Analysis
-
max time kernel
94s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
30/05/2024, 23:21
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe
Resource
win10v2004-20240426-en
General
-
Target
2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe
-
Size
96KB
-
MD5
12f7df5c56ce986d404ead898b7d018b
-
SHA1
51dff6b4b3bf52ea0c893bc2006114f9a93ba323
-
SHA256
e75499cde0fb6d99a85ec69640e10101d83c5f71c71568dcb5cc83742ccaef34
-
SHA512
79b45be806ff912044f45cc0348fe95cbdf4774436381a60c865482f506952c1a042eb685fb15046d80fae767f3e31dbff5e40e131a985b0f9a45c3873131d30
-
SSDEEP
1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTstkGguY2o6uOJb:ZRpAyazIliazTJ2o6uUb
Malware Config
Signatures
-
Executes dropped EXE 2 IoCs
pid Process 1512 UrvPRdtUvmJuMln.exe 4860 CTS.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
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" 2024-05-30_12f7df5c56ce986d404ead898b7d018b_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 2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2472 2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe Token: SeDebugPrivilege 4860 CTS.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 2472 wrote to memory of 1512 2472 2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe 83 PID 2472 wrote to memory of 1512 2472 2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe 83 PID 2472 wrote to memory of 4860 2472 2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe 85 PID 2472 wrote to memory of 4860 2472 2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe 85 PID 2472 wrote to memory of 4860 2472 2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-30_12f7df5c56ce986d404ead898b7d018b_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2472 -
C:\Users\Admin\AppData\Local\Temp\UrvPRdtUvmJuMln.exeC:\Users\Admin\AppData\Local\Temp\UrvPRdtUvmJuMln.exe2⤵
- Executes dropped EXE
PID:1512
-
-
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:4860
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
392KB
MD546c2375504b8692da9c7967dbe0095a8
SHA1613aac0889ec5564ea176ec55fb18c62ac1bcd32
SHA2565022c8a9fd7925bd5487920504a22f6f240339fe7640131d8d071b65e7f1a851
SHA51231ea007cc95ce336e3b05a236e69429887881ec22bb9d8f196eeca15197b25a930d57f4d160d64391d55046d72bff0e04ec19f0497d00db0bb524fd350eff9a5
-
Filesize
25KB
MD5abbd49c180a2f8703f6306d6fa731fdc
SHA1d63f4bfe7f74936b2fbace803e3da6103fbf6586
SHA2565f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1
SHA512290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9
-
Filesize
71KB
MD5f9d4ab0a726adc9b5e4b7d7b724912f1
SHA13d42ca2098475924f70ee4a831c4f003b4682328
SHA256b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
SHA51222a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432