76a1ff6c0d7827ecd0857e5a9b5298337f232662767abf0f011154c85b6da8ef

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
09-01-2024 00:33

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General

Target

shaders/composite3.fsh
Size

31KB
MD5

e6911709eba4f047ea9567677c4ee30a
SHA1

3863fc81865705fe9ac20635f0779651fabbea27
SHA256

52af8ad8c2eb65911bfb975be24ab38790799ff900cd149d083e497beb2eae21
SHA512

2830ddcf8487849a014659b4daadfe69d900599eadad0aa2d73ee4c15dca433b8c085d4a32afaa93b6705452aded3a5573ee044178beaf32d83388889c0b287a
SSDEEP

768:JwZRtz5G2jtaIRkqQQVK3hovNNXa1torG:Jw/tz59jnRkqdKzv

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-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\fsh_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.fsh	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\fsh_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\fsh_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\fsh_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\fsh_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\.fsh\ = "fsh_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_CLASSES\fsh_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2580	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2580	AcroRd32.exe
2580	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 952 wrote to memory of 2620	952	cmd.exe	17
PID 952 wrote to memory of 2620	952	cmd.exe	17
PID 952 wrote to memory of 2620	952	cmd.exe	17
PID 2620 wrote to memory of 2580	2620	rundll32.exe	30
PID 2620 wrote to memory of 2580	2620	rundll32.exe	30
PID 2620 wrote to memory of 2580	2620	rundll32.exe	30
PID 2620 wrote to memory of 2580	2620	rundll32.exe	30

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\shaders\composite3.fsh
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2620
- 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\shaders\composite3.fsh"
  2⤵
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2580

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\shaders\composite3.fsh
1⤵
- Suspicious use of WriteProcessMemory
PID:952

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
9725ee73dfd49fd1139f845e45c5d910

SHA1
8bce8e14ce16ae87243990ebd033918ec12b9095

SHA256
fbfe9a161cd827999d2e1f009e8dfbefb14da3df17876093a34c2eb4e3c35ff3

SHA512
d3a3def0ab548f1eb399e60fd444c7d35aae66bae62408767b428c04eb0c25197da0297af41964b66d712c8557cc9933972cce8d7d4b8d9e7d403b777a90ac06

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