515919e39d74f861a0fc56e3c4bd950f266a8caef7a421bd3410741fb1d8bda3

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
28-04-2024 03:48

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General

Target

2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe
Size

71KB
MD5

a7541b7c8fd4cd4ed49b8a8d5039b6a0
SHA1

448fba6b9a520b8e8f266d61b20442f789b6a7a7
SHA256

515919e39d74f861a0fc56e3c4bd950f266a8caef7a421bd3410741fb1d8bda3
SHA512

8be83a99e568990b082af11df45dc22ba0b2f7255cf7300626b4059e11da3a48024f8ecf77c00e249e282d22ed6623aed429f67b6d5581ade9e4a919ab294967
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTC:ZRpAyazIliazTC

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2992 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
2992	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_a7541b7c8fd4cd4ed49b8a8d5039b6a0_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_a7541b7c8fd4cd4ed49b8a8d5039b6a0_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_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2912 2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe
Token: SeDebugPrivilege 2992 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2912	2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe
Token: SeDebugPrivilege	2992	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe

description	pid	process	target process
PID 2912 wrote to memory of 2992	2912	2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe	CTS.exe
PID 2912 wrote to memory of 2992	2912	2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe	CTS.exe
PID 2912 wrote to memory of 2992	2912	2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe	CTS.exe
PID 2912 wrote to memory of 2992	2912	2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_a7541b7c8fd4cd4ed49b8a8d5039b6a0_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2912

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:2992

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\Temp\ioxfiDX8JHwSkXV.exe
Filesize
71KB

MD5
12a8798d511f44c712bce801ea69b5e3

SHA1
72752cfe27ab00aa5630fd5f5e188ed74c237352

SHA256
44a25822aead736790b69d86e48fdc1d0d0178efe97fd77608d334ffe2d08e5b

SHA512
c8eccf4f5189e1399db012f87dc8ef67ac8f03d9674e34b78bc74520f97254a157564b802cd4d27461868cfbe454bc04f48bacf2fb3a5696f99aa8305177b454

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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 Enterprise v15

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Downloads