0b4029f5e50b052c2097903f2f96d120f5a253f96d2a0723d1bc2b272ae1da33

Analysis

max time kernel
120s
max time network
126s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/05/2024, 13:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe
Size

71KB
MD5

e9245927fdbc56e6ee46e6cecf082c59
SHA1

dd0c0b2a4f50d2272ffa8b3e9e5a8e0f65c99933
SHA256

0b4029f5e50b052c2097903f2f96d120f5a253f96d2a0723d1bc2b272ae1da33
SHA512

81f3779a901e7d17574c8695f8e2e2298a3c11b953701ea8305a10b51cc7cbaa83372306fc5e82b42533b60ae636a8325e30ae5245eac9152650b7fa5b51d0fd
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTf:ZRpAyazIliazTf

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2612	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"	2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1704	2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe
Token: SeDebugPrivilege	2612	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 2612	1704	2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe	28
PID 1704 wrote to memory of 2612	1704	2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe	28
PID 1704 wrote to memory of 2612	1704	2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe	28
PID 1704 wrote to memory of 2612	1704	2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_e9245927fdbc56e6ee46e6cecf082c59_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1704
- 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:2612

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\RtIz3UPFT1QUOFs.exe

Filesize
71KB

MD5
dff54fec16a771574e9db760ad927e6e

SHA1
16de55091064a6f3fc37657ad24e9fb92a686245

SHA256
a57850733b5b43f0abe84c0277eb19203b6aed8c97e3c6fed76a5edb26810bf5

SHA512
38b2bcae5459967a789e5f47e7ccf68eddbc5b7cf299fd93cb75b7dd314b26fcf6519155e4bb2a7414bb00eaf6f8b2bb62c63dca61f76e3722251fbd20fb8bca

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