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Analysis
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max time kernel
118s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
01/07/2024, 04:21
Static task
static1
Behavioral task
behavioral1
Sample
2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe
Resource
win10v2004-20240508-en
General
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Target
2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe
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Size
96KB
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MD5
1359d2fdab871eafae407b3b7f9c5514
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SHA1
7bd60c4c3f302e150f96a05cc9f57e0d1e2015be
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SHA256
2e3121665cdbfce38397dd3bac37f9f39bc1855bd7001dd8079ef464c1ce49fc
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SHA512
2d368ebb29d54c4e05e184eb8f2e447762cf49210c2b8cb5ce48bdda20cae8f00f54b376eb95c644760abc2991de41bdcce098acea2186e0abe73dac3dd6df54
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SSDEEP
1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTWE7dVzhjq9gJO:ZhpAyazIlyazTzdVzhjq9gQ
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 2228 DB4X97iYPvvlvG5.exe 2220 CTS.exe -
Loads dropped DLL 3 IoCs
pid Process 616 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe 616 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe 2224 Process not Found -
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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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" 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.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 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 616 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe Token: SeDebugPrivilege 2220 CTS.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 616 wrote to memory of 2228 616 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe 28 PID 616 wrote to memory of 2228 616 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe 28 PID 616 wrote to memory of 2228 616 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe 28 PID 616 wrote to memory of 2228 616 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe 28 PID 616 wrote to memory of 2220 616 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe 30 PID 616 wrote to memory of 2220 616 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe 30 PID 616 wrote to memory of 2220 616 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe 30 PID 616 wrote to memory of 2220 616 2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-01_1359d2fdab871eafae407b3b7f9c5514_bkransomware.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:616 -
C:\Users\Admin\AppData\Local\Temp\DB4X97iYPvvlvG5.exeC:\Users\Admin\AppData\Local\Temp\DB4X97iYPvvlvG5.exe2⤵
- Executes dropped EXE
PID:2228
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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:2220
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
96KB
MD516d4be400206b0f207dadef6f0a94fb9
SHA1fd95c0f8eccc66255646ccdb24484675998820d8
SHA2562dc4b95f70867a3b4eff27aa634d5c2230c0db576581306111140033342a05e3
SHA512f1ee4923e161254788329435e81aa0ad595561f95bceaba720868a7a0cd76937bfed575778f309e3bc007a8b69a44719cdf935f91c14b46697c0017eec8e565f
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Filesize
71KB
MD566df4ffab62e674af2e75b163563fc0b
SHA1dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA5121588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25
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Filesize
25KB
MD5abbd49c180a2f8703f6306d6fa731fdc
SHA1d63f4bfe7f74936b2fbace803e3da6103fbf6586
SHA2565f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1
SHA512290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9