Analysis
- max time kernel
78s - max time network
81s - platform
windows7_x64 - resource
win7v200722 - submitted
17/08/2020, 13:59
Static task
static1
Behavioral task
behavioral1
Sample
invoice.exe
Resource
win7v200722
0 signatures
0 seconds
General
- Target invoice.exe
- Size 722KB
- Sample200817-yllgwrbhyj
- SHA256 9cee28ff70f09aa9628d5f760a033e40e320d31d3cab3d79edd0d9d86575e1e2
- MD5 e2cc21200c21cd342b5635dd67d73fb8
- SHA1 fb6d3dadfa5810360d6d2bb1cf860b5b6e642b3c
- SHA512 c380114fc8a5a69dc176d1d69ccf20375aead1a364c319396097ba1c435f361f13adfc4bb83e825f63a0b027b7ac87221a2668b7217cade1070762b2278a3435
- MD5 SHA1 SHA512
Malware Config
Extracted
Credentials
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Protocol
smtp
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Host
mail.umalasresidence.com
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Port
587
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Username
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Password
uhr283purc
Signatures
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Uses the VBS compiler for execution 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.
flow ioc 5 whatismyipaddress.com 7 whatismyipaddress.com - Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1184 set thread context of 1844 1184 invoice.exe 28 PID 1844 set thread context of 664 1844 RegSvcs.exe 30 PID 1844 set thread context of 1020 1844 RegSvcs.exe 31 - Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1632 schtasks.exe - Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1184 invoice.exe 1184 invoice.exe 1844 RegSvcs.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1184 invoice.exe Token: SeDebugPrivilege 1844 RegSvcs.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1844 RegSvcs.exe - Suspicious use of WriteProcessMemory 36 IoCs
description pid Process procid_target PID 1184 wrote to memory of 1632 1184 invoice.exe 26 PID 1184 wrote to memory of 1632 1184 invoice.exe 26 PID 1184 wrote to memory of 1632 1184 invoice.exe 26 PID 1184 wrote to memory of 1632 1184 invoice.exe 26 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1184 wrote to memory of 1844 1184 invoice.exe 28 PID 1844 wrote to memory of 664 1844 RegSvcs.exe 30 PID 1844 wrote to memory of 664 1844 RegSvcs.exe 30 PID 1844 wrote to memory of 664 1844 RegSvcs.exe 30 PID 1844 wrote to memory of 664 1844 RegSvcs.exe 30 PID 1844 wrote to memory of 664 1844 RegSvcs.exe 30 PID 1844 wrote to memory of 664 1844 RegSvcs.exe 30 PID 1844 wrote to memory of 664 1844 RegSvcs.exe 30 PID 1844 wrote to memory of 664 1844 RegSvcs.exe 30 PID 1844 wrote to memory of 664 1844 RegSvcs.exe 30 PID 1844 wrote to memory of 664 1844 RegSvcs.exe 30 PID 1844 wrote to memory of 1020 1844 RegSvcs.exe 31 PID 1844 wrote to memory of 1020 1844 RegSvcs.exe 31 PID 1844 wrote to memory of 1020 1844 RegSvcs.exe 31 PID 1844 wrote to memory of 1020 1844 RegSvcs.exe 31 PID 1844 wrote to memory of 1020 1844 RegSvcs.exe 31 PID 1844 wrote to memory of 1020 1844 RegSvcs.exe 31 PID 1844 wrote to memory of 1020 1844 RegSvcs.exe 31 PID 1844 wrote to memory of 1020 1844 RegSvcs.exe 31 PID 1844 wrote to memory of 1020 1844 RegSvcs.exe 31 PID 1844 wrote to memory of 1020 1844 RegSvcs.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\invoice.exe"C:\Users\Admin\AppData\Local\Temp\invoice.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1184 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ETUekOi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF298.tmp"2⤵
- Creates scheduled task(s)
PID:1632
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1844 -
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⤵PID:664
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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:1020
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