501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c

Analysis

max time kernel
191s
max time network
252s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 09:53

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General

Target

501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe
Size

4.2MB
MD5

07f8195a0f98d7d734bf21cb2b46e0ab
SHA1

cb589f3e827e5a56c689165948fa7b2d70658e6c
SHA256

501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c
SHA512

40c8523596e461427e4f3e070ad6c31e9634995b5a6761446b1af448b30cf0d1787538f97bcaea480a54475cc06aa8aaf3aa8c749bbb3887cf40038a6fe5ecfc
SSDEEP

98304:ECjPKNA1vv3LuCZFJwHOVjGE2nzaTZwOw5qBs9J9:ECbGAdPLuCHu0GEOzUKOns9T

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "%AppData%\\Microsoft\\winlogon.exe,explorer.exe"	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Adobe Reader = "%AppData%\\Microsoft\\winlogon.exe"	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Windows\CurrentVersion\Run	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe Reader = "%AppData%\\Microsoft\\winlogon.exe"	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

description	pid	process	target process
PID 3892 set thread context of 3696	3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe	svchost.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3996 3696 WerFault.exe svchost.exe

pid	pid_target	process	target process
3996	3696	WerFault.exe	svchost.exe

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

pid	process
3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe
3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe
3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe
3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

Suspicious use of SendNotifyMessage 4 IoCs

Processes:

501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

pid	process
3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe
3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe
3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe
3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe

description	pid	process	target process
PID 3892 wrote to memory of 3696	3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe	svchost.exe
PID 3892 wrote to memory of 3696	3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe	svchost.exe
PID 3892 wrote to memory of 3696	3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe	svchost.exe
PID 3892 wrote to memory of 3696	3892	501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe
"C:\Users\Admin\AppData\Local\Temp\501140cf4e9b12b9c222ecfc46a94a0c9cf0d88392ece4e7518bf6bbc1ca129c.exe"
1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3892

C:\Windows\SysWOW64\svchost.exe
"C:\Windows\System32\svchost.exe"
2⤵
PID:3696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3696 -s 84
3⤵
- Program crash
PID:3996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 176 -p 3696 -ip 3696
1⤵
PID:4100

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3696-132-0x0000000000000000-mapping.dmp

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