24991c7dcb0495a65b16bec228659c2f5db8a767f040da2a39db83bee2aa476d

Analysis

max time kernel
150s
max time network
30s
platform
windows7_x64
resource
win7-20230703-en
resource tags

arch:x64arch:x86image:win7-20230703-enlocale:en-usos:windows7-x64system
submitted
04/07/2023, 20:45

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General

Target

升级包/yzrules.tar.gz
Size

23KB
MD5

7e8e550c549a51139465111d15ad8bad
SHA1

e11b4e395e335d5590b32b3cabbb2f97b4e99157
SHA256

d0c8572435bc7af041e61df00fb99eaa4ca6cb61ecc1becb269bd4c01ecf8713
SHA512

329bfd851656d2a7799f4aa73a916e008ac05200785fc4e6e6e32ccfa6447f63d70f96d79af0cb8da7f0caf7f962042583333bde6225feb245cabce864cff051
SSDEEP

384:SPX/lJg761DZ9jtK8aDOndX/L0SieEd/RN6ZRmbWExY879sMwBJPl1VmwySOfsk:sXg7KKHDOdXDLAR2YWaX7WzXfeHsk

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-1-5-21-2859459355-424593036-1984306042-1000_CLASSES\gz_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2859459355-424593036-1984306042-1000_CLASSES\gz_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2859459355-424593036-1984306042-1000_CLASSES\gz_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2859459355-424593036-1984306042-1000_CLASSES\gz_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2859459355-424593036-1984306042-1000_CLASSES\.gz\ = "gz_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2859459355-424593036-1984306042-1000_CLASSES\.gz	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2859459355-424593036-1984306042-1000_CLASSES\gz_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2859459355-424593036-1984306042-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2859459355-424593036-1984306042-1000_CLASSES\gz_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1596	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1596	AcroRd32.exe
1596	AcroRd32.exe
1596	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 3000	1988	cmd.exe	29
PID 1988 wrote to memory of 3000	1988	cmd.exe	29
PID 1988 wrote to memory of 3000	1988	cmd.exe	29
PID 3000 wrote to memory of 1596	3000	rundll32.exe	30
PID 3000 wrote to memory of 1596	3000	rundll32.exe	30
PID 3000 wrote to memory of 1596	3000	rundll32.exe	30
PID 3000 wrote to memory of 1596	3000	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\升级包\yzrules.tar.gz
1⤵
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\升级包\yzrules.tar.gz
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3000
- - 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\升级包\yzrules.tar.gz"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1596

Network

MITRE ATT&CK Enterprise v6

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
2ecb0c15d9a47170a750de668820691f

SHA1
aff35eb59a79ad9112727e65e812f06553e7dd06

SHA256
1534be20715e984f4b70d170e19f86033e2b968b1d43601fc9e7f7445fb36020

SHA512
bcb9124546e54d02d978943094451dadfa76f8bafaf5d5f5925e35ee7697e077870c7ac520456840df89bbe7a1d47adb0ab4d39d808f6bd69fde0c6aed6c6154

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