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Analysis

  • max time kernel
    143s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    01/06/2024, 00:02

General

  • Target

    8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe

  • Size

    92KB

  • MD5

    984add71480cf5c831bc05a06e650f18

  • SHA1

    f1efb5c08c2d43aefcc0bfe5535eea6ba3821b63

  • SHA256

    8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32

  • SHA512

    b644cf72c7f8ee18d81fdaa4b3088d30658e03931d26b28ec468c33067324671eb1347aea2125aaabfaf5fa7846797848877dcb667af438a493de63b81578cf7

  • SSDEEP

    1536:1MIPgEm56wnbkKC2ZyBJU066lwLCRVEB+nR/y8cmNrEIviCOzuajkrDl9HNSi:11PgEOng1d66jRVa+n4NmNNouukrD7HI

Malware Config

Signatures

  • Detects executables containing base64 encoded User Agent 4 IoCs
  • UPX dump on OEP (original entry point) 7 IoCs
  • Blocklisted process makes network request 10 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 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.

  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Kills process with taskkill 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe
    "C:\Users\Admin\AppData\Local\Temp\8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1368
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\fwvxg.exe "C:\Users\Admin\AppData\Local\Temp\8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2748
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2248
      • C:\Users\Admin\AppData\Local\Temp\fwvxg.exe
        C:\Users\Admin\AppData\Local\Temp\\fwvxg.exe "C:\Users\Admin\AppData\Local\Temp\8572a8f4e9f1b4d6655a12f761558adf04ec5086d8d5304052cc9aa041186d32.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2524
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\eadgfbde\awogob.wga",crc32 C:\Users\Admin\AppData\Local\Temp\fwvxg.exe
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2672
          • \??\c:\windows\SysWOW64\taskkill.exe
            taskkill /f /im attrib.exe
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:2520

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \??\c:\eadgfbde\awogob.wga

    Filesize

    57KB

    MD5

    2f53f49e01f09d6e6064871eec1955cd

    SHA1

    a6e1a6e5c2080d0fb2f7a872e3902a8a4a1a9b5f

    SHA256

    964e4dd2532d540bb61d3c7ccc833f2358d8cd6b2eabc3a2d51183a18b59f82d

    SHA512

    2cb98030c3df7417c04f796f78f23f96d381871d9c7ae4a14116764e915b2e2f56b9b3a6fb76fedc50a17788de9538fc7954a7b73bf17e4be43e1fc1a06bc218

  • \Users\Admin\AppData\Local\Temp\fwvxg.exe

    Filesize

    92KB

    MD5

    218513316f2446841246e7ddbaafce00

    SHA1

    855b8b42349fcf9d41c6f47bc339ff66d60908a5

    SHA256

    e12681fe42c8e51d9880e9a69d0ecfe662cfdeac5a1742ccbcff38fda341ebe1

    SHA512

    4d6c15401a2edbf6694e4669e101fa7f749c56f8fdba6f581bce2f222c41cdd02a5afbdd0b9e47546d7db35260fe95d14b216d1efee6842d5f048a6facd3a8fb

  • memory/1368-0-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/1368-1-0x00000000001D0000-0x00000000001D1000-memory.dmp

    Filesize

    4KB

  • memory/1368-3-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/2524-11-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/2524-9-0x0000000000290000-0x0000000000291000-memory.dmp

    Filesize

    4KB

  • memory/2672-14-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2672-15-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2672-19-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2672-21-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2672-22-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2748-8-0x00000000001B0000-0x00000000001D8000-memory.dmp

    Filesize

    160KB