f6aa4fbf74676f93337a17e15274ffc9450c2a627f38fe38e224f9de9da18e43

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27-05-2024 06:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe
Size

71KB
MD5

96d4356130a5c6bdafa20c33e6864d57
SHA1

ad14419cb285d90a77f2f413edac0467b89f70b7
SHA256

f6aa4fbf74676f93337a17e15274ffc9450c2a627f38fe38e224f9de9da18e43
SHA512

ff9e86c8014055878ab183c6d74c0f2bf15a7c5be5ffebba116d8f3f634a067cadd9363d0b463e82bffb7f74eccceafb9c6d843ac77695c6820128ca610c16e4
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTU8:ZRpAyazIliazTD

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

4004 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
4004	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_96d4356130a5c6bdafa20c33e6864d57_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_96d4356130a5c6bdafa20c33e6864d57_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_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 3748 2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe
Token: SeDebugPrivilege 4004 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	3748	2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe
Token: SeDebugPrivilege	4004	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe

description	pid	process	target process
PID 3748 wrote to memory of 4004	3748	2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe	CTS.exe
PID 3748 wrote to memory of 4004	3748	2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe	CTS.exe
PID 3748 wrote to memory of 4004	3748	2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3748

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:4004

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
392KB

MD5
38e0dd7569083ffa586fd697691fa9e1

SHA1
f3e40b3bd5ce90a460859c5201028e477e865df5

SHA256
633a4b7fc3c22e17c97666ee6a7169bc0c5c1ade80ac9592152405d9bafc7bbf

SHA512
67a0a1aa85f0e16d77d31ea242ce12c6c8291738cd30711f6ba20080a09c0cf134a27dc41164e1fcdde190bc081f1057f1a06632422c1877c026ebf4e5165271

Download Submit
C:\Users\Admin\AppData\Local\Temp\HqOBCStKVL52vRM.exe

Filesize
71KB

MD5
0d797156eb87a6e80a8f0db0553a7738

SHA1
4a0c3a561a06f630b6c5431d93fd45c9c99a7df6

SHA256
326a82c08e46c65ef8a206fa059aa06940aabc34addc4832674930b019c7980d

SHA512
e7d7b228f9ef68afecd07d69f6ee749a6d22a4085584d8be3e3bb4ac1e438d475b6889d205408fded56e983df7f407fa137cb346f9a5818f574bc5a41bd4a3b3

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit