Analysis
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max time kernel
150s -
max time network
142s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
11-12-2024 03:04
Static task
static1
Behavioral task
behavioral1
Sample
Confirm revised invoice to proceed with payment ASAP.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Confirm revised invoice to proceed with payment ASAP.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win7-20240708-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20241007-en
General
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Target
Confirm revised invoice to proceed with payment ASAP.exe
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Size
979KB
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MD5
b42344ed3b26fedfcafd2a8626557723
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SHA1
632b82c943b1c3b293a164df76eb7d94391ba0f7
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SHA256
2755e95a38fb5e5b3af3aea557601b9261004a3201219dfb704e28e60a06dfa3
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SHA512
ee22dfb0e084ac77050aee6fea65373f71c96f43e7da14655bfa6487bdf2332fc6aa9581927abc2880318513e695c48d355bd1499733dc3a6f850b63a2b8fc4e
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SSDEEP
24576:9jwKCNozIZAO5i1XamIP2J5k0++IHsoQastZ1Pkm:V1CiUb5kXN0Kk9+IHXzsnWm
Malware Config
Signatures
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Guloader family
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Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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Disables Task Manager via registry modification
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Loads dropped DLL 2 IoCs
pid Process 4564 Confirm revised invoice to proceed with payment ASAP.exe 4564 Confirm revised invoice to proceed with payment ASAP.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.
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Reads user/profile data of web browsers 3 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-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Confirm revised invoice to proceed with payment ASAP.exe Key opened \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Confirm revised invoice to proceed with payment ASAP.exe Key opened \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Confirm revised invoice to proceed with payment ASAP.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 21 drive.google.com 22 drive.google.com -
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 35 checkip.dyndns.org -
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
pid Process 1272 Confirm revised invoice to proceed with payment ASAP.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 4564 Confirm revised invoice to proceed with payment ASAP.exe 1272 Confirm revised invoice to proceed with payment ASAP.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4564 set thread context of 1272 4564 Confirm revised invoice to proceed with payment ASAP.exe 86 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 Confirm revised invoice to proceed with payment ASAP.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Confirm revised invoice to proceed with payment ASAP.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1272 Confirm revised invoice to proceed with payment ASAP.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 4564 Confirm revised invoice to proceed with payment ASAP.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1272 Confirm revised invoice to proceed with payment ASAP.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 4564 wrote to memory of 1272 4564 Confirm revised invoice to proceed with payment ASAP.exe 86 PID 4564 wrote to memory of 1272 4564 Confirm revised invoice to proceed with payment ASAP.exe 86 PID 4564 wrote to memory of 1272 4564 Confirm revised invoice to proceed with payment ASAP.exe 86 PID 4564 wrote to memory of 1272 4564 Confirm revised invoice to proceed with payment ASAP.exe 86 PID 4564 wrote to memory of 1272 4564 Confirm revised invoice to proceed with payment ASAP.exe 86 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Confirm revised invoice to proceed with payment ASAP.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Confirm revised invoice to proceed with payment ASAP.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Confirm revised invoice to proceed with payment ASAP.exe"C:\Users\Admin\AppData\Local\Temp\Confirm revised invoice to proceed with payment ASAP.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4564 -
C:\Users\Admin\AppData\Local\Temp\Confirm revised invoice to proceed with payment ASAP.exe"C:\Users\Admin\AppData\Local\Temp\Confirm revised invoice to proceed with payment ASAP.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1272
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
12KB
MD50d7ad4f45dc6f5aa87f606d0331c6901
SHA148df0911f0484cbe2a8cdd5362140b63c41ee457
SHA2563eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
SHA512c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9