a1efb2ed219bc10c012cd3fbe23e384fbcf1527edcd7f6ae25839bb790905fee

Analysis

max time kernel
118s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
20/05/2024, 14:30

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-20_10461478d2f9b5568be8b35f3f08f30a_bkransomware.exe
Size

71KB
MD5

10461478d2f9b5568be8b35f3f08f30a
SHA1

9928ca67d60318bc76a1bc6bf0f15924619626d3
SHA256

a1efb2ed219bc10c012cd3fbe23e384fbcf1527edcd7f6ae25839bb790905fee
SHA512

432744d9390be9a536599bfb9c12493ce842fcbc616eb89cc3257055e4be576ba47eceb2b596d034bed2b2b92e7e03fddf65ba35153f7223a41a65f97c076605
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTOl:ZRpAyazIliazTU

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2224	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"	2024-05-20_10461478d2f9b5568be8b35f3f08f30a_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	2024-05-20_10461478d2f9b5568be8b35f3f08f30a_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2220	2024-05-20_10461478d2f9b5568be8b35f3f08f30a_bkransomware.exe
Token: SeDebugPrivilege	2224	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2224	2220	2024-05-20_10461478d2f9b5568be8b35f3f08f30a_bkransomware.exe	28
PID 2220 wrote to memory of 2224	2220	2024-05-20_10461478d2f9b5568be8b35f3f08f30a_bkransomware.exe	28
PID 2220 wrote to memory of 2224	2220	2024-05-20_10461478d2f9b5568be8b35f3f08f30a_bkransomware.exe	28
PID 2220 wrote to memory of 2224	2220	2024-05-20_10461478d2f9b5568be8b35f3f08f30a_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-20_10461478d2f9b5568be8b35f3f08f30a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_10461478d2f9b5568be8b35f3f08f30a_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2220
- 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:2224

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\Temp\meHoNLmGWl7EC7e.exe

Filesize
71KB

MD5
0af4e25acd12635d0c0bb10dd98c1ae8

SHA1
9db0edc10893cf970fdfd222dec9c5f79ae423c9

SHA256
41bb035412c976ff86f656972f648d1ca8b6a3bbe780443a076c2805c734e51b

SHA512
df34f7a7045c7ff36d2b958f7a98d269fb97cd7ad3a0f3d80b0fd329a6547b36b686d6cbcc97d04789366a4b7efd1cdda5ae0f4fd8665ac95abd647c07ae2f20

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