d847b98ee4ccdadf0a406fa42cac1de6132ed595bc3986c54e22a1b46e178aaa

Analysis

max time kernel
122s
max time network
129s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-04-2024 10:45

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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-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2592	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2592	AcroRd32.exe
2592	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1444 wrote to memory of 1660	1444	cmd.exe	29
PID 1444 wrote to memory of 1660	1444	cmd.exe	29
PID 1444 wrote to memory of 1660	1444	cmd.exe	29
PID 1660 wrote to memory of 2592	1660	rundll32.exe	30
PID 1660 wrote to memory of 2592	1660	rundll32.exe	30
PID 1660 wrote to memory of 2592	1660	rundll32.exe	30
PID 1660 wrote to memory of 2592	1660	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:1444
- 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:1660
- - 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:2592

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
c9f3c1d618c8d85e3cc83643d0f4992c

SHA1
6863a4e5bfe0ba666b5963a88a90b2e5fd9f363f

SHA256
1505e670a80b415a9751740344182aa4e45c65c1ea6b302d572b531707151815

SHA512
084dda7e849f79440639c0e088fdf7dbae1d93faf3085f2b2bd90c95c7c4ec6f502ffca603033774e1458befb365404d1ab5fcf691f645d72c526e42dcf18bc4

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