Analysis
- max time kernel
138s - max time network
150s - platform
windows10_x64 - resource
win10v20201028 - submitted
25/12/2020, 08:51
Static task
static1
Behavioral task
behavioral1
Sample
55eef1be7b19e0f52556a646368aefc2.exe
Resource
win7v20201028
0 signatures
0 seconds
General
- Target 55eef1be7b19e0f52556a646368aefc2.exe
- Size 5.3MB
- Sample201225-befylspmn6
- SHA256 23b038034753de2b160a1039ad4f724f0cb75d57d0f73af56d592850c82a20cb
- MD5 55eef1be7b19e0f52556a646368aefc2
- SHA1 ebe90b7d6f1758ec5ba37ac4790ea218b40acda6
- SHA512 5325ec5da0a5f48084aa91410cc9697604717beb8d45e0115538f7b2c82acd2c1b56d290f537bd7de8c2b69c818342522f7c34cf841efd75fead76febd04b5d2
- MD5 SHA1 SHA512
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
- Blocklisted process makes network request 5 IoCs
flow pid Process 27 3556 RUNDLL32.EXE 33 4400 WScript.exe 35 4400 WScript.exe 37 4400 WScript.exe 39 4400 WScript.exe - Executes dropped EXE 5 IoCs
pid Process 1724 4_ico.exe 1932 6_ico.exe 1872 vpn_ico.exe 1980 SmartClock.exe 188 qfhhkra.exe -
resource yara_rule behavioral2/files/0x000200000001566a-26.dat upx behavioral2/files/0x000200000001566a-25.dat upx - Checks BIOS information in registry 2 TTPs 8 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 4_ico.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion vpn_ico.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion vpn_ico.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion SmartClock.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion SmartClock.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 6_ico.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 6_ico.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 4_ico.exe - Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SmartClock.lnk 4_ico.exe - Identifies Wine through registry keys 2 TTPs 4 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Wine vpn_ico.exe Key opened \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Wine SmartClock.exe Key opened \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Wine 4_ico.exe Key opened \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Wine 6_ico.exe - Loads dropped DLL 4 IoCs
pid Process 732 55eef1be7b19e0f52556a646368aefc2.exe 1160 rundll32.exe 3556 RUNDLL32.EXE 3556 RUNDLL32.EXE - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 8 ip-api.com - Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
pid Process 1932 6_ico.exe 1872 vpn_ico.exe 1724 4_ico.exe 1980 SmartClock.exe - Checks processor information in registry 2 TTPs 4 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 vpn_ico.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString vpn_ico.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 RUNDLL32.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString RUNDLL32.EXE - Delays execution with timeout.exe 2 IoCs
pid Process 2412 timeout.exe 1736 timeout.exe - Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings vpn_ico.exe -
description ioc Process Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 WScript.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 WScript.exe - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1980 SmartClock.exe - Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 1932 6_ico.exe 1932 6_ico.exe 1724 4_ico.exe 1724 4_ico.exe 1872 vpn_ico.exe 1872 vpn_ico.exe 1980 SmartClock.exe 1980 SmartClock.exe 4164 powershell.exe 4164 powershell.exe 4164 powershell.exe 3556 RUNDLL32.EXE 3556 RUNDLL32.EXE 4504 powershell.exe 4504 powershell.exe 4504 powershell.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1160 rundll32.exe Token: SeDebugPrivilege 3556 RUNDLL32.EXE Token: SeDebugPrivilege 4164 powershell.exe Token: SeDebugPrivilege 4504 powershell.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3556 RUNDLL32.EXE - Suspicious use of WriteProcessMemory 54 IoCs
description pid Process procid_target PID 732 wrote to memory of 1724 732 55eef1be7b19e0f52556a646368aefc2.exe 74 PID 732 wrote to memory of 1724 732 55eef1be7b19e0f52556a646368aefc2.exe 74 PID 732 wrote to memory of 1724 732 55eef1be7b19e0f52556a646368aefc2.exe 74 PID 732 wrote to memory of 1932 732 55eef1be7b19e0f52556a646368aefc2.exe 75 PID 732 wrote to memory of 1932 732 55eef1be7b19e0f52556a646368aefc2.exe 75 PID 732 wrote to memory of 1932 732 55eef1be7b19e0f52556a646368aefc2.exe 75 PID 732 wrote to memory of 1872 732 55eef1be7b19e0f52556a646368aefc2.exe 76 PID 732 wrote to memory of 1872 732 55eef1be7b19e0f52556a646368aefc2.exe 76 PID 732 wrote to memory of 1872 732 55eef1be7b19e0f52556a646368aefc2.exe 76 PID 1724 wrote to memory of 1980 1724 4_ico.exe 78 PID 1724 wrote to memory of 1980 1724 4_ico.exe 78 PID 1724 wrote to memory of 1980 1724 4_ico.exe 78 PID 1872 wrote to memory of 188 1872 vpn_ico.exe 79 PID 1872 wrote to memory of 188 1872 vpn_ico.exe 79 PID 1872 wrote to memory of 188 1872 vpn_ico.exe 79 PID 1872 wrote to memory of 3568 1872 vpn_ico.exe 80 PID 1872 wrote to memory of 3568 1872 vpn_ico.exe 80 PID 1872 wrote to memory of 3568 1872 vpn_ico.exe 80 PID 1932 wrote to memory of 1848 1932 6_ico.exe 81 PID 1932 wrote to memory of 1848 1932 6_ico.exe 81 PID 1932 wrote to memory of 1848 1932 6_ico.exe 81 PID 1848 wrote to memory of 2412 1848 cmd.exe 83 PID 1848 wrote to memory of 2412 1848 cmd.exe 83 PID 1848 wrote to memory of 2412 1848 cmd.exe 83 PID 1932 wrote to memory of 2188 1932 6_ico.exe 84 PID 1932 wrote to memory of 2188 1932 6_ico.exe 84 PID 1932 wrote to memory of 2188 1932 6_ico.exe 84 PID 2188 wrote to memory of 1736 2188 cmd.exe 86 PID 2188 wrote to memory of 1736 2188 cmd.exe 86 PID 2188 wrote to memory of 1736 2188 cmd.exe 86 PID 188 wrote to memory of 1160 188 qfhhkra.exe 90 PID 188 wrote to memory of 1160 188 qfhhkra.exe 90 PID 188 wrote to memory of 1160 188 qfhhkra.exe 90 PID 1160 wrote to memory of 3556 1160 rundll32.exe 91 PID 1160 wrote to memory of 3556 1160 rundll32.exe 91 PID 1160 wrote to memory of 3556 1160 rundll32.exe 91 PID 3556 wrote to memory of 4164 3556 RUNDLL32.EXE 94 PID 3556 wrote to memory of 4164 3556 RUNDLL32.EXE 94 PID 3556 wrote to memory of 4164 3556 RUNDLL32.EXE 94 PID 1872 wrote to memory of 4400 1872 vpn_ico.exe 96 PID 1872 wrote to memory of 4400 1872 vpn_ico.exe 96 PID 1872 wrote to memory of 4400 1872 vpn_ico.exe 96 PID 3556 wrote to memory of 4504 3556 RUNDLL32.EXE 97 PID 3556 wrote to memory of 4504 3556 RUNDLL32.EXE 97 PID 3556 wrote to memory of 4504 3556 RUNDLL32.EXE 97 PID 4504 wrote to memory of 4676 4504 powershell.exe 99 PID 4504 wrote to memory of 4676 4504 powershell.exe 99 PID 4504 wrote to memory of 4676 4504 powershell.exe 99 PID 3556 wrote to memory of 4712 3556 RUNDLL32.EXE 100 PID 3556 wrote to memory of 4712 3556 RUNDLL32.EXE 100 PID 3556 wrote to memory of 4712 3556 RUNDLL32.EXE 100 PID 3556 wrote to memory of 4760 3556 RUNDLL32.EXE 102 PID 3556 wrote to memory of 4760 3556 RUNDLL32.EXE 102 PID 3556 wrote to memory of 4760 3556 RUNDLL32.EXE 102
Processes
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C:\Users\Admin\AppData\Local\Temp\55eef1be7b19e0f52556a646368aefc2.exe"C:\Users\Admin\AppData\Local\Temp\55eef1be7b19e0f52556a646368aefc2.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:732 -
C:\Users\Admin\AppData\Local\Temp\New Feature\4_ico.exe"C:\Users\Admin\AppData\Local\Temp\New Feature\4_ico.exe"2⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Drops startup file
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1724 -
C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe"C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe"3⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
PID:1980
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C:\Users\Admin\AppData\Local\Temp\New Feature\6_ico.exe"C:\Users\Admin\AppData\Local\Temp\New Feature\6_ico.exe"2⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1932 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c rd /s /q C:\ProgramData\kepvgkko & timeout 2 & del /f /q "C:\Users\Admin\AppData\Local\Temp\New Feature\6_ico.exe"3⤵
- Suspicious use of WriteProcessMemory
PID:1848 -
C:\Windows\SysWOW64\timeout.exetimeout 24⤵
- Delays execution with timeout.exe
PID:2412
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c rd /s /q C:\ProgramData\kepvgkko & timeout 2 & del /f /q "C:\Users\Admin\AppData\Local\Temp\New Feature\6_ico.exe"3⤵
- Suspicious use of WriteProcessMemory
PID:2188 -
C:\Windows\SysWOW64\timeout.exetimeout 24⤵
- Delays execution with timeout.exe
PID:1736
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C:\Users\Admin\AppData\Local\Temp\New Feature\vpn_ico.exe"C:\Users\Admin\AppData\Local\Temp\New Feature\vpn_ico.exe"2⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1872 -
C:\Users\Admin\AppData\Local\Temp\qfhhkra.exe"C:\Users\Admin\AppData\Local\Temp\qfhhkra.exe"3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:188 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\QFHHKR~1.DLL,Z C:\Users\Admin\AppData\Local\Temp\qfhhkra.exe4⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1160 -
C:\Windows\SysWOW64\RUNDLL32.EXEC:\Windows\system32\RUNDLL32.EXE C:\Users\Admin\AppData\Local\Temp\QFHHKR~1.DLL,V0USTI1W5⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3556 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Executionpolicy bypass -File "C:\Users\Admin\AppData\Local\Temp\tmpA1C4.tmp.ps1"6⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4164
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Executionpolicy bypass -File "C:\Users\Admin\AppData\Local\Temp\tmpC51D.tmp.ps1"6⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4504 -
C:\Windows\SysWOW64\nslookup.exe"C:\Windows\system32\nslookup.exe" -type=any localhost7⤵PID:4676
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C:\Windows\SysWOW64\schtasks.exeschtasks /End /tn \Microsoft\Windows\Wininet\CacheTask6⤵PID:4712
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C:\Windows\SysWOW64\schtasks.exeschtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask6⤵PID:4760
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\adwdmtmped.vbs"3⤵PID:3568
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C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\gfgjnay.vbs"3⤵
- Blocklisted process makes network request
- Modifies system certificate store
PID:4400
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