355ca834be29c148d27f973299fac1c434bcec5b7b319a47c7d98eb1c96da1eb

Analysis

max time kernel
165s
max time network
274s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
24-11-2022 05:32

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General

Target

mstsc.exe
Size

1.5MB
MD5

7ffae462b1c5a51c720d428237febd97
SHA1

bc0ac58f858cfd14f2db0a3c4a44da4ea9ad21d7
SHA256

355ca834be29c148d27f973299fac1c434bcec5b7b319a47c7d98eb1c96da1eb
SHA512

7cd6c6f9357b0c1c0abd3ef046ad7ed48d627071a99603f9ffe5f68894afbebca46bb634f0f75a665c171fcefc984b5232300399a8f1637ff55bdc113e8961e2
SSDEEP

24576:kqw21bi8YMMjO9SA2yNA5OfBD3TUTsukzwY89mZACErai2/FE/DgzbfFK8WZRw+i:9bi8pMjO9SA2yNA58BD3TrukzwY89mZv

Score

8^/10

persistence

Malware Config

Signatures

Modifies Installed Components in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.

Query Registry
T1012

Peripheral Device Discovery
T1120

System Information Discovery
T1082

Processes:

explorer.exe

description ioc process

File opened (read-only) \??\D: explorer.exe

description	ioc	process
File opened (read-only)	\??\D:	explorer.exe

Modifies registry class 9 IoCs

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	explorer.exe
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-2971393436-602173351-1645505021-1000\{AD077CEE-05DD-4E38-B41E-953BDA8A0B68}	explorer.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

explorer.exe

description	pid	process
Token: SeShutdownPrivilege	3384	explorer.exe
Token: SeCreatePagefilePrivilege	3384	explorer.exe
Token: SeShutdownPrivilege	3384	explorer.exe
Token: SeCreatePagefilePrivilege	3384	explorer.exe
Token: SeShutdownPrivilege	3384	explorer.exe
Token: SeCreatePagefilePrivilege	3384	explorer.exe
Token: SeShutdownPrivilege	3384	explorer.exe
Token: SeCreatePagefilePrivilege	3384	explorer.exe
Token: SeShutdownPrivilege	3384	explorer.exe
Token: SeCreatePagefilePrivilege	3384	explorer.exe

Suspicious use of FindShellTrayWindow 7 IoCs

Processes:

explorer.exe

pid process

3384 explorer.exe
3384 explorer.exe
3384 explorer.exe
3384 explorer.exe
3384 explorer.exe
3384 explorer.exe
3384 explorer.exe

Suspicious use of SendNotifyMessage 9 IoCs

Processes:

explorer.exe

pid	process
3384	explorer.exe
3384	explorer.exe
3384	explorer.exe
3384	explorer.exe
3384	explorer.exe
3384	explorer.exe
3384	explorer.exe
3384	explorer.exe
3384	explorer.exe

C:\Users\Admin\AppData\Local\Temp\mstsc.exe
"C:\Users\Admin\AppData\Local\Temp\mstsc.exe"
1⤵
PID:2416

C:\Windows\explorer.exe
explorer.exe
1⤵
- Modifies Installed Components in the registry
- Enumerates connected drives
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3384

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 492 -p 3384 -ip 3384
1⤵
PID:4304

C:\Windows\system32\werfault.exe
werfault.exe /hc /shared Global\bd24c3d41c5f438e98ce8b559edce396 /t 0 /p 2316
1⤵
PID:2620

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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