9449063ddf35992ec5b1fa2c7d2df722bccfc9890ba6d33b0da503065abcf407

Analysis

max time kernel
134s
max time network
104s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 07:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exe
Size

71KB
MD5

61202a31009376eb3df92aed40bcd089
SHA1

d839a5c53dc2f91ea9a985e77a3a61dd8d74da92
SHA256

9449063ddf35992ec5b1fa2c7d2df722bccfc9890ba6d33b0da503065abcf407
SHA512

59cc9984879c043f89c30592b48a1184db474c8a393321b7de9d363080d82cb57f78b5a4106d406735456a83902727c8b7ffd1c51e56c86e3abcb9cf21b2921e
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTFL:ZRpAyazIliazTFL

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

1880 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
1880	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-23_61202a31009376eb3df92aed40bcd089_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:

2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 3980 2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exe
Token: SeDebugPrivilege 1880 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	3980	2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exe
Token: SeDebugPrivilege	1880	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exe

description	pid	process	target process
PID 3980 wrote to memory of 1880	3980	2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exe	CTS.exe
PID 3980 wrote to memory of 1880	3980	2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exe	CTS.exe
PID 3980 wrote to memory of 1880	3980	2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_61202a31009376eb3df92aed40bcd089_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3980

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:1880

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

Loading Replay Monitor...

Downloads

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

MD5
e6b376e65ecb4923102c65c59c6761a4

SHA1
67c75c5a156f812ad2fd28108477a7e155c4015e

SHA256
61ac1abb91a80879d518394c0cbe45d5253217f6c73035d739502ec548fedd2d

SHA512
30673c804b3b136d46891c7e24a25a7c4a60fa1ee9be3abdc407e6ae79e9b5fea80b93c4c7767e2d52ec5ec4a4ea4f7f9bec2d8faf58c4f27066e76dc5f71fdd

Download Submit
C:\Users\Admin\AppData\Local\Temp\8p5xEH0rtILrleX.exe
Filesize
71KB

MD5
c0d9aba861a0c5d23a271dc988b9421d

SHA1
c1798c09299410271f3d671cd40c56309e356af8

SHA256
3da1b25b7b01aa67770891f1e5435bec4f787a45d88da5a3a1ce18e4acf8e0e5

SHA512
23becc8508226133692500c015236a5c4eb70d63ee860707f80f2ecd8b779f3a52f3d3b6974abc79f5694bb27e8cbe6c030931e45560c9bd04f5dd278d713f27

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

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit