594fc6920eaa06364ff7ffeb87be15ec81882030749759a872a6b9f17da75670

Resubmissions

21-05-2024 14:43

240521-r3mvhshd83 3

21-05-2024 14:40

21-05-2024 14:37

21-05-2024 14:34

21-05-2024 14:31

Analysis

max time kernel
18s
max time network
16s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 14:43

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General

Target

Some Problems/Copy of PUEOPWRcvD-RSR8S88_R8uFzaOIoSK9Q7y6r7sseeRfVVtLihkEbx2vTw45gVXZTMcx3MkJ6NytVPs.c9r
Size

278KB
MD5

9087837d03810609f261b073959ab620
SHA1

10783093b0a572c6a4b1a4982db01d16f82968f1
SHA256

21a51f5762a95c3ef6f7e85a492c831c9defd90f57115409397ab73975ce6e03
SHA512

0bce284604520d99c607d9626cdf0a135c2e72e19fb298e138fe60d4ac388d753ab838c5f19caf5fb2655a9253e2115ad50722e857ca8ef941960270d671a6f7
SSDEEP

6144:aWz3uNx6ec/Rp7q1XgUWkrgPcQ7T/ETOIvPYlYM90D8vDfHMMjVhc:dzpec7qDkE08HYxh7HMV

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-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.c9r	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.c9r\ = "c9r_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\c9r_auto_file\shell\Read\command	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2712 AcroRd32.exe
2712 AcroRd32.exe

pid	process
2712	AcroRd32.exe
2712	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1928 wrote to memory of 2672	1928	cmd.exe	rundll32.exe
PID 1928 wrote to memory of 2672	1928	cmd.exe	rundll32.exe
PID 1928 wrote to memory of 2672	1928	cmd.exe	rundll32.exe
PID 2672 wrote to memory of 2712	2672	rundll32.exe	AcroRd32.exe
PID 2672 wrote to memory of 2712	2672	rundll32.exe	AcroRd32.exe
PID 2672 wrote to memory of 2712	2672	rundll32.exe	AcroRd32.exe
PID 2672 wrote to memory of 2712	2672	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Some Problems\Copy of PUEOPWRcvD-RSR8S88_R8uFzaOIoSK9Q7y6r7sseeRfVVtLihkEbx2vTw45gVXZTMcx3MkJ6NytVPs.c9r"
1⤵
- Suspicious use of WriteProcessMemory
PID:1928

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Some Problems\Copy of PUEOPWRcvD-RSR8S88_R8uFzaOIoSK9Q7y6r7sseeRfVVtLihkEbx2vTw45gVXZTMcx3MkJ6NytVPs.c9r
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2672

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\Some Problems\Copy of PUEOPWRcvD-RSR8S88_R8uFzaOIoSK9Q7y6r7sseeRfVVtLihkEbx2vTw45gVXZTMcx3MkJ6NytVPs.c9r"
3⤵
- Suspicious use of SetWindowsHookEx
PID:2712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
647b6b03feb3834169b9353313324061

SHA1
0d8ab0df61c0e649daef0d1ef031eae3e42a9d3e

SHA256
a598e8dab7cdb431732e2560bad40cbb388d6c9ae4f5e94f21f0448d26f59b21

SHA512
a34bbb3ebc8a84a9bcac4bb094c469fc2ffc06548f3dcfa4ef3663641cdceae2e5d341d5e4e02ba1ba70c331dca7f7909887ac25878bca95f741bf4bb08d2502

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