c9add5f52d3c90de60ecc20adae785df207a145d476ee19f8017c3102b15a8ac

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 14:43

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exe
Size

71KB
MD5

3c1774b6875cdd2898e01e5113914799
SHA1

0810587111690bb8d8063f2bcdaa5f290572bced
SHA256

c9add5f52d3c90de60ecc20adae785df207a145d476ee19f8017c3102b15a8ac
SHA512

288926c623fad2dbc425379daccaa70dd35715dfd68efa5fde69fe061765aa8d64ed305eb61d752fae28d232d820a8f5f5139046482d1b87c98fadd4d95f4224
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT7:ZhpAyazIlyazT7

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

1188 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
1188	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_3c1774b6875cdd2898e01e5113914799_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

Processes:

2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4796 2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exe
Token: SeDebugPrivilege 1188 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4796	2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exe
Token: SeDebugPrivilege	1188	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exe

description	pid	process	target process
PID 4796 wrote to memory of 1188	4796	2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exe	CTS.exe
PID 4796 wrote to memory of 1188	4796	2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exe	CTS.exe
PID 4796 wrote to memory of 1188	4796	2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_3c1774b6875cdd2898e01e5113914799_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4796

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:1188

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
901206c0824c8619a90240483a13fee0

SHA1
b6882edfc9ce40530a7f8f5640b5f382d5785b12

SHA256
620a1e4618f18413f03365e075092f1bb82ac766538e6071b34ad7b4cbeba49b

SHA512
8728b7049901386910f52746bf47c2cb72b4f2729192619a1b1b4c0517ecc021434e0761590d77b1357484822620a513f1975bf62c4a04062e148187f4ad8a69

Download Submit
C:\Users\Admin\AppData\Local\Temp\KAUthjjF4NHhTqc.exe
Filesize
71KB

MD5
d24cef6adb0d6383fcb9161f79af225f

SHA1
a9bc79c793b1de3ef8d9c7a5f05c2ba3041c06f3

SHA256
dc162a0e53cc66f81886c99117b98b2f13492d8cda17441f0150fcf2b515104b

SHA512
36659a4033b35551f5762dcb56b6dcf1b6d9346eb764b91bb6f4946cba717de2de1b880950943324fddc30041fe5ebb1638ff54f8b5d17e1b3f734b8e4d7a2d3

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

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit