3b5a733b83f48fb79d6ba81e8ca6d3f08fa3db062fb1bae6da7af166f9a9a3c5

Analysis

max time kernel
147s
max time network
140s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
10/01/2024, 22:13

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General

Target

51c169ee9613134ff19f469ea62497a4.exe
Size

144KB
MD5

51c169ee9613134ff19f469ea62497a4
SHA1

1a8f40bbc83ad8d1f66295a20a7195904c34338c
SHA256

3b5a733b83f48fb79d6ba81e8ca6d3f08fa3db062fb1bae6da7af166f9a9a3c5
SHA512

c91d4fc33dac3515a5212930e378e0dd33c4a177086bb600aef27736288bec149866b68e9096ca754e02c7444df7c3b872c497527daf2976c77181d7b1da2c5f
SSDEEP

3072:RT7wfo4gaGu3GpRGtXuZV91KQCrq/l4pyXM1nIpfcPv:hnnRGdc9kCks8IW

Score

10^/10

bootkit evasion persistence

Malware Config

Signatures

Modifies firewall policy service 2 TTPs 2 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	51c169ee9613134ff19f469ea62497a4.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Public\C-76947-8457-2745\winmsnliv.exe = "C:\\Users\\Public\\C-76947-8457-2745\\winmsnliv.exe:*:Enabled:WindowsDriverControl"	51c169ee9613134ff19f469ea62497a4.exe

Executes dropped EXE 3 IoCs

pid	Process
2724	winmsnliv.exe
2620	winmsnliv.exe
2180	winmsnliv.exe

Loads dropped DLL 2 IoCs

pid	Process
2796	51c169ee9613134ff19f469ea62497a4.exe
2796	51c169ee9613134ff19f469ea62497a4.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsDriverControl = "C:\\Users\\Public\\C-76947-8457-2745\\winmsnliv.exe"	51c169ee9613134ff19f469ea62497a4.exe

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

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

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	51c169ee9613134ff19f469ea62497a4.exe
File opened for modification	\??\PhysicalDrive0	winmsnliv.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2908 set thread context of 3040	2908	51c169ee9613134ff19f469ea62497a4.exe	28
PID 3040 set thread context of 2796	3040	51c169ee9613134ff19f469ea62497a4.exe	29
PID 2724 set thread context of 2620	2724	winmsnliv.exe	31
PID 2620 set thread context of 2180	2620	winmsnliv.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2908	51c169ee9613134ff19f469ea62497a4.exe
3040	51c169ee9613134ff19f469ea62497a4.exe
2724	winmsnliv.exe
2620	winmsnliv.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 3040	2908	51c169ee9613134ff19f469ea62497a4.exe	28
PID 2908 wrote to memory of 3040	2908	51c169ee9613134ff19f469ea62497a4.exe	28
PID 2908 wrote to memory of 3040	2908	51c169ee9613134ff19f469ea62497a4.exe	28
PID 2908 wrote to memory of 3040	2908	51c169ee9613134ff19f469ea62497a4.exe	28
PID 2908 wrote to memory of 3040	2908	51c169ee9613134ff19f469ea62497a4.exe	28
PID 2908 wrote to memory of 3040	2908	51c169ee9613134ff19f469ea62497a4.exe	28
PID 2908 wrote to memory of 3040	2908	51c169ee9613134ff19f469ea62497a4.exe	28
PID 2908 wrote to memory of 3040	2908	51c169ee9613134ff19f469ea62497a4.exe	28
PID 2908 wrote to memory of 3040	2908	51c169ee9613134ff19f469ea62497a4.exe	28
PID 3040 wrote to memory of 2796	3040	51c169ee9613134ff19f469ea62497a4.exe	29
PID 3040 wrote to memory of 2796	3040	51c169ee9613134ff19f469ea62497a4.exe	29
PID 3040 wrote to memory of 2796	3040	51c169ee9613134ff19f469ea62497a4.exe	29
PID 3040 wrote to memory of 2796	3040	51c169ee9613134ff19f469ea62497a4.exe	29
PID 3040 wrote to memory of 2796	3040	51c169ee9613134ff19f469ea62497a4.exe	29
PID 3040 wrote to memory of 2796	3040	51c169ee9613134ff19f469ea62497a4.exe	29
PID 3040 wrote to memory of 2796	3040	51c169ee9613134ff19f469ea62497a4.exe	29
PID 3040 wrote to memory of 2796	3040	51c169ee9613134ff19f469ea62497a4.exe	29
PID 3040 wrote to memory of 2796	3040	51c169ee9613134ff19f469ea62497a4.exe	29
PID 2796 wrote to memory of 2724	2796	51c169ee9613134ff19f469ea62497a4.exe	30
PID 2796 wrote to memory of 2724	2796	51c169ee9613134ff19f469ea62497a4.exe	30
PID 2796 wrote to memory of 2724	2796	51c169ee9613134ff19f469ea62497a4.exe	30
PID 2796 wrote to memory of 2724	2796	51c169ee9613134ff19f469ea62497a4.exe	30
PID 2724 wrote to memory of 2620	2724	winmsnliv.exe	31
PID 2724 wrote to memory of 2620	2724	winmsnliv.exe	31
PID 2724 wrote to memory of 2620	2724	winmsnliv.exe	31
PID 2724 wrote to memory of 2620	2724	winmsnliv.exe	31
PID 2724 wrote to memory of 2620	2724	winmsnliv.exe	31
PID 2724 wrote to memory of 2620	2724	winmsnliv.exe	31
PID 2724 wrote to memory of 2620	2724	winmsnliv.exe	31
PID 2724 wrote to memory of 2620	2724	winmsnliv.exe	31
PID 2724 wrote to memory of 2620	2724	winmsnliv.exe	31
PID 2620 wrote to memory of 2180	2620	winmsnliv.exe	32
PID 2620 wrote to memory of 2180	2620	winmsnliv.exe	32
PID 2620 wrote to memory of 2180	2620	winmsnliv.exe	32
PID 2620 wrote to memory of 2180	2620	winmsnliv.exe	32
PID 2620 wrote to memory of 2180	2620	winmsnliv.exe	32
PID 2620 wrote to memory of 2180	2620	winmsnliv.exe	32
PID 2620 wrote to memory of 2180	2620	winmsnliv.exe	32
PID 2620 wrote to memory of 2180	2620	winmsnliv.exe	32
PID 2620 wrote to memory of 2180	2620	winmsnliv.exe	32

C:\Users\Admin\AppData\Local\Temp\51c169ee9613134ff19f469ea62497a4.exe
"C:\Users\Admin\AppData\Local\Temp\51c169ee9613134ff19f469ea62497a4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Users\Admin\AppData\Local\Temp\51c169ee9613134ff19f469ea62497a4.exe
  "C:\Users\Admin\AppData\Local\Temp\51c169ee9613134ff19f469ea62497a4.exe"
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3040
- - C:\Users\Admin\AppData\Local\Temp\51c169ee9613134ff19f469ea62497a4.exe
    "C:\Users\Admin\AppData\Local\Temp\51c169ee9613134ff19f469ea62497a4.exe"
    3⤵
    - Modifies firewall policy service
    - Loads dropped DLL
    - Adds Run key to start application
    - Suspicious use of WriteProcessMemory
    PID:2796
  - - C:\Users\Public\C-76947-8457-2745\winmsnliv.exe
      "C:\Users\Public\C-76947-8457-2745\winmsnliv.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2724
    - - C:\Users\Public\C-76947-8457-2745\winmsnliv.exe
        
        "C:\Users\Public\C-76947-8457-2745\winmsnliv.exe"
        5⤵
        Executes dropped EXE
        Writes to the Master Boot Record (MBR)
        Suspicious use of SetThreadContext
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:2620
      - C:\Users\Public\C-76947-8457-2745\winmsnliv.exe
        
        "C:\Users\Public\C-76947-8457-2745\winmsnliv.exe"
        6⤵
        Executes dropped EXE
        
        PID:2180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Public\C-76947-8457-2745\winmsnliv.exe

Filesize
144KB

MD5
51c169ee9613134ff19f469ea62497a4

SHA1
1a8f40bbc83ad8d1f66295a20a7195904c34338c

SHA256
3b5a733b83f48fb79d6ba81e8ca6d3f08fa3db062fb1bae6da7af166f9a9a3c5

SHA512
c91d4fc33dac3515a5212930e378e0dd33c4a177086bb600aef27736288bec149866b68e9096ca754e02c7444df7c3b872c497527daf2976c77181d7b1da2c5f

Download Submit
memory/2180-81-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2180-79-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2620-80-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2796-31-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2796-28-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2796-33-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2796-24-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2796-22-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2796-20-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2796-18-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3040-14-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3040-2-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3040-30-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3040-17-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3040-12-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3040-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3040-6-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3040-4-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads