1c76a78f6a3d3968afd7f46b74b95a9f877c43b1e07bc2592baf76fb599ad5a6

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 19:47

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General

Target

2024-05-31_2f4ba8a5361ebb9c98b3e6c8d0223645_bkransomware.exe
Size

73KB
MD5

2f4ba8a5361ebb9c98b3e6c8d0223645
SHA1

994f8ffb3ecab0882eae32df6561e9fff15acc56
SHA256

1c76a78f6a3d3968afd7f46b74b95a9f877c43b1e07bc2592baf76fb599ad5a6
SHA512

605558ae4ae3e01d5ea3638cc58bee3d0642d264e209537594c823322a814b95a9d4dc42722a0d67b957b1c55cbc7a778f3560afc4f50dae579041674ae81c3e
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazT/y5:ZRpAyazIliazTK5

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2240	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"	2024-05-31_2f4ba8a5361ebb9c98b3e6c8d0223645_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	CTS.exe
File created	C:\Windows\CTS.exe	2024-05-31_2f4ba8a5361ebb9c98b3e6c8d0223645_bkransomware.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2272	2024-05-31_2f4ba8a5361ebb9c98b3e6c8d0223645_bkransomware.exe
Token: SeDebugPrivilege	2240	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2272 wrote to memory of 2240	2272	2024-05-31_2f4ba8a5361ebb9c98b3e6c8d0223645_bkransomware.exe	28
PID 2272 wrote to memory of 2240	2272	2024-05-31_2f4ba8a5361ebb9c98b3e6c8d0223645_bkransomware.exe	28
PID 2272 wrote to memory of 2240	2272	2024-05-31_2f4ba8a5361ebb9c98b3e6c8d0223645_bkransomware.exe	28
PID 2272 wrote to memory of 2240	2272	2024-05-31_2f4ba8a5361ebb9c98b3e6c8d0223645_bkransomware.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_2f4ba8a5361ebb9c98b3e6c8d0223645_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_2f4ba8a5361ebb9c98b3e6c8d0223645_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2272
- 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:2240

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\jrqig3f4jdLuydg.exe

Filesize
73KB

MD5
e0a2d5ea2bee46d4b86d5b102aa94fdf

SHA1
45d989f822f9738d2763c1d1917c503e38729f2c

SHA256
81c4d770b2d6febe2f70cfcc6eba4e5723d566ca1ee18403d79d9f885f1ce450

SHA512
7ca73dc13f2deb8fc4cdc6707eeb815049712a993c45e179676ffb37e6f148a066ad25f5a37c91b84a4856c98c73e5eb31541ded69b915d876753f057f0e68a5

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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