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Analysis
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max time kernel
204s -
max time network
191s -
platform
windows10-2004_x64 -
resource
win10v2004-20230221-en -
resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system -
submitted
05/05/2023, 12:22
Static task
static1
Behavioral task
behavioral1
Sample
Halkbank_Ekstre_20191102_073809_405251-PDF.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
Halkbank_Ekstre_20191102_073809_405251-PDF.exe
Resource
win10v2004-20230221-en
General
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Target
Halkbank_Ekstre_20191102_073809_405251-PDF.exe
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Size
273KB
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MD5
9326352797b86810855d22c81b5b6cd6
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SHA1
60a64fda0b9a1f68aeb5c481e54fc4cfaab1f99a
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SHA256
0113a0681674a5ce9fc9d80f924a196ffb7471f550fd79f2e49356b7e4e76cb5
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SHA512
7239b860606b499f0fa8c942f3f598f6429c469b9aed7896d4c60f318d57a452101ed23e2561aaa0331932c878756a438b3c5020f6fbba9afdccf368122fac27
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SSDEEP
6144:pYa6KyZJ06lDFyA08T+uhI2B2T6xoK+QUoc2a094ZQQ5U0yK:pY8y86lDcAV+l9OOFxSpK
Malware Config
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Loads dropped DLL 1 IoCs
pid Process 460 Halkbank_Ekstre_20191102_073809_405251-PDF.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Halkbank_Ekstre_20191102_073809_405251-PDF.exe Key opened \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Halkbank_Ekstre_20191102_073809_405251-PDF.exe Key opened \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Halkbank_Ekstre_20191102_073809_405251-PDF.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 34 api.ipify.org 35 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 460 set thread context of 2252 460 Halkbank_Ekstre_20191102_073809_405251-PDF.exe 81 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 460 Halkbank_Ekstre_20191102_073809_405251-PDF.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2252 Halkbank_Ekstre_20191102_073809_405251-PDF.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2252 Halkbank_Ekstre_20191102_073809_405251-PDF.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 460 wrote to memory of 2252 460 Halkbank_Ekstre_20191102_073809_405251-PDF.exe 81 PID 460 wrote to memory of 2252 460 Halkbank_Ekstre_20191102_073809_405251-PDF.exe 81 PID 460 wrote to memory of 2252 460 Halkbank_Ekstre_20191102_073809_405251-PDF.exe 81 PID 460 wrote to memory of 2252 460 Halkbank_Ekstre_20191102_073809_405251-PDF.exe 81 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Halkbank_Ekstre_20191102_073809_405251-PDF.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Halkbank_Ekstre_20191102_073809_405251-PDF.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20191102_073809_405251-PDF.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20191102_073809_405251-PDF.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:460 -
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20191102_073809_405251-PDF.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20191102_073809_405251-PDF.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:2252
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
13KB
MD58663749ad4e9d1cfcd808c77fa799a05
SHA167c9733b24633317783c44b715205ef5f0755eaa
SHA25616d4581a7c084bf4ff8856527173c82447c7032a793f695f3751231b34a9c3d2
SHA512c12938111eae6a24b5d0546e4282f46c7a3dcda326769c5406df433b4b4054610dfefe0aa435441d7c1b13119380361b5b585af3c1ad211929f804a4b57565e4