6d98eac96644e4fce11c830d90d215b3953ff38dec072892e5d0dd5b2f80c298

Analysis

max time kernel
134s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 08:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe
Size

172KB
MD5

22cf817b2e56d2407ebea36cbb151ce4
SHA1

ad341331ab6bd9b29fce272f6a6b0e960fbf0534
SHA256

6d98eac96644e4fce11c830d90d215b3953ff38dec072892e5d0dd5b2f80c298
SHA512

d9f945d0ab3c25cbb05c6d4950ab2f81bb0312bbfb21eaeb096a21dc8e556a6e771107293b40c8507124cd1f6489b1a9a641b0bf327d749169c03bf8740a755d
SSDEEP

3072:ZhpAyazIlyazTNao84K0NIGEbzWjFFhOXyowj7CdZhXnPdyHHQtl:hZMaz5n5K0NIGEXWvhO0fCvxnP4nEl

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

5RtWhlxpWGhCJD3.exeCTS.exe

pid process

2428 5RtWhlxpWGhCJD3.exe
3020 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

pid	process
2428	5RtWhlxpWGhCJD3.exe
3020	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

CTS.exe2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe

Drops file in Windows directory 2 IoCs

Processes:

2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4100 2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe
Token: SeDebugPrivilege 3020 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4100	2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe
Token: SeDebugPrivilege	3020	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe

description	pid	process	target process
PID 4100 wrote to memory of 2428	4100	2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe	5RtWhlxpWGhCJD3.exe
PID 4100 wrote to memory of 2428	4100	2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe	5RtWhlxpWGhCJD3.exe
PID 4100 wrote to memory of 3020	4100	2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe	CTS.exe
PID 4100 wrote to memory of 3020	4100	2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe	CTS.exe
PID 4100 wrote to memory of 3020	4100	2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_22cf817b2e56d2407ebea36cbb151ce4_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4100

C:\Users\Admin\AppData\Local\Temp\5RtWhlxpWGhCJD3.exe
C:\Users\Admin\AppData\Local\Temp\5RtWhlxpWGhCJD3.exe
2⤵
- Executes dropped EXE
PID:2428

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:3020

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
392KB

MD5
d66aae17e951c33924df2b0c29fdff13

SHA1
2f5b1902dba9026cf365fb87a97c67a359476754

SHA256
8c5c955c0cb4a0bcf1eb757f5c9f835f81a2c2315fbb1223ee920b91091d6c0e

SHA512
fa7f30258e0d96a1c0792bb946c81dd6f8f9cefc28fb7aa1aa88dfbf04d3a7f298357b4bf61b650fdc80b6cb1d1de33a26e0c346bd2df80281e731240ea4b4fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\5RtWhlxpWGhCJD3.exe
Filesize
172KB

MD5
63d1fb6b2f20656173152cf3d97eba9c

SHA1
2c18990feb1ee105cc86c96a60fde761b6d4286a

SHA256
a358ce80785cdeaccb883c8398fb0c4d710ad7a1ce865aaef1a58684a011ae1f

SHA512
8aaa7b7c3123cf3062903991b9ebcd58168a37a3371239330d06116a7363cb83da11dc4d6abd2dd52cae92ebab5d4214451869e3ee5fb5986fbb6ad482fe01a9

Download Submit
C:\Users\Admin\AppData\Local\Temp\5RtWhlxpWGhCJD3.exe
Filesize
100KB

MD5
db697c943fcb215f757f9c22c907c568

SHA1
c57d891472f5ede8b1ee5d9bd6f5ad8fc8e9e5d7

SHA256
07c96337729e3c4c986e8f5660a97cb475c4c04842606be2654b37892af57de9

SHA512
bfa5c34d8c78015ccf96a2ef1c6d8f82157eb88680139bdbb51c55e3cd2a7c41bf364a364fd62b180b202cdf4f3d7d31c3710b8709c1d25a639bb00dfc97b646

Download Submit
C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit