d16dddc1e9ad69c5ef67afd93eb801c74ca5b95ec8b46741786c8c8ec47b1b1d

Analysis

max time kernel
120s
max time network
123s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 20:20

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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
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_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-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.dvm	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.dvm\ = "dvm_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\dvm_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\dvm_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\dvm_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\dvm_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\dvm_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2704 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2704 AcroRd32.exe
2704 AcroRd32.exe

pid	process
2704	AcroRd32.exe

pid	process
2704	AcroRd32.exe
2704	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2392 wrote to memory of 2928	2392	cmd.exe	rundll32.exe
PID 2392 wrote to memory of 2928	2392	cmd.exe	rundll32.exe
PID 2392 wrote to memory of 2928	2392	cmd.exe	rundll32.exe
PID 2928 wrote to memory of 2704	2928	rundll32.exe	AcroRd32.exe
PID 2928 wrote to memory of 2704	2928	rundll32.exe	AcroRd32.exe
PID 2928 wrote to memory of 2704	2928	rundll32.exe	AcroRd32.exe
PID 2928 wrote to memory of 2704	2928	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:2392

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:2928

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:2704

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
b8e37d141d6d99dc6a22b02c0ab153f9

SHA1
5ca3e7bc9d2c6a8eba76480067dafaa4341ee9f7

SHA256
b71e33e665d965cf4cec9b93fe4d75ef9934bc42e904faeb9d5b62a08b38e6e0

SHA512
7d9ac5616445f0a1ae70df8f048a16eb1c8af95260c4bff90e6aa182f957ef043454c0546d85f6980920bb4ec226e9574d99950a0bebf21e887ba367a1ace1a6

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