841a98464457d2fceff8a35e6b575b1e5e0681f7232cb3c2b94c698e38960a25

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25/03/2024, 21:05

240325-zxdnnahe48 3

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Analysis

max time kernel
18s
max time network
17s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/03/2024, 21:05

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General

Target

Prefetch/SVCHOST.EXE-B6CF74F4.pf
Size

7KB
MD5

9f3521d87977090cdd48734438ba3880
SHA1

2895cd53633c4093eb3c893a5ef688cba4486e15
SHA256

52ae263c875256bc09f6fb8190398998b42d62ac06a1da0b4e878c2007495ae9
SHA512

eefefc15965b2eb4c7b9117e2acd40588d149acaa036d1b994f57b255fb9fbd7104f163fe5f2f73c3716a641790f69d6dcfdd7d9b81e8124d29c5904d37bafd9
SSDEEP

192:G4hrbFz9Ut/hYDfrW0Qk5HjsVkh/G6/4+j9PMipRN:9h/3UtO76dosVlsHpRN

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
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pf_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.pf	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pf_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_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-1-5-21-3452737119-3959686427-228443150-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pf_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2764	AcroRd32.exe
2764	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 2644	2228	cmd.exe	29
PID 2228 wrote to memory of 2644	2228	cmd.exe	29
PID 2228 wrote to memory of 2644	2228	cmd.exe	29
PID 2644 wrote to memory of 2764	2644	rundll32.exe	30
PID 2644 wrote to memory of 2764	2644	rundll32.exe	30
PID 2644 wrote to memory of 2764	2644	rundll32.exe	30
PID 2644 wrote to memory of 2764	2644	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\SVCHOST.EXE-B6CF74F4.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\SVCHOST.EXE-B6CF74F4.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2644
- - 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\SVCHOST.EXE-B6CF74F4.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2764

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
58ee500200e26407b1ed4d10f971f93b

SHA1
303e5e68c72ad7d3cf4eb472072401924e725a08

SHA256
d22432459ed8053975f137ea39e3187c679b5b06f4b5b6f8916929d79773175a

SHA512
3ef7a342f75893557320bad838a0913537fd09d7f15f90478a39cfbc6b401a0254ae4df61c93beeef66fa8cb608518aaed25e738398496e765c191560334855a

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