318526b108539af55ec23b5a9720441d39e944e222e5322455a9845d99d4ad04

Analysis

max time kernel
151s
max time network
34s
platform
windows7_x64
resource
win7-20230621-en
resource tags

arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
submitted
25-06-2023 18:39

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General

Target

windows.sig
Size

4.5MB
MD5

96750118e244a2afe885ad737b3dfd84
SHA1

8e86e84c5672d5d365b8553ba9cedc927b0df1b9
SHA256

318526b108539af55ec23b5a9720441d39e944e222e5322455a9845d99d4ad04
SHA512

0d0fb426074f0c6e1bbaa5579d16b62ba51096d56a83c652fddb72da472d5a9355f75d66645b648b4b9d8dedaaf2514d13a07cc2c91e81e40e1846fb7d719ecc
SSDEEP

24576:DTYQHui+zuYJod2mSBhkVa+Q3KhKa3KBpPk:vYXiSB5ZGePk

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 10 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000_CLASSES\sig_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000_CLASSES\.sig\ = "sig_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000_CLASSES\sig_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000_CLASSES\sig_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000_CLASSES\sig_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000_CLASSES\sig_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000_CLASSES\.sig	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3950455397-3229124517-1686476975-1000_CLASSES\sig_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
928	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
928	AcroRd32.exe
928	AcroRd32.exe
928	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1488 wrote to memory of 560	1488	cmd.exe	28
PID 1488 wrote to memory of 560	1488	cmd.exe	28
PID 1488 wrote to memory of 560	1488	cmd.exe	28
PID 560 wrote to memory of 928	560	rundll32.exe	29
PID 560 wrote to memory of 928	560	rundll32.exe	29
PID 560 wrote to memory of 928	560	rundll32.exe	29
PID 560 wrote to memory of 928	560	rundll32.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\windows.sig
1⤵
- Suspicious use of WriteProcessMemory
PID:1488
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\windows.sig
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:560
- - 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\windows.sig"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:928

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

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
f17e6b72f17421fabda8d64c75169b5b

SHA1
d86ae78422702dd7caae7f26b77018b1e0b4c82d

SHA256
be14f67d5c0467f512a57af70e734a64467e5582497d3a5fcdfbb843c2bffdd7

SHA512
8a2abf12a2d8c68bde0e7f326e8eaf416eddefd3fe74244c7f1b64b6ed2a7b93991645325e61441ef3dcc20a22fae460ef8440cd150ebe78ea3e168b6b6c1754

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