Analysis

  • max time kernel
    142s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-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 14 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\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe
    "C:\Users\Admin\AppData\Local\Temp\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2276
    • C:\Users\Admin\AppData\Local\Temp\RxocXt.exe
      C:\Users\Admin\AppData\Local\Temp\RxocXt.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2744
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\5c481be3.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2972
    • C:\Users\Admin\AppData\Local\Temp\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe
      "C:\Users\Admin\AppData\Local\Temp\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2708
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\93f4654a-deac-4425-b47a-2a64dae780c1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2848
      • 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:2244
        • 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:2032

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

    a07bddb00786e7d3703b7a5ae4656315

    SHA1

    ef172554bf5bb0a636b987f48a7dc14f1998ae85

    SHA256

    d2a9ceec18d929888ce042fa7febe52772156931303d42e99ad73e3620e57090

    SHA512

    33f445f1e6d69927cb23ed2c3d4948e1e9faebb44f0344a248f5533c3efa33948acacb549f95f31ee05ec73c6976def92e6e8588379f0a15e8e9c83b82cee897

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

    Filesize

    342B

    MD5

    ea1adaecb6266dc48072e03bd9a3f404

    SHA1

    b568034c29421f2d7875a0907f6f46a7115eae65

    SHA256

    4ae3afc678c5b53579d8967eceb31d56ed555b3754b9aff3e7a9253db51a608a

    SHA512

    d547f157b26ec36503302c5e46f58a964823f6f7c1985053936f63c35b39cf1e1473dc914e7ae58a824903f9dd4efe6f8169a7da5f017bba4e3379203cf58eb3

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

    Filesize

    170B

    MD5

    e20467a06c16a49676d62ea090b4ec10

    SHA1

    f1eda57f95dbcf61c30dbf3a68f93ed620837d1b

    SHA256

    9727b06719833b30df17bd06b63a52575774d249e3e06742ea6c5d44d97c519b

    SHA512

    3a372771c0b871e0a78b1b28bda73893347dedb9a79776689a138277e28a11fa87c4ef75d53a2eecf7dcbb4d6d4917ce1d54c4bb71c8b3e2b138de17c0aed53b

  • C:\Users\Admin\AppData\Local\93f4654a-deac-4425-b47a-2a64dae780c1\2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a.exe

    Filesize

    800KB

    MD5

    a459c876f20b2ab552a0945256624310

    SHA1

    0a540996512806b795b6aaa11e3eee8424a59495

    SHA256

    2e47721a4fb2c1e36520d287b3251a9ea2b688de1f36541e8bc06c169c2b410a

    SHA512

    8ba8b10afe964897ae523426ad859d4d5bdb99accfa6c4e1138b60691764fa7013d304ce17c2835d2c20c98e218a40585a85bd5d5b427e49329514c1fbd6373c

  • C:\Users\Admin\AppData\Local\Temp\2CD1031B.exe

    Filesize

    4B

    MD5

    d3b07384d113edec49eaa6238ad5ff00

    SHA1

    f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

    SHA256

    b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

    SHA512

    0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

  • C:\Users\Admin\AppData\Local\Temp\2CD1031B.exe

    Filesize

    4B

    MD5

    20879c987e2f9a916e578386d499f629

    SHA1

    c7b33ddcc42361fdb847036fc07e880b81935d5d

    SHA256

    9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

    SHA512

    bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

  • C:\Users\Admin\AppData\Local\Temp\5c481be3.bat

    Filesize

    187B

    MD5

    7e2d4086bca27ee3c4aa495b9c8de35f

    SHA1

    924b06fc927c85f8f58040f0423f6b7184f8aecc

    SHA256

    fc160706e1a46c126e3b32184bb174e75a225c860a08ac5215c07fe4ba2ec221

    SHA512

    e2774e0ea29361a6b99d7e5d415aeef788340d47cf799c5e74fb7712ba88870cd4eef93f2c02d43d1722136f86a409b2a49ef6d8cca817ea32f7e7957bec1b3d

  • C:\Users\Admin\AppData\Local\Temp\CabFDA0.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

    Filesize

    15KB

    MD5

    f7d21de5c4e81341eccd280c11ddcc9a

    SHA1

    d4e9ef10d7685d491583c6fa93ae5d9105d815bd

    SHA256

    4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

    SHA512

    e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

  • memory/2032-99-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2032-73-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2032-72-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2032-104-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2032-105-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2032-102-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2032-106-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2032-91-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2032-57-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2244-58-0x00000000020D0000-0x00000000021C5000-memory.dmp

    Filesize

    980KB

  • memory/2244-54-0x0000000000400000-0x00000000004F5000-memory.dmp

    Filesize

    980KB

  • memory/2244-53-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2244-59-0x0000000000400000-0x00000000004F5000-memory.dmp

    Filesize

    980KB

  • memory/2276-28-0x0000000001DA0000-0x0000000001EBB000-memory.dmp

    Filesize

    1.1MB

  • memory/2276-1-0x0000000000400000-0x00000000004F5000-memory.dmp

    Filesize

    980KB

  • memory/2276-9-0x0000000000220000-0x0000000000229000-memory.dmp

    Filesize

    36KB

  • memory/2276-4-0x0000000000220000-0x0000000000229000-memory.dmp

    Filesize

    36KB

  • memory/2276-29-0x0000000000400000-0x00000000004F5000-memory.dmp

    Filesize

    980KB

  • memory/2276-30-0x0000000002140000-0x0000000002235000-memory.dmp

    Filesize

    980KB

  • memory/2276-21-0x00000000002B0000-0x0000000000341000-memory.dmp

    Filesize

    580KB

  • memory/2276-26-0x00000000002B0000-0x0000000000341000-memory.dmp

    Filesize

    580KB

  • memory/2708-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2708-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2708-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2708-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2708-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2708-49-0x0000000003B10000-0x0000000003C05000-memory.dmp

    Filesize

    980KB

  • memory/2744-89-0x0000000001210000-0x0000000001219000-memory.dmp

    Filesize

    36KB

  • memory/2744-11-0x0000000001210000-0x0000000001219000-memory.dmp

    Filesize

    36KB