4910ce8f31a1b96b52d4e0a78274dd628e709885b475444817183ef895fbde73

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-04-2024 11:03

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General

Target

CS2ServerPicker.pdb
Size

129KB
MD5

d3dc0156c35e4379d3431706fd7411f8
SHA1

5f1b716e3cebb56ea56af5e897c73028a29dbcd8
SHA256

3281b58e7a0bea818c224044aed8e5243146070cd23a55dedad697b2895773c3
SHA512

d204be0272270a5ec8b5ef0254585581d2ff7559362f19b945ac288e19028ce578a59724ab906bdee57af0985cd642985a6b05681ebddb32477758650b881e99
SSDEEP

1536:mzVlfybzEslOSY/oiESVhyKeYBR/+6yOAd3VhS4OAd:mXfdsYt/vFhyKeYBR/+/O8VO8

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-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.pdb\ = "pdb_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pdb_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.pdb	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pdb_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pdb_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pdb_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pdb_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pdb_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2208	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2208	AcroRd32.exe
2208	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 996 wrote to memory of 2516	996	cmd.exe	29
PID 996 wrote to memory of 2516	996	cmd.exe	29
PID 996 wrote to memory of 2516	996	cmd.exe	29
PID 2516 wrote to memory of 2208	2516	rundll32.exe	30
PID 2516 wrote to memory of 2208	2516	rundll32.exe	30
PID 2516 wrote to memory of 2208	2516	rundll32.exe	30
PID 2516 wrote to memory of 2208	2516	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\CS2ServerPicker.pdb
1⤵
- Suspicious use of WriteProcessMemory
PID:996
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\CS2ServerPicker.pdb
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2516
- - 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\CS2ServerPicker.pdb"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2208

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
84e558674d8160a6abd2ca4f217b5438

SHA1
6c7db72cdfac5f4834d3c8aa7798c6bacdc9f6e8

SHA256
7423a701dbf5e29a7adc4bf8cb6b9b95e6d1278e1b908df9c5d96b330008b636

SHA512
5a612d6581197dbf616f4dc770f5282b60fccb352060c012089a91c0ff66f72c9b43d46cdbd7ee96239ed25fb24fb84d28fa634a1cdc8a96704ebe7c8548c8ab

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