c4c77be8ff680ad6f110e7a7f6abafcb0712b391e88db1c4b0129520546255a1

Analysis

max time kernel
132s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 07:53

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe
Size

71KB
MD5

5f655bdaada31d9fc11f5da963bb6a31
SHA1

6a9ccec5f385d92fefca9890e166f7340c2c8e80
SHA256

c4c77be8ff680ad6f110e7a7f6abafcb0712b391e88db1c4b0129520546255a1
SHA512

82bcfb501828d7ce05ab811b3fa9c5d38aa960e4b699ae66d7129466d1adbe6d397ebae8120cf6ed3e53b02ceac213508dfb6a083e62b5ce41558f3b186cb3e2
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTs:ZRpAyazIliazTs

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

884 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
884	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

CTS.exe2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe

Drops file in Windows directory 2 IoCs

Processes:

2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4256 2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe
Token: SeDebugPrivilege 884 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4256	2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe
Token: SeDebugPrivilege	884	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe

description	pid	process	target process
PID 4256 wrote to memory of 884	4256	2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe	CTS.exe
PID 4256 wrote to memory of 884	4256	2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe	CTS.exe
PID 4256 wrote to memory of 884	4256	2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_5f655bdaada31d9fc11f5da963bb6a31_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4256

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:884

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
392KB

MD5
66dc4f36cba600a45439a2453066cc94

SHA1
364ee260f2734d2eb21e6e4442cec0237eed50be

SHA256
43e1b6236278a4c82e80d4111581b18bbd647af2232130539e48426cb3100c92

SHA512
66235c00cfa5533a911432e926d612166dcf592ba7cfa919b7bf0b57c3f12121d2391cb6a9070b2c94de749ee53ec07212c5ac3f44ec0a5c2a9da058b6738c7e

Download Submit
C:\Users\Admin\AppData\Local\Temp\xzLD9lCDf3VApMX.exe
Filesize
71KB

MD5
096bdb2e41bc2791a630e1f5b78f44b3

SHA1
58b3084a695e03de25e802c872de4d32886b5bbc

SHA256
17d89deae505d512c1f9653bc4c6922910b8e0dad8e2b7114c94bd99b0ddd141

SHA512
fa94f01d0b27e11ff1fdadf9978b4892b3005fb8260c82a5a7b00030f97d3333f0f64347a782f15c2fc4947a203c94eae24bea1f6926d5394fcc0d083b8aba9f

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

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit