a1b011bf9dbbcfcae125325e89b4b91fa980129598b203f3842b72de86ac4726

Analysis

max time kernel
153s
max time network
171s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06-12-2022 23:03

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General

Target

a1b011bf9dbbcfcae125325e89b4b91fa980129598b203f3842b72de86ac4726.exe
Size

608KB
MD5

3ace83e9f5cc9b9a14a4fbb4e081d74d
SHA1

975cf74ce11c0dfdee56618554d6585190c02ab6
SHA256

a1b011bf9dbbcfcae125325e89b4b91fa980129598b203f3842b72de86ac4726
SHA512

90da92e957a512362ce8d42cd1fc12609efb19ed01667e5cd9dd16e87947dc8c4510f0ce9517076e2c5b1a3f6d3dd4cf5058b9b4215b9363e43412cff9990f49
SSDEEP

12288:/WgwX8CbuxXzNvhPszGXZyIW3Fl0Br52e7RGKybMZqCXW:g8CbuxXzlh4GCMBr52WGKyb4hW

Score

8^/10

persistence upx

Malware Config

Signatures

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3028-132-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/memory/3028-133-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	a1b011bf9dbbcfcae125325e89b4b91fa980129598b203f3842b72de86ac4726.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices	a1b011bf9dbbcfcae125325e89b4b91fa980129598b203f3842b72de86ac4726.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices\mmtask1 = "C:\\Windows\\system32\\mmtask1.exe"	a1b011bf9dbbcfcae125325e89b4b91fa980129598b203f3842b72de86ac4726.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\mmtask1.exe	a1b011bf9dbbcfcae125325e89b4b91fa980129598b203f3842b72de86ac4726.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

C:\Users\Admin\AppData\Local\Temp\a1b011bf9dbbcfcae125325e89b4b91fa980129598b203f3842b72de86ac4726.exe
"C:\Users\Admin\AppData\Local\Temp\a1b011bf9dbbcfcae125325e89b4b91fa980129598b203f3842b72de86ac4726.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
PID:3028

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3028-132-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3028-133-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download