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Analysis
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max time kernel
145s -
max time network
126s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
01/02/2024, 07:20
Behavioral task
behavioral1
Sample
86476884d5cf831c852593bb8f9cc597.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
86476884d5cf831c852593bb8f9cc597.exe
Resource
win10v2004-20231215-en
General
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Target
86476884d5cf831c852593bb8f9cc597.exe
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Size
41KB
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MD5
86476884d5cf831c852593bb8f9cc597
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SHA1
a70de34904c55e7c2f08d5e154406b1bf0d25d5d
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SHA256
e717ddb6adfb9a8f1cd374a38f10cacd29c169727329a2be11ca086da88b75c0
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SHA512
9cb18391c316a6bc350219906cea540b8e543951ec9423157279fded2977bdc527d9dfa3da903e88d034c96408dde2813c9691c5f27e40efc8baa20a0d07ce3a
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SSDEEP
768:X8Q2ZDX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIom46+I7cVKh:s9Z3KcR4mjD9r8226+Eh
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 1640 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/1436-0-0x00000000013D0000-0x00000000013E7000-memory.dmp upx behavioral1/memory/1436-9-0x00000000013D0000-0x00000000013E7000-memory.dmp upx behavioral1/memory/1640-12-0x0000000000240000-0x0000000000257000-memory.dmp upx behavioral1/files/0x0035000000015c38-11.dat upx behavioral1/files/0x0009000000012270-13.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" 86476884d5cf831c852593bb8f9cc597.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 86476884d5cf831c852593bb8f9cc597.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1436 86476884d5cf831c852593bb8f9cc597.exe Token: SeDebugPrivilege 1640 CTS.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1436 wrote to memory of 1640 1436 86476884d5cf831c852593bb8f9cc597.exe 28 PID 1436 wrote to memory of 1640 1436 86476884d5cf831c852593bb8f9cc597.exe 28 PID 1436 wrote to memory of 1640 1436 86476884d5cf831c852593bb8f9cc597.exe 28 PID 1436 wrote to memory of 1640 1436 86476884d5cf831c852593bb8f9cc597.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\86476884d5cf831c852593bb8f9cc597.exe"C:\Users\Admin\AppData\Local\Temp\86476884d5cf831c852593bb8f9cc597.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1436 -
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:1640
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD557d7846e54cc507b9549642c1976b878
SHA1938bb4ab8422c94c407a2c1db22061d5cb48444d
SHA25611ea21515f805664eadfc9dda6ac1d201be871e2f8ee3ec3ff06b2fcf980a108
SHA512c148435235408600027433db7848d3e61b326b958732bdeab38b69fdd9ee71ab78782e38e1e192a1850ed632d79aa3b7f3b994364c3f24134520dc54146d3606
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Filesize
35KB
MD593e5f18caebd8d4a2c893e40e5f38232
SHA1fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6
SHA256a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8
SHA512986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54