753f211ec0e8661b13901f5aca280825c4928619475513ce10eec77fe6187dd3

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24-04-2024 18:02

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe
Size

71KB
MD5

f3599f4de181462094e9593d221be7c1
SHA1

85010906c4d95ce3accdb628d697e70635c20b45
SHA256

753f211ec0e8661b13901f5aca280825c4928619475513ce10eec77fe6187dd3
SHA512

cea5eaa579487de0c570515540e6bbd9d672968cad95cff61e5ffae4e84df9e3449096a01f55d2c3b059b9b2454a7c3fee0c2b336a8cde2c63c5554e1c845d77
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTt:ZRpAyazIliazTt

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3652	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2404	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe
Token: SeDebugPrivilege	3652	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 3652	2404	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe	86
PID 2404 wrote to memory of 3652	2404	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe	86
PID 2404 wrote to memory of 3652	2404	2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_f3599f4de181462094e9593d221be7c1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2404
- 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:3652

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
394KB

MD5
d74e14e7e6c5680fb15d39180969bb1f

SHA1
6fd4f300713c886e316a167cadb036ae98ee3744

SHA256
8bd001615e6ca9a783019468fa0092d40e77aee004db25f04e60272755e58be9

SHA512
f44ce5c84a085d449c792f30207755b1865472c05bce9ef3a3f62054ad96575af029f51b55822ddbe449f4710aa0ada8a8563495e112e3a51ce7581d765bfa54

Download Submit
C:\Users\Admin\AppData\Local\Temp\8PKg7BHej7SjHAt.exe

Filesize
71KB

MD5
3e3eb5123afa4cb31d2b77c8a436e0d1

SHA1
db87eb7e02314302334047700741e0b844925ca8

SHA256
465617cd773acd4b9c6e88bba52ba56b253ebbc62da521b0798ad37be19c7e7a

SHA512
80fd89e59e6ca5fb894bd16f97d7d14233928d69f81f91d9bab6470400296e28f0dc9efe6e9d192ae1834b03413b5a442fba73fcb2a0146e023a1f89ad69768c

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads