Overview

overview

8

Static

static

3

c4ad96e3cf...1a.exe

windows7-x64

8

c4ad96e3cf...1a.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    22-08-2024 15:25

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General

  • Target

    c4ad96e3cfa611fa75633fab8eb5cd7edf6fa091e2a6c035b0d63c2bff0adb1a.exe

  • Size

    410KB

  • MD5

    f4994400fd5b59d4db14f1f862237bcd

  • SHA1

    91f179c43d2503acce3e8472e7899be2f4f43c1c

  • SHA256

    c4ad96e3cfa611fa75633fab8eb5cd7edf6fa091e2a6c035b0d63c2bff0adb1a

  • SHA512

    61494414a96f0a72026cb3eb9a0f85d49dbb7a73f63b344b635dd7af13bcda4af476525cd2a74ca439c159fbfc030c52a184e4088ab585f48278fc76fe691a90

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4K:gtRfJcNYFNm8UhlZGseK

Score
8/10
bootkitdiscoverypersistencespywarestealer

Malware Config

Signatures

  • Blocklisted process makes network request 10 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • 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.

    bootkitpersistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

    discovery
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c4ad96e3cfa611fa75633fab8eb5cd7edf6fa091e2a6c035b0d63c2bff0adb1a.exe
    "C:\Users\Admin\AppData\Local\Temp\c4ad96e3cfa611fa75633fab8eb5cd7edf6fa091e2a6c035b0d63c2bff0adb1a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3068
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dijrm.exe "C:\Users\Admin\AppData\Local\Temp\c4ad96e3cfa611fa75633fab8eb5cd7edf6fa091e2a6c035b0d63c2bff0adb1a.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:1992
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:1444
      • C:\Users\Admin\AppData\Local\Temp\dijrm.exe
        C:\Users\Admin\AppData\Local\Temp\\dijrm.exe "C:\Users\Admin\AppData\Local\Temp\c4ad96e3cfa611fa75633fab8eb5cd7edf6fa091e2a6c035b0d63c2bff0adb1a.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2548
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\zhmhetowd\myrzi.dll",Verify C:\Users\Admin\AppData\Local\Temp\dijrm.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)
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

2
T1012

Remote System Discovery

1
T1018

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\dijrm.exe
    Filesize

    411KB

    MD5

    874542c97d49657dfdef718518287b7a

    SHA1

    6a0efdc5eed59c97ecf032b951ad344ec9dcac0a

    SHA256

    8a5fd6f535160ee7d170a093745d51565262c527d35847ce7f879ac188141322

    SHA512

    f01469a6c7e95d30f223f49914eecd0cc4b9ff8d211738f7efbd346700fad0a655ce2a21a4b88bd250e403439ea11a313dcaf643f597fc326598d19af7de0364

    Download Submit

  • \??\c:\Program Files\zhmhetowd\myrzi.dll
    Filesize

    228KB

    MD5

    46aa528fb0858693a87f4a0c741a2fbe

    SHA1

    9a2a126bf4907dc019cfe0b54885b14477413885

    SHA256

    df321301d7db58b58cef4552fa6661b0f7e999a9fa03d0a3263248dd2a0f4458

    SHA512

    a4a73f174e0c67be7a9877efc7f6ef476b261fb6a581738457c7bd8948a13c9653349e80a48e5446e46ae339e2fe220059fde24cba44d9384c576c25eb4097ab

    Download Submit

  • memory/1992-5-0x00000000022D0000-0x0000000002334000-memory.dmp

    Filesize

    400KB

    Download

  • memory/2176-12-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

    Download

  • memory/2176-16-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

    Download

  • memory/2176-17-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

    Download

  • memory/2176-18-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

    Download

  • memory/2176-20-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

    Download

  • memory/2548-9-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

    Download

  • memory/3068-0-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

    Download

  • memory/3068-2-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

    Download