c3f250ab11d40bc8e68d90efa095da80a4e2c285d3d04e1c52434158345e2b47

Analysis

max time kernel
18s
max time network
17s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
08-05-2024 08:58

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General

Target

CVE-2023-38831/.git/hooks/pre-receive.sample
Size

544B
MD5

2ad18ec82c20af7b5926ed9cea6aeedd
SHA1

705a17d259e7896f0082fe2e9f2c0c3b127be5ac
SHA256

a4c3d2b9c7bb3fd8d1441c31bd4ee71a595d66b44fcf49ddb310252320169989
SHA512

ee08c11fab7e896b2e09c241954ba7640338b12c75cd8040daf053c31b2f22236d7a0deac736f89d305236312fdb4f560a38d4d8debdcc9dcdd23b2d975907d5

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-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\sample_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.sample\ = "sample_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.sample	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2664 AcroRd32.exe
2664 AcroRd32.exe

pid	process
2664	AcroRd32.exe
2664	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1304 wrote to memory of 2012	1304	cmd.exe	rundll32.exe
PID 1304 wrote to memory of 2012	1304	cmd.exe	rundll32.exe
PID 1304 wrote to memory of 2012	1304	cmd.exe	rundll32.exe
PID 2012 wrote to memory of 2664	2012	rundll32.exe	AcroRd32.exe
PID 2012 wrote to memory of 2664	2012	rundll32.exe	AcroRd32.exe
PID 2012 wrote to memory of 2664	2012	rundll32.exe	AcroRd32.exe
PID 2012 wrote to memory of 2664	2012	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\CVE-2023-38831\.git\hooks\pre-receive.sample
1⤵
- Suspicious use of WriteProcessMemory
PID:1304

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\CVE-2023-38831\.git\hooks\pre-receive.sample
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2012

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\CVE-2023-38831\.git\hooks\pre-receive.sample"
3⤵
- Suspicious use of SetWindowsHookEx
PID:2664

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
2a542329c5519b891b563e89f5887d48

SHA1
4527cc1a26ef32ffabcddcfbe1bc522ab5026f2c

SHA256
b5b0d5fd0ddfbebee5bac5163c45dcc75d4330fe74d1c52a890279f115a4414c

SHA512
66c91e3db3d0a483607a7634ff104caf562a961f769efdbc0c8b25654d81e92148728c9f3606457a5d2fefe683c3727cc4d2772342a77d42b15fbcffc26529c3

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