6e9c5b200da44c4c789d1ae2cae43b9a1ff1da6559f1fd94ebd955450c6f2645

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-04-2024 10:25

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General

Target

2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe
Size

73KB
MD5

46f482774fc9c8b987b0de2e2f0b0bc5
SHA1

ef0af2606a99fdb810430c61195d0a2f4e174a7e
SHA256

6e9c5b200da44c4c789d1ae2cae43b9a1ff1da6559f1fd94ebd955450c6f2645
SHA512

9d57396987f7a1e75aafb0ad554772aee5d98a9a11dd08a59775bc334fb339e7f7a4d0c95a04fa55908f0b606da3a18acb4c481746887c9e8deb76d1ded4484b
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTkba:ZhpAyazIlyazTaa

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

CTS.exe

pid process

2136 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
2136	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_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:

2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1220 2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe
Token: SeDebugPrivilege 2136 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1220	2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe
Token: SeDebugPrivilege	2136	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe

description	pid	process	target process
PID 1220 wrote to memory of 2136	1220	2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe	CTS.exe
PID 1220 wrote to memory of 2136	1220	2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe	CTS.exe
PID 1220 wrote to memory of 2136	1220	2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe	CTS.exe
PID 1220 wrote to memory of 2136	1220	2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_46f482774fc9c8b987b0de2e2f0b0bc5_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1220
- 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:2136

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\kJCu9E3xGsDUPQ2.exe

Filesize
73KB

MD5
7bb10c2ef04cc6be5bb98914228086ae

SHA1
6bd7c86a83e42a5c8732a1581d028ba7215e822f

SHA256
8b880ef6aa31d794f4d9fd3653759e9d4ab09968a27103707b86026819487bd8

SHA512
39acadc4788ab246cc596923b72dc9a90a025ed1081c960fbc6cee3e2d03cb705c4e0af4086dfcbe166dfa088f94bd7b46e97b3cc07bdc960f1a263ff6f166c3

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit