881f5b88ff2f6ed73adc11e43fb56fd11c6bb492944d8f970b8b8d09575ba8db

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
28-04-2024 03:49

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General

Target

2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe
Size

71KB
MD5

ba3674fcc2fc0b03f9e9d26070bb599a
SHA1

0675be34fbbbd3e1227fb24da37466beaca50ad9
SHA256

881f5b88ff2f6ed73adc11e43fb56fd11c6bb492944d8f970b8b8d09575ba8db
SHA512

e447ecb100b9c05ac8486c26bd826ade208a4bf02f32c78f9e99a62eacbd68fac1f86942adcf4546ffb869eae80fb16cc9db916abce9287da2cba6d961818c90
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT9:ZhpAyazIlyazT9

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2404 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
2404	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

CTS.exe2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe

Drops file in Windows directory 2 IoCs

Processes:

2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1704 2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe
Token: SeDebugPrivilege 2404 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1704	2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe
Token: SeDebugPrivilege	2404	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe

description	pid	process	target process
PID 1704 wrote to memory of 2404	1704	2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe	CTS.exe
PID 1704 wrote to memory of 2404	1704	2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe	CTS.exe
PID 1704 wrote to memory of 2404	1704	2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe	CTS.exe
PID 1704 wrote to memory of 2404	1704	2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_ba3674fcc2fc0b03f9e9d26070bb599a_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1704

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:2404

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\xRK61HAfhvWBQJU.exe
Filesize
71KB

MD5
833676ad4f90da1ce5c11d8a86727ade

SHA1
67a82853c02434aeb1bc8c6a1f12a9fa0a9197cd

SHA256
c8e13da0bbd2c700f80839b8793706f4fea9aba3301bf6a07eced4cceefb1867

SHA512
5749095bcb25eb555e7bc14d3bb337d23015acb440dd6e225cd95234355bfc15f9556d5a21f0e1e77a90d5d63529aac1d096fcf159f165f7270107de28a08364

Download Submit
C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads