f64298ab1394a6bd229de18b15f1991caccd6fb6d579b3c968de4241beb3251f

Analysis

max time kernel
67s
max time network
53s
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 16:34

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General

Target

2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe
Size

135KB
MD5

80d1a696584849037be8341ad5e70905
SHA1

0fb5eed91a7fcd98e18703d77d16a13c1b2d1ee9
SHA256

f64298ab1394a6bd229de18b15f1991caccd6fb6d579b3c968de4241beb3251f
SHA512

33941f1c5061513265c04232de76f15bc8377107a0d106aa1b7609bfa111339ab0d5b2dc3a03c59b15be7d428618cdc76ec899c9ee3efb1494c47a561a0b19f6
SSDEEP

3072:ZRpAyazIliazTBlm+fojBIxRCgokd2X6K:xZ8azllgjBISgoXR

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

fBOqMsiZapK7CmG.exeCTS.exe

pid process

3048 fBOqMsiZapK7CmG.exe
2872 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
3048	fBOqMsiZapK7CmG.exe
2872	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_80d1a696584849037be8341ad5e70905_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_80d1a696584849037be8341ad5e70905_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_80d1a696584849037be8341ad5e70905_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4792 2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe
Token: SeDebugPrivilege 2872 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4792	2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe
Token: SeDebugPrivilege	2872	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe

description	pid	process	target process
PID 4792 wrote to memory of 3048	4792	2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe	fBOqMsiZapK7CmG.exe
PID 4792 wrote to memory of 3048	4792	2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe	fBOqMsiZapK7CmG.exe
PID 4792 wrote to memory of 3048	4792	2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe	fBOqMsiZapK7CmG.exe
PID 4792 wrote to memory of 2872	4792	2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe	CTS.exe
PID 4792 wrote to memory of 2872	4792	2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe	CTS.exe
PID 4792 wrote to memory of 2872	4792	2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_80d1a696584849037be8341ad5e70905_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4792

C:\Users\Admin\AppData\Local\Temp\fBOqMsiZapK7CmG.exe
C:\Users\Admin\AppData\Local\Temp\fBOqMsiZapK7CmG.exe
2⤵
- Executes dropped EXE
PID:3048

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:2872

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

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Downloads

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

MD5
987983d015e01cb4a5a4ccbc2bba6f5d

SHA1
08aae512e9b59fec1001be91fee2f176e543c164

SHA256
dae3f68784527583b504bec6288f4e26c83a6531e5bf775ebcc0395e537fb6be

SHA512
543d80e42a618b49cc132d8f8197c521c10f513ff40bf5f2e4adc472e19ad211dae9e3c23ff1c903eced58219df269d82dc964f34861333c3b8cf7c83251b38a

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C:\Users\Admin\AppData\Local\Temp\fBOqMsiZapK7CmG.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