Analysis
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max time kernel
121s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
24-05-2024 15:25
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe
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Size
71KB
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MD5
6a1570f570f15dc08a8d370b3490cb7c
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SHA1
74c56df09fdad3814bad0fb5026cf47fecb65ee3
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SHA256
2c21807c3cd0acaaa7905fce4a45f3db2360ee4662adc873fb4c49cd5ae6aa43
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SHA512
f6fbf7d05230600a1e6972f16c6eda5760134927248c6911d46fb78f664970ce8be7b7e10d2830ffd598ba6701c18e4cdaf9f71b7b085d608816db9ae5365143
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SSDEEP
1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT5:ZRpAyazIliazT5
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
CTS.exepid process 2036 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:
2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exeCTS.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" 2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_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:
CTS.exe2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exedescription ioc process File created C:\Windows\CTS.exe CTS.exe File created C:\Windows\CTS.exe 2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exeCTS.exedescription pid process Token: SeDebugPrivilege 2760 2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe Token: SeDebugPrivilege 2036 CTS.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exedescription pid process target process PID 2760 wrote to memory of 2036 2760 2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe CTS.exe PID 2760 wrote to memory of 2036 2760 2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe CTS.exe PID 2760 wrote to memory of 2036 2760 2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe CTS.exe PID 2760 wrote to memory of 2036 2760 2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe CTS.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-24_6a1570f570f15dc08a8d370b3490cb7c_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2760 -
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:2036
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\qSpbz483AV3ygwL.exeFilesize
71KB
MD50f4faa3210192412c260f8bc8a522a41
SHA1bf6ba262345cf48871a98fedd21718d1b06f1824
SHA256d0795646d14320b529223a27ee9169efc6219fca5dd0bb869495f7ba1fd98def
SHA51227d7df98ed308deabc84a983cffaf727afb23620be3688870852068101a7157ab81c38d4959eda32382b7d60eac06513abb20daa3a581f02a253867757899165
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C:\Windows\CTS.exeFilesize
71KB
MD5f9d4ab0a726adc9b5e4b7d7b724912f1
SHA13d42ca2098475924f70ee4a831c4f003b4682328
SHA256b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
SHA51222a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432