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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
04/03/2024, 14:08
Behavioral task
behavioral1
Sample
b252f36350548b10cd4a73ed9f681ec5.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
b252f36350548b10cd4a73ed9f681ec5.exe
Resource
win10v2004-20240226-en
General
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Target
b252f36350548b10cd4a73ed9f681ec5.exe
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Size
85KB
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MD5
b252f36350548b10cd4a73ed9f681ec5
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SHA1
ef86410be6dfbc13624a9b9db188f70b15d13560
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SHA256
9099bbe761df281236d333dc2827f8101ff42236e2af32e87f60c9e1e6b8067e
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SHA512
17d00f58c8f37a5841dc7cc8cdf3c3fc8e9280583c7151e0d94bbed50ba153488f6a7a9d2969adfa3ab291169f9ed855f28523dc7e7472f09a809c45ef9974c3
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SSDEEP
1536:SKcR4mjD9r823FXk+Xb9H/mVlwbe2au5EcWve3dMIZuiGe0:SKcWmjRrz3++r9HOVl/GpWsWIZSf
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 400 2lhGnVhkZIbuFyP.exe 4908 CTS.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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resource yara_rule behavioral2/memory/4500-0-0x0000000000710000-0x0000000000727000-memory.dmp upx behavioral2/files/0x000c00000002304c-7.dat upx behavioral2/memory/4500-8-0x0000000000710000-0x0000000000727000-memory.dmp upx behavioral2/memory/4908-9-0x00000000003A0000-0x00000000003B7000-memory.dmp upx behavioral2/files/0x0006000000016976-12.dat upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" b252f36350548b10cd4a73ed9f681ec5.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" CTS.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\CTS.exe b252f36350548b10cd4a73ed9f681ec5.exe File created C:\Windows\CTS.exe CTS.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 dw20.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz dw20.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString dw20.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS dw20.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU dw20.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4500 b252f36350548b10cd4a73ed9f681ec5.exe Token: SeDebugPrivilege 4908 CTS.exe Token: SeBackupPrivilege 3192 dw20.exe Token: SeBackupPrivilege 3192 dw20.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 4500 wrote to memory of 400 4500 b252f36350548b10cd4a73ed9f681ec5.exe 88 PID 4500 wrote to memory of 400 4500 b252f36350548b10cd4a73ed9f681ec5.exe 88 PID 4500 wrote to memory of 4908 4500 b252f36350548b10cd4a73ed9f681ec5.exe 90 PID 4500 wrote to memory of 4908 4500 b252f36350548b10cd4a73ed9f681ec5.exe 90 PID 4500 wrote to memory of 4908 4500 b252f36350548b10cd4a73ed9f681ec5.exe 90 PID 400 wrote to memory of 3192 400 2lhGnVhkZIbuFyP.exe 91 PID 400 wrote to memory of 3192 400 2lhGnVhkZIbuFyP.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe"C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4500 -
C:\Users\Admin\AppData\Local\Temp\2lhGnVhkZIbuFyP.exeC:\Users\Admin\AppData\Local\Temp\2lhGnVhkZIbuFyP.exe2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:400 -
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exedw20.exe -x -s 8203⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:3192
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C:\Windows\CTS.exe"C:\Windows\CTS.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4908
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
352KB
MD590eec7434f905289ae71e424907398d0
SHA1f55a4c4f4de702c4859de4146eae1b20eba3a7dc
SHA25637fea280ac04caa4edd0eaa45412c6b471950186248f02e858b2be822db49857
SHA5120ddfe9f8a039ec3ff7ff83c29b2764f8d9c35335b13e20559817a544e28cedc7def6929a9003e7d44b79697d96a970bcd8a01e31bf35c5201a4297f771816073
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Filesize
56KB
MD5e115521ba14b75f53dcdff087ec6898f
SHA187103a892bb514a93d485fba221bacb9da3aae25
SHA25659b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29
SHA512ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a
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Filesize
29KB
MD570aa23c9229741a9b52e5ce388a883ac
SHA1b42683e21e13de3f71db26635954d992ebe7119e
SHA2569d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2
SHA512be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5