Analysis
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max time kernel
93s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
08/06/2024, 20:38
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe
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Size
96KB
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MD5
7ea7d9e934a8ddeb8dfd377f3d0c9131
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SHA1
7af17075441013a1a77773f2fc9b09bc26481793
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SHA256
03db67dd35edc3e7b1f8576b329dc16c573b2bab31e232cdea24d501e02f67f8
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SHA512
d9b91af85713a43d3adc3ce0f0c7d146062e0fba481d410fd7e785d0897033b65de5e7888aa25b95ed254911a60a310c1ce2b4c74fe8b4cf2cb98024afc826cc
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SSDEEP
1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT53yz18fxYNxw:ZhpAyazIlyazT53Csaw
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 64 DqQBwMbdaE8d2HW.exe 1600 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" 2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_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 2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 5116 2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe Token: SeDebugPrivilege 1600 CTS.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 5116 wrote to memory of 64 5116 2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe 84 PID 5116 wrote to memory of 64 5116 2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe 84 PID 5116 wrote to memory of 1600 5116 2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe 86 PID 5116 wrote to memory of 1600 5116 2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe 86 PID 5116 wrote to memory of 1600 5116 2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5116 -
C:\Users\Admin\AppData\Local\Temp\DqQBwMbdaE8d2HW.exeC:\Users\Admin\AppData\Local\Temp\DqQBwMbdaE8d2HW.exe2⤵
- Executes dropped EXE
PID:64
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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:1600
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
392KB
MD5a13b15cf718cdea621f2a2e31256f706
SHA16062afba07d0f07d7d09ce149a181d178d8d4f2e
SHA2566ecfcbc0b996503404cd0099fd29d44f7cab858b84e58fd5d2648febf1b9a889
SHA512360b8582d76637826dc1665cae2982ff31ccbcd50e3fa447a8e8b074f5523b09f231a3365305acc2b5a925bf128c6788fb724c13321d6b556c79c4d5110720c4
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Filesize
25KB
MD5abbd49c180a2f8703f6306d6fa731fdc
SHA1d63f4bfe7f74936b2fbace803e3da6103fbf6586
SHA2565f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1
SHA512290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9
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Filesize
71KB
MD566df4ffab62e674af2e75b163563fc0b
SHA1dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA256075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
SHA5121588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25