60ce4f5eb010140f95983c193a30d2561b6afa884dd8190824bf90359a6bf9d7

Analysis

max time kernel
133s
max time network
107s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 01:29

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General

Target

2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe
Size

71KB
MD5

bf9655a8f2093d62b2b1b70d87b5f275
SHA1

df5f6a3ae2bc92e437cb6e10644677ad693602e3
SHA256

60ce4f5eb010140f95983c193a30d2561b6afa884dd8190824bf90359a6bf9d7
SHA512

358e4c60eb46189fe9436e20b5b17e9b75be31c410b09d9d8a28a9967ca76a622605a842e645930a49a1afabaf51968099f3f870c0963e415a16011188d94f12
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTP:ZhpAyazIlyazTP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

3764 CTS.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

pid	process
3764	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_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:

2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4384 2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe
Token: SeDebugPrivilege 3764 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4384	2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe
Token: SeDebugPrivilege	3764	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe

description	pid	process	target process
PID 4384 wrote to memory of 3764	4384	2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe	CTS.exe
PID 4384 wrote to memory of 3764	4384	2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe	CTS.exe
PID 4384 wrote to memory of 3764	4384	2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4384

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:3764

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
394KB

MD5
2c0faeba573a2a1d34f6e263e597e446

SHA1
fcce68a6ab85041817d69d54a2bbeee6f9f0178d

SHA256
81ff7ad9ff9fb05f32e9938709fb0f9835151dd55d4aed3626d1aead7702f47a

SHA512
272019a15ad4daaf81e682165a1cfb30e8874173ecabaf7b56e09ac6cc99476258ea8630ba5f69744882a3255322f54cadc5b54337ecb58eb7013156de5e5999

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C:\Users\Admin\AppData\Local\Temp\08UQev3VJzjdmIK.exe
Filesize
71KB

MD5
95d45034a99d5300abd8cecc446c06cc

SHA1
feaf3cd90ed97b5480ad36e9d108c26a8c570dd1

SHA256
22f20875a89bf793cc5fe408b9aabf5289f112c60987059d716e2ce20a3eb802

SHA512
4761fd59d2dd026e642c55556a04b1b903282f66c0bf17e752c154bd9efbb687d0ef839157b7df4ca9986453c4e21664b57a0982f693a4df3c4eb1e112cb928f

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C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit