ed57be43c1b22f1274185d82b3cc70dbdb671253f84492dd014a6926b4e4b5e3

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-04-2024 23:23

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General

Target

2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe
Size

71KB
MD5

590a733a8db0088a56cdc1aa957a58f9
SHA1

04789269db8bd8ced31bbca0f2ed19f255204bf2
SHA256

ed57be43c1b22f1274185d82b3cc70dbdb671253f84492dd014a6926b4e4b5e3
SHA512

470e92a67c13e2665801e570863a16797ea5334042bff7b5e8afe3ef75b7645170a495ca784dd0a6d1ce5dff1786a545a25c80860ee3dc183c8816f973638eea
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTM:ZRpAyazIliazTM

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

1788 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
1788	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_590a733a8db0088a56cdc1aa957a58f9_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_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe

Drops file in Windows directory 2 IoCs

Processes:

2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2292 2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe
Token: SeDebugPrivilege 1788 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2292	2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe
Token: SeDebugPrivilege	1788	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe

description	pid	process	target process
PID 2292 wrote to memory of 1788	2292	2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe	CTS.exe
PID 2292 wrote to memory of 1788	2292	2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe	CTS.exe
PID 2292 wrote to memory of 1788	2292	2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe	CTS.exe
PID 2292 wrote to memory of 1788	2292	2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_590a733a8db0088a56cdc1aa957a58f9_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2292

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:1788

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\WREFrwqnglWIHFu.exe

Filesize
71KB

MD5
c771465a3eb08840f53f8f67f580f43d

SHA1
8ed30ad0aab742756e1cc54f78fa978a3c8ecbb7

SHA256
4565438d86e155e2d320a10aeb877e6a312dfd5107fe4309e10ba6d81be4c345

SHA512
b6eeab630f16b63a38cd619cd5c12037d1d3b790f1535b3cdd762f22d7bf7698f6938a54afdfa11b55b6ac0ba5f09b2d03010041589b015a463fe256f1bf026a

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit