Analysis
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max time kernel
120s -
max time network
140s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
11-10-2023 06:03
Static task
static1
Behavioral task
behavioral1
Sample
VAKIFBAN.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
VAKIFBAN.exe
Resource
win10v2004-20230915-en
General
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Target
VAKIFBAN.exe
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Size
896KB
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MD5
e478fc4b0c1091347240550446e2f7a2
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SHA1
2c46e2b777dc7a29c17deaee98534069efa91586
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SHA256
6e9331ce6b0ef84031079cf0d10d4f09e389b29c970cbe9f6f1d683eafa9aa52
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SHA512
6476b53eeabeea7b97e0af0e41454ff713ba5c625ca2b8a4d211c9fb32ecca847ac85a39b28a0f5ac1a37628708df22da5aea99853b289c1bb911acc435345e3
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SSDEEP
12288:GmVjOxbWKVGu27Wm4XfbzsqPhxRAUwQ7xjAkZNPrApR60mR4IQfei08hTrC+iQas:GmVja2iPhhXZq60zD1himaDQ
Malware Config
Extracted
snakekeylogger
Protocol: smtp- Host:
mail.gkas.com.tr - Port:
587 - Username:
[email protected] - Password:
Gkasteknik@2022
Signatures
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 4 IoCs
Processes:
resource yara_rule behavioral1/memory/2976-28-0x0000000000400000-0x0000000000424000-memory.dmp family_snakekeylogger behavioral1/memory/2976-31-0x0000000000400000-0x0000000000424000-memory.dmp family_snakekeylogger behavioral1/memory/2976-34-0x0000000000400000-0x0000000000424000-memory.dmp family_snakekeylogger behavioral1/memory/2976-36-0x00000000004D0000-0x0000000000510000-memory.dmp family_snakekeylogger -
Processes:
svchost.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe -
Processes:
svchost.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\svchost.exe = "0" svchost.exe -
Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs
Processes:
VAKIFBAN.exesvchost.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions VAKIFBAN.exe Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions svchost.exe -
Looks for VMWare Tools registry key 2 TTPs 2 IoCs
Processes:
VAKIFBAN.exesvchost.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools VAKIFBAN.exe Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools svchost.exe -
Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
VAKIFBAN.exesvchost.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion VAKIFBAN.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion VAKIFBAN.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
svchost.exepid process 2528 svchost.exe -
Loads dropped DLL 1 IoCs
Processes:
cmd.exepid process 3036 cmd.exe -
Processes:
svchost.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths svchost.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\svchost.exe = "0" svchost.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
CasPol.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CasPol.exe Key opened \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CasPol.exe Key opened \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CasPol.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
VAKIFBAN.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\"" VAKIFBAN.exe -
Processes:
svchost.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.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 4 checkip.dyndns.org -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
VAKIFBAN.exesvchost.exedescription ioc process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 VAKIFBAN.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum svchost.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum VAKIFBAN.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
svchost.exedescription pid process target process PID 2528 set thread context of 2976 2528 svchost.exe CasPol.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1300 timeout.exe -
Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
VAKIFBAN.exesvchost.exeCasPol.exepowershell.exepid process 2448 VAKIFBAN.exe 2448 VAKIFBAN.exe 2448 VAKIFBAN.exe 2528 svchost.exe 2528 svchost.exe 2528 svchost.exe 2528 svchost.exe 2528 svchost.exe 2528 svchost.exe 2528 svchost.exe 2528 svchost.exe 2976 CasPol.exe 2508 powershell.exe 2976 CasPol.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
VAKIFBAN.exesvchost.exeCasPol.exepowershell.exedescription pid process Token: SeDebugPrivilege 2448 VAKIFBAN.exe Token: SeDebugPrivilege 2528 svchost.exe Token: SeDebugPrivilege 2976 CasPol.exe Token: SeDebugPrivilege 2508 powershell.exe -
Suspicious use of WriteProcessMemory 49 IoCs
Processes:
VAKIFBAN.execmd.execmd.exesvchost.exedescription pid process target process PID 2448 wrote to memory of 2628 2448 VAKIFBAN.exe cmd.exe PID 2448 wrote to memory of 2628 2448 VAKIFBAN.exe cmd.exe PID 2448 wrote to memory of 2628 2448 VAKIFBAN.exe cmd.exe PID 2448 wrote to memory of 2628 2448 VAKIFBAN.exe cmd.exe PID 2448 wrote to memory of 3036 2448 VAKIFBAN.exe cmd.exe PID 2448 wrote to memory of 3036 2448 VAKIFBAN.exe cmd.exe PID 2448 wrote to memory of 3036 2448 VAKIFBAN.exe cmd.exe PID 2448 wrote to memory of 3036 2448 VAKIFBAN.exe cmd.exe PID 2628 wrote to memory of 2892 2628 cmd.exe schtasks.exe PID 2628 wrote to memory of 2892 2628 cmd.exe schtasks.exe PID 2628 wrote to memory of 2892 2628 cmd.exe schtasks.exe PID 2628 wrote to memory of 2892 2628 cmd.exe schtasks.exe PID 3036 wrote to memory of 1300 3036 cmd.exe timeout.exe PID 3036 wrote to memory of 1300 3036 cmd.exe timeout.exe PID 3036 wrote to memory of 1300 3036 cmd.exe timeout.exe PID 3036 wrote to memory of 1300 3036 cmd.exe timeout.exe PID 3036 wrote to memory of 2528 3036 cmd.exe svchost.exe PID 3036 wrote to memory of 2528 3036 cmd.exe svchost.exe PID 3036 wrote to memory of 2528 3036 cmd.exe svchost.exe PID 3036 wrote to memory of 2528 3036 cmd.exe svchost.exe PID 2528 wrote to memory of 2508 2528 svchost.exe powershell.exe PID 2528 wrote to memory of 2508 2528 svchost.exe powershell.exe PID 2528 wrote to memory of 2508 2528 svchost.exe powershell.exe PID 2528 wrote to memory of 2508 2528 svchost.exe powershell.exe PID 2528 wrote to memory of 2704 2528 svchost.exe csc.exe PID 2528 wrote to memory of 2704 2528 svchost.exe csc.exe PID 2528 wrote to memory of 2704 2528 svchost.exe csc.exe PID 2528 wrote to memory of 2704 2528 svchost.exe csc.exe PID 2528 wrote to memory of 2944 2528 svchost.exe dfsvc.exe PID 2528 wrote to memory of 2944 2528 svchost.exe dfsvc.exe PID 2528 wrote to memory of 2944 2528 svchost.exe dfsvc.exe PID 2528 wrote to memory of 2944 2528 svchost.exe dfsvc.exe PID 2528 wrote to memory of 3020 2528 svchost.exe ComSvcConfig.exe PID 2528 wrote to memory of 3020 2528 svchost.exe ComSvcConfig.exe PID 2528 wrote to memory of 3020 2528 svchost.exe ComSvcConfig.exe PID 2528 wrote to memory of 3020 2528 svchost.exe ComSvcConfig.exe PID 2528 wrote to memory of 2952 2528 svchost.exe ilasm.exe PID 2528 wrote to memory of 2952 2528 svchost.exe ilasm.exe PID 2528 wrote to memory of 2952 2528 svchost.exe ilasm.exe PID 2528 wrote to memory of 2952 2528 svchost.exe ilasm.exe PID 2528 wrote to memory of 2976 2528 svchost.exe CasPol.exe PID 2528 wrote to memory of 2976 2528 svchost.exe CasPol.exe PID 2528 wrote to memory of 2976 2528 svchost.exe CasPol.exe PID 2528 wrote to memory of 2976 2528 svchost.exe CasPol.exe PID 2528 wrote to memory of 2976 2528 svchost.exe CasPol.exe PID 2528 wrote to memory of 2976 2528 svchost.exe CasPol.exe PID 2528 wrote to memory of 2976 2528 svchost.exe CasPol.exe PID 2528 wrote to memory of 2976 2528 svchost.exe CasPol.exe PID 2528 wrote to memory of 2976 2528 svchost.exe CasPol.exe -
System policy modification 1 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe -
outlook_office_path 1 IoCs
Processes:
CasPol.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CasPol.exe -
outlook_win_path 1 IoCs
Processes:
CasPol.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 CasPol.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\VAKIFBAN.exe"C:\Users\Admin\AppData\Local\Temp\VAKIFBAN.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2448 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
PID:2628 -
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'3⤵
- Creates scheduled task(s)
PID:2892 -
C:\Windows\SysWOW64\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp4338.tmp.bat""2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3036 -
C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:1300 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"3⤵
- UAC bypass
- Windows security bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Executes dropped EXE
- Windows security modification
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2528 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\svchost.exe" -Force4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2508 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"4⤵PID:2704
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\dfsvc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\dfsvc.exe"4⤵PID:2944
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\ComSvcConfig.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\ComSvcConfig.exe"4⤵PID:3020
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"4⤵PID:2952
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"4⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2976
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
3Disable or Modify Tools
3Modify Registry
5Virtualization/Sandbox Evasion
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
151B
MD5098cb0ff3fcbd8fa24a884db49e26215
SHA14ac0fde7ba6183524a5dd54782bc8d77a862e7e3
SHA256abdac6b28d8c15fca1661c5f637e7fd803bab8f9da1a5308ef7a2da995fea146
SHA5124220dc77ff2063c7ca2a4e0666f8f2504c32de6653ca8e2f715440e06d2771c3fc7666e4b60feed3c202959f9c0a4d17ac78e650e4f95365adc295e2beb52392
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Filesize
151B
MD5098cb0ff3fcbd8fa24a884db49e26215
SHA14ac0fde7ba6183524a5dd54782bc8d77a862e7e3
SHA256abdac6b28d8c15fca1661c5f637e7fd803bab8f9da1a5308ef7a2da995fea146
SHA5124220dc77ff2063c7ca2a4e0666f8f2504c32de6653ca8e2f715440e06d2771c3fc7666e4b60feed3c202959f9c0a4d17ac78e650e4f95365adc295e2beb52392
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Filesize
896KB
MD5e478fc4b0c1091347240550446e2f7a2
SHA12c46e2b777dc7a29c17deaee98534069efa91586
SHA2566e9331ce6b0ef84031079cf0d10d4f09e389b29c970cbe9f6f1d683eafa9aa52
SHA5126476b53eeabeea7b97e0af0e41454ff713ba5c625ca2b8a4d211c9fb32ecca847ac85a39b28a0f5ac1a37628708df22da5aea99853b289c1bb911acc435345e3
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Filesize
896KB
MD5e478fc4b0c1091347240550446e2f7a2
SHA12c46e2b777dc7a29c17deaee98534069efa91586
SHA2566e9331ce6b0ef84031079cf0d10d4f09e389b29c970cbe9f6f1d683eafa9aa52
SHA5126476b53eeabeea7b97e0af0e41454ff713ba5c625ca2b8a4d211c9fb32ecca847ac85a39b28a0f5ac1a37628708df22da5aea99853b289c1bb911acc435345e3
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Filesize
896KB
MD5e478fc4b0c1091347240550446e2f7a2
SHA12c46e2b777dc7a29c17deaee98534069efa91586
SHA2566e9331ce6b0ef84031079cf0d10d4f09e389b29c970cbe9f6f1d683eafa9aa52
SHA5126476b53eeabeea7b97e0af0e41454ff713ba5c625ca2b8a4d211c9fb32ecca847ac85a39b28a0f5ac1a37628708df22da5aea99853b289c1bb911acc435345e3