c7b8f3ec3c93e024caf57a48092501d6894c682d56bf1f59e4999013e0f30851

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 08:06

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General

Target

2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe
Size

71KB
MD5

3c63c8e5b02975df9a1232dfab34fbf3
SHA1

00edca3152b564b22142ae3e519d616515785a98
SHA256

c7b8f3ec3c93e024caf57a48092501d6894c682d56bf1f59e4999013e0f30851
SHA512

fdac20cdf9f59ac6a35ecf973310e52170cd0228f1bc47f2f0af518bf77220ac42bcf2b55a49d5101365eb506bbbf9b45d89ebbaa6ff2595f128c13ef6dd87d0
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT6:ZRpAyazIliazT6

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2812	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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3256	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe
Token: SeDebugPrivilege	2812	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3256 wrote to memory of 2812	3256	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe	83
PID 3256 wrote to memory of 2812	3256	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe	83
PID 3256 wrote to memory of 2812	3256	2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_3c63c8e5b02975df9a1232dfab34fbf3_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3256
- 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:2812

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\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
394KB

MD5
35f9ebdc677cf4cad0f04cdfed3fd424

SHA1
faf517b6364493fda7703fab0d7e5bc0c94ee9eb

SHA256
90e26214f43f56f06586f0f229ebb7d3b2dc5d901a63edcdbed4b36e7d2e0915

SHA512
8b9cdaf66e00880a2a6e70483ca4486fc6053f2ec1a75c51c67a526af2c69b13191b76d5d6e7ff2301b8ec1881b4452870f0231cad114eaf3c57a8c346747557

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C:\Users\Admin\AppData\Local\Temp\QoPXWqAMElj2abI.exe

Filesize
71KB

MD5
09a35f144ceae6d4e0c0abd448372287

SHA1
97f43ed5ea281b2888c4936a4d698cef21a8667c

SHA256
2c59e5c6954422089c220b5d044e429eed54e953e0b6478836219207dfa91c9f

SHA512
58025d8c578b0cc7cc2c86fda440228adbdb1fa9e97ad5f8653f9ed6fdd4cf6aabaaf9680609264715a71620c60152a3bd01a48223dbaf85feca4d15b2326c8b

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads