Analysis
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max time kernel
140s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system -
submitted
29-09-2023 14:54
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 2 IoCs
Processes:
resource yara_rule behavioral2/memory/2944-20-0x0000000000400000-0x0000000000424000-memory.dmp family_snakekeylogger behavioral2/memory/4948-24-0x0000000004E20000-0x0000000004E30000-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:
svchost.exeVAKIFBAN.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion svchost.exe 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 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
VAKIFBAN.exesvchost.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Control Panel\International\Geo\Nation VAKIFBAN.exe Key value queried \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Control Panel\International\Geo\Nation svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
svchost.exepid process 2632 svchost.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:
jsc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 jsc.exe Key opened \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 jsc.exe Key opened \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 jsc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
VAKIFBAN.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\"" VAKIFBAN.exe -
Processes:
svchost.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 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 21 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 2632 set thread context of 2944 2632 svchost.exe jsc.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 220 timeout.exe -
Suspicious behavior: EnumeratesProcesses 27 IoCs
Processes:
VAKIFBAN.exejsc.exepowershell.exepid process 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2984 VAKIFBAN.exe 2944 jsc.exe 4948 powershell.exe 4948 powershell.exe 2944 jsc.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
VAKIFBAN.exesvchost.exejsc.exepowershell.exedescription pid process Token: SeDebugPrivilege 2984 VAKIFBAN.exe Token: SeDebugPrivilege 2632 svchost.exe Token: SeDebugPrivilege 2944 jsc.exe Token: SeDebugPrivilege 4948 powershell.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
VAKIFBAN.execmd.execmd.exesvchost.exedescription pid process target process PID 2984 wrote to memory of 1532 2984 VAKIFBAN.exe cmd.exe PID 2984 wrote to memory of 1532 2984 VAKIFBAN.exe cmd.exe PID 2984 wrote to memory of 1532 2984 VAKIFBAN.exe cmd.exe PID 2984 wrote to memory of 760 2984 VAKIFBAN.exe cmd.exe PID 2984 wrote to memory of 760 2984 VAKIFBAN.exe cmd.exe PID 2984 wrote to memory of 760 2984 VAKIFBAN.exe cmd.exe PID 1532 wrote to memory of 4400 1532 cmd.exe schtasks.exe PID 1532 wrote to memory of 4400 1532 cmd.exe schtasks.exe PID 1532 wrote to memory of 4400 1532 cmd.exe schtasks.exe PID 760 wrote to memory of 220 760 cmd.exe timeout.exe PID 760 wrote to memory of 220 760 cmd.exe timeout.exe PID 760 wrote to memory of 220 760 cmd.exe timeout.exe PID 760 wrote to memory of 2632 760 cmd.exe svchost.exe PID 760 wrote to memory of 2632 760 cmd.exe svchost.exe PID 760 wrote to memory of 2632 760 cmd.exe svchost.exe PID 2632 wrote to memory of 4948 2632 svchost.exe powershell.exe PID 2632 wrote to memory of 4948 2632 svchost.exe powershell.exe PID 2632 wrote to memory of 4948 2632 svchost.exe powershell.exe PID 2632 wrote to memory of 2944 2632 svchost.exe jsc.exe PID 2632 wrote to memory of 2944 2632 svchost.exe jsc.exe PID 2632 wrote to memory of 2944 2632 svchost.exe jsc.exe PID 2632 wrote to memory of 2944 2632 svchost.exe jsc.exe PID 2632 wrote to memory of 2944 2632 svchost.exe jsc.exe PID 2632 wrote to memory of 2944 2632 svchost.exe jsc.exe PID 2632 wrote to memory of 2944 2632 svchost.exe jsc.exe PID 2632 wrote to memory of 2944 2632 svchost.exe jsc.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:
jsc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 jsc.exe -
outlook_win_path 1 IoCs
Processes:
jsc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 jsc.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
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2984 -
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:1532 -
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:4400 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDF63.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
PID:760 -
C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:220 -
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
- Checks computer location settings
- Executes dropped EXE
- Windows security modification
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2632 -
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:4948 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"4⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2944
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
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
151B
MD582e9c354a63a54ce56366d4dedff56e3
SHA153149aaabbef11fe039f0873c38de4d622f01eba
SHA2567394859e0742abc6410faf52adece2946f489acc0ca5dc7a0df61b2c35159b97
SHA512602bfb6d7f06dd8c3788d1e501a363d5e629a91e2104afb315cc2f2c78e9790145dad22f40f10ab5c859ccbfbfed31f625739aedab7c6b5abcdf8a9f4163f5b0
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Filesize
896KB
MD5e478fc4b0c1091347240550446e2f7a2
SHA12c46e2b777dc7a29c17deaee98534069efa91586
SHA2566e9331ce6b0ef84031079cf0d10d4f09e389b29c970cbe9f6f1d683eafa9aa52
SHA5126476b53eeabeea7b97e0af0e41454ff713ba5c625ca2b8a4d211c9fb32ecca847ac85a39b28a0f5ac1a37628708df22da5aea99853b289c1bb911acc435345e3
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Filesize
896KB
MD5e478fc4b0c1091347240550446e2f7a2
SHA12c46e2b777dc7a29c17deaee98534069efa91586
SHA2566e9331ce6b0ef84031079cf0d10d4f09e389b29c970cbe9f6f1d683eafa9aa52
SHA5126476b53eeabeea7b97e0af0e41454ff713ba5c625ca2b8a4d211c9fb32ecca847ac85a39b28a0f5ac1a37628708df22da5aea99853b289c1bb911acc435345e3