c3f250ab11d40bc8e68d90efa095da80a4e2c285d3d04e1c52434158345e2b47

Analysis

max time kernel
45s
max time network
16s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
08-05-2024 08:59

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General

Target

CVE-2023-38831/.git/hooks/post-update.sample
Size

189B
MD5

2b7ea5cee3c49ff53d41e00785eb974c
SHA1

b614c2f63da7dca9f1db2e7ade61ef30448fc96c
SHA256

81765af2daef323061dcbc5e61fc16481cb74b3bac9ad8a174b186523586f6c5
SHA512

473ad124642571656276bf83b9ff63ab1804d3c23a5bdae52391c6f70a894849ac60c10c9d31deff3938922ce83b68b1e60c11592bbf7ea503f4acd39968cefa

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-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sample_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.sample	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sample_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\.sample\ = "sample_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sample_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sample_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_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-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\sample_auto_file	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2292 AcroRd32.exe
2292 AcroRd32.exe

pid	process
2292	AcroRd32.exe
2292	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2196 wrote to memory of 2652	2196	cmd.exe	rundll32.exe
PID 2196 wrote to memory of 2652	2196	cmd.exe	rundll32.exe
PID 2196 wrote to memory of 2652	2196	cmd.exe	rundll32.exe
PID 2652 wrote to memory of 2292	2652	rundll32.exe	AcroRd32.exe
PID 2652 wrote to memory of 2292	2652	rundll32.exe	AcroRd32.exe
PID 2652 wrote to memory of 2292	2652	rundll32.exe	AcroRd32.exe
PID 2652 wrote to memory of 2292	2652	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\CVE-2023-38831\.git\hooks\post-update.sample
1⤵
- Suspicious use of WriteProcessMemory
PID:2196

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\post-update.sample
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2652

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\post-update.sample"
3⤵
- Suspicious use of SetWindowsHookEx
PID:2292

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
7230561d701ce37f8775014b9183c72e

SHA1
0bb20a1f43172c372b310ba797f7de177a922c0e

SHA256
e975d3374a421b2a0e60f06961f8504b2424b1aa347ba26eecb38f92136a1e52

SHA512
4fc64a129287bdf687768df7227671cdadb066a38e625899ab51e0afbf09f423220995b462337c205591e6bd55a2bd5e60d3d7f60310aab1f4417b501997cffc

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