f5e0988f24f6dbde9ee83b9ed30bf5c6122a52a4675ca526bcd97787e8d8d579

Analysis

max time kernel
133s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 20:02

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-16_b56ecadf25fddf9e3a8973cd5ec0e28a_bkransomware.exe
Size

71KB
MD5

b56ecadf25fddf9e3a8973cd5ec0e28a
SHA1

6ea273b87899de0ccd57241779281a03bd70cabf
SHA256

f5e0988f24f6dbde9ee83b9ed30bf5c6122a52a4675ca526bcd97787e8d8d579
SHA512

8626a201006bfb507ea07d1dccdfaacd23439c91b04bd715c8ac29dee2f2766d68aca28865f6e7960da7da726df0ac5fdba33543e9b9c19ed4c3a3bbf760cded
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTM:ZRpAyazIliazTM

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4384	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"	2024-05-16_b56ecadf25fddf9e3a8973cd5ec0e28a_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	2024-05-16_b56ecadf25fddf9e3a8973cd5ec0e28a_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1224	2024-05-16_b56ecadf25fddf9e3a8973cd5ec0e28a_bkransomware.exe
Token: SeDebugPrivilege	4384	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 4384	1224	2024-05-16_b56ecadf25fddf9e3a8973cd5ec0e28a_bkransomware.exe	84
PID 1224 wrote to memory of 4384	1224	2024-05-16_b56ecadf25fddf9e3a8973cd5ec0e28a_bkransomware.exe	84
PID 1224 wrote to memory of 4384	1224	2024-05-16_b56ecadf25fddf9e3a8973cd5ec0e28a_bkransomware.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-16_b56ecadf25fddf9e3a8973cd5ec0e28a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_b56ecadf25fddf9e3a8973cd5ec0e28a_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1224
- 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:4384

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
498cb94a79574fc9f723eef6b308c343

SHA1
e736aa0bbaa6b2ca0e19ef91763b04777aaaecd3

SHA256
b5d65fdb110736c953fcdfe11df244b3ed1e47094d2b427a3c8873392c01dbe5

SHA512
7dc6707d8b2e5beb6c337350a21075d152292892085d4ea98b1d72a10e510e78dede4c821d1b6238cdbdaa1a2863227dddf5f5d9a7620ca238c2a6d0f2d5235a

Download Submit
C:\Users\Admin\AppData\Local\Temp\PRUavhZlwe9EjIn.exe

Filesize
71KB

MD5
90fca2eb754f7f2273e6fbe6ba636d83

SHA1
8f463f1b6683c5f5e3b44113633f8b74cbeec593

SHA256
c6ad4232621e8f6dffeadb8619f59ee8b5bbfbee9ce7892471475503d266bef7

SHA512
c4a6a91b7ed022a372d0fd8e2810514afdad840468a2819336d8e1b0e4adc3221a749ad694506236729917bd98fe95ea5409ea72073f7377c9ddd6433c447b6e

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads