ef179f483aaa529e930f32ff5adb5b156cd56488c398797251bb992a5ca19e93

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
28-02-2024 04:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

chrome_100_percent.pak
Size

163KB
MD5

4fc6564b727baa5fecf6bf3f6116cc64
SHA1

6ced7b16dc1abe862820dfe25f4fe7ead1d3f518
SHA256

b7805392bfce11118165e3a4e747ac0ca515e4e0ceadab356d685575f6aa45fb
SHA512

fa7eab7c9b67208bd076b2cbda575b5cc16a81f59cc9bba9512a0e85af97e2f3adebc543d0d847d348d513b9c7e8bef375ab2fef662387d87c82b296d76dffa2
SSDEEP

3072:IOzwJCGIekwdLpsXYFAXg6IL2o418Gb0+VRLf0ld0GY3cQ3ERVm2I:IOzw1Iekam5QpK18Gb0OV8ld0GecQ3Ey

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-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pak_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
2636	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2636	AcroRd32.exe
2636	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 2616	1976	cmd.exe	29
PID 1976 wrote to memory of 2616	1976	cmd.exe	29
PID 1976 wrote to memory of 2616	1976	cmd.exe	29
PID 2616 wrote to memory of 2636	2616	rundll32.exe	30
PID 2616 wrote to memory of 2636	2616	rundll32.exe	30
PID 2616 wrote to memory of 2636	2616	rundll32.exe	30
PID 2616 wrote to memory of 2636	2616	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2616
- - 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\chrome_100_percent.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2636

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
0c9e41ec59f02b71f411ef2d8fc255d5

SHA1
97d2d67633e6a2d8834dfef7f2b7eec735e0b30f

SHA256
1fd4f05a17c2a34f76557ee26e391ca3a347fb9d19db6edb15652d828f92242e

SHA512
3f52ef814ecf0ba68af726faeb2eab2dcbf4a7d5cf5f0f931990a4ce79e0642cc238a09cf79727508395df7383d7c11afbc36c4088ac66ca627cd8016c895227

Download Submit