Analysis
- max time kernel
151s - max time network
112s - platform
windows7_x64 - resource
win7v20201028 - submitted
09/11/2020, 20:57
Static task
static1
Behavioral task
behavioral1
Sample
order15062020944758666.exe
Resource
win7v20201028
0 signatures
0 seconds
General
- Target order15062020944758666.exe
- Size 930KB
- Sample201109-3ph6fjgcxa
- SHA256 5321f28c4dc096dbf5eda4f882cb97f22acd91fa73826ccaa64d4e9b66f12499
- MD5 af125a9d30de93e3208b8672187e9bc7
- SHA1 fe0b7a363b9fcaf8ba854114efc88caa142a6160
- SHA512 b465c550db6f8631cba73362ee78fd8c9052d0986842e7fed17309588362491c068e256d0f99fa3b228f4f12f96afe88462d1bcb3d1f4e848d78df4d3b8bbd67
- MD5 SHA1 SHA512
Malware Config
Extracted
Credentials
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Protocol
smtp
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Host
smtp.urban.co.th
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Port
587
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Username
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Password
Urban@1143
Signatures
- Executes dropped EXE 2 IoCs
pid Process 1980 Windows Update.exe 1708 Windows Update.exe -
resource yara_rule behavioral1/memory/1816-0-0x0000000000400000-0x000000000051D000-memory.dmp upx behavioral1/memory/1816-3-0x0000000000400000-0x000000000051D000-memory.dmp upx behavioral1/memory/1816-2-0x0000000000400000-0x000000000051D000-memory.dmp upx behavioral1/memory/1708-23-0x0000000000400000-0x000000000051D000-memory.dmp upx behavioral1/memory/1708-24-0x0000000000400000-0x000000000051D000-memory.dmp upx - Deletes itself 1 IoCs
pid Process 1708 Windows Update.exe - Loads dropped DLL 8 IoCs
pid Process 1816 order15062020944758666.exe 1980 Windows Update.exe 1980 Windows Update.exe 1980 Windows Update.exe 1980 Windows Update.exe 1708 Windows Update.exe 1708 Windows Update.exe 1708 Windows Update.exe - 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
- Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\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 7 whatismyipaddress.com 8 whatismyipaddress.com 5 whatismyipaddress.com - Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 1668 set thread context of 1816 1668 order15062020944758666.exe 26 PID 1980 set thread context of 1708 1980 Windows Update.exe 28 PID 1708 set thread context of 1500 1708 Windows Update.exe 33 PID 1708 set thread context of 1572 1708 Windows Update.exe 34 - Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1668 order15062020944758666.exe 1980 Windows Update.exe 1708 Windows Update.exe - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 1668 order15062020944758666.exe 1980 Windows Update.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1708 Windows Update.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1708 Windows Update.exe - Suspicious use of WriteProcessMemory 44 IoCs
description pid Process procid_target PID 1668 wrote to memory of 1816 1668 order15062020944758666.exe 26 PID 1668 wrote to memory of 1816 1668 order15062020944758666.exe 26 PID 1668 wrote to memory of 1816 1668 order15062020944758666.exe 26 PID 1668 wrote to memory of 1816 1668 order15062020944758666.exe 26 PID 1816 wrote to memory of 1980 1816 order15062020944758666.exe 27 PID 1816 wrote to memory of 1980 1816 order15062020944758666.exe 27 PID 1816 wrote to memory of 1980 1816 order15062020944758666.exe 27 PID 1816 wrote to memory of 1980 1816 order15062020944758666.exe 27 PID 1816 wrote to memory of 1980 1816 order15062020944758666.exe 27 PID 1816 wrote to memory of 1980 1816 order15062020944758666.exe 27 PID 1816 wrote to memory of 1980 1816 order15062020944758666.exe 27 PID 1980 wrote to memory of 1708 1980 Windows Update.exe 28 PID 1980 wrote to memory of 1708 1980 Windows Update.exe 28 PID 1980 wrote to memory of 1708 1980 Windows Update.exe 28 PID 1980 wrote to memory of 1708 1980 Windows Update.exe 28 PID 1980 wrote to memory of 1708 1980 Windows Update.exe 28 PID 1980 wrote to memory of 1708 1980 Windows Update.exe 28 PID 1980 wrote to memory of 1708 1980 Windows Update.exe 28 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1500 1708 Windows Update.exe 33 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34 PID 1708 wrote to memory of 1572 1708 Windows Update.exe 34
Processes
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C:\Users\Admin\AppData\Local\Temp\order15062020944758666.exe"C:\Users\Admin\AppData\Local\Temp\order15062020944758666.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1668 -
C:\Users\Admin\AppData\Local\Temp\order15062020944758666.exe"C:\Users\Admin\AppData\Local\Temp\order15062020944758666.exe"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1816 -
C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1980 -
C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"4⤵
- Executes dropped EXE
- Deletes itself
- Loads dropped DLL
- 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:1708 -
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"5⤵PID:1500
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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"5⤵PID:1572
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