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Analysis
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max time kernel
141s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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 2420 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 behavioral1/memory/2996-0-0x0000000001090000-0x00000000010A7000-memory.dmp upx behavioral1/files/0x0009000000012270-10.dat upx behavioral1/memory/2420-12-0x0000000000DA0000-0x0000000000DB7000-memory.dmp upx behavioral1/memory/2996-5-0x0000000000DA0000-0x0000000000DB7000-memory.dmp upx behavioral1/memory/2996-9-0x0000000001090000-0x00000000010A7000-memory.dmp upx behavioral1/files/0x000a000000012262-14.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" 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 2996 983aa7e3a64a30fd99e86256621ff73b.exe Token: SeDebugPrivilege 2420 CTS.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2996 wrote to memory of 2420 2996 983aa7e3a64a30fd99e86256621ff73b.exe 28 PID 2996 wrote to memory of 2420 2996 983aa7e3a64a30fd99e86256621ff73b.exe 28 PID 2996 wrote to memory of 2420 2996 983aa7e3a64a30fd99e86256621ff73b.exe 28 PID 2996 wrote to memory of 2420 2996 983aa7e3a64a30fd99e86256621ff73b.exe 28
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:2996 -
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:2420
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
30KB
MD52445eefddf1bb423be90ba31675ebeab
SHA13d38d315f4fc0efbc6ea409acacfa50b3fa8362e
SHA25659ea930c541c3834842b563ea59b37230de21a118025294b0e30d3afc650a9f5
SHA51236067a43535c015f0e010e320958f7b232eac06df66149aa6b1aedf140954b13417a54c5d7688b1ff3278f8eff34c2b55717bace8b886ceb0f35690c9ae88ba1
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Filesize
29KB
MD570aa23c9229741a9b52e5ce388a883ac
SHA1b42683e21e13de3f71db26635954d992ebe7119e
SHA2569d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2
SHA512be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5