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
20s
max time network
19s
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/VC_REDIST.X86.14.32.31332.0.E-F067952A.pf
Size

21KB
MD5

494a76d07573ceaa6014091c10ecbabc
SHA1

1ecab609efaccfe33d4d9447dac202751dee1c6d
SHA256

92ba91c8943d8e76f52df1f13b34a8ec1297144f522639a2fc07054ac2f06d43
SHA512

3277eb2a3928ae08960a54576649f924dee6b00e5a39ff7985400d4044f456d5c58c1db3d3082fff8f9d76b051c6725677e3e6676d2cc3fff5a5cf76d0f32c00
SSDEEP

384:+QB0/v8gslF3wOg0fjBPtTrHZfeqz5qJ72srb7qQbaVclf1:Tgs40PZ1fsbaV4f1

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-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pf	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pf_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2464	AcroRd32.exe
2464	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 2688	2612	cmd.exe	29
PID 2612 wrote to memory of 2688	2612	cmd.exe	29
PID 2612 wrote to memory of 2688	2612	cmd.exe	29
PID 2688 wrote to memory of 2464	2688	rundll32.exe	30
PID 2688 wrote to memory of 2464	2688	rundll32.exe	30
PID 2688 wrote to memory of 2464	2688	rundll32.exe	30
PID 2688 wrote to memory of 2464	2688	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\VC_REDIST.X86.14.32.31332.0.E-F067952A.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\VC_REDIST.X86.14.32.31332.0.E-F067952A.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2688
- - 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\VC_REDIST.X86.14.32.31332.0.E-F067952A.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2464

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
b382390abbc821dda78c9eba8713c0c2

SHA1
bee08ffcb20058fa3a2cf837b2f1f6a78da0e47c

SHA256
ff9003be4a7437c6732b559dfb9eb11cf3c07660e677adca0c6a318df6ccb354

SHA512
de63d5912c03f33c41f03cff2e6caaafd3d2f637c6c2e540dd511b4584cc129e9dc80816eda1b6421dd9e56e51402acaecbaf177b2d1b198058c028d6b58afad

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