Analysis
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max time kernel
134s -
max time network
119s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
29/08/2024, 15:32
Static task
static1
Behavioral task
behavioral1
Sample
regasm.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
regasm.exe
Resource
win10v2004-20240802-en
General
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Target
regasm.exe
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Size
694KB
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MD5
62b9f8d4c98febbcd68e635c14d8d882
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SHA1
9689119fff4101543313c9fc73072cc3f7cb9736
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SHA256
e93063292dbb2c3209541ea13e57d0cca3225f35eb18977d2b3400a97255a49d
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SHA512
7eb0993733bd683b5b4ad128c1f7d746de4125da05d5e8bdbde1070705175ac12b431ab1924d08652462a3f4e5bf63bfb60717ac6b476186eff30e4aa9e2ee05
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SSDEEP
12288:btJJZsVISjztCzxhgAhxAFmu52iOYTH14FErBxLef:btJ3sVIUzkTgSqFF5bH
Malware Config
Extracted
vipkeylogger
Protocol: smtp- Host:
smtp.coxenregy.com - Port:
25 - Username:
[email protected] - Password:
XOGhx$W1 - Email To:
[email protected]
Signatures
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VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
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Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 regasm.exe Key opened \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 regasm.exe Key opened \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 regasm.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 25 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4516 set thread context of 4528 4516 regasm.exe 95 -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regasm.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regasm.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4516 regasm.exe 4516 regasm.exe 4516 regasm.exe 4516 regasm.exe 4528 regasm.exe 4528 regasm.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4516 regasm.exe Token: SeDebugPrivilege 4528 regasm.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 4516 wrote to memory of 4392 4516 regasm.exe 94 PID 4516 wrote to memory of 4392 4516 regasm.exe 94 PID 4516 wrote to memory of 4392 4516 regasm.exe 94 PID 4516 wrote to memory of 4528 4516 regasm.exe 95 PID 4516 wrote to memory of 4528 4516 regasm.exe 95 PID 4516 wrote to memory of 4528 4516 regasm.exe 95 PID 4516 wrote to memory of 4528 4516 regasm.exe 95 PID 4516 wrote to memory of 4528 4516 regasm.exe 95 PID 4516 wrote to memory of 4528 4516 regasm.exe 95 PID 4516 wrote to memory of 4528 4516 regasm.exe 95 PID 4516 wrote to memory of 4528 4516 regasm.exe 95 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 regasm.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 regasm.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\regasm.exe"C:\Users\Admin\AppData\Local\Temp\regasm.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4516 -
C:\Users\Admin\AppData\Local\Temp\regasm.exe"C:\Users\Admin\AppData\Local\Temp\regasm.exe"2⤵PID:4392
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C:\Users\Admin\AppData\Local\Temp\regasm.exe"C:\Users\Admin\AppData\Local\Temp\regasm.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4528
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3