Analysis
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max time kernel
185s -
max time network
183s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
02/12/2022, 00:43
Static task
static1
Behavioral task
behavioral1
Sample
31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe
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Size
200KB
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MD5
2b0a69238729fba54f3fb3d201466160
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SHA1
a17a47aac0b0c22bcdfdf06c99161824e44bc11b
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SHA256
31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c
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SHA512
a6e0893ce3cb4c0d07dc172aab6c871f96f19dae2ed38f93f77b85e84eba6103f63db85830fa5ce8dcea62806723b98c8435975b10c3c79bea13651f6c824deb
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SSDEEP
3072:nCATo/0YxZa0tQ9nLHbB9WPliBs2HWWEakGJm9uhP:nCFTa4QxL7B9WPli+yWWEazNl
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" mztuw.exe -
Executes dropped EXE 1 IoCs
pid Process 1108 mztuw.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation 31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /o" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /y" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /w" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /a" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /b" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /w" 31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /g" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /i" mztuw.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /l" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /d" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /h" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /e" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /c" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /t" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /u" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /x" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /z" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /f" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /q" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /k" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /s" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /p" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /r" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /j" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /v" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /m" mztuw.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mztuw = "C:\\Users\\Admin\\mztuw.exe /n" mztuw.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1940 31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe 1940 31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe 1108 mztuw.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1940 31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe 1108 mztuw.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1940 wrote to memory of 1108 1940 31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe 79 PID 1940 wrote to memory of 1108 1940 31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe 79 PID 1940 wrote to memory of 1108 1940 31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe"C:\Users\Admin\AppData\Local\Temp\31aa22b8b18dcbb1e6ee684e766e5e24990323a1552abede768881747208473c.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1940 -
C:\Users\Admin\mztuw.exe"C:\Users\Admin\mztuw.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1108
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
200KB
MD54a5ae2a4630692f5fbcdbd45bd6d0010
SHA1e43d65e12e10458938873129c9ac3770c47140b2
SHA256db482b63d0c48eaf5c3fb6a13330703b25e955958bb06cbc16b5a318d537ea48
SHA512f3d7f2b6462be49d7e39912c02146816969902f720566a37613109e99df19aee97d51d6bdc07670a7ecbb4d17be8ed35208896f8ccf42ba777f7ccee41403d15
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Filesize
200KB
MD54a5ae2a4630692f5fbcdbd45bd6d0010
SHA1e43d65e12e10458938873129c9ac3770c47140b2
SHA256db482b63d0c48eaf5c3fb6a13330703b25e955958bb06cbc16b5a318d537ea48
SHA512f3d7f2b6462be49d7e39912c02146816969902f720566a37613109e99df19aee97d51d6bdc07670a7ecbb4d17be8ed35208896f8ccf42ba777f7ccee41403d15