e10e4e255af0ba3293aed0222096b70d627a0a8217f1d3d76c2d6813e3074144

Analysis

max time kernel
121s
max time network
129s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
20/04/2024, 21:04

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General

Target

chrome_100_percent.pak
Size

126KB
MD5

8626e1d68e87f86c5b4dabdf66591913
SHA1

4cd7b0ac0d3f72587708064a7b0a3beca3f7b81c
SHA256

2caa1da9b6a6e87bdb673977fee5dd771591a1b6ed5d3c5f14b024130a5d1a59
SHA512

03bcd8562482009060f249d6a0dd7382fc94d669a2094dec08e8d119be51bef2c3b7b484bb5b7f805ae98e372dab9383a2c11a63ab0f5644146556b1bb9a4c99
SSDEEP

3072:AEKzwqCT4weSxQCS/qGTL2o418Gb0+VRLf0ld0GY3cQ39Vm2I:AEKzwt4hC4/rK18Gb0OV8ld0GecQ3f2

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\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_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-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.pak	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2324	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2324	AcroRd32.exe
2324	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 2812	1692	cmd.exe	29
PID 1692 wrote to memory of 2812	1692	cmd.exe	29
PID 1692 wrote to memory of 2812	1692	cmd.exe	29
PID 2812 wrote to memory of 2324	2812	rundll32.exe	30
PID 2812 wrote to memory of 2324	2812	rundll32.exe	30
PID 2812 wrote to memory of 2324	2812	rundll32.exe	30
PID 2812 wrote to memory of 2324	2812	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:1692
- 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:2812
- - 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:2324

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
b96cb00de245372bbc98a2b294d2c3ea

SHA1
12ef2db77d37f80f6053f995a8c95470151d622d

SHA256
957b7100c66478565aea1515a91a76a3cda409cfa3a798767eebbc273a7860d6

SHA512
4f82d31a61c469e6442d394e0f7d92bdccbe4c46d3d446fc2d927bc2c808f1beb2ef4236c097f1320a7b872dfdefcadd7bd8de59fc7a74d418729a7b0acd7420

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