709fda5f67ce10774ba93082410e662ed6491deda7d9a7c83460a739a841a43e

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
06/05/2024, 23:23

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General

Target

2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe
Size

71KB
MD5

4ce9f9fd9985d4f4613173bbfb8c7c89
SHA1

34bcfe0d4077a4075604199b1b59eb5b6c869b19
SHA256

709fda5f67ce10774ba93082410e662ed6491deda7d9a7c83460a739a841a43e
SHA512

407ecbc8afcc6266265f6d813afe414c68f700ddb879c3d0bec1c5e68edbab868028ab17285e24fe1990351aaa99bcc23b45061c8a2c2a78866106c70823799d
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTP:ZRpAyazIliazTP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2252	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"	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_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	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1752	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe
Token: SeDebugPrivilege	2252	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 2252	1752	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe	28
PID 1752 wrote to memory of 2252	1752	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe	28
PID 1752 wrote to memory of 2252	1752	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe	28
PID 1752 wrote to memory of 2252	1752	2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-06_4ce9f9fd9985d4f4613173bbfb8c7c89_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1752
- 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:2252

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\Fg8Kh7KaQaNYhcW.exe

Filesize
71KB

MD5
4e47a50863ff5445f6cc76719fc96594

SHA1
32274ccd1974d2bc3eb151c33f6322e81d62fc18

SHA256
d2fd7c51f6f60c9e604496c8dc9757f5184cd967672c5dcc732df014831e3bb0

SHA512
d26a2f0e3d91aa6d8b63dad8c484c636aaed26948ac50e60856535655047648c6ac783b3556af0e8daee09cfc61689cb0c90833ac0ddfaf685d8e3bd543a3ca0

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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