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Analysis
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max time kernel
148s -
max time network
162s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
13/02/2024, 02:17
Behavioral task
behavioral1
Sample
983aa7e3a64a30fd99e86256621ff73b.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
983aa7e3a64a30fd99e86256621ff73b.exe
Resource
win10v2004-20231215-en
General
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Target
983aa7e3a64a30fd99e86256621ff73b.exe
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Size
30KB
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MD5
983aa7e3a64a30fd99e86256621ff73b
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SHA1
48f5c5b8d84be0e0a4419e0fce28bf608106ba1e
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SHA256
c6480c74c34abc54c38d99ef959693728439be2f5861276e8021b55b260624fc
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SHA512
9a48208c48975bfd06f307ec52fa8b569ba53494a87b056d5527f8fab4d93d826f2b9cc60c92b75bafaa72cc265fd2361cc99cdff8b2d97e76abad5d68d1e10b
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SSDEEP
768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFua:SKcR4mjD9r823Fua
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 4472 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/4876-0-0x0000000000760000-0x0000000000777000-memory.dmp upx behavioral2/files/0x000600000002313f-6.dat upx behavioral2/memory/4472-7-0x00000000002A0000-0x00000000002B7000-memory.dmp upx behavioral2/memory/4876-9-0x0000000000760000-0x0000000000777000-memory.dmp upx behavioral2/files/0x0007000000022556-12.dat upx behavioral2/memory/4472-31-0x00000000002A0000-0x00000000002B7000-memory.dmp 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" 983aa7e3a64a30fd99e86256621ff73b.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 983aa7e3a64a30fd99e86256621ff73b.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4876 983aa7e3a64a30fd99e86256621ff73b.exe Token: SeDebugPrivilege 4472 CTS.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4876 wrote to memory of 4472 4876 983aa7e3a64a30fd99e86256621ff73b.exe 84 PID 4876 wrote to memory of 4472 4876 983aa7e3a64a30fd99e86256621ff73b.exe 84 PID 4876 wrote to memory of 4472 4876 983aa7e3a64a30fd99e86256621ff73b.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\983aa7e3a64a30fd99e86256621ff73b.exe"C:\Users\Admin\AppData\Local\Temp\983aa7e3a64a30fd99e86256621ff73b.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4876 -
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:4472
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
352KB
MD539b3f21284e6a9c9473de7b0eff7941e
SHA1a6569b7dd06e9b44b0d216a1ed282472dc69bc3b
SHA2564fc2036c6056a7b7b3ce0b58abe2c353c6255380ebe8ec8a950ded144a613a8c
SHA51228255e9a87ebd6bbbcbce361cc4887995cddcfb2f1891dad5554c97706bd86154baa7a4f061d436b7e88a14545f0d7dd11f79692481be4a9fbed9a5c6a2ed075
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Filesize
942B
MD58c9eabd80e5faef315faf3ee956f9ace
SHA1b6ef9b3abfdaf613c3b20a1af803f2f9b9656816
SHA25656fb55c099a5f8b3f230f7492a906daf56fa5cad86716ac32c4e87338410a1db
SHA5128569bb2b2b7999274cab2c89d2fc10d9e76dad1f7802a203cf29fd09f1827a2dbdcbef39f8240ecfaebee6370da9a2edc23d2cc146916088743faa0c60e9e0ec
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Filesize
29KB
MD570aa23c9229741a9b52e5ce388a883ac
SHA1b42683e21e13de3f71db26635954d992ebe7119e
SHA2569d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2
SHA512be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5