Analysis
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max time kernel
128s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
30-11-2023 19:17
Static task
static1
Behavioral task
behavioral1
Sample
halkbank_Ekstre_2023029011_081940_689633.pdf.exe
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
halkbank_Ekstre_2023029011_081940_689633.pdf.exe
Resource
win10v2004-20231127-en
General
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Target
halkbank_Ekstre_2023029011_081940_689633.pdf.exe
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Size
580KB
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MD5
c3996670eb6356a971f1ae1614a71ee6
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SHA1
ef131d2dd9628335ca952fefad451a6ce9f7fa94
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SHA256
6ea20989d66aa35efba273fe6d634b8a7c269c7f03a8df6dcb9c5653dcbba810
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SHA512
bee62dd3706e3484e55b2b44e9a17474b345c5d391da51edd9789cb0a285b2fd81f0dedfae8e840943693db8b2fea0a36d5c7e1800de0af2439b290b86f711a3
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SSDEEP
12288:Vrl1E6jD/Glz9plmQS6HOmfKXS5Cl1b44wvopox:dl1tD/GlBplR7fF5CUe
Malware Config
Extracted
snakekeylogger
Protocol: smtp- Host:
mail.ozakaluminyum.com - Port:
587 - Username:
[email protected] - Password:
ETKghx*c3KoQ
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/3572-13-0x0000000000400000-0x0000000000424000-memory.dmp family_snakekeylogger behavioral2/memory/3572-21-0x0000000005950000-0x0000000005960000-memory.dmp family_snakekeylogger -
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:
halkbank_Ekstre_2023029011_081940_689633.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 halkbank_Ekstre_2023029011_081940_689633.pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 halkbank_Ekstre_2023029011_081940_689633.pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 halkbank_Ekstre_2023029011_081940_689633.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 32 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
halkbank_Ekstre_2023029011_081940_689633.pdf.exedescription pid process target process PID 3484 set thread context of 3572 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe halkbank_Ekstre_2023029011_081940_689633.pdf.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
Processes:
halkbank_Ekstre_2023029011_081940_689633.pdf.exehalkbank_Ekstre_2023029011_081940_689633.pdf.exepid process 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe 3572 halkbank_Ekstre_2023029011_081940_689633.pdf.exe 3572 halkbank_Ekstre_2023029011_081940_689633.pdf.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
halkbank_Ekstre_2023029011_081940_689633.pdf.exehalkbank_Ekstre_2023029011_081940_689633.pdf.exedescription pid process Token: SeDebugPrivilege 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe Token: SeDebugPrivilege 3572 halkbank_Ekstre_2023029011_081940_689633.pdf.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
halkbank_Ekstre_2023029011_081940_689633.pdf.exedescription pid process target process PID 3484 wrote to memory of 3572 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe halkbank_Ekstre_2023029011_081940_689633.pdf.exe PID 3484 wrote to memory of 3572 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe halkbank_Ekstre_2023029011_081940_689633.pdf.exe PID 3484 wrote to memory of 3572 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe halkbank_Ekstre_2023029011_081940_689633.pdf.exe PID 3484 wrote to memory of 3572 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe halkbank_Ekstre_2023029011_081940_689633.pdf.exe PID 3484 wrote to memory of 3572 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe halkbank_Ekstre_2023029011_081940_689633.pdf.exe PID 3484 wrote to memory of 3572 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe halkbank_Ekstre_2023029011_081940_689633.pdf.exe PID 3484 wrote to memory of 3572 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe halkbank_Ekstre_2023029011_081940_689633.pdf.exe PID 3484 wrote to memory of 3572 3484 halkbank_Ekstre_2023029011_081940_689633.pdf.exe halkbank_Ekstre_2023029011_081940_689633.pdf.exe -
outlook_office_path 1 IoCs
Processes:
halkbank_Ekstre_2023029011_081940_689633.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 halkbank_Ekstre_2023029011_081940_689633.pdf.exe -
outlook_win_path 1 IoCs
Processes:
halkbank_Ekstre_2023029011_081940_689633.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1067295379-1486014338-1703171060-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 halkbank_Ekstre_2023029011_081940_689633.pdf.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\halkbank_Ekstre_2023029011_081940_689633.pdf.exe"C:\Users\Admin\AppData\Local\Temp\halkbank_Ekstre_2023029011_081940_689633.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3484 -
C:\Users\Admin\AppData\Local\Temp\halkbank_Ekstre_2023029011_081940_689633.pdf.exe"C:\Users\Admin\AppData\Local\Temp\halkbank_Ekstre_2023029011_081940_689633.pdf.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3572