9cf94355051bf0f4a45724ca20d1cc02f76371b963ab7d1e38bd8997737b13d8

Resubmissions

23-11-2023 20:34

231123-zcl5ascb62 3

23-11-2023 20:33

23-11-2023 20:32

23-11-2023 05:23

23-11-2023 05:19

23-11-2023 05:16

23-11-2023 05:11

23-11-2023 05:05

Analysis

max time kernel
21s
max time network
26s
platform
windows10-1703_x64
resource
win10-20231023-en
resource tags

arch:x64arch:x86image:win10-20231023-enlocale:en-usos:windows10-1703-x64system
submitted
23-11-2023 05:16

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General

Target

disallowedcert.stl
Size

5KB
MD5

78785956ab4e54d6116d673c3491edff
SHA1

962277a5497c60c77ba5de1caf7606d976e4299d
SHA256

c514dbdbb13632cbb378c59086c1ebb0bc9b25ffb0a349f2b052b065c0d913e6
SHA512

854eba4c9597692f38fc65acf6510bb4894873383b873a34a8b9e46fdec427aa6562b8592fb279431decdbb507e8ed605b78b1483052d9cd4196fa3cf1542cc1
SSDEEP

96:7nxsSPd1si1Y50uP/D+DExy9YDcvJFS9Vxk1qe79tDD0BDEdf6PYjISm2gry7fjn:7G2LV00GDTH63Req6vSDf8hUP

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies Internet Explorer Phishing Filter 1 TTPs 2 IoCs

Modify Registry

T1112

Processes:

iexplore.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\PhishingFilter	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\PhishingFilter\ClientSupported_MigrationTime = 40f63d07e705da01	iexplore.exe

Modifies Internet Explorer settings 1 TTPs 18 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Set value (data)	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\RepId\PublicId = "{6365164C-25EF-4DF1-8656-004C092AAD48}"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.15063.0\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\RepId	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{95696497-89BF-11EE-905A-D6ECF92EF593} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe

Modifies registry class 4 IoCs

Processes:

cmd.exeOpenWith.exeiexplore.exeOpenWith.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000_Classes\Local Settings	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-946614337-2046421199-3397417319-1000_Classes\Local Settings	OpenWith.exe

Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

1508 NOTEPAD.EXE
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

OpenWith.exe

pid process

4024 OpenWith.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

iexplore.exe

pid process

3884 iexplore.exe
3884 iexplore.exe

pid	process
1508	NOTEPAD.EXE

pid	process
3884	iexplore.exe
3884	iexplore.exe

Suspicious use of SetWindowsHookEx 64 IoCs

Processes:

OpenWith.exe

pid	process
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe
4024	OpenWith.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

OpenWith.exeiexplore.exe

description	pid	process	target process
PID 4024 wrote to memory of 3884	4024	OpenWith.exe	iexplore.exe
PID 4024 wrote to memory of 3884	4024	OpenWith.exe	iexplore.exe
PID 3884 wrote to memory of 3508	3884	iexplore.exe	IEXPLORE.EXE
PID 3884 wrote to memory of 3508	3884	iexplore.exe	IEXPLORE.EXE
PID 3884 wrote to memory of 3508	3884	iexplore.exe	IEXPLORE.EXE

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\disallowedcert.stl
1⤵
- Modifies registry class
PID:2404

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4024

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\AppData\Local\Temp\disallowedcert.stl
2⤵
- Modifies Internet Explorer Phishing Filter
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3884

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3884 CREDAT:82945 /prefetch:2
3⤵
- Modifies Internet Explorer settings
PID:3508

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
PID:3096

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\disallowedcert.stl
2⤵
- Opens file in notepad (likely ransom note)
PID:1508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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