2bafabf4ec6f842aa84449d36bded81d695d710b3c541d1aa6316bd449de9ceb

Analysis

max time kernel
55s
max time network
50s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 06:25

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General

Target

2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exe
Size

71KB
MD5

71125f0cda5a596d3317f22faf9f25e6
SHA1

6cc3a6fbc26224645185de54ef6cbabb18cf0447
SHA256

2bafabf4ec6f842aa84449d36bded81d695d710b3c541d1aa6316bd449de9ceb
SHA512

8267b1d96affdc8f2dd8607e8c29cdd923fb86280fa1418e672990d5f96a16988f0f1bcbe6331ba73a822bec15c56639c0b9acae79438ba9c8b8ce0045208d72
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTL:ZhpAyazIlyazTL

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

1080 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
1080	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_71125f0cda5a596d3317f22faf9f25e6_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_71125f0cda5a596d3317f22faf9f25e6_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_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 5100 2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exe
Token: SeDebugPrivilege 1080 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	5100	2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exe
Token: SeDebugPrivilege	1080	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exe

description	pid	process	target process
PID 5100 wrote to memory of 1080	5100	2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exe	CTS.exe
PID 5100 wrote to memory of 1080	5100	2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exe	CTS.exe
PID 5100 wrote to memory of 1080	5100	2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_71125f0cda5a596d3317f22faf9f25e6_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5100

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:1080

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

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Downloads

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

MD5
60ed936740a48d4502e002396091138e

SHA1
8d037c3f3d4aa4513d089aeb30283635a7c22865

SHA256
1d7cfd01accec3dbed14ddb1e0177294746b56e179895b965a97a51c82d89aff

SHA512
06d376cc0cec0396c09c153322d63d4e4fe468aecb77b05c1d539d86f2828057d1554d55ac29b663cd32531ab41a54df4f0646370740bc7589736a82721320b1

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C:\Users\Admin\AppData\Local\Temp\jxJMNwABWmpdNbk.exe
Filesize
71KB

MD5
c06747a2007ccf0b32fc29976e2172c5

SHA1
d47086a46fc8c26610f449f2d1d93803e882e0d1

SHA256
c3d93ed2e35ddaa1034ee7a2cc2b316e4daf55e61b9bb9a72ba61129b78502e0

SHA512
ddc247fb50a6fe0a69bf76bcb95f6c2aca9d2878298d36dbff4e08d0d51a3c46c8e89768ecffee280060c0898757ce23b3714fe258fe07c25cbd07c58b74561a

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C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads