Analysis
- max time kernel
99s - max time network
113s - platform
windows10_x64 - resource
win10 - 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
- Turns off Windows Defender SpyNet reporting 2 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 11 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 14 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Program crash 1 IoCs
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 35 IoCs
- Suspicious use of AdjustPrivilegeToken 9 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 26 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⤵
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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 3908 -s 22082⤵
- Program crash
- 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/512-125-0x0000000006970000-0x0000000006971000-memory.dmp
memory/512-124-0x0000000006280000-0x0000000006281000-memory.dmp
memory/512-103-0x0000000005210000-0x0000000005211000-memory.dmp
memory/512-22-0x0000000073400000-0x0000000073AEE000-memory.dmp
memory/512-20-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2460-27-0x00000000070E0000-0x00000000070E1000-memory.dmp
memory/2460-29-0x0000000006FC0000-0x0000000006FC1000-memory.dmp
memory/2460-13-0x0000000007160000-0x0000000007161000-memory.dmp
memory/2460-11-0x0000000001050000-0x0000000001051000-memory.dmp
memory/2460-55-0x0000000007F60000-0x0000000007F61000-memory.dmp
memory/2460-9-0x0000000073400000-0x0000000073AEE000-memory.dmp
memory/2460-50-0x0000000007D00000-0x0000000007D01000-memory.dmp
memory/2460-47-0x00000000070B0000-0x00000000070B1000-memory.dmp
memory/2460-26-0x0000000006E60000-0x0000000006E61000-memory.dmp
memory/2460-31-0x0000000007790000-0x0000000007791000-memory.dmp
memory/2692-12-0x0000000073400000-0x0000000073AEE000-memory.dmp
memory/3340-105-0x0000000009330000-0x0000000009331000-memory.dmp
memory/3340-19-0x0000000073400000-0x0000000073AEE000-memory.dmp
memory/3824-91-0x00000000097E0000-0x00000000097E1000-memory.dmp
memory/3824-111-0x0000000009940000-0x0000000009941000-memory.dmp
memory/3824-61-0x0000000009470000-0x00000000094A3000-memory.dmp
memory/3824-88-0x0000000009450000-0x0000000009451000-memory.dmp
memory/3824-99-0x00000000099B0000-0x00000000099B1000-memory.dmp
memory/3824-14-0x0000000073400000-0x0000000073AEE000-memory.dmp
memory/3908-5-0x00000000061B0000-0x00000000061B1000-memory.dmp
memory/3908-0-0x0000000073400000-0x0000000073AEE000-memory.dmp
memory/3908-4-0x0000000005C60000-0x0000000005CB0000-memory.dmp
memory/3908-2-0x0000000005180000-0x0000000005181000-memory.dmp
memory/3908-1-0x0000000000980000-0x0000000000981000-memory.dmp
memory/4184-43-0x00000000046C0000-0x00000000046C1000-memory.dmp
memory/4184-34-0x0000000004380000-0x0000000004381000-memory.dmp