391c28e130bf175ce772c9e13f906b986d62d86873f208586297f02cc5292456

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
02-05-2024 03:55

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General

Target

2024-05-02_2e140f193e2d5aa2b54d4313b2f4bfc2_bkransomware.exe
Size

71KB
MD5

2e140f193e2d5aa2b54d4313b2f4bfc2
SHA1

739493dfe777a0592c258add21f576645df0d345
SHA256

391c28e130bf175ce772c9e13f906b986d62d86873f208586297f02cc5292456
SHA512

7cc850a20277fcab9677860d26125f9a576749e0b8f707d42b4c26d5dafcdb4ea188150bf22f2132a3d651f107b9b29e1e920ef15c4ab80062878657a8e97e07
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTg:ZRpAyazIliazTg

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2748	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"	2024-05-02_2e140f193e2d5aa2b54d4313b2f4bfc2_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	2024-05-02_2e140f193e2d5aa2b54d4313b2f4bfc2_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2348	2024-05-02_2e140f193e2d5aa2b54d4313b2f4bfc2_bkransomware.exe
Token: SeDebugPrivilege	2748	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2748	2348	2024-05-02_2e140f193e2d5aa2b54d4313b2f4bfc2_bkransomware.exe	29
PID 2348 wrote to memory of 2748	2348	2024-05-02_2e140f193e2d5aa2b54d4313b2f4bfc2_bkransomware.exe	29
PID 2348 wrote to memory of 2748	2348	2024-05-02_2e140f193e2d5aa2b54d4313b2f4bfc2_bkransomware.exe	29
PID 2348 wrote to memory of 2748	2348	2024-05-02_2e140f193e2d5aa2b54d4313b2f4bfc2_bkransomware.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-05-02_2e140f193e2d5aa2b54d4313b2f4bfc2_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_2e140f193e2d5aa2b54d4313b2f4bfc2_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2348
- 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:2748

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\Cd2Cy93kuWNU5Mq.exe

Filesize
71KB

MD5
5e80678e08f2fb9055cbd57f0429cf31

SHA1
a956a318426c5b9b25106d40a6be39534a9102dd

SHA256
dd9a9aadb595032e316e86e0c8db5a394c8984e6390024bebc3d909154a5cfaf

SHA512
78e4acf27c4a5f4df116b3288cf58caa0d9f97d1683594eb9a1c029bf20579b0d3417571cda1d5d072729902bb238b2eb62311527104027d2943cf101db72e7c

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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