d2cd33bdabafa29fb4c3fa2da8265a37014d155d40076b1c0ae3ff98fe613650

Analysis

max time kernel
147s
max time network
149s
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 04:35

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General

Target

2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe
Size

176KB
MD5

59e8c5a0d6f839d9c75124d2e183ff0f
SHA1

105c931079c9596eb01c1366f38fac2b2f5deff7
SHA256

d2cd33bdabafa29fb4c3fa2da8265a37014d155d40076b1c0ae3ff98fe613650
SHA512

19e0cde2aee3da971a4cf5f98790225f1c6c29eca2e6cd6374e636d3db7b3c5466f0bc07e37191fa78a928e7ffb7a7c118f91947f3bc55004f53f36def170330
SSDEEP

3072:ZRpAyazIliazTtRUZpiSVDS4+3RHNfWpStUc///+7Ks:xZ8az3spiSVr+xlOWof

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

nqtpRIBZSl5D8Ng.exeCTS.exe

pid process

5016 nqtpRIBZSl5D8Ng.exe
1716 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
5016	nqtpRIBZSl5D8Ng.exe
1716	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_59e8c5a0d6f839d9c75124d2e183ff0f_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_59e8c5a0d6f839d9c75124d2e183ff0f_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_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1936 2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe
Token: SeDebugPrivilege 1716 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1936	2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe
Token: SeDebugPrivilege	1716	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe

description	pid	process	target process
PID 1936 wrote to memory of 5016	1936	2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe	nqtpRIBZSl5D8Ng.exe
PID 1936 wrote to memory of 5016	1936	2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe	nqtpRIBZSl5D8Ng.exe
PID 1936 wrote to memory of 1716	1936	2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe	CTS.exe
PID 1936 wrote to memory of 1716	1936	2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe	CTS.exe
PID 1936 wrote to memory of 1716	1936	2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_59e8c5a0d6f839d9c75124d2e183ff0f_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1936

C:\Users\Admin\AppData\Local\Temp\nqtpRIBZSl5D8Ng.exe
C:\Users\Admin\AppData\Local\Temp\nqtpRIBZSl5D8Ng.exe
2⤵
- Executes dropped EXE
PID:5016

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:1716

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

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Downloads

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

MD5
53020d703f787277d1351b92237066a9

SHA1
316f88421241c4bbdfd98a461e0783f54024306f

SHA256
3760c881f9cbd52b03c2f87cf282ea1c2eff902fbbd14d25bffa5f08d4ee5fbd

SHA512
bc083e646626191d8d1a77baae20078d35105cbed96494163fb4ae396225dfa854e7e71bc760b29fe699fbb32788b1313e8cae2926ece3215e54ce6385626176

Download Submit
C:\Users\Admin\AppData\Local\Temp\nqtpRIBZSl5D8Ng.exe
Filesize
105KB

MD5
19d621a4b2d26d8fa8002548a1b04a32

SHA1
0d0c5e3b06f56ad12a77da46ab3fdab81acda628

SHA256
81a618f21cb87db9076134e70388b6e9cb7c2106739011b6a51772d22cae06b7

SHA512
78da0a9f19b4eb39db3eb678ac71e170cf279deb37282e9f3069e74c8bb2597c6067eb14810bd67f7a43ddf1395ae19157456163c88554d21a01113be34136a9

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

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit