c22f4a682743702c91dcec4fa3e020f5a337aa500b9f2e5b5e7c39de2475c48332bf5b4b69ba04eb477f31364bd9ea3d730ce35

  • C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\build2.exe

    Filesize

    400KB

    MD5

    fe7e1a7ed3cece1c44e1eac81cb36948

    SHA1

    f9f191e7e67ae39eb71099c4cedbf1be234e951e

    SHA256

    32403699d91c207a88535bb023cf2cc6ca2f3bdb598439b3018a807f5949ca18

    SHA512

    ce00aa592146ecd61d6f14401c22f4a682743702c91dcec4fa3e020f5a337aa500b9f2e5b5e7c39de2475c48332bf5b4b69ba04eb477f31364bd9ea3d730ce35

  • C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\8b26bfa7-66db-41b2-9707-c5746843f148\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\ea30a169-829b-42d9-8ddf-7b01da8fea44\c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe.exe

    Filesize

    795KB

    MD5

    bebd6605ab183597b92b30595bf800c5

    SHA1

    d8c91958f1ef8d009fa329dc8faebaaf4ef8845e

    SHA256

    c31c0f32e30ede19c6ca3cd0bd53a204f147c058b2c1e878a9282db8f4d2cefe

    SHA512

    5a22a69042eb6d932dc095fe08e0d5a8782e1bbc417548fc4f20b70d9c60a5db7e957e513a99df11b2ef507bf9193be2f5fb8115fe009213a2a032f40c6a0e22

  • 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/260-141-0x0000000000000000-mapping.dmp

  • memory/260-146-0x00000000020D6000-0x0000000002168000-memory.dmp

    Filesize

    584KB

  • memory/1468-191-0x0000000000000000-mapping.dmp

  • memory/1724-167-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1724-161-0x0000000000000000-mapping.dmp

  • memory/1724-190-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1724-169-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/1724-168-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1724-165-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1724-162-0x0000000000400000-0x000000000045E000-memory.dmp

    Filesize

    376KB

  • memory/1744-192-0x0000000000000000-mapping.dmp

  • memory/1840-189-0x0000000000000000-mapping.dmp

  • memory/1936-166-0x0000000002060000-0x00000000020AA000-memory.dmp

    Filesize

    296KB

  • memory/1936-164-0x00000000004AD000-0x00000000004D9000-memory.dmp

    Filesize

    176KB

  • memory/1936-153-0x0000000000000000-mapping.dmp

  • memory/2028-195-0x0000000000000000-mapping.dmp

  • memory/2340-159-0x0000000000000000-mapping.dmp

  • memory/2848-156-0x0000000000000000-mapping.dmp

  • memory/3768-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3768-160-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3768-148-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3768-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3768-143-0x0000000000000000-mapping.dmp

  • memory/4512-132-0x000000000221B000-0x00000000022AD000-memory.dmp

    Filesize

    584KB

  • memory/4512-133-0x0000000002330000-0x000000000244B000-memory.dmp

    Filesize

    1.1MB

  • memory/4964-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4964-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4964-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4964-135-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4964-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4964-134-0x0000000000000000-mapping.dmp

  • memory/5036-139-0x0000000000000000-mapping.dmp