Analysis
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max time kernel
126s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20250217-en -
resource tags
arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system -
submitted
28/02/2025, 07:36
Static task
static1
Behavioral task
behavioral1
Sample
URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe
Resource
win10v2004-20250217-en
General
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Target
URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe
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Size
2.8MB
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MD5
6c3f550d614e789df671f547b8bf60ca
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SHA1
cb70756917bcd865bbb441ab75c00a1e3dcf23c2
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SHA256
34c06c3e40d9b454a9b8cad1b0a52ad8f1974f63f4badb9613ea07ef426ca3b8
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SHA512
9d19f5e0ced8d783f5fa58f482ce643cfc32c15a6b9335e85799ca556be42a667d19bd7d337ffacffbe0ec3d55ba3ffee1c5b53a7769cdb0cee4025812adac9d
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SSDEEP
49152:0VgeOuaAtbjRnSEAdt8S9DLNIs5TvFekcnG/6L3GTrb7RZotJYG:0paUHRnSpt19PNIs5TNWHL3svXaJV
Malware Config
Extracted
vipkeylogger
Protocol: smtp- Host:
mail.iaa-airferight.com - Port:
25 - Username:
[email protected] - Password:
moneyismade22 - Email To:
[email protected]
Signatures
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Suspicious use of NtCreateUserProcessOtherParentProcess 2 IoCs
description pid Process procid_target PID 3172 created 3440 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 56 PID 4496 created 3440 4496 InstallUtil.exe 56 -
VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
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Vipkeylogger family
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Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Certificate.vbs URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe Key opened \REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe Key opened \REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 29 checkip.dyndns.org 34 reallyfreegeoip.org 35 reallyfreegeoip.org -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3172 set thread context of 4496 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 95 PID 4496 set thread context of 5136 4496 InstallUtil.exe 96 -
System Location Discovery: System Language Discovery 1 TTPs 3 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 InstallUtil.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language InstallUtil.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 4496 InstallUtil.exe 4496 InstallUtil.exe 4496 InstallUtil.exe 5136 InstallUtil.exe 5136 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe Token: SeDebugPrivilege 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe Token: SeDebugPrivilege 4496 InstallUtil.exe Token: SeDebugPrivilege 4496 InstallUtil.exe Token: SeDebugPrivilege 5136 InstallUtil.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 3172 wrote to memory of 4496 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 95 PID 3172 wrote to memory of 4496 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 95 PID 3172 wrote to memory of 4496 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 95 PID 3172 wrote to memory of 4496 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 95 PID 3172 wrote to memory of 4496 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 95 PID 3172 wrote to memory of 4496 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 95 PID 3172 wrote to memory of 4496 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 95 PID 3172 wrote to memory of 4496 3172 URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe 95 PID 4496 wrote to memory of 5136 4496 InstallUtil.exe 96 PID 4496 wrote to memory of 5136 4496 InstallUtil.exe 96 PID 4496 wrote to memory of 5136 4496 InstallUtil.exe 96 PID 4496 wrote to memory of 5136 4496 InstallUtil.exe 96 PID 4496 wrote to memory of 5136 4496 InstallUtil.exe 96 PID 4496 wrote to memory of 5136 4496 InstallUtil.exe 96 PID 4496 wrote to memory of 5136 4496 InstallUtil.exe 96 PID 4496 wrote to memory of 5136 4496 InstallUtil.exe 96 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 InstallUtil.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3440
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C:\Users\Admin\AppData\Local\Temp\URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe"C:\Users\Admin\AppData\Local\Temp\URGENT DHL - OVERDUE ACCOUNT LETTER- 1300711528.exe"2⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3172
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"2⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4496
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.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:5136
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