60ce4f5eb010140f95983c193a30d2561b6afa884dd8190824bf90359a6bf9d7

Analysis

max time kernel
119s
max time network
125s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-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

2388 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
2388	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 2164 2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe
Token: SeDebugPrivilege 2388 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	2164	2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe
Token: SeDebugPrivilege	2388	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe

description	pid	process	target process
PID 2164 wrote to memory of 2388	2164	2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe	CTS.exe
PID 2164 wrote to memory of 2388	2164	2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe	CTS.exe
PID 2164 wrote to memory of 2388	2164	2024-05-23_bf9655a8f2093d62b2b1b70d87b5f275_bkransomware.exe	CTS.exe
PID 2164 wrote to memory of 2388	2164	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:2164

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:2388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\kvyDbf4zLBne2Fe.exe

Filesize
71KB

MD5
34e4fd7132407463b9355914c3128fb2

SHA1
17f04df1da83ac342bcdb77177681912e0cfc0fc

SHA256
612c0cc27766f1172e69ca4bee34d59f97ad5952db09925bdc39709295e3cfe5

SHA512
de484869ade5684da7c3b3bc65f58e036a3bcedf391be7133419477fdd84b2981868156cf28eb5d72eed89254fb0e3808aab688ad8c222dc7f89fde2a6957643

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit