Analysis
- max time kernel
116s - max time network
113s - platform
windows7_x64 - resource
win7v200722 - submitted
07/10/2020, 10:38
General
- Target 40345c68c62dba56843c4650a408d2f7.exe
- Size 21KB
- Sample201007-wmtxccrrf6
- SHA256 cd34053691fae92e42fc3836d8d93844b8c6f43a0c0bf826a935efafea693e7e
Malware Config
Signatures
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- Modifies Windows Defender Real-time Protection settings 3 TTPs
- Windows security bypass 2 TTPs
- Drops startup file 2 IoCs
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Windows security modification 2 TTPs 9 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Program crash 1 IoCs
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 18 IoCs
- Suspicious use of AdjustPrivilegeToken 7 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 33 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\40345c68c62dba56843c4650a408d2f7.exe"C:\Users\Admin\AppData\Local\Temp\40345c68c62dba56843c4650a408d2f7.exe"1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Windows security modification
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 42⤵
- Delays execution with timeout.exe
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\40345c68c62dba56843c4650a408d2f7.exe" -Force2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\40345c68c62dba56843c4650a408d2f7.exe" -Force2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\40345c68c62dba56843c4650a408d2f7.exe" -Force2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\40345c68c62dba56843c4650a408d2f7.exe" -Force2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\40345c68c62dba56843c4650a408d2f7.exe"C:\Users\Admin\AppData\Local\Temp\40345c68c62dba56843c4650a408d2f7.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1088 -s 18442⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/904-10-0x0000000073DE0000-0x00000000744CE000-memory.dmp
memory/1088-0-0x0000000073DE0000-0x00000000744CE000-memory.dmp
memory/1088-3-0x0000000004B00000-0x0000000004B50000-memory.dmp
memory/1088-1-0x0000000000E10000-0x0000000000E11000-memory.dmp
memory/1668-27-0x0000000001DD0000-0x0000000001DE1000-memory.dmp
memory/1668-30-0x0000000002640000-0x0000000002651000-memory.dmp
memory/1848-61-0x00000000061F0000-0x00000000061F1000-memory.dmp
memory/1848-76-0x00000000062C0000-0x00000000062C1000-memory.dmp
memory/1848-47-0x0000000006100000-0x0000000006101000-memory.dmp
memory/1848-46-0x0000000005710000-0x0000000005711000-memory.dmp
memory/1848-41-0x0000000005650000-0x0000000005651000-memory.dmp
memory/1848-35-0x0000000002660000-0x0000000002661000-memory.dmp
memory/1848-31-0x0000000000CD0000-0x0000000000CD1000-memory.dmp
memory/1848-15-0x00000000005C0000-0x00000000005C1000-memory.dmp
memory/1848-11-0x0000000073DE0000-0x00000000744CE000-memory.dmp
memory/1848-77-0x00000000062D0000-0x00000000062D1000-memory.dmp
memory/1848-54-0x0000000006240000-0x0000000006241000-memory.dmp
memory/1884-14-0x0000000073DE0000-0x00000000744CE000-memory.dmp
memory/1936-12-0x0000000073DE0000-0x00000000744CE000-memory.dmp
memory/1936-24-0x0000000004720000-0x0000000004721000-memory.dmp
memory/2040-19-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2040-9-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2040-16-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2040-21-0x0000000073DE0000-0x00000000744CE000-memory.dmp