8c88dc32c2b63c8de28b92ce9b70b25965ee6cb94d9e4dae4f9b0ce9f277b96d

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
31-05-2024 15:49

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General

Target

2024-05-31_76fda4fe47d887a378b06eb1f374eff3_bkransomware.exe
Size

71KB
MD5

76fda4fe47d887a378b06eb1f374eff3
SHA1

d92c1d89019b00d1c3e1ed38b0ca0be732ad4b5c
SHA256

8c88dc32c2b63c8de28b92ce9b70b25965ee6cb94d9e4dae4f9b0ce9f277b96d
SHA512

a14fb860cffc038e9cd29ffa4520cbc12c984992fcd9adb5557bf44749bde7617970fd568942b01179aa624953ee0c5c3e9208c9f79d068ba85447640c714d6e
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT4:ZRpAyazIliazT4

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2324	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"	2024-05-31_76fda4fe47d887a378b06eb1f374eff3_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	2024-05-31_76fda4fe47d887a378b06eb1f374eff3_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1724	2024-05-31_76fda4fe47d887a378b06eb1f374eff3_bkransomware.exe
Token: SeDebugPrivilege	2324	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 2324	1724	2024-05-31_76fda4fe47d887a378b06eb1f374eff3_bkransomware.exe	28
PID 1724 wrote to memory of 2324	1724	2024-05-31_76fda4fe47d887a378b06eb1f374eff3_bkransomware.exe	28
PID 1724 wrote to memory of 2324	1724	2024-05-31_76fda4fe47d887a378b06eb1f374eff3_bkransomware.exe	28
PID 1724 wrote to memory of 2324	1724	2024-05-31_76fda4fe47d887a378b06eb1f374eff3_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_76fda4fe47d887a378b06eb1f374eff3_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_76fda4fe47d887a378b06eb1f374eff3_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1724
- 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:2324

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\6rYCIWI02uNOfQw.exe

Filesize
71KB

MD5
bf3a518d4aea66d0c963a6b6dbc9d013

SHA1
75c289c6cd9d549c2a9dfbfe2a3776f84ec03eb5

SHA256
4de61cdb102b8df0b229fccf3d76ea9ed62023d80ca75a83cdae217ac2b7b047

SHA512
15edf1e89a8d59cfd7a80c60713b97b69cbe9379511f1d9eb1647818b1503e6aff6df2e6b480deedcd7443dc17bd187fcf92c250c382c857da7852b84cd74611

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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