76a1ff6c0d7827ecd0857e5a9b5298337f232662767abf0f011154c85b6da8ef

Analysis

max time kernel
122s
max time network
128s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
09/01/2024, 00:33

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General

Target

shaders/composite4.fsh
Size

5KB
MD5

658c80d83e9f5b4f7c58e7345dd9fae3
SHA1

710f110da4d3bdb07fe8f80602fdf708bcfc1c22
SHA256

010b9233bfaf9fe2d641d239e6666d42b5aafc7ebd7159dfab42d907b1f88c77
SHA512

f704d2d984956acd58da992b2b14974f378abe46eb438237eb20fdc11e71d193b167f8836fc9b6eadbf266d40dd4bea6bdc062808b056233a250d24b2dff4e30
SSDEEP

48:qAw+FWAbEy83wGDLd5TH8SRNqB57pldNbSvH91yW8crWyEq71uGvC0wHuGH8BHyg:Jw+8RyUr4dMNRrb71uGKHuGcM6xzR

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-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\fsh_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\.fsh\ = "fsh_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\fsh_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\fsh_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\.fsh	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\fsh_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\fsh_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\fsh_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2704	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2704	AcroRd32.exe
2704	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2864	2336	cmd.exe	29
PID 2336 wrote to memory of 2864	2336	cmd.exe	29
PID 2336 wrote to memory of 2864	2336	cmd.exe	29
PID 2864 wrote to memory of 2704	2864	rundll32.exe	30
PID 2864 wrote to memory of 2704	2864	rundll32.exe	30
PID 2864 wrote to memory of 2704	2864	rundll32.exe	30
PID 2864 wrote to memory of 2704	2864	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\shaders\composite4.fsh
1⤵
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\shaders\composite4.fsh
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2864
- - 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\composite4.fsh"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2704

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
82d618c0bf56adfcf47aaff077f77909

SHA1
c7a9396e26f02d90fe269c13d656aa0de75d2727

SHA256
7c07e3a395fb72242d47c852502568ae7ca9ce8650bc3280b5034d56e3df8adb

SHA512
b6faa1eaa6560f49b5662f589025e9029705a182bbffdfff9e0472d1af3e89c2b6e3ac482cd198f8e7100d7505d10183b056e2338a2c72b9bce3689ace2cf73c

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