d16dddc1e9ad69c5ef67afd93eb801c74ca5b95ec8b46741786c8c8ec47b1b1d

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-04-2024 14:29

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General

Target

SpySheriff.dvm
Size

100B
MD5

4a656c63897ca241f5b162b885510c82
SHA1

63b6590ee77ca9f52570d79fda2c6043d3dc112b
SHA256

e36b521029b99d1698724aa08c817d15382a27a81a7c736c12145364e2e94432
SHA512

a7001315e46f0478731e8f42f02ec25fa84f5e332477fb1517dd4a7fec1bd53ec15f9c177e280a9c513815f9496e94bd1674e504260d200b54cdeee4756e4f31

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 registry class 9 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\dvm_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\dvm_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.dvm\ = "dvm_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\dvm_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\dvm_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\dvm_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\dvm_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.dvm	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2992 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2992 AcroRd32.exe
2992 AcroRd32.exe

pid	process
2992	AcroRd32.exe

pid	process
2992	AcroRd32.exe
2992	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2292 wrote to memory of 2676	2292	cmd.exe	rundll32.exe
PID 2292 wrote to memory of 2676	2292	cmd.exe	rundll32.exe
PID 2292 wrote to memory of 2676	2292	cmd.exe	rundll32.exe
PID 2676 wrote to memory of 2992	2676	rundll32.exe	AcroRd32.exe
PID 2676 wrote to memory of 2992	2676	rundll32.exe	AcroRd32.exe
PID 2676 wrote to memory of 2992	2676	rundll32.exe	AcroRd32.exe
PID 2676 wrote to memory of 2992	2676	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\SpySheriff.dvm
1⤵
- Suspicious use of WriteProcessMemory
PID:2292

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\SpySheriff.dvm
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2676

C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\SpySheriff.dvm"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2992

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Filesize
3KB

MD5
5e18e4844a3d1ad4427e3663cdbc0b59

SHA1
85a6a7de655f24e84e48cd7351fbc3c8585f680e

SHA256
0b18d502fd205ee2d3dede1fdd5217d0eadb96900fea15381f39d85bdb3ed11b

SHA512
48210aeb7baebdec6edd67450d0fa8721e97056669f6987833d344fe0e116ac1db812d1d1f6629d681119f48fd600adacf84675020bad3da960198c25f1214bb

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