bc023b4bd582e6e9ff373fe5dabb0448cb4bb252f1bf6962cddf77f8980a6518

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
01/06/2024, 00:30

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General

Target

2024-06-01_2135b0b34680d3fb3c2f861d1702bf10_bkransomware.exe
Size

71KB
MD5

2135b0b34680d3fb3c2f861d1702bf10
SHA1

98bd68b545bf2dbdc9405543e48b2b5c3848d323
SHA256

bc023b4bd582e6e9ff373fe5dabb0448cb4bb252f1bf6962cddf77f8980a6518
SHA512

c1d412eddbcde4cfed1938091e5c91311e3361790a6ccbe91bf6c58bf075845713733ce10b82f377dc1dc15175a87b5883b77b82f17f573acfa2f235e8602b76
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTu:ZRpAyazIliazTu

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2004	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_2135b0b34680d3fb3c2f861d1702bf10_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	2024-06-01_2135b0b34680d3fb3c2f861d1702bf10_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2088	2024-06-01_2135b0b34680d3fb3c2f861d1702bf10_bkransomware.exe
Token: SeDebugPrivilege	2004	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 2004	2088	2024-06-01_2135b0b34680d3fb3c2f861d1702bf10_bkransomware.exe	28
PID 2088 wrote to memory of 2004	2088	2024-06-01_2135b0b34680d3fb3c2f861d1702bf10_bkransomware.exe	28
PID 2088 wrote to memory of 2004	2088	2024-06-01_2135b0b34680d3fb3c2f861d1702bf10_bkransomware.exe	28
PID 2088 wrote to memory of 2004	2088	2024-06-01_2135b0b34680d3fb3c2f861d1702bf10_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-01_2135b0b34680d3fb3c2f861d1702bf10_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_2135b0b34680d3fb3c2f861d1702bf10_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2088
- 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:2004

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\CfLGOXsWMz5oOx6.exe

Filesize
71KB

MD5
87b60c19c372d6c8d7f94a999237075e

SHA1
f46d53eddbd61880cbbb87ba9fb5d2e699dff84c

SHA256
dbf55d82bf44873065308f19e6058c576b3b129ceb30afe3a1fa10d14a4bfa87

SHA512
bef45974095b3e867af0946a87aa28a32a30c62bfc0a744aed705786bc0937803c99d42f15ceb1a929311aee9e2b6e6b3fb5eb4e2cc283e5357f9e3e9d480101

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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

Replay Monitor

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Downloads