3cc717b344f1164fe5eaff17596dfd2ce49ba8ab50cf07bf068c5df52a1c8d0f

Analysis

max time kernel
80s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 04:25

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General

Target
2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe
Size 71KB
Sample240613-e11blsxfrq
SHA256 3cc717b344f1164fe5eaff17596dfd2ce49ba8ab50cf07bf068c5df52a1c8d0f
MD5 2bba3977125de893ab5fd1c7383e26d4
SHA1 b4d5e65e34bd85188d9456a89a5f04cbede42e6d
SHA512 a306d421137682cc04adea7a6ad12a635b5215e93251b02cbf27ccf0711d17e8daaa04cdbabcec9bd7c7e26a5687dfa48d8fab52239c0631741c58b44fa3474f
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT9:ZhpAyazIlyazT9
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3644	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"	2024-06-13_2bba3977125de893ab5fd1c7383e26d4_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	2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1316	2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe
Token: SeDebugPrivilege	3644	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1316 wrote to memory of 3644	1316	2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe	81
PID 1316 wrote to memory of 3644	1316	2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe	81
PID 1316 wrote to memory of 3644	1316	2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_2bba3977125de893ab5fd1c7383e26d4_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1316
- 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:3644

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

excel.exe_Rules.xml

Path C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Size 392KB
SHA256 99525f121c839957dd90a784d4f06773ccbe039291818531a6600f98e60f70c2
MD5 29359c8ae56c3c6a806788a2026ae4f1
SHA1 7afc7e7a4aabc5b67e0de88716975275a0a67232
SHA512 27b5521839842a5ef5385218eae25261a82efacd7e722246968a0d1b8d968826b6ff8598edd59680b9a58361788a21fd57a29ecd5944bcb64bbfedec592b8883
SSDEEP 6144:hZMazDz8rAI+lPHEVIYFaCS7oyN9UY4Twv/Z8NDKjMMc76PH:hS0DzuAbMaSO9UuHZCKI76/
MD5 SHA1 SHA512 SSDEEP

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8GS7lyMZ7TUWBJS.exe

Path C:\Users\Admin\AppData\Local\Temp\8GS7lyMZ7TUWBJS.exe
Size 71KB
SHA256 96eee9137db82f72e28b1b22314bd55217e8513bf0598f5c3122e0da022c5fcb
MD5 3c6e6d590822e761aa5b92807c636487
SHA1 1d371791bb2ec4f5166c1c9f487fa460b4ddac67
SHA512 789c3f28ead265090c21033d236ed4f1f3c59b4a5ecb56e43dcaaff95f769298315709c4aca9cbe712e29406e7fce8df9a62ebbc758508fffb9c7b0cb084da4f
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT1bX:ZhpAyazIlyazT1b
MD5 SHA1 SHA512 SSDEEP

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CTS.exe

Path C:\Windows\CTS.exe
Size 71KB
SHA256 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163
MD5 66df4ffab62e674af2e75b163563fc0b
SHA1 dec8a197312e41eeb3cfef01cb2a443f0205cd6e
SHA512 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25
SSDEEP 1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazT:ZhpAyazIlyazT
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads