eacd5ed86a8ddd368a1089c7b97b791258e3eeb89c76c6da829b58d469f654b2

Analysis

max time kernel
1563s
max time network
1574s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
27-05-2024 18:19

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General

Target

MrsMajor 3.0.7z
Size

234KB
MD5

fedb45ddbd72fc70a81c789763038d81
SHA1

f1ed20c626d0a7ca2808ed768e7d7b319bc4c84a
SHA256

eacd5ed86a8ddd368a1089c7b97b791258e3eeb89c76c6da829b58d469f654b2
SHA512

813c0367f3aeceea9be02ffad4bfa8092ea44b428e68db8f3f33e45e4e5e53599d985fa79a708679b6957cbd04d9b9d67b288137fa71ac5a59e917b8792c8298
SSDEEP

6144:HMMAgnxjSgdHCueEVIzAMAcqXvYEC86TFSQ:HagxjSg1xrIzAMAcuI5TFT

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 2 IoCs

Processes:

rundll32.exerundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2320 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2320 AcroRd32.exe
2320 AcroRd32.exe

pid	process
2320	AcroRd32.exe

pid	process
2320	AcroRd32.exe
2320	AcroRd32.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

cmd.exerundll32.exerundll32.exe

description	pid	process	target process
PID 2072 wrote to memory of 2672	2072	cmd.exe	rundll32.exe
PID 2072 wrote to memory of 2672	2072	cmd.exe	rundll32.exe
PID 2072 wrote to memory of 2672	2072	cmd.exe	rundll32.exe
PID 2672 wrote to memory of 2728	2672	rundll32.exe	rundll32.exe
PID 2672 wrote to memory of 2728	2672	rundll32.exe	rundll32.exe
PID 2672 wrote to memory of 2728	2672	rundll32.exe	rundll32.exe
PID 2728 wrote to memory of 2320	2728	rundll32.exe	AcroRd32.exe
PID 2728 wrote to memory of 2320	2728	rundll32.exe	AcroRd32.exe
PID 2728 wrote to memory of 2320	2728	rundll32.exe	AcroRd32.exe
PID 2728 wrote to memory of 2320	2728	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\MrsMajor 3.0.7z"
1⤵
- Suspicious use of WriteProcessMemory
PID:2072

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\MrsMajor 3.0.7z
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2672

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\MrsMajor 3.0.7z
3⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2728

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\MrsMajor 3.0.7z"
4⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2320

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
e5c0df08bb4646e3c205ccefae5a063e

SHA1
1e5ed3876a5915af883553e264409d1dbdce0429

SHA256
d0ef8a15fdb0b330d49037a33c923a88bdafc9ce2210b394c19b0d4a48e69189

SHA512
5df190d228044d034d890ad9ace7f105434065e7fe811042e56e684cbdbf57fd5ed855ae12c7e5591c88ad0f5600d64fb235f634ae455a4239528ea2ca11c523

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