d9dfdc2f41479782868e7329e988f5731ad7449c96ec2fbbaa5e6a058d424d73

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/05/2024, 09:04

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General

Target

2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe
Size

233KB
MD5

0602adffa199c4db6b7033938771df93
SHA1

2f755f123490cf6c71f551ee63fb8dea660607f6
SHA256

d9dfdc2f41479782868e7329e988f5731ad7449c96ec2fbbaa5e6a058d424d73
SHA512

783b77b541c5b09c85354daf2bd4c1a7f4d89026431b8db52c5684cde7c7ff4439d2b522927106c984a7bc3b09a27671cef5ef44346a88c2c54751dce08e1844
SSDEEP

6144:xZ8az3eGPlZlJIuGlJTCv4m/37aZFx1JQzrcno63OciypJ:xC0uGPXv8Cv4m/LaZFNYxIOcNJ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1400	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"	2024-05-24_0602adffa199c4db6b7033938771df93_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	912	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe
Token: SeDebugPrivilege	1400	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 912 wrote to memory of 1400	912	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe	28
PID 912 wrote to memory of 1400	912	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe	28
PID 912 wrote to memory of 1400	912	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe	28
PID 912 wrote to memory of 1400	912	2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_0602adffa199c4db6b7033938771df93_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:912
- 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:1400

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\FVyAidIoa2e4xOn.exe

Filesize
233KB

MD5
e290c2d8cf0128e877034c570f512f23

SHA1
f3fc6121d6045550009b782b3c49b27eecc1257c

SHA256
7617e12c2627d3340f71512107c38139002466b46a7fc075b4bfc05dfa96bd1d

SHA512
ac097e903fe446bc703209f8e5edc09677275c27db8fa542ebad7ed500e06fa41262523c3d19279f0ddb2829bda0f69c69cc7cbe8883c8a104f208097505ac86

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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