841a98464457d2fceff8a35e6b575b1e5e0681f7232cb3c2b94c698e38960a25

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25/03/2024, 21:05

240325-zxdnnahe48 3

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25/03/2024, 20:36

Analysis

max time kernel
18s
max time network
16s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
25/03/2024, 21:05

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General

Target

Prefetch/SVCHOST.EXE-B1C43117.pf
Size

9KB
MD5

e33dd1232fa487297ef2a05efb4121ae
SHA1

9a9a7fd378203f4f49e5c1f882c24cc6b7378705
SHA256

ebc783f8723414bdcf70434e0f1c9cf0fb628b59ad9af1c5f3a497cf60bf8880
SHA512

9aec8d74b57952b39db6b61666706518c195f3c3fbcad2e4c3ca5c1bfc775ff4e60a1ec069b04c230e23334940d64482300a27eca67e069f2b89dd3faeca70fe
SSDEEP

192:0KrKUh7aiksB7C74NiAsxzu7+aWarDk1zmmt80Fjosb/lO:xrXN11W4UAozDaxrDk1zmmt8Kj9NO

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-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pf_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pf_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pf_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pf	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_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
2908	AcroRd32.exe
2908	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2968 wrote to memory of 2636	2968	cmd.exe	29
PID 2968 wrote to memory of 2636	2968	cmd.exe	29
PID 2968 wrote to memory of 2636	2968	cmd.exe	29
PID 2636 wrote to memory of 2908	2636	rundll32.exe	30
PID 2636 wrote to memory of 2908	2636	rundll32.exe	30
PID 2636 wrote to memory of 2908	2636	rundll32.exe	30
PID 2636 wrote to memory of 2908	2636	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\SVCHOST.EXE-B1C43117.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:2968
- 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-B1C43117.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2636
- - 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-B1C43117.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2908

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
16788895d76299a655fa9a7965c79c84

SHA1
648965cb888e5e046c4cfb685181033596cc0951

SHA256
eca4a8716762bb65c8766984c8aca799ef0f1698c7537a2cc0baea7f8891a992

SHA512
8247fe059d73cee3506dde13532af8dfb984afba3b040b3cb4f1694b3820eec005901acd7c571212e55f11a8480dddc2999166d1c6672621d88d1d85f399480b

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