753f211ec0e8661b13901f5aca280825c4928619475513ce10eec77fe6187dd3

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
24-04-2024 18:02

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General

Target

2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe
Size

71KB
MD5

f3599f4de181462094e9593d221be7c1
SHA1

85010906c4d95ce3accdb628d697e70635c20b45
SHA256

753f211ec0e8661b13901f5aca280825c4928619475513ce10eec77fe6187dd3
SHA512

cea5eaa579487de0c570515540e6bbd9d672968cad95cff61e5ffae4e84df9e3449096a01f55d2c3b059b9b2454a7c3fee0c2b336a8cde2c63c5554e1c845d77
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTt:ZRpAyazIliazTt

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2256	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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-24_f3599f4de181462094e9593d221be7c1_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	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2824	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe
Token: SeDebugPrivilege	2256	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2824 wrote to memory of 2256	2824	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe	28
PID 2824 wrote to memory of 2256	2824	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe	28
PID 2824 wrote to memory of 2256	2824	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe	28
PID 2824 wrote to memory of 2256	2824	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2824
- 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:2256

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\rjuRuCiKCRJQh3x.exe

Filesize
71KB

MD5
0ab76b5141144c07350714739d738b88

SHA1
5b3d311aea53795d4a90195b8a96b6f8fa028473

SHA256
3a2303e2876e208457562445bca9f84f6e9d50047d552a1166dac906d2051005

SHA512
fb97f01362688e65c0d22bd9f0dc072d131a9478d823bae20c7e8ce8f8cc8b734cc19c942002767333ba1f7bc817e9ec40e12f190e21ae5d74460d3b42024ac3

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads