f6aa4fbf74676f93337a17e15274ffc9450c2a627f38fe38e224f9de9da18e43

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
27-05-2024 06:35

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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

2472 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
2472	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 1276 2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe
Token: SeDebugPrivilege 2472 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	1276	2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe
Token: SeDebugPrivilege	2472	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe

description	pid	process	target process
PID 1276 wrote to memory of 2472	1276	2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe	CTS.exe
PID 1276 wrote to memory of 2472	1276	2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe	CTS.exe
PID 1276 wrote to memory of 2472	1276	2024-05-27_96d4356130a5c6bdafa20c33e6864d57_bkransomware.exe	CTS.exe
PID 1276 wrote to memory of 2472	1276	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:1276

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:2472

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\Vo5I7YsHjSqEYuF.exe

Filesize
71KB

MD5
9094a36ffebe784608b7144bb9fa2dc1

SHA1
cfcecb7049c4e7da627ba363a711d0b7c1dfba24

SHA256
d5395e44f8d9d1fa8d5b9e2b6e3602a73b214939df2ff6336108dd17e6b43aa8

SHA512
e6ef0e6528de73af8bf247b8235e3ca92423945809c306155479650c071860831abf747a3ff87dcaa244de431e91ef0bd2d4fbb8a4e0dec67ed4760f06ad1079

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit