791bb04f7e7abee241b843a8259a7857d5a528b536add3d69b33c2c864e26f60

Analysis

max time kernel
6s
max time network
6s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
09/01/2024, 04:32

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Reason

Machine shutdown

Report Analysis Logs

General

Target

4d576e327c901d357019b52ab274fbdc.exe
Size

42KB
MD5

4d576e327c901d357019b52ab274fbdc
SHA1

258aa64d7074186701d00c5f8aa519dc2a8466aa
SHA256

791bb04f7e7abee241b843a8259a7857d5a528b536add3d69b33c2c864e26f60
SHA512

37fd7c24995eab1c7925ba58421543c6cd1ca1f0432f4d4eeddc7e98c3940fd509acafe3d61a8bdc7da6aca156b998ecd05c292e52b1491a5dc8d1d777fb2a63
SSDEEP

768:WvsnUgQ4S4L6AcyeT3uratMQBeEMoEL39D:WvsUq6AcyeT3MatAFoE79

Score

7^/10

persistence

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\Command	4d576e327c901d357019b52ab274fbdc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\ShellExt32.exe %1 %*"	4d576e327c901d357019b52ab274fbdc.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ShellExt32.exe	4d576e327c901d357019b52ab274fbdc.exe
File opened for modification	C:\Windows\SysWOW64\ShellExt32.exe	4d576e327c901d357019b52ab274fbdc.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2336	1680	WerFault.exe	1

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\Command	4d576e327c901d357019b52ab274fbdc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\ShellExt32.exe %1 %*"	4d576e327c901d357019b52ab274fbdc.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1680	4d576e327c901d357019b52ab274fbdc.exe
1680	4d576e327c901d357019b52ab274fbdc.exe
1680	4d576e327c901d357019b52ab274fbdc.exe
1680	4d576e327c901d357019b52ab274fbdc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1680	4d576e327c901d357019b52ab274fbdc.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1680	4d576e327c901d357019b52ab274fbdc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 2336	1680	4d576e327c901d357019b52ab274fbdc.exe	28
PID 1680 wrote to memory of 2336	1680	4d576e327c901d357019b52ab274fbdc.exe	28
PID 1680 wrote to memory of 2336	1680	4d576e327c901d357019b52ab274fbdc.exe	28
PID 1680 wrote to memory of 2336	1680	4d576e327c901d357019b52ab274fbdc.exe	28

C:\Users\Admin\AppData\Local\Temp\4d576e327c901d357019b52ab274fbdc.exe
"C:\Users\Admin\AppData\Local\Temp\4d576e327c901d357019b52ab274fbdc.exe"
1⤵
- Modifies system executable filetype association
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 220
  2⤵
  - Program crash
  PID:2336

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:2748

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:2760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2748-2-0x0000000002D90000-0x0000000002D91000-memory.dmp

Filesize
4KB

Download
memory/2760-3-0x0000000002AB0000-0x0000000002AB1000-memory.dmp

Filesize
4KB

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Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads