a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c

Analysis

max time kernel
118s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2022, 13:59

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General

Target

a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c.exe
Size

11KB
MD5

0143fe813af9f81f88ab434d5e740bc0
SHA1

6b71221abca275f56870d84f8a5349c3c7adaf86
SHA256

a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c
SHA512

e7e4111a6418fde1f095b5d53e9ad61637a1fe010d67773d1435a194c41cb2a1fb7ca5cc76dab84a35f129d5664f11c1f485780091c97934543fb0b328554ac3
SSDEEP

192:vZH+V+cXezwuG2GdEXZKAOD10HTsL9CnfznLgMq24iGY:x+IcXeUuG2GdnAOmO92zUMqD8

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4156	exxplorer.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\exxplorer.exe = "C:\\Users\\Admin\\AppData\\Roaming\\exxplorer.exe"	exxplorer.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run	exxplorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\exxplorer.exe = "C:\\Users\\Admin\\AppData\\Roaming\\exxplorer.exe"	exxplorer.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	exxplorer.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

description	pid	Process	procid_target
PID 2340 wrote to memory of 4156	2340	a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c.exe	82
PID 2340 wrote to memory of 4156	2340	a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c.exe	82
PID 2340 wrote to memory of 4156	2340	a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c.exe	82

C:\Users\Admin\AppData\Local\Temp\a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c.exe
"C:\Users\Admin\AppData\Local\Temp\a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Users\Admin\AppData\Roaming\exxplorer.exe
  "C:\Users\Admin\AppData\Roaming\exxplorer.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  PID:4156

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

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Downloads

C:\Users\Admin\AppData\Roaming\exxplorer.exe

Filesize
11KB

MD5
0143fe813af9f81f88ab434d5e740bc0

SHA1
6b71221abca275f56870d84f8a5349c3c7adaf86

SHA256
a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c

SHA512
e7e4111a6418fde1f095b5d53e9ad61637a1fe010d67773d1435a194c41cb2a1fb7ca5cc76dab84a35f129d5664f11c1f485780091c97934543fb0b328554ac3

Download Submit
C:\Users\Admin\AppData\Roaming\exxplorer.exe

Filesize
11KB

MD5
0143fe813af9f81f88ab434d5e740bc0

SHA1
6b71221abca275f56870d84f8a5349c3c7adaf86

SHA256
a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c

SHA512
e7e4111a6418fde1f095b5d53e9ad61637a1fe010d67773d1435a194c41cb2a1fb7ca5cc76dab84a35f129d5664f11c1f485780091c97934543fb0b328554ac3

Download Submit