f37c0297f54bc509b60046fa825ec4f800a001efc2922525fb5a20e7da96dc0d

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
25-06-2024 18:12

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General

Target

Lossless Scaling 2.9/Shaders/NIS.cso
Size

26KB
MD5

8e9a02fcd42a22ff0e24bae4ccb57867
SHA1

9ffc772d63e870035c6333f30c458fba70e48c6c
SHA256

90600dc728c3dae6daf0878c183e374508d77e4d6eb11124d817a5d6e132fa71
SHA512

5f8b6dd6b5db99c8c0b6dd4b6cec2206db2c371c060306ec3cafc0bc78f605ad58c50659ea2d1c3c5e83f661d194fc0ecc2d2a53209b85d8b7aa6b1dc4738cd7
SSDEEP

192:gJ7cccyrPMsUO3vUSQlu2Qk5NSVvb04Yn/6K6ynCkC0iEiUrUz08f4GdWZvi9kSZ:c7/1r3GwAQVsIB

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-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\cso_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\cso_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\cso_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\cso_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\cso_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\.cso	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\.cso\ = "cso_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\cso_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2876	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2876	AcroRd32.exe
2876	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 956 wrote to memory of 2720	956	cmd.exe	30
PID 956 wrote to memory of 2720	956	cmd.exe	30
PID 956 wrote to memory of 2720	956	cmd.exe	30
PID 2720 wrote to memory of 2876	2720	rundll32.exe	31
PID 2720 wrote to memory of 2876	2720	rundll32.exe	31
PID 2720 wrote to memory of 2876	2720	rundll32.exe	31
PID 2720 wrote to memory of 2876	2720	rundll32.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Lossless Scaling 2.9\Shaders\NIS.cso"
1⤵
- Suspicious use of WriteProcessMemory
PID:956
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Lossless Scaling 2.9\Shaders\NIS.cso
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2720
- - 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\Lossless Scaling 2.9\Shaders\NIS.cso"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2876

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

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Downloads

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

Filesize
3KB

MD5
48f8c9f98dd2d9f5fb280bbfc2767f51

SHA1
5455ad2b6b81baad08258edd8e3e779526d12710

SHA256
8f873dbd21f11583e3f117e62b12351a2229ef81c010e2ac825d29aa9d4d63a2

SHA512
ec8b7d6e1b76b53a67e2e107b6cd9013eb9655232818ea9a1aca22b8d173ca3dea0fc038faae337073cafa04213925b5b73c6c7ba9fa8251c18ef13ab45b1351

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