Analysis

  • max time kernel
    148s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    01-01-2024 15:12

General

  • Target

    2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

  • Size

    701KB

  • MD5

    6741d5aef031c6b1e51f386fefc1225e

  • SHA1

    95ea397aed18143bc18da02c21e693c44e373f90

  • SHA256

    2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9

  • SHA512

    90034da6a496dfcf2b7227b2aa585983cbe80f9a69586743eb219035c1bdab59eaa912139de0e576db2194383f1c70e16042736c1a593fd7e7a4ea93d515df5d

  • SSDEEP

    12288:ZohXTLkKkP0rRl6CRHCwWshS7JUc9ouDCwI/d9V5qyBmPjCkuYDaFB:ZYTLG2U/wWRVUYoUCwCVdmr7uma

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/lancer/get.php

Attributes
  • extension

    .qarj

  • offline_id

    VrBq0iLIRHjQLgVRLsN1WK8yFkTCRDCCvPkwnHt1

  • payload_url

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

    http://zexeq.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-zUVSNg4KRZ 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: 0664Iopd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 14 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
    "C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:852
    • C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
      "C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1972
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a146bc7e-077f-4f3d-8e57-d7434f7e6be1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3012
      • C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
        "C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2416
        • C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
          "C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1652
          • C:\Users\Admin\AppData\Local\6ab5ffbf-d723-4730-b2b5-4ec62b3275b4\build3.exe
            "C:\Users\Admin\AppData\Local\6ab5ffbf-d723-4730-b2b5-4ec62b3275b4\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2472
            • C:\Users\Admin\AppData\Local\6ab5ffbf-d723-4730-b2b5-4ec62b3275b4\build3.exe
              "C:\Users\Admin\AppData\Local\6ab5ffbf-d723-4730-b2b5-4ec62b3275b4\build3.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:2552
              • 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"
                7⤵
                • Creates scheduled task(s)
                PID:608
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {04DB0034-9B94-47CA-BF4C-A2840E1E8098} S-1-5-21-2444714103-3190537498-3629098939-1000:DJLAPDMX\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2548
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:3048
      • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:2624
        • 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"
          4⤵
          • Creates scheduled task(s)
          PID:2644

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    1KB

    MD5

    034ec3b760b9b922d37ec2d86820ebfa

    SHA1

    70ace12a56aa61e58f53ca2a3de71ff18966278d

    SHA256

    015e7444eb0fdf2cae85aef5c1d3d1aee98ed7e692c848ea45bfec3a35ccd821

    SHA512

    1257126cb3ffbe026affeb47918d546df4fd018b1ef53971bfa8ab53c67106d7dbbed03695340c8b5a446fec87ecd100f264966d934a0982586bc45a7c38188a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\4748633DC5731827D4B432DBAC7A3ECE

    Filesize

    854B

    MD5

    8d1040b12a663ca4ec7277cfc1ce44f0

    SHA1

    b27fd6bbde79ebdaee158211a71493e21838756b

    SHA256

    3086094d4198a5bbd12938b0d2d5f696c4dfc77e1eae820added346a59aa8727

    SHA512

    610c72970856ef7a316152253f7025ac11635078f1aea7b84641715813792374d2447b1002f1967d62b24073ee291b3e4f3da777b71216a30488a5d7b6103ac1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    410B

    MD5

    ff483fd6206648b0657e24218c6bffb2

    SHA1

    c8e29d29301a5926f116a9f975adb70c31a48ca3

    SHA256

    01ab307a07a83e17c09f3d7c399bce66e7c218c51107bb8eb03abf132116f9b4

    SHA512

    e9210bb71c37d5dc9772af952c2ba9f1d1cb3be4d2e5137392824cbcb1a7a3e3664f261d7384e69b8ae62205039630159af7ac9cfc79e5b293e74ca1718d75df

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\4748633DC5731827D4B432DBAC7A3ECE

    Filesize

    188B

    MD5

    83b44f1cb8f519a98820b17e738f2285

    SHA1

    5b199afedb0b21701ce4fc4750770718d8312274

    SHA256

    f4bf2f38ee1d68c71d57fd6734e22013b5440e3e500b64262d836625d8b500cd

    SHA512

    0a48b67e3fa1e1c1780fe296afe6ea52456b5f692aa0dd38ddb852c02565a7e53d22c5b49c559a0d18117e9c60a4954f81bf31f86fe66741d1683e9c9c2f23f5

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    77f6986f55ce43647d2d982fbcb80839

    SHA1

    e91bdcf6293a5c6d816921b77d80158dcaa2039b

    SHA256

    0471860ede8e1c0cd4d1626a3cb504dcb9ca2fc1fa38a2443f2342e0fa41883a

    SHA512

    4ecb0296dbd6c7061502fe45ad196087b3447213c54a6357a9c6e0c231013a8b182dc0cd9d4e813b71b9f3198f3a4bb0523724d63cc3490a0782bab9400c4422

  • C:\Users\Admin\AppData\Local\Temp\CabEB2A.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\a146bc7e-077f-4f3d-8e57-d7434f7e6be1\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

    Filesize

    701KB

    MD5

    6741d5aef031c6b1e51f386fefc1225e

    SHA1

    95ea397aed18143bc18da02c21e693c44e373f90

    SHA256

    2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9

    SHA512

    90034da6a496dfcf2b7227b2aa585983cbe80f9a69586743eb219035c1bdab59eaa912139de0e576db2194383f1c70e16042736c1a593fd7e7a4ea93d515df5d

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

    Filesize

    8KB

    MD5

    8b7c2877951d0098abecc9c1bf5ae31a

    SHA1

    e9a12360ae7e9630ebd6d9f0fa9d9f5958578351

    SHA256

    7670cd34b6e2142cf9a813ce536f24fa8fb9e91d3e46b38d9904a5ab83b31f3a

    SHA512

    8d32b65ee1c0ef6d1428ca580cffde87ceb500643307d077f0621f4d9285c0a0d12d46554b7f98190145bba0cb8aa158bd76fae2f21025d0062e687c04f12444

  • \Users\Admin\AppData\Local\6ab5ffbf-d723-4730-b2b5-4ec62b3275b4\build3.exe

    Filesize

    299KB

    MD5

    41b883a061c95e9b9cb17d4ca50de770

    SHA1

    1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

    SHA256

    fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

    SHA512

    cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

  • memory/852-7-0x00000000002F0000-0x0000000000382000-memory.dmp

    Filesize

    584KB

  • memory/852-0-0x00000000002F0000-0x0000000000382000-memory.dmp

    Filesize

    584KB

  • memory/852-3-0x00000000006A0000-0x00000000007BB000-memory.dmp

    Filesize

    1.1MB

  • memory/852-1-0x00000000002F0000-0x0000000000382000-memory.dmp

    Filesize

    584KB

  • memory/1652-155-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-154-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-149-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-150-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-128-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1652-143-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1972-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1972-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1972-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1972-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1972-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2416-33-0x0000000001CA0000-0x0000000001D32000-memory.dmp

    Filesize

    584KB

  • memory/2416-44-0x0000000001CA0000-0x0000000001D32000-memory.dmp

    Filesize

    584KB

  • memory/2472-170-0x00000000001B0000-0x00000000001B4000-memory.dmp

    Filesize

    16KB

  • memory/2472-169-0x0000000000250000-0x0000000000350000-memory.dmp

    Filesize

    1024KB

  • memory/2552-168-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2552-172-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2552-175-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2552-177-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/3048-193-0x00000000008C0000-0x00000000009C0000-memory.dmp

    Filesize

    1024KB