8419acf61acbf6418a8c8908f8e8cf50483f3a0972b1f5339fbeb8b508f4dd61

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01-06-2024 06:23

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General

Target

2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe
Size

71KB
MD5

00a331d03de7fc87c812fb558132986e
SHA1

f3c6a6c61d1444d8260e981c09a3da2da0896949
SHA256

8419acf61acbf6418a8c8908f8e8cf50483f3a0972b1f5339fbeb8b508f4dd61
SHA512

10e05d8f4d7e96af8d650cd5b752a37e30c42ae8dde9b2ac8801398ef180792ac7289903890e2a76bd96e49a45c4ed8a4b922e103054c5090f8c4ee32200a55a
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTFK:ZRpAyazIliazTg

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3060	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"	2024-06-01_00a331d03de7fc87c812fb558132986e_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1296	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe
Token: SeDebugPrivilege	3060	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 3060	1296	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe	28
PID 1296 wrote to memory of 3060	1296	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe	28
PID 1296 wrote to memory of 3060	1296	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe	28
PID 1296 wrote to memory of 3060	1296	2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_00a331d03de7fc87c812fb558132986e_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1296
- 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:3060

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\XuNlf8KZR15kcIu.exe

Filesize
71KB

MD5
22c35de7448967ae9c489b497e847547

SHA1
fe9d0b5f8573ca110d7d7d8936963f09571e103e

SHA256
b5fdd2bb4dca9467eb4e3302460900643010f0c23c46d44db0beaf68b42c2ea4

SHA512
f77ca965d71356ea11bccbd09655eeb72c710566f0c9685bc5729f390852fb156031b62333d99728b79f2c66253068c7d351921bef05862983f31d760a555248

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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