Analysis

  • max time kernel
    144s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-07-2024 04:07

General

  • Target

    2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe

  • Size

    800KB

  • MD5

    a459c876f20b2ab552a0945256624310

  • SHA1

    0a540996512806b795b6aaa11e3eee8424a59495

  • SHA256

    2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a

  • SHA512

    8ba8b10afe964897ae523426ad859d4d5bdb99accfa6c4e1138b60691764fa7013d304ce17c2835d2c20c98e218a40585a85bd5d5b427e49329514c1fbd6373c

  • SSDEEP

    24576:FnjB/kSk7V/zmcAJXtUjr5PvWuuE6nM/:BVXt0+M6M

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes
  • extension

    .kkia

  • offline_id

    dYUDKE4rrBmSPsf8srHMsyP40jle9uyxDDCfdxt1

  • payload_url

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

    http://fuyt.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-NdDG3HIUZp 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: 0425Jsfkjn

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 16 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 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 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe
    "C:\Users\Admin\AppData\Local\Temp\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3152
    • C:\Users\Admin\AppData\Local\Temp\RxocXt.exe
      C:\Users\Admin\AppData\Local\Temp\RxocXt.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4816
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\411d1864.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4988
    • C:\Users\Admin\AppData\Local\Temp\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe
      "C:\Users\Admin\AppData\Local\Temp\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2760
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\8c7840db-bb44-4c30-ad4b-cc1deff2ee25" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:5084
      • C:\Users\Admin\AppData\Local\Temp\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe
        "C:\Users\Admin\AppData\Local\Temp\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1468
        • C:\Users\Admin\AppData\Local\Temp\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe
          "C:\Users\Admin\AppData\Local\Temp\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:3968

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    1KB

    MD5

    7fb5fa1534dcf77f2125b2403b30a0ee

    SHA1

    365d96812a69ac0a4611ea4b70a3f306576cc3ea

    SHA256

    33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

    SHA512

    a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    222dcfb7efe2f11f385e60b9eb854dd2

    SHA1

    d4ffec6a8303afca521392f7d39bd81fa984170a

    SHA256

    99d08db8f6b7c7a940ccad164a975fcb29da446d7d12b90abbef2adf129fea9b

    SHA512

    6eeca57f22991b9c6c9a88b4830b86683a1080b303d126b507e1fd9768757e1da2b4f1226a5d86b0f76205c3581713aa36cd6ce072fb40d952b954dedec2a10a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    170B

    MD5

    ce1010d5a7803019f0f366522ba5efa0

    SHA1

    bd770c4dabc53b6f87ce932628271c9ed5f56ce8

    SHA256

    be9a79603a36eb20599e2fa81b7a0e826c9d176cb2960340c1cc131371f9f89d

    SHA512

    4227ead2e87db75ba6703e767a02460aea5ac1185c37c5f17b02edc08a38dfd221cf9e3222eef155c62ce2b36a3e55e286511056baa5c4cc3a089de368783ec1

  • C:\Users\Admin\AppData\Local\8c7840db-bb44-4c30-ad4b-cc1deff2ee25\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe

    Filesize

    800KB

    MD5

    a459c876f20b2ab552a0945256624310

    SHA1

    0a540996512806b795b6aaa11e3eee8424a59495

    SHA256

    2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a

    SHA512

    8ba8b10afe964897ae523426ad859d4d5bdb99accfa6c4e1138b60691764fa7013d304ce17c2835d2c20c98e218a40585a85bd5d5b427e49329514c1fbd6373c

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\A4F1OTIC\k2[1].rar

    Filesize

    4B

    MD5

    d3b07384d113edec49eaa6238ad5ff00

    SHA1

    f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

    SHA256

    b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

    SHA512

    0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

  • C:\Users\Admin\AppData\Local\Temp\1CED3AEC.exe

    Filesize

    4B

    MD5

    20879c987e2f9a916e578386d499f629

    SHA1

    c7b33ddcc42361fdb847036fc07e880b81935d5d

    SHA256

    9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

    SHA512

    bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

  • C:\Users\Admin\AppData\Local\Temp\411d1864.bat

    Filesize

    187B

    MD5

    411803ce7b67bddc8c9f4944280d79f3

    SHA1

    db1d0c693d8954f46a3c731a9578fe528977852e

    SHA256

    051579a80e5ada62dd1de69954ded5565b3925e411370923c3324e10f04f9c99

    SHA512

    4c079f50837ad0ed00b2207b7d75103db318c54094f1ff2ed0664c91bb5400175d17a9143914646f807fc5b021a10b737d971699c47c7530499e7a63cebb791c

  • C:\Users\Admin\AppData\Local\Temp\RxocXt.exe

    Filesize

    15KB

    MD5

    f7d21de5c4e81341eccd280c11ddcc9a

    SHA1

    d4e9ef10d7685d491583c6fa93ae5d9105d815bd

    SHA256

    4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

    SHA512

    e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

  • memory/1468-71-0x0000000000400000-0x00000000004F5000-memory.dmp

    Filesize

    980KB

  • memory/1468-63-0x0000000000400000-0x00000000004F5000-memory.dmp

    Filesize

    980KB

  • memory/2760-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-62-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-16-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3152-18-0x0000000000400000-0x00000000004F5000-memory.dmp

    Filesize

    980KB

  • memory/3152-0-0x0000000000400000-0x00000000004F5000-memory.dmp

    Filesize

    980KB

  • memory/3152-15-0x0000000000660000-0x00000000006FC000-memory.dmp

    Filesize

    624KB

  • memory/3152-17-0x00000000021A0000-0x00000000022BB000-memory.dmp

    Filesize

    1.1MB

  • memory/3968-91-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3968-70-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3968-76-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3968-77-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3968-78-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3968-82-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3968-93-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3968-94-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3968-95-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3968-96-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4816-5-0x0000000000FD0000-0x0000000000FD9000-memory.dmp

    Filesize

    36KB

  • memory/4816-66-0x0000000000FD0000-0x0000000000FD9000-memory.dmp

    Filesize

    36KB