Analysis
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max time kernel
92s -
max time network
94s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
03-06-2024 09:46
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe
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Size
71KB
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MD5
eed7c72ac005ec2aff1842c04688a730
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SHA1
0dece82001a391a317028fe3c737c5e34dd2dccb
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SHA256
491adfdc3cce051731ea87c3ca9e16ffcdd8d8cc9e10d9649f8b49d5575def92
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SHA512
993d53d4a8708cc79a42c27b33516add0bccdeee23662540c984671955248f5d3b053e52249f4a045fa2c3d9a8015726e568976e8b041167bdc9fed10e1fee8e
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SSDEEP
1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTn:ZRpAyazIliazTn
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
CTS.exepid process 2732 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
Processes:
2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exeCTS.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" 2024-06-03_eed7c72ac005ec2aff1842c04688a730_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
Processes:
2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exeCTS.exedescription ioc process File created C:\Windows\CTS.exe 2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exeCTS.exedescription pid process Token: SeDebugPrivilege 1336 2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe Token: SeDebugPrivilege 2732 CTS.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exedescription pid process target process PID 1336 wrote to memory of 2732 1336 2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe CTS.exe PID 1336 wrote to memory of 2732 1336 2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe CTS.exe PID 1336 wrote to memory of 2732 1336 2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe CTS.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1336 -
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:2732
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
392KB
MD58d4a552c02bd977f7f99f7f34adb866f
SHA1707944e73a0dbc7cc768edcb625f1d62eabc129f
SHA256458e7cba3b5da1407271567433ced020d2ccf4b57bf7db4fada141b68bd43a04
SHA512bc38b58e5aca68b955452f3a4a44dae42b2760b5501b9011afc989fb67713efcbb959377444a49563caa104f632e53abc1d63701a34876f56d189f358afdbce0
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Filesize
71KB
MD5027e94f3e2dd93dfe8b0d69118fed7d5
SHA16a0187e291539a6c11b64a1d5ca56f097d8e4343
SHA256dc68c1c45c77b7130185702ddd2996d3d407178912644b04c08f8eda80fe7a25
SHA5122e535b394625f64a376e53aafebea467d58d259ca274bdf870948b2d2f042754c189de3e6a56e48d799dcf57ae26b94b7e45d379a256dec50defa87f4d9b3519
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Filesize
71KB
MD5f9d4ab0a726adc9b5e4b7d7b724912f1
SHA13d42ca2098475924f70ee4a831c4f003b4682328
SHA256b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
SHA51222a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432