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Analysis
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max time kernel
147s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
04/07/2024, 18:51
Static task
static1
Behavioral task
behavioral1
Sample
2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe
Resource
win10v2004-20240508-en
General
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Target
2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe
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Size
76KB
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MD5
47604d39b4af645d5933728d075861c8
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SHA1
17c09b3500572e7c6b7ef37c77b1745608d9ecee
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SHA256
a4fb338f9b0835ee7f43ddf1aa6a5687119a4cb3a70a41828998de7d5c23c659
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SHA512
7da6d391c50b8fad42a58a5289b9775a0be004b8be8711e8dbc46d493fda318d672acabe77fe1f7bbfbbf693d3e7a785e1ffdf4ebb3f0976bdda1bcb0cdde44c
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SSDEEP
1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTCxFz:ZRpAyazIliazTCTz
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 1092 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
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" 2024-07-04_47604d39b4af645d5933728d075861c8_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 2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe File created C:\Windows\CTS.exe CTS.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2340 2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe Token: SeDebugPrivilege 1092 CTS.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2340 wrote to memory of 1092 2340 2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe 80 PID 2340 wrote to memory of 1092 2340 2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe 80 PID 2340 wrote to memory of 1092 2340 2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe"C:\Users\Admin\AppData\Local\Temp\2024-07-04_47604d39b4af645d5933728d075861c8_bkransomware.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2340 -
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:1092
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
394KB
MD5b4481d97433493c2dcc4b8be6de41f64
SHA1ea6fae4fc8c1176611c51db180e120774ebbf428
SHA2562fed8861001760672ff432640501898c3433e1fb217a696b60549f61b0b83532
SHA51227570f903ee2c14bbcc83d72192272c79ee6ba18198b282835fa17609774f70887362f2583bf3e110d71be428a921aee918b2db734a0738e4ec16295c114d746
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Filesize
76KB
MD50e61d30aabdede8722b45d8e73ba87a8
SHA1d62c3a234dabb635dcf797e91da7ba9e2d3a30e6
SHA256b4ac4c0f6e9548fa6d3d936aeb2550a28c376950e382d1004dbc771f6eeb81f9
SHA512000709b0a74854f8d4594065e02346c7d329d2272e0695988b058f65e33705f0abeb0ef488a812c06de907dc56a3561d59be7c329df00cddcd37e6306a577f38
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Filesize
71KB
MD5f9d4ab0a726adc9b5e4b7d7b724912f1
SHA13d42ca2098475924f70ee4a831c4f003b4682328
SHA256b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc
SHA51222a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432