Analysis
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max time kernel
93s -
max time network
95s -
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 09:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe
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Size
96KB
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MD5
1e138ba27e069eebe7d994fb51386e90
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SHA1
75bb629f11e6664caf3213a36126f9656a2f5c74
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SHA256
7ad69e79d3fa46aab84ecec563eca22611b4ac81e52967cfc1b87d4e3044a21e
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SHA512
c5f6897276a22bb5f80b778b2a5c40fd11013a6b1fea02ac9a9d0fb033d5f523372186cf6b7aca08de2aee955e0ee2a8188d0eeeeaf91387ada2eab1b1f254d5
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SSDEEP
1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTrS/LKx0d/WItQAEKbO+:ZRpAyazIliazT+/WWFWF5KS+
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
Processes:
M2cTnsyzwjodubt.exeCTS.exepid process 2308 M2cTnsyzwjodubt.exe 556 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_1e138ba27e069eebe7d994fb51386e90_bkransomware.exeCTS.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" 2024-06-03_1e138ba27e069eebe7d994fb51386e90_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_1e138ba27e069eebe7d994fb51386e90_bkransomware.exeCTS.exedescription ioc process File created C:\Windows\CTS.exe 2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exeCTS.exedescription pid process Token: SeDebugPrivilege 3652 2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe Token: SeDebugPrivilege 556 CTS.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exedescription pid process target process PID 3652 wrote to memory of 2308 3652 2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe M2cTnsyzwjodubt.exe PID 3652 wrote to memory of 2308 3652 2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe M2cTnsyzwjodubt.exe PID 3652 wrote to memory of 556 3652 2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe CTS.exe PID 3652 wrote to memory of 556 3652 2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe CTS.exe PID 3652 wrote to memory of 556 3652 2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe CTS.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_1e138ba27e069eebe7d994fb51386e90_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3652 -
C:\Users\Admin\AppData\Local\Temp\M2cTnsyzwjodubt.exeC:\Users\Admin\AppData\Local\Temp\M2cTnsyzwjodubt.exe2⤵
- Executes dropped EXE
PID:2308
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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:556
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
394KB
MD565d58309fdf1dd5c23d590cf5e012f12
SHA1cfed61bf9caf94eeeffb40d6b78dbdd908237f35
SHA2566185f08680801e8925364088c48d6a7d2462dfa1f030aefd45e5d2c590bfc580
SHA512ab3c2b37650a33110d38bef001afcc5439725930f4a29699372cc96a10857aadefd7878b9585ffea6787281b4ba69661ab7d246c6910412f040141a89db5d05b
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Filesize
25KB
MD5abbd49c180a2f8703f6306d6fa731fdc
SHA1d63f4bfe7f74936b2fbace803e3da6103fbf6586
SHA2565f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1
SHA512290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9
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Filesize
71KB
MD5f9d4ab0a726adc9b5e4b7d7b724912f1
SHA13d42ca2098475924f70ee4a831c4f003b4682328
SHA256b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
SHA51222a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432