Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
27-05-2024 06:35
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe
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Size
71KB
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MD5
96d4356130a5c6bdafa20c33e6864d57
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SHA1
ad14419cb285d90a77f2f413edac0467b89f70b7
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SHA256
f6aa4fbf74676f93337a17e15274ffc9450c2a627f38fe38e224f9de9da18e43
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SHA512
ff9e86c8014055878ab183c6d74c0f2bf15a7c5be5ffebba116d8f3f634a067cadd9363d0b463e82bffb7f74eccceafb9c6d843ac77695c6820128ca610c16e4
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SSDEEP
1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTU8:ZRpAyazIliazTD
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
CTS.exepid process 2472 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:
2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exeCTS.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" 2024-05-27_96d4356130a5c6bdafa20c33e6864d57_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:
2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exeCTS.exedescription ioc process File created C:\Windows\CTS.exe 2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exeCTS.exedescription pid process Token: SeDebugPrivilege 1276 2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe Token: SeDebugPrivilege 2472 CTS.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exedescription pid process target process PID 1276 wrote to memory of 2472 1276 2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe CTS.exe PID 1276 wrote to memory of 2472 1276 2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe CTS.exe PID 1276 wrote to memory of 2472 1276 2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe CTS.exe PID 1276 wrote to memory of 2472 1276 2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe CTS.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1276 -
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:2472
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
71KB
MD59094a36ffebe784608b7144bb9fa2dc1
SHA1cfcecb7049c4e7da627ba363a711d0b7c1dfba24
SHA256d5395e44f8d9d1fa8d5b9e2b6e3602a73b214939df2ff6336108dd17e6b43aa8
SHA512e6ef0e6528de73af8bf247b8235e3ca92423945809c306155479650c071860831abf747a3ff87dcaa244de431e91ef0bd2d4fbb8a4e0dec67ed4760f06ad1079
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Filesize
71KB
MD5f9d4ab0a726adc9b5e4b7d7b724912f1
SHA13d42ca2098475924f70ee4a831c4f003b4682328
SHA256b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
SHA51222a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432