07be49e93103b4a5603a0ff899260358920471bb59a5fe6f39e6bdfd3019cfab

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 07:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
Size

71KB
MD5

4638616fee07885724f802596bdc0c3f
SHA1

be2fce14abc69512198082bd1535a8b366c7bbf7
SHA256

07be49e93103b4a5603a0ff899260358920471bb59a5fe6f39e6bdfd3019cfab
SHA512

813584e4682cc5e147b925b22ab1ec05c5b3c74fb9eab75dabee52a0de4c875e5d718e6f39f127666c7e76072ee422ca2612c3b529be787604a2e5343d5e9c98
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTJ:ZRpAyazIliazTJ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

656 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
656	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-23_4638616fee07885724f802596bdc0c3f_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:

2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1612 2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
Token: SeDebugPrivilege 656 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1612	2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
Token: SeDebugPrivilege	656	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe

description	pid	process	target process
PID 1612 wrote to memory of 656	1612	2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe	CTS.exe
PID 1612 wrote to memory of 656	1612	2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe	CTS.exe
PID 1612 wrote to memory of 656	1612	2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_4638616fee07885724f802596bdc0c3f_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1612

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:656

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
394KB

MD5
6c2341aff40c6530b50c31cc3d89253c

SHA1
6d45d7dd765f48bb4f215c3ad7100f786037ffb9

SHA256
7f8888c47463093ede2b57e7df030902cf582b18b2cb8e55dcaff35ffff8810e

SHA512
a5ea757e62497919ce892dc52a5fe2875fa442b2be6f20a7b0b17397783847f5d366e02823c1e5650ade3a7574e79f34b6e826beeb62818ef6735a1cb4435508

Download Submit
C:\Users\Admin\AppData\Local\Temp\3sAorOnvsBenToP.exe
Filesize
71KB

MD5
164c6822d52bf90df00e2d4facab1e3e

SHA1
ad4dec1bd60bbf195e9da6cef8d0a0bddc140551

SHA256
814ff0877697097863db0bfda7959db37bba97287017e5b51ad8e06c8c4c225e

SHA512
2cd1031305ead0fe8017954a434b2e057e2167de73f2c9bee31b06347b8ac0606c81bdb16c426a7f41575e31f886e2346545ef2e5139558c3a7fdc06789a402f

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

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit