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Analysis
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max time kernel
145s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
27/01/2024, 13:54
Behavioral task
behavioral1
Sample
7a6cba1a259be59b2a986e31375d2a73.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
7a6cba1a259be59b2a986e31375d2a73.exe
Resource
win10v2004-20231222-en
General
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Target
7a6cba1a259be59b2a986e31375d2a73.exe
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Size
29KB
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MD5
7a6cba1a259be59b2a986e31375d2a73
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SHA1
b6dd516cb9114789fa3f5e025623717597fcb6c9
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SHA256
8c4840972d3fa611898c849098e8420af9599ddbc8ac3708419613b710388d9a
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SHA512
f75d9fa57dfad9016d28bcb0594c1e5374685a3019cc7c0dc989433b4a490ceb3acba7d39f95d2fa0519845c5ce4bb61930d1d87a31a375392c267f0e2d62edd
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SSDEEP
768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFMl:SKcR4mjD9r823FA
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 3084 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/4472-0-0x0000000000690000-0x00000000006A7000-memory.dmp upx behavioral2/files/0x0007000000023202-6.dat upx behavioral2/memory/3084-9-0x0000000000BF0000-0x0000000000C07000-memory.dmp upx behavioral2/memory/4472-7-0x0000000000690000-0x00000000006A7000-memory.dmp upx behavioral2/files/0x0006000000022765-12.dat upx behavioral2/files/0x00070000000231ff-30.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" 7a6cba1a259be59b2a986e31375d2a73.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 7a6cba1a259be59b2a986e31375d2a73.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4472 7a6cba1a259be59b2a986e31375d2a73.exe Token: SeDebugPrivilege 3084 CTS.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4472 wrote to memory of 3084 4472 7a6cba1a259be59b2a986e31375d2a73.exe 86 PID 4472 wrote to memory of 3084 4472 7a6cba1a259be59b2a986e31375d2a73.exe 86 PID 4472 wrote to memory of 3084 4472 7a6cba1a259be59b2a986e31375d2a73.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\7a6cba1a259be59b2a986e31375d2a73.exe"C:\Users\Admin\AppData\Local\Temp\7a6cba1a259be59b2a986e31375d2a73.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4472 -
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:3084
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
352KB
MD51cbe3f45979391cbb5b9762b18376d1b
SHA1176178af24ded86a221f8d6aae33ef09ca1c7915
SHA256374b25d5e0b17cd013ff190d5ddffd4b9365104988d613c9bb89bfd3310e41d6
SHA51221637f739090baf3916d04736f769bafe70458ed949ad5dd96085e66d2b1925ab0b057e1ca82841b113a89da5082542eb32cd6360752d616940c282744da4cae
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Filesize
29KB
MD59241aa7c8ebdd885efaa01c80bf8b28f
SHA1db63929d5967da66b03eb926107b88dc06c6ec55
SHA256736cd9a3d09d61b041541115cb5e6ab8beee69c51590428ba3595c4e88f3eb34
SHA5128cba743d55ad0786916aca5a4244a014cef11fc1cd734e7628fc8519971f45540778eb609f8c9673de8eac546cf28027762d5484bdb494d5b1d1f23c947fc8e4
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Filesize
29KB
MD570aa23c9229741a9b52e5ce388a883ac
SHA1b42683e21e13de3f71db26635954d992ebe7119e
SHA2569d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2
SHA512be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5