Analysis
- max time kernel
78s - max time network
73s - platform
windows7_x64 - resource
win7v200722 - submitted
07/10/2020, 10:50
General
- Target Halkbank_Ekstre_20200916_175424_052121.exe
- Size 908KB
- Sample201007-zmvkyscff2
- SHA256 ce073fce9de335c288fe205d5bf7fbdd9fd3ecc718821116dbad098f176a69de
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.nartaccess.com
-
Port
587
-
Username
-
Password
T4R3PxJ68GnJ
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Deletes itself 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200916_175424_052121.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200916_175424_052121.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IsvCNh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2CCB.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200916_175424_052121.exe"{path}"2⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200916_175424_052121.exe'3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200916_175424_052121.exe'3⤵
- Deletes itself
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1060-25-0x0000000006090000-0x0000000006091000-memory.dmp
memory/1060-40-0x0000000006150000-0x0000000006151000-memory.dmp
memory/1060-59-0x0000000006310000-0x0000000006311000-memory.dmp
memory/1060-56-0x0000000006300000-0x0000000006301000-memory.dmp
memory/1060-18-0x0000000074230000-0x000000007491E000-memory.dmp
memory/1060-19-0x0000000000B40000-0x0000000000B41000-memory.dmp
memory/1060-20-0x0000000004850000-0x0000000004851000-memory.dmp
memory/1060-21-0x0000000001210000-0x0000000001211000-memory.dmp
memory/1060-22-0x0000000005280000-0x0000000005281000-memory.dmp
memory/1060-30-0x00000000060D0000-0x00000000060D1000-memory.dmp
memory/1060-31-0x00000000061C0000-0x00000000061C1000-memory.dmp
memory/1060-38-0x0000000006280000-0x0000000006281000-memory.dmp
memory/1264-0-0x0000000074230000-0x000000007491E000-memory.dmp
memory/1264-4-0x000000000A3B0000-0x000000000A460000-memory.dmp
memory/1264-3-0x00000000003A0000-0x00000000003A4000-memory.dmp
memory/1264-5-0x000000000BB40000-0x000000000BBF3000-memory.dmp
memory/1264-1-0x00000000012D0000-0x00000000012D1000-memory.dmp
memory/1992-12-0x0000000074230000-0x000000007491E000-memory.dmp
memory/1992-10-0x0000000000400000-0x0000000000486000-memory.dmp
memory/1992-8-0x0000000000400000-0x0000000000486000-memory.dmp
memory/1992-11-0x0000000000400000-0x0000000000486000-memory.dmp
memory/1992-17-0x0000000005DC0000-0x0000000005E4D000-memory.dmp
memory/1992-16-0x0000000000B70000-0x0000000000BA9000-memory.dmp
memory/2028-55-0x0000000074230000-0x000000007491E000-memory.dmp
memory/2028-71-0x00000000057F0000-0x00000000057F1000-memory.dmp
memory/2028-72-0x00000000062A0000-0x00000000062A1000-memory.dmp