81dc7f5b11e5544f61e2d2b0177b337bc09447e01060ccf745362ebbc624ce58

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 15:48

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General

Target

2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe
Size

71KB
MD5

d34cb830e5d4ad38c26d9a69091a2ec1
SHA1

7c0374654a76f28e8d05b412495fb9a2c9ab8ade
SHA256

81dc7f5b11e5544f61e2d2b0177b337bc09447e01060ccf745362ebbc624ce58
SHA512

ab2ebf7b66ee7c6097922c25c332a3871a30031e46c03b259e6bb6d2fd18122902fcfad8952cad18c6b0a691e9cb65ae5c7887ad1edad2b1d7e5d3efa15a9ae6
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT/n:ZhpAyazIlyazT/n

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1280	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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_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

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2972	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe
Token: SeDebugPrivilege	1280	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2972 wrote to memory of 1280	2972	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe	28
PID 2972 wrote to memory of 1280	2972	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe	28
PID 2972 wrote to memory of 1280	2972	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe	28
PID 2972 wrote to memory of 1280	2972	2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_d34cb830e5d4ad38c26d9a69091a2ec1_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2972
- 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:1280

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\VXALkNJHiAs0tcv.exe

Filesize
71KB

MD5
b2a3d95104699c55fea5f903c4c4f8ca

SHA1
d8b89d81fc7494ffe087e40625c826e5f637f333

SHA256
4078fdcb943eeab807a107451a962ddaa0e50b2d0cc5f152d851acff1d09c2cc

SHA512
8cea0d46188e9d74b8cdf9723c73544ea29c02b477d7c1256f66fd81c02f65a2fe9435da9eaf0dc4447931f96911adcb358b235fbe3ffcc0ede62d802d107a3c

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C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads