Analysis
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max time kernel
118s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-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 300 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 2980 2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe Token: SeDebugPrivilege 300 CTS.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exedescription pid process target process PID 2980 wrote to memory of 300 2980 2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe CTS.exe PID 2980 wrote to memory of 300 2980 2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe CTS.exe PID 2980 wrote to memory of 300 2980 2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe CTS.exe PID 2980 wrote to memory of 300 2980 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:2980 -
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:300
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
71KB
MD521e544ff9c1e4bb3185a25f0a71c1a01
SHA11d44474e33167c196c66a19dae2bbfb1ae37c402
SHA256f17987676d34e3a70a2101bf0d48737472fc73b2a9ee16a0d181cff1d095824a
SHA512bdfa3b0354b862a0db9931f68bed1984da5c2a21462fcbc213a642513130b9410a870cc51d34cf810f22f4b0f997f9e5a41f2852c226025ea27b09cb3eee506c
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Filesize
71KB
MD5f9d4ab0a726adc9b5e4b7d7b724912f1
SHA13d42ca2098475924f70ee4a831c4f003b4682328
SHA256b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
SHA51222a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432