38c40baede7dd1c61af8ed36195f224d8cde106a7a6e7e1a12e9d3a2b111d24a

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
07/06/2024, 04:22

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General

Target

2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe
Size

71KB
MD5

166adf259cee1b16f6f3009627263977
SHA1

e917fd37f5d3b8443dfb9d9325861f8ff2315d75
SHA256

38c40baede7dd1c61af8ed36195f224d8cde106a7a6e7e1a12e9d3a2b111d24a
SHA512

57456760d645773a5a7c14abc17065b10465c6bd2f91b3dd7fe7fc127d1fc620c7642be4ff5fa22e182b7bba0c1048b8c93f9d3bacb231be173426d3566022f4
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTv7:ZRpAyazIliazTT

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2320	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"	2024-06-07_166adf259cee1b16f6f3009627263977_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	2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe
Token: SeDebugPrivilege	2320	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 2320	2184	2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe	28
PID 2184 wrote to memory of 2320	2184	2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe	28
PID 2184 wrote to memory of 2320	2184	2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe	28
PID 2184 wrote to memory of 2320	2184	2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-07_166adf259cee1b16f6f3009627263977_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2184
- 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:2320

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\NX40K25NXxgP0DL.exe

Filesize
71KB

MD5
89aacae66987ace222f10eee8f9a4422

SHA1
5175d18106610eec49d01412c61ab373b8adc37c

SHA256
35798cb91e226006d0a50c3cb091d5a7e2624afbb61ea1edf47fce9a68e0a8bf

SHA512
6486c01955e5eb187ef334cb53392f3566ec09455473a5add76141c8312d92fd82bf15c18bf9b1bb251ca4c979e1a6926653b235dca7bde9ecc7398c4b4d4d2b

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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