841a98464457d2fceff8a35e6b575b1e5e0681f7232cb3c2b94c698e38960a25

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25-03-2024 21:05

240325-zxdnnahe48 3

25-03-2024 20:59

25-03-2024 20:56

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Analysis

max time kernel
50s
max time network
49s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25-03-2024 20:59

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General

Target

Prefetch/UACSDK.EXE-49ECDFF8.pf
Size

6KB
MD5

370a18b0bbe0c5030d372cdb978aacb7
SHA1

1f2fae869f14cb292014c33af7ef37721e1d05f8
SHA256

2a75c80e92d24f555542ea708b1aa29136226da6d050c511e1d957b3a05e56ed
SHA512

b91101667a6f6b3dd5b63324ec9ed96e12e522d2a1eb93af1b677b93adfc7af743610f03481e0e986883b6688ce536cd3fa298eba8a6a4f7c473ee5ca7878c9f
SSDEEP

192:rrgARCcuyQNlfiw+fj0J7upL5XXm10GO0xfUz8hcNi:rrjCuyZ8wJixNXm10GpxcNi

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\pf_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\pf_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\pf_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\pf_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\.pf	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1752	AcroRd32.exe
1752	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 2680	1224	cmd.exe	28
PID 1224 wrote to memory of 2680	1224	cmd.exe	28
PID 1224 wrote to memory of 2680	1224	cmd.exe	28
PID 2680 wrote to memory of 1752	2680	rundll32.exe	32
PID 2680 wrote to memory of 1752	2680	rundll32.exe	32
PID 2680 wrote to memory of 1752	2680	rundll32.exe	32
PID 2680 wrote to memory of 1752	2680	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\UACSDK.EXE-49ECDFF8.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\UACSDK.EXE-49ECDFF8.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2680
- - 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\Prefetch\UACSDK.EXE-49ECDFF8.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1752

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
fd8ffe0b679df228025b1ffb930d5d00

SHA1
041083a733556116f244fb6a08c68fa44c7e0456

SHA256
166efb022fe12c59aa6ecd62eb04f99670316aa6550e2d2b9edd5d0e81be1db5

SHA512
fa73f89432deb3a3747de907b47774b5b1650a5e6877cbc1d012a18c5e0b60bf04512e94a98039620e2c294e0b545ead0626c9fba57211ef16a0b22406b66d54

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