4d0be77858581900277c36cd37aa8bb35d10d122929d079d9a659b6462142c0f

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 10:28

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General

Target

2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe
Size

144KB
MD5

9e68a75663f2a590b4791c96c12a6a18
SHA1

f69e21d6324f59891c521e30642d31584c07143b
SHA256

4d0be77858581900277c36cd37aa8bb35d10d122929d079d9a659b6462142c0f
SHA512

d6427d48fead213ec47b888b07ba1df38db57786b8997ff50e0a99f9a2e8b4fb0009de6f360b2a43f0c1d0b497deec80982e5afa408acdf95ac16e5e27e7bc96
SSDEEP

3072:ZRpAyazIliazT5GANVPRNybvSy//4aFTg5:xZ8az4A7pNq5QQTY

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

PUPkns8ramoD2vk.exeCTS.exe

pid process

4596 PUPkns8ramoD2vk.exe
4192 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
4596	PUPkns8ramoD2vk.exe
4192	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_9e68a75663f2a590b4791c96c12a6a18_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_9e68a75663f2a590b4791c96c12a6a18_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_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 660 2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe
Token: SeDebugPrivilege 4192 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	660	2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe
Token: SeDebugPrivilege	4192	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe

description	pid	process	target process
PID 660 wrote to memory of 4596	660	2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe	PUPkns8ramoD2vk.exe
PID 660 wrote to memory of 4596	660	2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe	PUPkns8ramoD2vk.exe
PID 660 wrote to memory of 4192	660	2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe	CTS.exe
PID 660 wrote to memory of 4192	660	2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe	CTS.exe
PID 660 wrote to memory of 4192	660	2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_9e68a75663f2a590b4791c96c12a6a18_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:660

C:\Users\Admin\AppData\Local\Temp\PUPkns8ramoD2vk.exe
C:\Users\Admin\AppData\Local\Temp\PUPkns8ramoD2vk.exe
2⤵
- Executes dropped EXE
PID:4596

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:4192

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
394KB

MD5
51d77640033e92a405a82ba7f609bbc5

SHA1
14585dc47d4e9dc5980721317e21b6af9cf75b51

SHA256
97d4f12ac7b7c2f0083ca1926aebac4e66d565fc11c45f41c33db9c0d0da0ddd

SHA512
398580e1355594375e8eeeaf85075b8964e7388fbd55323e7351909d420fac6781102d63e8f36b57d577d0f140d3b7d25c609cc7fdfebf3c3b26ad8aa029f6bf

Download Submit
C:\Users\Admin\AppData\Local\Temp\PUPkns8ramoD2vk.exe
Filesize
73KB

MD5
d2778164ef643ba8f44cc202ec7ef157

SHA1
31eee7114eed6b0d2fb77c9f3605057639050786

SHA256
28b001bb9a72ae7a24242bfab248d767a1ac5dec981c672a3944f7a072375e9a

SHA512
cb2a5a2aeba9d6f6bfc4a3a4576961244c109aafb59f02134b03ebac4d16602ee7f141cc4adc519f15030c20e7e7d6585778870706b2ea4c74c1161729101635

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 Matrix ATT&CK v13

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Downloads