a7e3ef078c75b98781e9d36fe3a5b1b9aa955ab6b67b49e2c79c54950e287d5e

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
27-05-2024 05:45

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General

Target

2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe
Size

71KB
MD5

f67871cc201c15922d45254a996a6883
SHA1

bf374a7280e2f8a2ad4403d657f03d3e19f10bba
SHA256

a7e3ef078c75b98781e9d36fe3a5b1b9aa955ab6b67b49e2c79c54950e287d5e
SHA512

8765719d106e8b01dc397fc0de7a090e1b06b72c447b3153e7f15d846de8b20278b48eb2c099e983ba400b64223d40a1d3c226891b9f3e053a9f191f454ed798
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTQ:ZRpAyazIliazTQ

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

3048 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

pid	process
3048	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-27_f67871cc201c15922d45254a996a6883_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

Processes:

2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 2984 2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe
Token: SeDebugPrivilege 3048 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	2984	2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe
Token: SeDebugPrivilege	3048	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe

description	pid	process	target process
PID 2984 wrote to memory of 3048	2984	2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe	CTS.exe
PID 2984 wrote to memory of 3048	2984	2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe	CTS.exe
PID 2984 wrote to memory of 3048	2984	2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe	CTS.exe
PID 2984 wrote to memory of 3048	2984	2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_f67871cc201c15922d45254a996a6883_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2984

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:3048

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\7ZVq8z5nS0wSFCq.exe

Filesize
71KB

MD5
6d26011a8eb84328a19d824be3d3c4c9

SHA1
82e925338b14a4375c54f97f8e43fe9d11dd2959

SHA256
464d0b1d5c0ccf0ac0f0d682bebc2f7590dbbd7fda0cf7a331cbeed5342377ce

SHA512
76bad260f6f189fa60c0fc2e74b03f621722712da13ad575ce3bb6262cf5c9da987f759a33e165e0f450422c6f8975dfef294133e311aafd504c7d9ac116aac6

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit