4a8f9e1304d29b292c4f2452719657c3defd180e577a82a678b8af8fb4ef4469

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/06/2024, 01:00

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General

Target

2024-06-09_85db4750154ce60d066f08e19c2e8321_bkransomware.exe
Size

71KB
MD5

85db4750154ce60d066f08e19c2e8321
SHA1

0d9c9c247cab86c7cbe4cc39698d67d62232fb23
SHA256

4a8f9e1304d29b292c4f2452719657c3defd180e577a82a678b8af8fb4ef4469
SHA512

7931d81afb180d3f61d4ba1264c19aca6fb51b416bcc812407bf950f521a7098399dc52dde5203dc85f44ee8ca40ad00a494270bff7c72c6b1d29e77ce63ba7a
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTj:ZRpAyazIliazTj

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2324	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"	2024-06-09_85db4750154ce60d066f08e19c2e8321_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	2024-06-09_85db4750154ce60d066f08e19c2e8321_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2168	2024-06-09_85db4750154ce60d066f08e19c2e8321_bkransomware.exe
Token: SeDebugPrivilege	2324	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 2324	2168	2024-06-09_85db4750154ce60d066f08e19c2e8321_bkransomware.exe	28
PID 2168 wrote to memory of 2324	2168	2024-06-09_85db4750154ce60d066f08e19c2e8321_bkransomware.exe	28
PID 2168 wrote to memory of 2324	2168	2024-06-09_85db4750154ce60d066f08e19c2e8321_bkransomware.exe	28
PID 2168 wrote to memory of 2324	2168	2024-06-09_85db4750154ce60d066f08e19c2e8321_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-09_85db4750154ce60d066f08e19c2e8321_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_85db4750154ce60d066f08e19c2e8321_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2168
- 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:2324

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\15F03dlV8dUwg6G.exe

Filesize
71KB

MD5
afbdcef9249a6c132507d535879a06c3

SHA1
b0478c723090d3d9f0653fedfd729a2b2a9edfe4

SHA256
9c6a2effdce59376dd2ce248ae6c508fd5d60641a5e38bd4cd25f88bdfd766e5

SHA512
846cc1913f80782ba6774126dc00c848927767a6bfff7fdb140db1071c60a6a8f480dee3fb9572c4a74cf39934e6aa183c8f9d7358b285a28dd74b496c85b489

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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