Analysis

  • max time kernel
    149s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    27/01/2024, 06:55

General

  • Target

    7990fa877fec785fe61a58c3c7a5ab76.exe

  • Size

    726KB

  • MD5

    7990fa877fec785fe61a58c3c7a5ab76

  • SHA1

    deb2f3da015e94c6d4ef3ae14dd2e0df801d4686

  • SHA256

    27f13dee7cc319ab79efc4a3597e33a513cbd9457ccd570db534a730448b6dfd

  • SHA512

    4b92f1c133098cfd7ad8a3610cd6d74416257e3912ceec37d8a3916a7c62861562ff9f143d31833df711f5c8dceff09c69177e1daea2f1d8511c6fe7ba6d95f1

  • SSDEEP

    12288:MkEhD8/cHIH9L7kT05u3s01AykMjc6hDgiNFjTZtvOtZfI2weRjsxZBOYti:MkEB8tLgQ5A1Ay5c6BgiNFPWtJweWxti

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/fhsgtsspen6/get.php

Attributes
  • extension

    .reqg

  • offline_id

    ioYmb0jtMMtue7xjmkS3WQWGWLR8FTQhb2giQtt1

  • payload_url

    http://securebiz.org/dl/build2.exe

    http://astdg.top/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-jTbSQT8ApY 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: 0324gDrgo

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Executes dropped EXE 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 4 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).

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7990fa877fec785fe61a58c3c7a5ab76.exe
    "C:\Users\Admin\AppData\Local\Temp\7990fa877fec785fe61a58c3c7a5ab76.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2356
    • C:\Users\Admin\AppData\Local\Temp\7990fa877fec785fe61a58c3c7a5ab76.exe
      "C:\Users\Admin\AppData\Local\Temp\7990fa877fec785fe61a58c3c7a5ab76.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2180
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\62afaed8-359a-4c11-a509-b748af201d71" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2468
      • C:\Users\Admin\AppData\Local\Temp\7990fa877fec785fe61a58c3c7a5ab76.exe
        "C:\Users\Admin\AppData\Local\Temp\7990fa877fec785fe61a58c3c7a5ab76.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2440
        • C:\Users\Admin\AppData\Local\Temp\7990fa877fec785fe61a58c3c7a5ab76.exe
          "C:\Users\Admin\AppData\Local\Temp\7990fa877fec785fe61a58c3c7a5ab76.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          PID:1180
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {3B241CAB-06BE-4AB4-9E50-8002A2895614} S-1-5-21-3470981204-343661084-3367201002-1000:GLTGRJAG\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Users\Admin\AppData\Local\62afaed8-359a-4c11-a509-b748af201d71\7990fa877fec785fe61a58c3c7a5ab76.exe
      C:\Users\Admin\AppData\Local\62afaed8-359a-4c11-a509-b748af201d71\7990fa877fec785fe61a58c3c7a5ab76.exe --Task
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1216
      • C:\Users\Admin\AppData\Local\62afaed8-359a-4c11-a509-b748af201d71\7990fa877fec785fe61a58c3c7a5ab76.exe
        C:\Users\Admin\AppData\Local\62afaed8-359a-4c11-a509-b748af201d71\7990fa877fec785fe61a58c3c7a5ab76.exe --Task
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:3060

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          1KB

          MD5

          117581c8a2ff4fce10d77d2f81dd0cdc

          SHA1

          a0fbeeef3c720485767906ddf3d699f78bd3a692

          SHA256

          14924e43f9d37b1bfca5c3d878e9ad833b26ce047840565801eb2aa2257770e2

          SHA512

          4230d5299fb961cb1d2ea3bd971e3df2cc3bdd10ff4331e672bfb4ab49a68f757df0d433dc0cfc8f07a6b6e0b51166cb571eefa93eb9a41f98197fcce5eec9a8

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

          Filesize

          65KB

          MD5

          ac05d27423a85adc1622c714f2cb6184

          SHA1

          b0fe2b1abddb97837ea0195be70ab2ff14d43198

          SHA256

          c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

          SHA512

          6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

          Filesize

          724B

          MD5

          8202a1cd02e7d69597995cabbe881a12

          SHA1

          8858d9d934b7aa9330ee73de6c476acf19929ff6

          SHA256

          58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

          SHA512

          97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357

          Filesize

          1KB

          MD5

          a266bb7dcc38a562631361bbf61dd11b

          SHA1

          3b1efd3a66ea28b16697394703a72ca340a05bd5

          SHA256

          df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

          SHA512

          0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

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

          Filesize

          410B

          MD5

          e07af89ea78e522a9a6c0c4814ba09a6

          SHA1

          d31d566272627c95c6ad4e0d4ebed12556ebfdda

          SHA256

          5c44c936eb6fb2acaee6df251729f7a2e6ddc625aee18590daef9585deb36dc1

          SHA512

          9fb5a2ed52ceaa517820ae30cc9e11c68b4f609aeb5a25da95df336cc191ef9d6f5a44099b6323eb7c7e3531f73186a0e837e199ca7e222cabd3a13785704699

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

          Filesize

          344B

          MD5

          1fcacf2a3ee02ed1a62b7a5dd441b3d1

          SHA1

          d3b3eb9b4783a144bad89ee7bf8f2ad5638c4566

          SHA256

          174518b021d3c4683f119e7ba25d44173ee73c6e3a282525e087f3c1ed6bf41b

          SHA512

          400fc211d793c4204d4dfe31f3d1efefd6d89b5a390a9d79f238e49adfd7bb0019240d18dd3771b8cef6650f8cdc3046c6689cf927248c40223c3652d36ec098

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

          Filesize

          392B

          MD5

          443ce6decc95bb44db5b00c5fdaa6f8c

          SHA1

          8d19bb014d3634d94aa8b85aa15ae8c58fac9c8e

          SHA256

          238724813c58f7a076295105cd754f8dfc9b34518cdacefcb51e15274949eb1b

          SHA512

          ab49637a7c6377b62f6685132290fd18affe6716c83c0a399560ae425000d98d827bdaca7f3e196546202e160ebbf0e30c56057d5604b8c220f770aae0c38301

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

          Filesize

          242B

          MD5

          e7daa591cbedcea2f08093f8db37b1cc

          SHA1

          dc617f0a7ce3fa00edfdd63e354c5cca1657cbd2

          SHA256

          c6aba303f57de02bf6b4a874dd3850ef1c7a9f9007cb98e8e40cfe86c7e957b7

          SHA512

          064d8596e79117e6b2fb311dbd372599bd3bbfee065e7ec9aabe129aec1c0030db39ee8e125af83d4bbc6e12bc4e5d4cffc58b2fa5406ae941ed1552e08bfc02

        • C:\Users\Admin\AppData\Local\62afaed8-359a-4c11-a509-b748af201d71\7990fa877fec785fe61a58c3c7a5ab76.exe

          Filesize

          726KB

          MD5

          7990fa877fec785fe61a58c3c7a5ab76

          SHA1

          deb2f3da015e94c6d4ef3ae14dd2e0df801d4686

          SHA256

          27f13dee7cc319ab79efc4a3597e33a513cbd9457ccd570db534a730448b6dfd

          SHA512

          4b92f1c133098cfd7ad8a3610cd6d74416257e3912ceec37d8a3916a7c62861562ff9f143d31833df711f5c8dceff09c69177e1daea2f1d8511c6fe7ba6d95f1

        • C:\Users\Admin\AppData\Local\62afaed8-359a-4c11-a509-b748af201d71\7990fa877fec785fe61a58c3c7a5ab76.exe

          Filesize

          384KB

          MD5

          6f839c04290bbb081b060e59fa4eea67

          SHA1

          1efa2d709f710a03451463b7fbb97bf0d078055a

          SHA256

          f220fafd149021b85fda81afcc0c730dc530bfadf7930cc89f3fd222ccc85e6c

          SHA512

          3c1f6cdd7d7eec19b2ee333d71ae2faab7c564ac2e413b6525e14a694c43b82dfee65155275219f38749880b5ad6d6a78e12419df60dea784f889c7d812c5a93

        • C:\Users\Admin\AppData\Local\Temp\Tar390B.tmp

          Filesize

          171KB

          MD5

          9c0c641c06238516f27941aa1166d427

          SHA1

          64cd549fb8cf014fcd9312aa7a5b023847b6c977

          SHA256

          4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

          SHA512

          936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

        • memory/1180-83-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1180-54-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1180-55-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1180-74-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1180-82-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1180-80-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1180-81-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1180-78-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1180-75-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1180-73-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1216-96-0x0000000002CF0000-0x0000000002D82000-memory.dmp

          Filesize

          584KB

        • memory/1216-99-0x0000000002CF0000-0x0000000002D82000-memory.dmp

          Filesize

          584KB

        • memory/2180-8-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2180-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2180-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2180-7-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2180-46-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2356-4-0x0000000002E70000-0x0000000002F8B000-memory.dmp

          Filesize

          1.1MB

        • memory/2356-1-0x0000000000320000-0x00000000003B2000-memory.dmp

          Filesize

          584KB

        • memory/2356-0-0x0000000000320000-0x00000000003B2000-memory.dmp

          Filesize

          584KB

        • memory/2440-47-0x0000000002CF0000-0x0000000002D82000-memory.dmp

          Filesize

          584KB

        • memory/2440-49-0x0000000002CF0000-0x0000000002D82000-memory.dmp

          Filesize

          584KB

        • memory/3060-105-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3060-113-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB