Analysis

  • max time kernel
    121s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    12-06-2024 23:42

General

  • Target

    2024-06-12_f2ce67d38e837bcfd5590eb3ef5780f2_bkransomware.exe

  • Size

    96KB

  • MD5

    f2ce67d38e837bcfd5590eb3ef5780f2

  • SHA1

    81b51cdaa8203e6bfa7c02924b27233a9473a643

  • SHA256

    c851f928e60b89904940b6631194cfb79973013cfae63424fed961929de265be

  • SHA512

    6b106c572c7ea7b772457d5be3c8ed85f3ef92db64ecd920ead43051d69c1194acbf0c4805faf1a99e474db4cd61cbb7cfc6350efd22adece60098dd747ec5b5

  • SSDEEP

    1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT/RbZ3TZ3Yp:ZRpAyazIliazT/RbR130

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-12_f2ce67d38e837bcfd5590eb3ef5780f2_bkransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-12_f2ce67d38e837bcfd5590eb3ef5780f2_bkransomware.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2076
    • C:\Users\Admin\AppData\Local\Temp\tDUxEbe8PEocMst.exe
      C:\Users\Admin\AppData\Local\Temp\tDUxEbe8PEocMst.exe
      2⤵
      • Executes dropped EXE
      PID:2864
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:2012

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tDUxEbe8PEocMst.exe

    Filesize

    25KB

    MD5

    abbd49c180a2f8703f6306d6fa731fdc

    SHA1

    d63f4bfe7f74936b2fbace803e3da6103fbf6586

    SHA256

    5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

    SHA512

    290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

  • C:\Users\Admin\AppData\Local\Temp\tDUxEbe8PEocMst.exe

    Filesize

    96KB

    MD5

    67b95bddfb19a7874b5175dd08dea3ae

    SHA1

    4d8a69e63debb43012048bdddcdab889ddbd858f

    SHA256

    437b80f8d35fad3b40fab875d0faf16bbaa050ff798b5908b41dddc451cfcb8e

    SHA512

    3df4b665bdf387f0de928c472c11deaba317d26325de11cbcd481598e3a7f74400b89ec10443d2dbea2e30bac993b6cd57acc38fc16a0275ae7314f2f0a727e3

  • C:\Windows\CTS.exe

    Filesize

    71KB

    MD5

    f9d4ab0a726adc9b5e4b7d7b724912f1

    SHA1

    3d42ca2098475924f70ee4a831c4f003b4682328

    SHA256

    b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

    SHA512

    22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

  • memory/2864-15-0x0000000000400000-0x000000000040D000-memory.dmp

    Filesize

    52KB