f37c0297f54bc509b60046fa825ec4f800a001efc2922525fb5a20e7da96dc0d

Analysis

max time kernel
121s
max time network
128s
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/NIS_NV.cso
Size

26KB
MD5

8dc995333ce42234aacc3c2a35ae7da4
SHA1

f6d37c22ddd225477ca88b32b596ffe618132a75
SHA256

fc8f0300fec6f80250b8ec605265ba91c80f1d897fe799004f2cb95e14ca3d02
SHA512

bbe96ac56e20dc922ae428d005b637e2f8ef9eb768a3046b5a9f6f4661d5747104569d7a6191436db05c1480f24254b83a3cfe69969d0e9f473a32d42ee9e65b
SSDEEP

192:x7cc3/rPMsUO3vUSQlu2Qk5NSVGb04Yn/6K6ynCkC0iEiUrUz08f4GdWZvi9kStx:x7/Pr3JwAQVsIB

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-1-5-21-39690363-730359138-1046745555-1000_CLASSES\cso_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_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-1-5-21-39690363-730359138-1046745555-1000_CLASSES\cso_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\cso_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\.cso	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\cso_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\.cso\ = "cso_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\cso_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2284	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2284	AcroRd32.exe
2284	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2448 wrote to memory of 2748	2448	cmd.exe	29
PID 2448 wrote to memory of 2748	2448	cmd.exe	29
PID 2448 wrote to memory of 2748	2448	cmd.exe	29
PID 2748 wrote to memory of 2284	2748	rundll32.exe	30
PID 2748 wrote to memory of 2284	2748	rundll32.exe	30
PID 2748 wrote to memory of 2284	2748	rundll32.exe	30
PID 2748 wrote to memory of 2284	2748	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Lossless Scaling 2.9\Shaders\NIS_NV.cso"
1⤵
- Suspicious use of WriteProcessMemory
PID:2448
- 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_NV.cso
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2748
- - 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_NV.cso"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2284

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
7cd3de20a25d195a13d8d57e1dfdb273

SHA1
d1420e5af283f10a4ea68a9827d7b11753d7f9b5

SHA256
ba22fbb21251e4361e7d43351cfe1c8aa00ae76a9bcd70be593159b5e8a1896d

SHA512
17d862963942eccd111513d51ccf64f53c77c2ffc98d50e68f79c249d59c22fe879466df0a52123caba54d28aeb80b971f6cc8eb93b81bd3d8f192abe8c1d7e0

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