Analysis
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max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230831-en -
resource tags
arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system -
submitted
01-09-2023 16:52
Static task
static1
Behavioral task
behavioral1
Sample
lz_JC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
lz_JC.exe
Resource
win10v2004-20230831-en
General
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Target
lz_JC.exe
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Size
388KB
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MD5
4ff84ca1c02088f313c97694244cb2a4
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SHA1
d2ffff7d201ac6236d3d091047f498c11bae00d6
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SHA256
f3126ddd86d1e048db68f22cb1de5de871282bbd5764c4c77867042c8f1aab93
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SHA512
0ab79b098be51c4035871e1b85bb815954a0c936fb9bc5bc598ac824e1c4e45d5f6b56f4f3e4a063c82a91ab30cb953018abc9161e3b2cfdf785d97d6a09d00b
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SSDEEP
12288:tCspLdeVEn/oEehNiNsF9hS2Oga+nqgU+1kkqabCtXSXNcqye9cBz:tCULoVEn/oEsA/2OgVqgU+1kkqabCtXB
Malware Config
Extracted
bitrat
1.38
rornfl12.duckdns.org:3072
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communication_password
81dc9bdb52d04dc20036dbd8313ed055
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install_dir
chrome
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install_file
updater
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tor_process
tor
Signatures
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Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1980726966-773384374-2129981223-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\updater = "C:\\Users\\Admin\\AppData\\Local\\chrome\\updater" MSBuild.exe Set value (str) \REGISTRY\USER\S-1-5-21-1980726966-773384374-2129981223-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\updater = "C:\\Users\\Admin\\AppData\\Local\\chrome\\updaterԀ" MSBuild.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
pid Process 2124 MSBuild.exe 2124 MSBuild.exe 2124 MSBuild.exe 2124 MSBuild.exe 2124 MSBuild.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1200 set thread context of 2124 1200 lz_JC.exe 89 -
Checks processor information in registry 2 TTPs 3 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 svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString svchost.exe Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 svchost.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU svchost.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1200 lz_JC.exe Token: SeShutdownPrivilege 2124 MSBuild.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2124 MSBuild.exe 2124 MSBuild.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1200 wrote to memory of 2124 1200 lz_JC.exe 89 PID 1200 wrote to memory of 2124 1200 lz_JC.exe 89 PID 1200 wrote to memory of 2124 1200 lz_JC.exe 89 PID 1200 wrote to memory of 2124 1200 lz_JC.exe 89 PID 1200 wrote to memory of 2124 1200 lz_JC.exe 89 PID 1200 wrote to memory of 2124 1200 lz_JC.exe 89 PID 1200 wrote to memory of 2124 1200 lz_JC.exe 89 PID 1200 wrote to memory of 2124 1200 lz_JC.exe 89 PID 1200 wrote to memory of 2124 1200 lz_JC.exe 89 PID 1200 wrote to memory of 2124 1200 lz_JC.exe 89 PID 1200 wrote to memory of 2124 1200 lz_JC.exe 89 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p1⤵
- Checks processor information in registry
- Enumerates system info in registry
PID:4924
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C:\Users\Admin\AppData\Local\Temp\lz_JC.exe"C:\Users\Admin\AppData\Local\Temp\lz_JC.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1200 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe2⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2124
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