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Analysis

  • max time kernel
    120s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    03/08/2023, 09:16

General

  • Target

    ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe

  • Size

    101KB

  • MD5

    c24b15ddcf5f38b957e29cbb770513b6

  • SHA1

    776d4d0ebaaa3ad42ca0bea26e55efe032d64922

  • SHA256

    ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c

  • SHA512

    7dc315b2981d7b9bb61967541119c76a6ffec913c20093a2a0f94dcb52d7b49f087afe406549254ab969ec451bfa66158ce38ce16b33076d8fe0aba3d447b6b8

  • SSDEEP

    1536:gt1DlqVQsb7O+qgC23pG8XIXNe6Mv5io63RG8jpkcF6YPxMsJPxj:ggrO+qh2pXye6MBN63RpjpZFBxMExj

Malware Config

Signatures

  • FatalRat

    FatalRat is a modular infostealer family written in C++ first appearing in June 2021.

  • Fatal Rat payload 2 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 51 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe
    "C:\Users\Admin\AppData\Local\Temp\ab6a39b8f6567f05c7f1929de047a9a5bd0dc4243e0c32b11c38856d9f5b991c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe"
      2⤵
      • Blocklisted process makes network request
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2684
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2244 -s 808
      2⤵
      • Program crash
      PID:2052
  • C:\Windows\Vwxyab.exe
    C:\Windows\Vwxyab.exe
    1⤵
    • Executes dropped EXE
    PID:2936

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Windows\Vwxyab.exe

    Filesize

    295KB

    MD5

    ad7b9c14083b52bc532fba5948342b98

    SHA1

    ee8cbf12d87c4d388f09b4f69bed2e91682920b5

    SHA256

    17f746d82695fa9b35493b41859d39d786d32b23a9d2e00f4011dec7a02402ae

    SHA512

    e12aad20c824187b39edb3c7943709290b5ddbf1b4032988db46f2e86da3cf7e7783f78c82e4dc5da232f666b8f9799a260a1f8e2694eb4d0cdaf78da710fde1

  • memory/2244-57-0x0000000003470000-0x0000000003614000-memory.dmp

    Filesize

    1.6MB

  • memory/2244-80-0x0000000003470000-0x0000000003614000-memory.dmp

    Filesize

    1.6MB

  • memory/2684-66-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2684-60-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB

  • memory/2684-64-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB

  • memory/2684-62-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB

  • memory/2684-68-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB

  • memory/2684-70-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB

  • memory/2684-71-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB

  • memory/2684-72-0x0000000010000000-0x000000001002A000-memory.dmp

    Filesize

    168KB

  • memory/2684-59-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB

  • memory/2684-58-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB

  • memory/2684-81-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB