Analysis
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max time kernel
146s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
03-10-2023 06:11
Static task
static1
Behavioral task
behavioral1
Sample
factura.PDF.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
factura.PDF.exe
Resource
win10v2004-20230915-en
General
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Target
factura.PDF.exe
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Size
571KB
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MD5
2f7967cefedc5eb6dca68286a466984c
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SHA1
27afb566469074ab421e10ba7b269202d78ce3a3
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SHA256
cb84aa32b87319aceaca7792a356f57030077830811a7fa0ea045a67afa62b5e
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SHA512
07b2c65e00ff8549d613e7723244e4e3a1e22b084bf0537d084bc2d82b886651de448f64a2b269b8bdd43fe7cd511e5c6dc9f34cebb5a63df93db133339f0ff6
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SSDEEP
12288:hLTiSAx5PWPQIOlAiayAlrjDBEm0tWSd+IglYI4j8a4:hv7Ax5uPDEsVjHEgqbj8b
Malware Config
Extracted
snakekeylogger
Protocol: smtp- Host:
mail.setimetrasa.com - Port:
587 - Username:
[email protected] - Password:
Seti2020 - Email To:
[email protected]
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/1156-12-0x0000000000400000-0x0000000000424000-memory.dmp family_snakekeylogger -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
factura.PDF.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation factura.PDF.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 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
Processes:
factura.PDF.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 factura.PDF.exe Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 factura.PDF.exe Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 factura.PDF.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.
Processes:
flow ioc 52 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
factura.PDF.exedescription pid process target process PID 908 set thread context of 1156 908 factura.PDF.exe factura.PDF.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
factura.PDF.exepowershell.exepid process 1156 factura.PDF.exe 772 powershell.exe 1156 factura.PDF.exe 772 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
factura.PDF.exepowershell.exedescription pid process Token: SeDebugPrivilege 1156 factura.PDF.exe Token: SeDebugPrivilege 772 powershell.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
factura.PDF.exedescription pid process target process PID 908 wrote to memory of 772 908 factura.PDF.exe powershell.exe PID 908 wrote to memory of 772 908 factura.PDF.exe powershell.exe PID 908 wrote to memory of 772 908 factura.PDF.exe powershell.exe PID 908 wrote to memory of 1156 908 factura.PDF.exe factura.PDF.exe PID 908 wrote to memory of 1156 908 factura.PDF.exe factura.PDF.exe PID 908 wrote to memory of 1156 908 factura.PDF.exe factura.PDF.exe PID 908 wrote to memory of 1156 908 factura.PDF.exe factura.PDF.exe PID 908 wrote to memory of 1156 908 factura.PDF.exe factura.PDF.exe PID 908 wrote to memory of 1156 908 factura.PDF.exe factura.PDF.exe PID 908 wrote to memory of 1156 908 factura.PDF.exe factura.PDF.exe PID 908 wrote to memory of 1156 908 factura.PDF.exe factura.PDF.exe -
outlook_office_path 1 IoCs
Processes:
factura.PDF.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 factura.PDF.exe -
outlook_win_path 1 IoCs
Processes:
factura.PDF.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 factura.PDF.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\factura.PDF.exe"C:\Users\Admin\AppData\Local\Temp\factura.PDF.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:908 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\factura.PDF.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:772 -
C:\Users\Admin\AppData\Local\Temp\factura.PDF.exe"C:\Users\Admin\AppData\Local\Temp\factura.PDF.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1156
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82