f37c0297f54bc509b60046fa825ec4f800a001efc2922525fb5a20e7da96dc0d

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
25/06/2024, 18:12

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General

Target

Lossless Scaling 2.9/Shaders/RCAS.cso
Size

7KB
MD5

c0f2e11bbe106f1fd4725772272b9f7a
SHA1

cf4f9449a0ffa68862ce1f794df8a200cdf88e2e
SHA256

ff051512bf2fbb100860be8d913f1629866440cade1033ad3e554f97261e33a4
SHA512

b8713587aa4d924ed8c0f3a69dbc4707c99178727a46dc2c75e2a19f18107846a642b129a2054822301232c8a1464148cfa405c1614b19e40c2599660fb43057
SSDEEP

192:nqG6/c/cYuHU+owqkgcw0HM4/KIyJpwy4MY8wqvFSSu0HVoB:nqXYf+uRIywyk9X

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-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\cso_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\.cso	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\.cso\ = "cso_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\cso_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_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-1-5-21-2812790648-3157963462-487717889-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\cso_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\cso_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\cso_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2768	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2768	AcroRd32.exe
2768	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 2888	2184	cmd.exe	29
PID 2184 wrote to memory of 2888	2184	cmd.exe	29
PID 2184 wrote to memory of 2888	2184	cmd.exe	29
PID 2888 wrote to memory of 2768	2888	rundll32.exe	30
PID 2888 wrote to memory of 2768	2888	rundll32.exe	30
PID 2888 wrote to memory of 2768	2888	rundll32.exe	30
PID 2888 wrote to memory of 2768	2888	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Lossless Scaling 2.9\Shaders\RCAS.cso"
1⤵
- Suspicious use of WriteProcessMemory
PID:2184
- 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\RCAS.cso
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2888
- - 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\RCAS.cso"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2768

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
cb4a7a8aca5ee48724dfc9220b87d0fb

SHA1
a330fb0393cbc079dafe83560ce00631268c7fde

SHA256
abc31eb107625aab1156abfe1d844e05e9e0bf585358183393bc25c27451108b

SHA512
65469de714fb732f6692ca2c7ec9598b2df5def67b584eb2b943a98f38b73bc5a9367a1ffcd73fdac24df7b65f7b8d39bacff3ffb066a80da971ad4d88d75c0e

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