2581e66c6451813e2b5ffd52573e7c6e92ce1e45c0a4ce71a7a524e194170971

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
02/08/2023, 07:16

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General

Target

rsa2.au3
Size

754KB
MD5

9720ca39505213d841f6285a8138411f
SHA1

ac677d7a325085bbed8becb73374ef9c37eba68e
SHA256

82cded542f1769d4962979d307e1eec747ad83a25691227a7395d2286547e02c
SHA512

00ac130f350eb25416ec2e1c174e53d759867cdf6859a60022abbc8642111275589b482ab4b2ca25990906a2feb4a5a50e40533b6a273f7a2ab3575e66717fee
SSDEEP

12288:BIk8KnbVr8q2kIUUVR47VT6WNfZtbff2IW0nzQNIeBaEl20E:BI6bVgqIuQmvbfWGzgfaElRE

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-1-5-21-3408354897-1169622894-3874090110-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\au3_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\au3_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\.au3	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\.au3\ = "au3_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\au3_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\au3_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\au3_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_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
2864	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2864	AcroRd32.exe
2864	AcroRd32.exe
2864	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2472	2668	cmd.exe	29
PID 2668 wrote to memory of 2472	2668	cmd.exe	29
PID 2668 wrote to memory of 2472	2668	cmd.exe	29
PID 2472 wrote to memory of 2864	2472	rundll32.exe	30
PID 2472 wrote to memory of 2864	2472	rundll32.exe	30
PID 2472 wrote to memory of 2864	2472	rundll32.exe	30
PID 2472 wrote to memory of 2864	2472	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\rsa2.au3
1⤵
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\rsa2.au3
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2472
- - 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\rsa2.au3"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2864

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

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Downloads

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

Filesize
3KB

MD5
52564c14c6e4728a9fad0daa0fe7612a

SHA1
1b722f0ba55d1c3ea9aaa1654a6e97c00e05b4aa

SHA256
c3235e33bc494f221d31f2ca24aeba4eed5a632ce50568d65f9df266580adfe4

SHA512
5422c19b38cbaf760b80e4da31b778013fcd4b158baad2d42455f5576c59930f2b3c72604993d745a4fc443a75d214f4f7288b66ccb67366efb24f9dd9e26629

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