740e00925f9d3f8c2141279a81888c965bd147071708f646163d40e5e16a31a9

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 19:06

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General

Target

2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe
Size

71KB
MD5

6d418da3a9e4ebbf92f9e3a874840860
SHA1

b96fa5fe9bf71eda7414fe826fd9c405fd854a07
SHA256

740e00925f9d3f8c2141279a81888c965bd147071708f646163d40e5e16a31a9
SHA512

b38c0b0b99d948b80eeb61ebe798dfa5a2f3f4d726f70b56662a831c61e3199cd9543e25dd79c074d16cf7cdabe3314baefa4ca9e411dbb25dd648f9cc275820
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTe5MP:ZRpAyazIliazT2MP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2952	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2724	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe
Token: SeDebugPrivilege	2952	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 2952	2724	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe	28
PID 2724 wrote to memory of 2952	2724	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe	28
PID 2724 wrote to memory of 2952	2724	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe	28
PID 2724 wrote to memory of 2952	2724	2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_6d418da3a9e4ebbf92f9e3a874840860_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2724
- 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:2952

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\zhyzDckxZUGK6Wr.exe

Filesize
71KB

MD5
681cea0012008bf1732002d89e31dd5d

SHA1
80d805a5ebd255242140853a660e12e08697f444

SHA256
0c8db2769d732d9c9a973a4cb5a258c638ee8c31ebbcc2ee2069f616b72c890f

SHA512
e564fbb9a72faec1faf818588aca0d3866a5170586ad49eea2cba6c17c063394648b6b3a17dc68ab8b641f9af50d37739b31070b51e512da8c7e35b2fdea8ec0

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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