041ec80f09e80b9d5f6877e334e475f2ad09b5f6ffa39e29e4231b4a9aa71fc1

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 13:30

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe
Size

96KB
MD5

de2e83c380380e6fb8a501cc02dc9cee
SHA1

3313b5452ded862131d53bc6532fcdf8bd86f4a9
SHA256

041ec80f09e80b9d5f6877e334e475f2ad09b5f6ffa39e29e4231b4a9aa71fc1
SHA512

58c9893b67678b51329e720328da849cafca882b8f8b37559ccd487ba4009da42c5bbf907103656ed88be918b5a9d84947c739af93c29ef475983020a2019ecf
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazToofe7uhe9+5U:ZRpAyazIliazT/m7uEse

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

n5s4fMvpmpzOj0O.exeCTS.exe

pid process

3652 n5s4fMvpmpzOj0O.exe
972 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
3652	n5s4fMvpmpzOj0O.exe
972	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_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:

2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4232 2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe
Token: SeDebugPrivilege 972 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4232	2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe
Token: SeDebugPrivilege	972	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe

description	pid	process	target process
PID 4232 wrote to memory of 3652	4232	2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe	n5s4fMvpmpzOj0O.exe
PID 4232 wrote to memory of 3652	4232	2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe	n5s4fMvpmpzOj0O.exe
PID 4232 wrote to memory of 972	4232	2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe	CTS.exe
PID 4232 wrote to memory of 972	4232	2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe	CTS.exe
PID 4232 wrote to memory of 972	4232	2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_de2e83c380380e6fb8a501cc02dc9cee_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4232

C:\Users\Admin\AppData\Local\Temp\n5s4fMvpmpzOj0O.exe
C:\Users\Admin\AppData\Local\Temp\n5s4fMvpmpzOj0O.exe
2⤵
- Executes dropped EXE
PID:3652

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:972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
393KB

MD5
715a9e992d069fa7326d8d6ed190b3d6

SHA1
39ba2b95dd30ed197dc6010e8138ef8752109f75

SHA256
87c02e3ca3a9defbcb21d3cc5088e43b6bbcf4e68bafe83692addf5cce423e7a

SHA512
85c6eaa31ad25606799829a3dbb88fb39355dc7c591cb373e47c8b7dff7e1ca175370dfffc7a01eed120faeade14aefad2c15b814a9408176655192822c5fad2

Download Submit
C:\Users\Admin\AppData\Local\Temp\n5s4fMvpmpzOj0O.exe

Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/3652-13-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download