Analysis

  • max time kernel
    142s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    25-07-2024 17:26

General

  • Target

    232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b.exe

  • Size

    834KB

  • MD5

    20741efb92edd220de77c9e7e59b6c29

  • SHA1

    61091ff70842a709c0283253be9b0e473bfa1054

  • SHA256

    232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b

  • SHA512

    fb66a40b9e65c73f525dcf4ca9c8a3eb3411aa4bee584fc6138ab4a8fba88cdc9cfeec26fe6c3dc38d18d6a8a8af550471d1bb6ef087433124c3898fb4b8f691

  • SSDEEP

    12288:e8K0AkD/lct8fzQooO2Q8u62R0qP/8WnFJ7VVrEXrS/8rZ5qtLgq0nFcjV7u:tu+OteztV8AdlY7Algq0nFJ

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .iiof

  • offline_id

    rpx4UUTYZiAR5omq187UvM233jloVHyJUkA8s3t1

  • 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-hsmBOFHh66 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: 0410Jsfkjn

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 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

  • Executes dropped EXE 1 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 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 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b.exe
    "C:\Users\Admin\AppData\Local\Temp\232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:344
    • C:\Users\Admin\AppData\Local\Temp\XrmUTb.exe
      C:\Users\Admin\AppData\Local\Temp\XrmUTb.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2704
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\41b81ab3.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2656
    • C:\Users\Admin\AppData\Local\Temp\232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b.exe
      "C:\Users\Admin\AppData\Local\Temp\232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2744
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\6bbb4c64-2f37-4419-a5b5-ae6a2e8164fb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:348
      • C:\Users\Admin\AppData\Local\Temp\232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b.exe
        "C:\Users\Admin\AppData\Local\Temp\232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2544
        • C:\Users\Admin\AppData\Local\Temp\232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b.exe
          "C:\Users\Admin\AppData\Local\Temp\232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2236

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

    a6413a79d364a6086cf8320116c9bbda

    SHA1

    246f167070adf641c9f3b812a228d2ba01409997

    SHA256

    8d65315fbb514872f5d56d130b3d915187b64946c0114e4349a376b397712b59

    SHA512

    8311183bf4f09905253a7ef51b26e4224f3e8dd5da9189e081be480939dae142d4ab4af944930c5c7e47473fe56af0b0adcc05a048e2a77cb717825f46d367eb

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

    Filesize

    342B

    MD5

    539bd6d6a22518af81b031deff2ef4b0

    SHA1

    b1cafcb5a1119d28420984682239c4d0b1f63fd7

    SHA256

    6f99fd703b139c6ac1eacfa420d89c5a005eb5461100088488fe3a8d71efda71

    SHA512

    841bc00bb6c1b14cc42d58a1f82aeb138ea9c04208b10ae5f56fe84f993a706441587e881876696ff8a7a53468b440f6a857c44bc776d56885be99fcf382aeda

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

    Filesize

    170B

    MD5

    2274e146aa5c44e68e29b6973d7af757

    SHA1

    673c67387e3a6ca46416dcbc029dce7d65a0455f

    SHA256

    73363323a6519c0857df872f64d96e8af43f9817de9d1568f8c7c461087f0437

    SHA512

    e7512b1699a5dd763aa51c2f8cc461ae2fa7e7f7c2232b5360737299a1cfc268c995875dc84c89d2fcd13deadf12073fcdd2acd281d408db4fc795ddcaa4968e

  • C:\Users\Admin\AppData\Local\6bbb4c64-2f37-4419-a5b5-ae6a2e8164fb\232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b.exe

    Filesize

    834KB

    MD5

    20741efb92edd220de77c9e7e59b6c29

    SHA1

    61091ff70842a709c0283253be9b0e473bfa1054

    SHA256

    232d25948db02a80f05a71382a8fda0000fb08df82778f30322d5844ce7d167b

    SHA512

    fb66a40b9e65c73f525dcf4ca9c8a3eb3411aa4bee584fc6138ab4a8fba88cdc9cfeec26fe6c3dc38d18d6a8a8af550471d1bb6ef087433124c3898fb4b8f691

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\NIUC9X25\k2[1].rar

    Filesize

    4B

    MD5

    d3b07384d113edec49eaa6238ad5ff00

    SHA1

    f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

    SHA256

    b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

    SHA512

    0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

  • C:\Users\Admin\AppData\Local\Temp\1C851CF3.exe

    Filesize

    4B

    MD5

    20879c987e2f9a916e578386d499f629

    SHA1

    c7b33ddcc42361fdb847036fc07e880b81935d5d

    SHA256

    9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

    SHA512

    bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

  • C:\Users\Admin\AppData\Local\Temp\41b81ab3.bat

    Filesize

    187B

    MD5

    965e766b6871c9c57dab519615d67367

    SHA1

    00fbe5cdce7111f4747c2d01014c5835d3fd9c55

    SHA256

    6e1366d59804b3a47285b525e58ffe13327754a1675cf1c81e4f6edbb843d7da

    SHA512

    b90b8f3895fca91c40da94b4f805bf43d9735e90948183430fe1815d6a702f3a367b78f305ae899bea084d15ad9c3038862bd758661fdef4e396d47543a59d12

  • C:\Users\Admin\AppData\Local\Temp\Cab2C7D.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

    Filesize

    15KB

    MD5

    f7d21de5c4e81341eccd280c11ddcc9a

    SHA1

    d4e9ef10d7685d491583c6fa93ae5d9105d815bd

    SHA256

    4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

    SHA512

    e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

  • memory/344-20-0x0000000000400000-0x0000000000502000-memory.dmp

    Filesize

    1.0MB

  • memory/344-21-0x0000000001E00000-0x0000000001F1B000-memory.dmp

    Filesize

    1.1MB

  • memory/344-18-0x0000000001D60000-0x0000000001DF2000-memory.dmp

    Filesize

    584KB

  • memory/344-9-0x0000000000400000-0x0000000000502000-memory.dmp

    Filesize

    1.0MB

  • memory/344-10-0x00000000009D0000-0x00000000009D9000-memory.dmp

    Filesize

    36KB

  • memory/344-11-0x00000000009D0000-0x00000000009D9000-memory.dmp

    Filesize

    36KB

  • memory/344-106-0x0000000001E00000-0x0000000001F1B000-memory.dmp

    Filesize

    1.1MB

  • memory/2236-87-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-105-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-66-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-124-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-120-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-122-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-88-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2236-111-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2544-68-0x0000000002170000-0x0000000002272000-memory.dmp

    Filesize

    1.0MB

  • memory/2544-57-0x0000000000400000-0x0000000000502000-memory.dmp

    Filesize

    1.0MB

  • memory/2544-67-0x0000000000400000-0x0000000000502000-memory.dmp

    Filesize

    1.0MB

  • memory/2704-103-0x00000000009D0000-0x00000000009D9000-memory.dmp

    Filesize

    36KB

  • memory/2704-12-0x00000000009D0000-0x00000000009D9000-memory.dmp

    Filesize

    36KB

  • memory/2744-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2744-107-0x0000000003A50000-0x0000000003B52000-memory.dmp

    Filesize

    1.0MB

  • memory/2744-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2744-16-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2744-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2744-56-0x0000000003A50000-0x0000000003B52000-memory.dmp

    Filesize

    1.0MB

  • memory/2744-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB