ae5c9711a2a1d7480ff3a4893f1ae8ac3d2fd39ec869f08685600ef09cf79825

Analysis

max time kernel
125s
max time network
142s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-02-2024 18:16

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General

Target

resources/app.asar
Size

34.3MB
MD5

f0447dc326b3de69dfc474a80a925dd5
SHA1

1f4641a7fb588aa27acf4f2da9adec2af28c18a8
SHA256

c72589ebc010ab23f1e268e5787ca78f0acfd1e67d0e381294c6d46a72301574
SHA512

9a5d7155f1d2a6c6ffbb8b7ed958bb3b69a9d4e77a6bf428436de0afb8f4e4621828a58cc0c648066074ff1283caede14d08dc319943ff1baab88e2c555c2b34
SSDEEP

98304:cuACM1/J2C2fpuwKRcySvu6vtP6bvvAxJjwD3yWN8eVwgbA4De+FDIoZGdIy4nOJ:3ACMx4tu/mtP6kv5P7jzkzXSUGRd

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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\asar_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.asar\ = "asar_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\asar_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\asar_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\asar_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\asar_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.asar	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\asar_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
2640	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2640	AcroRd32.exe
2640	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 2688	2612	cmd.exe	29
PID 2612 wrote to memory of 2688	2612	cmd.exe	29
PID 2612 wrote to memory of 2688	2612	cmd.exe	29
PID 2688 wrote to memory of 2640	2688	rundll32.exe	30
PID 2688 wrote to memory of 2640	2688	rundll32.exe	30
PID 2688 wrote to memory of 2640	2688	rundll32.exe	30
PID 2688 wrote to memory of 2640	2688	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\resources\app.asar
1⤵
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\resources\app.asar
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2688
- - 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\resources\app.asar"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2640

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
037e101d350c5bd6fffe54b6c171ba9f

SHA1
0a26fcf75bb784e6839e61236e076587be599e82

SHA256
c38f75d8ba73f07d7dcaec06e19d5899612d89359719f6ee73aed2574411eba2

SHA512
02a1fb6aa265f341c95c17b92ede713ecbaabbba7c8ea848cddd40f3703d930eaf476cce8df5c69836ef048bf369156eedcb87473e268ba8fbdd4b5d5b172246

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