60a22cf5d2bce6099d145d51db7a34c19d1513e9bd6de46170fd68839d0ef6b9

Analysis

max time kernel
94s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 19:27

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General

Target

2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe
Size

71KB
MD5

4749b11bca35a64b9a61ca4497bc20d9
SHA1

e1633a4305da4effd1743fc476c2a919322b80b1
SHA256

60a22cf5d2bce6099d145d51db7a34c19d1513e9bd6de46170fd68839d0ef6b9
SHA512

35250086c8c03f3576880cf05e9a99f68ed49bcc6a7392a3e8911090eb3880f34511b00c6620e27792f26006061c402d058c45ada05ab523202267c5823620a8
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTZ:ZhpAyazIlyazTZ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

5048 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
5048	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.exe2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_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"	2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe

Drops file in Windows directory 2 IoCs

Processes:

2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4580 2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe
Token: SeDebugPrivilege 5048 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4580	2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe
Token: SeDebugPrivilege	5048	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe

description	pid	process	target process
PID 4580 wrote to memory of 5048	4580	2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe	CTS.exe
PID 4580 wrote to memory of 5048	4580	2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe	CTS.exe
PID 4580 wrote to memory of 5048	4580	2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_4749b11bca35a64b9a61ca4497bc20d9_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4580

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:5048

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
789KB

MD5
1b044917c5b45532ca3dab8e9cf55602

SHA1
d9c709f01f6ec27ffb10666bfd84bc42021f362d

SHA256
e8cae3c9cf3d32351352de6bc0577cd30799d9820105038d3a27a44f275de3d9

SHA512
ef0b4c8613f63af8f90d633356c98bddbabfbe8145b01058684f8da343f89f7e42c45bf15e2f3a3076f2c186e6c23a193f2a7a7a8fb90fe19d9ac9f140349e27

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C:\Users\Admin\AppData\Local\Temp\JHwoTEmafZJo1mP.exe
Filesize
71KB

MD5
7cc4f48b0c6cbb3b4f461f6bb16746f0

SHA1
bfc9ba75d919bfb13e07388a673de1bdfb9e539c

SHA256
2c376dfe778c24cad98581b42097de43ff6d03c526fb0162615e6915d9da3a99

SHA512
f9dcf0ab7440dd6786b8a2529d9a723e6952667d6a2492d03342392fa41ab9c4f3a98e84867a51d71ddde4f6c12b3656b6b94a280649754bc1e8591d64f9c0e0

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C:\Windows\CTS.exe
Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit