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Analysis
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max time kernel
146s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
05/03/2024, 06:47
Behavioral task
behavioral1
Sample
b40dcdeb387d82b8061905dcc4d99599.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
b40dcdeb387d82b8061905dcc4d99599.exe
Resource
win10v2004-20240226-en
General
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Target
b40dcdeb387d82b8061905dcc4d99599.exe
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Size
85KB
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MD5
b40dcdeb387d82b8061905dcc4d99599
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SHA1
0c69673b4a0f9daaa8fb5741f7267609768ff464
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SHA256
e771c5bef31c1955ee0e87e9220fe5d14db5507f28c46e92f0d4272daf233884
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SHA512
0a92a63572774edadbc832ea359c1576fbcd11db793f5ea73d6af35f7e6b7e3d0a1ab48213c09144be34951153d8b07c14ed9558175d3bcceadcaa95ad97a22c
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SSDEEP
1536:SKcR4mjD9r823FBBXVl/skYzGwG0Z9OivBtLy0+E8+khn7a1C+gx0XnIVOEJ8:SKcWmjRrz3tXjUdGj0Z9OivLWocEux7s
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 1928 ZiOIopyNksOKwB7.exe 1408 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/4736-0-0x0000000000390000-0x00000000003A7000-memory.dmp upx behavioral2/files/0x0007000000023232-6.dat upx behavioral2/memory/4736-8-0x0000000000390000-0x00000000003A7000-memory.dmp upx behavioral2/memory/1408-9-0x0000000000F20000-0x0000000000F37000-memory.dmp upx behavioral2/files/0x0003000000022768-13.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" b40dcdeb387d82b8061905dcc4d99599.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 b40dcdeb387d82b8061905dcc4d99599.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 4736 b40dcdeb387d82b8061905dcc4d99599.exe Token: SeDebugPrivilege 1408 CTS.exe Token: SeBackupPrivilege 4844 dw20.exe Token: SeBackupPrivilege 4844 dw20.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 4736 wrote to memory of 1928 4736 b40dcdeb387d82b8061905dcc4d99599.exe 90 PID 4736 wrote to memory of 1928 4736 b40dcdeb387d82b8061905dcc4d99599.exe 90 PID 4736 wrote to memory of 1408 4736 b40dcdeb387d82b8061905dcc4d99599.exe 92 PID 4736 wrote to memory of 1408 4736 b40dcdeb387d82b8061905dcc4d99599.exe 92 PID 4736 wrote to memory of 1408 4736 b40dcdeb387d82b8061905dcc4d99599.exe 92 PID 1928 wrote to memory of 4844 1928 ZiOIopyNksOKwB7.exe 94 PID 1928 wrote to memory of 4844 1928 ZiOIopyNksOKwB7.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\b40dcdeb387d82b8061905dcc4d99599.exe"C:\Users\Admin\AppData\Local\Temp\b40dcdeb387d82b8061905dcc4d99599.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4736 -
C:\Users\Admin\AppData\Local\Temp\ZiOIopyNksOKwB7.exeC:\Users\Admin\AppData\Local\Temp\ZiOIopyNksOKwB7.exe2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1928 -
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exedw20.exe -x -s 8163⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:4844
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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:1408
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
354KB
MD5c21ee93e032e67d43c2b52bf40067493
SHA148f796e5f104f364ff24557cb510c08eefd706b5
SHA25697d5760bc0e4bf4fa6ca88db7aa7e5b90b7db06c9e3144db158801c50bdfa039
SHA512b9de8caafbc1f0344c20da3100615fee6d8ad899d6885edc738cf3f61a4abcd5483792ada3ac7d2c7a973e22ea8a9caff41153d78ac19c87fdb8ebeace425492
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Filesize
56KB
MD5e115521ba14b75f53dcdff087ec6898f
SHA187103a892bb514a93d485fba221bacb9da3aae25
SHA25659b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29
SHA512ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a
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Filesize
29KB
MD570aa23c9229741a9b52e5ce388a883ac
SHA1b42683e21e13de3f71db26635954d992ebe7119e
SHA2569d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2
SHA512be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5