071606576abbd250bb5b241ac6989d65eb87f1b3955ab180dcf8a4ce642af73f

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
10-10-2023 15:43

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General

Target

ymehvz.au3
Size

102KB
MD5

151711041ee1619088258f05a5d3bd5b
SHA1

d2047aaf530ce0db076ea7cc7e548fd5a35cee55
SHA256

ead5d943a69f2d8641612415c77ad26daa6d53e1c6ea0270a91d3121eafd943d
SHA512

1085c381dc8f97353bed29e96a10a2e8ba4a6df761c2af56f9cced5cc6b49c80c388e280a2d53b09e20b4e19f1bdcc813d687d52f7f31679f6ee1c84c23037a1
SSDEEP

1536:r2ur2+jAWjT69uDQcqaJsggAcqbTkhXNZmad52MAONXxrZGJqT6kOjZ9X36:6uqWf98cqpAFPoFFAexcgNY9H6

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
Key created	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\au3_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\.au3	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\.au3\ = "au3_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\au3_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\au3_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\au3_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\au3_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3750544865-3773649541-1858556521-1000_CLASSES\au3_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
2592	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2592	AcroRd32.exe
2592	AcroRd32.exe
2592	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2616	2408	cmd.exe	29
PID 2408 wrote to memory of 2616	2408	cmd.exe	29
PID 2408 wrote to memory of 2616	2408	cmd.exe	29
PID 2616 wrote to memory of 2592	2616	rundll32.exe	30
PID 2616 wrote to memory of 2592	2616	rundll32.exe	30
PID 2616 wrote to memory of 2592	2616	rundll32.exe	30
PID 2616 wrote to memory of 2592	2616	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\ymehvz.au3
1⤵
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\ymehvz.au3
  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\ymehvz.au3"
    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
bc3a177fc3cbd42bf59453ae1b960d03

SHA1
6904755817af4a281c36bf8c93c5c6401541802e

SHA256
57d858d6cc6ceb7825b4d1dd0cecbdbd50269d79f01fcab838609852827a73c1

SHA512
15584e49f044a12b49fcc43165414de2c90d26405377a22799e07384f94ce9b972c5d2a88470a9ad5ee85d7726b7fddae113ebf2b50f49dc3b5e59b976eab7e9

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