Analysis
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max time kernel
184s -
max time network
195s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
16-02-2022 23:12
Static task
static1
Behavioral task
behavioral1
Sample
0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe
Resource
win10v2004-en-20220112
General
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Target
0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe
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Size
363KB
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MD5
b02be7a336dcc6635172e0d6ec24c554
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SHA1
a58b45f6ac4c4fbcf938de01ee1e585fe3715fd6
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SHA256
0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f
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SHA512
406cb5422aa0d6af2a4fc9a129a82a8665b986cc4605e593808526e88ed008565d5a8dec7830b813f8f4d3140a4fd0842619e96950625ca5423d48b08e7f685d
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6b850cafc6a52acc
https://mazedecrypt.top/6b850cafc6a52acc
Signatures
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Maze
Ransomware family also known as ChaCha.
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Drops startup file 4 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6b850cafc6a52acc.tmp 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\DECRYPT-FILES.txt 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\6b850cafc6a52acc.tmp 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops file in Program Files directory 14 IoCs
description ioc Process File opened for modification C:\Program Files\JoinDisable.ini 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Program Files\PopUnlock.wm 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Program Files\SplitOpen.emf 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Program Files (x86)\6b850cafc6a52acc.tmp 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Program Files\InstallRegister.vb 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Program Files\6b850cafc6a52acc.tmp 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File created C:\Program Files\DECRYPT-FILES.txt 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Program Files\TestBlock.ocx 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File created C:\Program Files (x86)\DECRYPT-FILES.txt 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Program Files\PopClear.nfo 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Program Files\ExitInstall.dxf 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Program Files\SearchHide.svg 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Program Files\StepPublish.htm 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe File opened for modification C:\Program Files\DisableConfirm.nfo 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz MusNotifyIcon.exe Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 MusNotifyIcon.exe -
Modifies data under HKEY_USERS 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization svchost.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2364 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe 2364 0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 1208 vssvc.exe Token: SeRestorePrivilege 1208 vssvc.exe Token: SeAuditPrivilege 1208 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe"C:\Users\Admin\AppData\Local\Temp\0f1cbf09b19fc9963742e3f60def1434fa86ac760790fb974a6b5fcd81b4881f.exe"1⤵
- Drops startup file
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:2364
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1208
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C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:1224
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p1⤵
- Modifies data under HKEY_USERS
PID:2260