Analysis
-
max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
29/08/2024, 14:55
Static task
static1
Behavioral task
behavioral1
Sample
GCBrnEGE22coKRz.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
GCBrnEGE22coKRz.exe
Resource
win10v2004-20240802-en
General
-
Target
GCBrnEGE22coKRz.exe
-
Size
822KB
-
MD5
5783a1fa182d62eb3838a2e3954a1f36
-
SHA1
eec476fcc102b50390cf983725dbffaee693200e
-
SHA256
a708a6cd710ba79a3dee7a91db6fedf3b3f6da1ab10d6391cc98962ee0904fd1
-
SHA512
31d8cd0fa9f08b7ada602fdd4877c246e892f1d18fdee0cc3e49ac7f293d3b41857009c3a3b97fa14737bdcfa786ed2cdb88b4d5e6383d5f83eda69e5bd4f7d8
-
SSDEEP
12288:XMf55k2851eTl3GpqJTWwK6WP/FlTW/Md3SlpAVF/8CxeYm8ba/DONRoT9H:Xy5xR5VKBXvTUOlNm8bkDD
Malware Config
Extracted
vipkeylogger
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
SU#BtOQl4 - Email To:
[email protected]
Signatures
-
VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
-
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
-
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 2704 powershell.exe 2824 powershell.exe -
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
-
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 GCBrnEGE22coKRz.exe Key opened \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 GCBrnEGE22coKRz.exe Key opened \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 GCBrnEGE22coKRz.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 4 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2772 set thread context of 264 2772 GCBrnEGE22coKRz.exe 36 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2636 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2824 powershell.exe 2704 powershell.exe 264 GCBrnEGE22coKRz.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2824 powershell.exe Token: SeDebugPrivilege 2704 powershell.exe Token: SeDebugPrivilege 264 GCBrnEGE22coKRz.exe -
Suspicious use of WriteProcessMemory 19 IoCs
description pid Process procid_target PID 2772 wrote to memory of 2704 2772 GCBrnEGE22coKRz.exe 30 PID 2772 wrote to memory of 2704 2772 GCBrnEGE22coKRz.exe 30 PID 2772 wrote to memory of 2704 2772 GCBrnEGE22coKRz.exe 30 PID 2772 wrote to memory of 2824 2772 GCBrnEGE22coKRz.exe 32 PID 2772 wrote to memory of 2824 2772 GCBrnEGE22coKRz.exe 32 PID 2772 wrote to memory of 2824 2772 GCBrnEGE22coKRz.exe 32 PID 2772 wrote to memory of 2636 2772 GCBrnEGE22coKRz.exe 34 PID 2772 wrote to memory of 2636 2772 GCBrnEGE22coKRz.exe 34 PID 2772 wrote to memory of 2636 2772 GCBrnEGE22coKRz.exe 34 PID 2772 wrote to memory of 264 2772 GCBrnEGE22coKRz.exe 36 PID 2772 wrote to memory of 264 2772 GCBrnEGE22coKRz.exe 36 PID 2772 wrote to memory of 264 2772 GCBrnEGE22coKRz.exe 36 PID 2772 wrote to memory of 264 2772 GCBrnEGE22coKRz.exe 36 PID 2772 wrote to memory of 264 2772 GCBrnEGE22coKRz.exe 36 PID 2772 wrote to memory of 264 2772 GCBrnEGE22coKRz.exe 36 PID 2772 wrote to memory of 264 2772 GCBrnEGE22coKRz.exe 36 PID 264 wrote to memory of 2896 264 GCBrnEGE22coKRz.exe 38 PID 264 wrote to memory of 2896 264 GCBrnEGE22coKRz.exe 38 PID 264 wrote to memory of 2896 264 GCBrnEGE22coKRz.exe 38 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
-
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 GCBrnEGE22coKRz.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 GCBrnEGE22coKRz.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\GCBrnEGE22coKRz.exe"C:\Users\Admin\AppData\Local\Temp\GCBrnEGE22coKRz.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2772 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\GCBrnEGE22coKRz.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2704
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xdOaJTzpabdo.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2824
-
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xdOaJTzpabdo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp845C.tmp"2⤵
- Scheduled Task/Job: Scheduled Task
PID:2636
-
-
C:\Users\Admin\AppData\Local\Temp\GCBrnEGE22coKRz.exeC:\Users\Admin\AppData\Local\Temp\GCBrnEGE22coKRz.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:264 -
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 264 -s 10523⤵PID:2896
-
-
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
1KB
MD5c78839c3ed540e1eaca717dfd9c367b1
SHA11692197a9893d6d076336547b5d8ef843a59deee
SHA25657fda9cfc03bfc276e7d08da01d4a4a67a1d2faf1e32be73a3499acb102e439b
SHA5124499dfa6d71452db02c12cc46f1fa91c5f2a4c076bff9a44b559163a77617d5843eeadafff52961318f1928dad0d332f0ae3d2c99dc0932b73b4fff957c8e083
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\A99JPS0WH8TPD6W9PJHV.temp
Filesize7KB
MD538d443d18ab948145907c60d94027feb
SHA1aa2818cda85da462c7ae3b03e1d60f371c26a150
SHA256704f0ed9865d5137a398708d1e052bf67736b7449636a1766579bea69f0cf3c0
SHA5124a51ac42cd2dd71f897590b46dbb030d85a6fc7f782cf42f5c5754fc3913acbe963256597a42451cefad539df37f67f0eb0e9490d3d7243590da45e39f29108b