Analysis
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max time kernel
139s -
max time network
135s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
22/02/2022, 21:46
Static task
static1
Behavioral task
behavioral1
Sample
091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe
Resource
win10v2004-en-20220112
General
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Target
091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe
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Size
520KB
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MD5
1a842c3d092c167328dfe60d09f21c31
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SHA1
ae439a9bc46d6beaeaa14119d4008430f8babd99
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SHA256
091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b
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SHA512
e882c7a3dd6a239b9cdd77bb8f64405bd3e5b4e13942470db414d46651c1a85213b16c01448ebffc4f8118cace4edc3ae5fdf421abcbbbb3e276e88e7122c9d3
Malware Config
Extracted
Protocol: smtp- Host:
mail.molinense.com - Port:
587 - Username:
[email protected] - Password:
jhl88899
Signatures
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NirSoft MailPassView 5 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral1/files/0x0008000000012254-58.dat MailPassView behavioral1/files/0x0008000000012254-59.dat MailPassView behavioral1/files/0x0008000000012254-60.dat MailPassView behavioral1/memory/832-67-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/832-69-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 5 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral1/files/0x0008000000012254-58.dat WebBrowserPassView behavioral1/files/0x0008000000012254-59.dat WebBrowserPassView behavioral1/files/0x0008000000012254-60.dat WebBrowserPassView behavioral1/memory/1724-70-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/1724-73-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 7 IoCs
resource yara_rule behavioral1/files/0x0008000000012254-58.dat Nirsoft behavioral1/files/0x0008000000012254-59.dat Nirsoft behavioral1/files/0x0008000000012254-60.dat Nirsoft behavioral1/memory/832-67-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/832-69-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1724-70-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/1724-73-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Executes dropped EXE 1 IoCs
pid Process 756 Windows Update.exe -
Deletes itself 1 IoCs
pid Process 756 Windows Update.exe -
Loads dropped DLL 1 IoCs
pid Process 1712 091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe -
Uses the VBS compiler for execution 1 TTPs
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" Windows Update.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 4 whatismyipaddress.com 6 whatismyipaddress.com 7 whatismyipaddress.com -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 756 set thread context of 832 756 Windows Update.exe 29 PID 756 set thread context of 1724 756 Windows Update.exe 30 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 756 Windows Update.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 756 Windows Update.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 756 Windows Update.exe -
Suspicious use of WriteProcessMemory 27 IoCs
description pid Process procid_target PID 1712 wrote to memory of 756 1712 091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe 27 PID 1712 wrote to memory of 756 1712 091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe 27 PID 1712 wrote to memory of 756 1712 091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe 27 PID 1712 wrote to memory of 756 1712 091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe 27 PID 1712 wrote to memory of 756 1712 091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe 27 PID 1712 wrote to memory of 756 1712 091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe 27 PID 1712 wrote to memory of 756 1712 091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe 27 PID 756 wrote to memory of 832 756 Windows Update.exe 29 PID 756 wrote to memory of 832 756 Windows Update.exe 29 PID 756 wrote to memory of 832 756 Windows Update.exe 29 PID 756 wrote to memory of 832 756 Windows Update.exe 29 PID 756 wrote to memory of 832 756 Windows Update.exe 29 PID 756 wrote to memory of 832 756 Windows Update.exe 29 PID 756 wrote to memory of 832 756 Windows Update.exe 29 PID 756 wrote to memory of 832 756 Windows Update.exe 29 PID 756 wrote to memory of 832 756 Windows Update.exe 29 PID 756 wrote to memory of 832 756 Windows Update.exe 29 PID 756 wrote to memory of 1724 756 Windows Update.exe 30 PID 756 wrote to memory of 1724 756 Windows Update.exe 30 PID 756 wrote to memory of 1724 756 Windows Update.exe 30 PID 756 wrote to memory of 1724 756 Windows Update.exe 30 PID 756 wrote to memory of 1724 756 Windows Update.exe 30 PID 756 wrote to memory of 1724 756 Windows Update.exe 30 PID 756 wrote to memory of 1724 756 Windows Update.exe 30 PID 756 wrote to memory of 1724 756 Windows Update.exe 30 PID 756 wrote to memory of 1724 756 Windows Update.exe 30 PID 756 wrote to memory of 1724 756 Windows Update.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe"C:\Users\Admin\AppData\Local\Temp\091709c91bf867d749c68e55757c65ddedd2677a6fc851f4257b0e3a35bbaf9b.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1712 -
C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"2⤵
- Executes dropped EXE
- Deletes itself
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:756 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"3⤵
- Accesses Microsoft Outlook accounts
PID:832
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"3⤵PID:1724
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