b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029

Analysis

max time kernel
318s
max time network
387s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
24-11-2022 20:19

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General

Target

b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029.exe
Size

502KB
MD5

37b4e59d885b1497688c32871a13c592
SHA1

0deb2d0c55e654877b0e131687c05ae45dd71022
SHA256

b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029
SHA512

a911394c2c5f75a7d7ce38edddfa5d640011dc883e9360a95be2faf746ba7094f12775f4a057a3ae97ce17d2947cdc4964db1ce63bd898a910f927e4971211f1
SSDEEP

6144:BrLbS/QTjhUqBfxrwEnuNcSsm7IoYGW0VvBXCAt6kihwE+VDpJYWmlwnx9bH7:BrLQtqB5urTIoYWBQk1E+VF9mOx9X

Score

9^/10

Malware Config

Signatures

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Windows Update.exe	MailPassView
C:\Users\Admin\AppData\Roaming\Windows Update.exe	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Windows Update.exe	WebBrowserPassView
C:\Users\Admin\AppData\Roaming\Windows Update.exe	WebBrowserPassView

Nirsoft 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\Windows Update.exe	Nirsoft
C:\Users\Admin\AppData\Roaming\Windows Update.exe	Nirsoft

Executes dropped EXE 1 IoCs

Processes:

Windows Update.exe

pid process

2372 Windows Update.exe

pid	process
2372	Windows Update.exe

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

Processes:

b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029.exe

description	pid	process	target process
PID 2648 wrote to memory of 2372	2648	b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029.exe	Windows Update.exe
PID 2648 wrote to memory of 2372	2648	b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029.exe	Windows Update.exe
PID 2648 wrote to memory of 2372	2648	b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029.exe	Windows Update.exe

C:\Users\Admin\AppData\Local\Temp\b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029.exe
"C:\Users\Admin\AppData\Local\Temp\b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2648

C:\Users\Admin\AppData\Roaming\Windows Update.exe
"C:\Users\Admin\AppData\Roaming\Windows Update.exe"
2⤵
- Executes dropped EXE
PID:2372

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

C:\Users\Admin\AppData\Roaming\Windows Update.exe
Filesize
502KB

MD5
37b4e59d885b1497688c32871a13c592

SHA1
0deb2d0c55e654877b0e131687c05ae45dd71022

SHA256
b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029

SHA512
a911394c2c5f75a7d7ce38edddfa5d640011dc883e9360a95be2faf746ba7094f12775f4a057a3ae97ce17d2947cdc4964db1ce63bd898a910f927e4971211f1

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Update.exe
Filesize
502KB

MD5
37b4e59d885b1497688c32871a13c592

SHA1
0deb2d0c55e654877b0e131687c05ae45dd71022

SHA256
b70e27589effbc110a943465f95d79ee73419c4dc3e0d191cb08175ebcf5c029

SHA512
a911394c2c5f75a7d7ce38edddfa5d640011dc883e9360a95be2faf746ba7094f12775f4a057a3ae97ce17d2947cdc4964db1ce63bd898a910f927e4971211f1

Download Submit
memory/2372-134-0x0000000000000000-mapping.dmp

Download
memory/2372-138-0x00000000749A0000-0x0000000074F51000-memory.dmp

Filesize
5.7MB

Download
memory/2648-132-0x00000000749A0000-0x0000000074F51000-memory.dmp

Filesize
5.7MB

Download
memory/2648-133-0x00000000749A0000-0x0000000074F51000-memory.dmp

Filesize
5.7MB

Download
memory/2648-137-0x00000000749A0000-0x0000000074F51000-memory.dmp

Filesize
5.7MB

Download