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Analysis
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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
Static task
static1
Behavioral task
behavioral1
Sample
a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c.exe
Resource
win10v2004-20220901-en
General
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Target
a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c.exe
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Size
11KB
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MD5
0143fe813af9f81f88ab434d5e740bc0
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SHA1
6b71221abca275f56870d84f8a5349c3c7adaf86
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SHA256
a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c
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SHA512
e7e4111a6418fde1f095b5d53e9ad61637a1fe010d67773d1435a194c41cb2a1fb7ca5cc76dab84a35f129d5664f11c1f485780091c97934543fb0b328554ac3
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SSDEEP
192:vZH+V+cXezwuG2GdEXZKAOD10HTsL9CnfznLgMq24iGY:x+IcXeUuG2GdnAOmO92zUMqD8
Malware Config
Signatures
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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.
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
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.
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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
Processes
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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
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
11KB
MD50143fe813af9f81f88ab434d5e740bc0
SHA16b71221abca275f56870d84f8a5349c3c7adaf86
SHA256a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c
SHA512e7e4111a6418fde1f095b5d53e9ad61637a1fe010d67773d1435a194c41cb2a1fb7ca5cc76dab84a35f129d5664f11c1f485780091c97934543fb0b328554ac3
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Filesize
11KB
MD50143fe813af9f81f88ab434d5e740bc0
SHA16b71221abca275f56870d84f8a5349c3c7adaf86
SHA256a5a3be4bc54e36fe750efaefe82d6699b15f0aeb1e855123bed6408e9b7d935c
SHA512e7e4111a6418fde1f095b5d53e9ad61637a1fe010d67773d1435a194c41cb2a1fb7ca5cc76dab84a35f129d5664f11c1f485780091c97934543fb0b328554ac3