57bf8f2ed0d8835cf2825d5542de179a1f6191943fef6fa0d3646075eddc5e26

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 03:24

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General

Target

2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe
Size

135KB
MD5

160883868a17fa0171b08a033819151a
SHA1

baba184bdc16a97fb9b124ec358845e23a2bfe72
SHA256

57bf8f2ed0d8835cf2825d5542de179a1f6191943fef6fa0d3646075eddc5e26
SHA512

a817113ddd788712c3329d283d0265312cb1a6d191f8d4f3c148bf2690416861530151f4d2f902c91dd384c6f9a073ea90442f318e4bb785402a91720792b928
SSDEEP

3072:ZRpAyazIliazTTwrzhDOWg0b9PXzAJsGGtVA9GsO7D/:xZ8azPwpXx9CdoZ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

JiVyE1Em8zHq3ok.exeCTS.exe

pid process

2448 JiVyE1Em8zHq3ok.exe
4748 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
2448	JiVyE1Em8zHq3ok.exe
4748	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_160883868a17fa0171b08a033819151a_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_160883868a17fa0171b08a033819151a_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_160883868a17fa0171b08a033819151a_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2552 2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe
Token: SeDebugPrivilege 4748 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2552	2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe
Token: SeDebugPrivilege	4748	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe

description	pid	process	target process
PID 2552 wrote to memory of 2448	2552	2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe	JiVyE1Em8zHq3ok.exe
PID 2552 wrote to memory of 2448	2552	2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe	JiVyE1Em8zHq3ok.exe
PID 2552 wrote to memory of 2448	2552	2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe	JiVyE1Em8zHq3ok.exe
PID 2552 wrote to memory of 4748	2552	2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe	CTS.exe
PID 2552 wrote to memory of 4748	2552	2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe	CTS.exe
PID 2552 wrote to memory of 4748	2552	2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_160883868a17fa0171b08a033819151a_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2552

C:\Users\Admin\AppData\Local\Temp\JiVyE1Em8zHq3ok.exe
C:\Users\Admin\AppData\Local\Temp\JiVyE1Em8zHq3ok.exe
2⤵
- Executes dropped EXE
PID:2448

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:4748

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
394KB

MD5
001118020d554771232600f6141d904a

SHA1
ff92283bf41f7a60a561794c59dc5d6139c0ca0d

SHA256
64a8aa0940283fb78bedc9b19a263e6d387affd93192f04502651ca4412a04ac

SHA512
0566cbac121461f4820455a2a6dbd9f7ef70625cd1fb29949b12c1e5793c7879280da3e122136137cfbbca80bbbf7fbb928ad24470f04ba364fe6db260ed8a9a

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C:\Users\Admin\AppData\Local\Temp\JiVyE1Em8zHq3ok.exe
Filesize
64KB

MD5
e97c622b03fb2a2598bf019fbbe29f2c

SHA1
32698bd1d3a0ff6cf441770d1b2b816285068d19

SHA256
5c1af46c7300e87a73dacf6cf41ce397e3f05df6bd9c7e227b4ac59f85769160

SHA512
db70c62fb35a8e5b005f13b57c1ebbf6c465f6ff0524422294c43e27fb4aa79379dc1e300ad11dc2354405c43b192ae06b91c0f525a1f2617e4d14673651a87d

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C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit