Analysis
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max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system -
submitted
22/07/2024, 15:53
Static task
static1
Behavioral task
behavioral1
Sample
2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
Resource
win10v2004-20240709-en
General
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Target
2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe
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Size
172KB
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MD5
cbc833251bc03a569b83b78e268acd97
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SHA1
3e140a2f507bd8609fdd576075e29de792114ee4
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SHA256
7f781b930315bdfcbd1832feec7e2896fb1986498157d253895e5bd285d87373
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SHA512
319e733aa718bcf46cb59e85a46d318a596b3763dcaf7c32581acfe8c513a2451fb579edb9c55474a9bad3d09c8c8a22f2e919dcc1135c288cd7299dace71b56
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SSDEEP
3072:ZhpAyazIlyazTCKncoIhVA9xce4CLJaPQal7tn3P+Za4:hZMazbnhw+9xj1aYmWd
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 3384 v3JaF7WMAnM4zRe.exe 4028 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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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" 2024-07-22_cbc833251bc03a569b83b78e268acd97_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 2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4812 2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe Token: SeDebugPrivilege 4028 CTS.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 4812 wrote to memory of 3384 4812 2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe 85 PID 4812 wrote to memory of 3384 4812 2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe 85 PID 4812 wrote to memory of 4028 4812 2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe 86 PID 4812 wrote to memory of 4028 4812 2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe 86 PID 4812 wrote to memory of 4028 4812 2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-22_cbc833251bc03a569b83b78e268acd97_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4812 -
C:\Users\Admin\AppData\Local\Temp\v3JaF7WMAnM4zRe.exeC:\Users\Admin\AppData\Local\Temp\v3JaF7WMAnM4zRe.exe2⤵
- Executes dropped EXE
PID:3384
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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:4028
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
392KB
MD5bf0c94c03f05dd4a5ecd6b1036d1d485
SHA1360ecc46bdcf1a77ff700c136ba08202b641b3a9
SHA25680c41e5cd4e3ebfd5a57d83df46ef7888a247a96d9614012259bb85676c9ddf5
SHA5123ea483b4a524b2c90ccacf26937ac7e887e3b193e51d7074d1485a3d06349b97eb98428deb150c4acda49122b96412ba016d1299487c720e1ae0617173ee0383
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Filesize
172KB
MD5ec3c19c19e10be852469cff5ef0a3e56
SHA1f8a39b0796b95718bd6490dca0d22cdb92912ad3
SHA256bde4f02689d15b1a714a1b93cebe3af25d8039b6535bb5d5adbcec94e1e1f193
SHA51286b8e218f2106dcfaeb58082a70092613f43d2ffb1d8b9cb61436d9de60b1230e3448155469858b1c12ee55a5ec034e9d9502e34665c28898c00d4756bdc057f
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Filesize
100KB
MD5db697c943fcb215f757f9c22c907c568
SHA1c57d891472f5ede8b1ee5d9bd6f5ad8fc8e9e5d7
SHA25607c96337729e3c4c986e8f5660a97cb475c4c04842606be2654b37892af57de9
SHA512bfa5c34d8c78015ccf96a2ef1c6d8f82157eb88680139bdbb51c55e3cd2a7c41bf364a364fd62b180b202cdf4f3d7d31c3710b8709c1d25a639bb00dfc97b646
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Filesize
71KB
MD566df4ffab62e674af2e75b163563fc0b
SHA1dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA5121588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25