d21df160b38e060e6552b89534a2e88f8b919a526a095a4307f0823db3e49b08

Analysis

max time kernel
122s
max time network
127s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27-05-2024 06:31

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General

Target

2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe
Size

71KB
MD5

6f9920cf81c169dd0e4dad7ffedd4785
SHA1

33f22f894b423c7956701307f6a7fb1721ad7756
SHA256

d21df160b38e060e6552b89534a2e88f8b919a526a095a4307f0823db3e49b08
SHA512

99dff00a65ed5c37d6b86e949618c2bf4aa00b076f44befa21d04301c3c1fa3653278001b28571d5d0677b92804fbb78ca4930571ba82da24757b3639c7d036c
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTG:ZRpAyazIliazTG

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2068 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
2068	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_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

Processes:

2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2612 2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe
Token: SeDebugPrivilege 2068 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2612	2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe
Token: SeDebugPrivilege	2068	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe

description	pid	process	target process
PID 2612 wrote to memory of 2068	2612	2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe	CTS.exe
PID 2612 wrote to memory of 2068	2612	2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe	CTS.exe
PID 2612 wrote to memory of 2068	2612	2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe	CTS.exe
PID 2612 wrote to memory of 2068	2612	2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_6f9920cf81c169dd0e4dad7ffedd4785_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2612

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:2068

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\ucwKZn602Wt9qCN.exe

Filesize
71KB

MD5
4a5f457ba16780de89577d2dbb5ce302

SHA1
68157635bf260ce447c39d598b379d34abc677d7

SHA256
98bc8f0e6af9d12b95e0b19305b4b43813f7fb6310d831586959c6a2fccdceb7

SHA512
621ca17e562d49a2c5a2d7a95c737327064ab522c960890cae0fff906a4337f8ea5d8bdfeee4ec02e5ba1a79e8c523e53ccc6901a40ca0dbcaa1f6bcb7b9719b

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit