Analysis
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max time kernel
148s -
max time network
111s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
17-11-2020 14:48
Static task
static1
Behavioral task
behavioral1
Sample
d8c4f0bb55040ead44e31a083886baa9.exe
Resource
win7v20201028
General
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Target
d8c4f0bb55040ead44e31a083886baa9.exe
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Size
1.1MB
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MD5
2a1c75e5e80e13efb9f8e98044bb44c8
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SHA1
7a4a2199dbfe00d57114e8378869277b3afa728d
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SHA256
ab3c113121c1fdfde39a4ce53d6f38490f6393d847d14e727aa5260594e88c79
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SHA512
bbb7ac2a84358cb155927922da87ce3f456afa783f049977c250b68342c17a1080bad9e4c1854af38b06f6da5e9548260cdc0390b84dbfc3a0f06cf7b63c38e6
Malware Config
Extracted
Protocol: smtp- Host:
smtp.casalsmd.com - Port:
587 - Username:
carolina@casalsmd.com - Password:
Carolina123
Signatures
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Processes:
resource yara_rule behavioral1/memory/1984-1-0x0000000000400000-0x000000000051D000-memory.dmp upx behavioral1/memory/1984-3-0x0000000000400000-0x000000000051D000-memory.dmp upx behavioral1/memory/1984-4-0x0000000000400000-0x000000000051D000-memory.dmp upx -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Uses the VBS compiler for execution 1 TTPs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
d8c4f0bb55040ead44e31a083886baa9.exedescription 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" d8c4f0bb55040ead44e31a083886baa9.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.
Processes:
flow ioc 5 whatismyipaddress.com 7 whatismyipaddress.com 8 whatismyipaddress.com -
Suspicious use of SetThreadContext 3 IoCs
Processes:
d8c4f0bb55040ead44e31a083886baa9.exed8c4f0bb55040ead44e31a083886baa9.exedescription pid process target process PID 372 set thread context of 1984 372 d8c4f0bb55040ead44e31a083886baa9.exe d8c4f0bb55040ead44e31a083886baa9.exe PID 1984 set thread context of 816 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 set thread context of 1188 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
d8c4f0bb55040ead44e31a083886baa9.exed8c4f0bb55040ead44e31a083886baa9.exepid process 372 d8c4f0bb55040ead44e31a083886baa9.exe 1984 d8c4f0bb55040ead44e31a083886baa9.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
d8c4f0bb55040ead44e31a083886baa9.exepid process 372 d8c4f0bb55040ead44e31a083886baa9.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
d8c4f0bb55040ead44e31a083886baa9.exedescription pid process Token: SeDebugPrivilege 1984 d8c4f0bb55040ead44e31a083886baa9.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
d8c4f0bb55040ead44e31a083886baa9.exepid process 1984 d8c4f0bb55040ead44e31a083886baa9.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
d8c4f0bb55040ead44e31a083886baa9.exed8c4f0bb55040ead44e31a083886baa9.exedescription pid process target process PID 372 wrote to memory of 1984 372 d8c4f0bb55040ead44e31a083886baa9.exe d8c4f0bb55040ead44e31a083886baa9.exe PID 372 wrote to memory of 1984 372 d8c4f0bb55040ead44e31a083886baa9.exe d8c4f0bb55040ead44e31a083886baa9.exe PID 372 wrote to memory of 1984 372 d8c4f0bb55040ead44e31a083886baa9.exe d8c4f0bb55040ead44e31a083886baa9.exe PID 372 wrote to memory of 1984 372 d8c4f0bb55040ead44e31a083886baa9.exe d8c4f0bb55040ead44e31a083886baa9.exe PID 1984 wrote to memory of 816 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 816 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 816 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 816 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 816 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 816 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 816 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 816 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 816 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 816 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 1188 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 1188 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 1188 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 1188 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 1188 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 1188 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 1188 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 1188 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 1188 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe PID 1984 wrote to memory of 1188 1984 d8c4f0bb55040ead44e31a083886baa9.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d8c4f0bb55040ead44e31a083886baa9.exe"C:\Users\Admin\AppData\Local\Temp\d8c4f0bb55040ead44e31a083886baa9.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\d8c4f0bb55040ead44e31a083886baa9.exe"C:\Users\Admin\AppData\Local\Temp\d8c4f0bb55040ead44e31a083886baa9.exe"2⤵
- 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
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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\holdermail.txt"3⤵
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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⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\holderwb.txtMD5
f3b25701fe362ec84616a93a45ce9998
SHA1d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA51298c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
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memory/268-15-0x000007FEF6350000-0x000007FEF65CA000-memory.dmpFilesize
2.5MB
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memory/372-0-0x0000000000400000-0x0000000000515000-memory.dmpFilesize
1.1MB
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memory/816-9-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/816-11-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/816-10-0x0000000000411654-mapping.dmp
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memory/1188-13-0x0000000000442628-mapping.dmp
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memory/1188-12-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/1188-14-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/1984-7-0x0000000000220000-0x00000000002A3000-memory.dmpFilesize
524KB
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memory/1984-6-0x00000000002E2000-0x00000000002E3000-memory.dmpFilesize
4KB
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memory/1984-5-0x00000000005B0000-0x0000000000638000-memory.dmpFilesize
544KB
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memory/1984-4-0x0000000000400000-0x000000000051D000-memory.dmpFilesize
1.1MB
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memory/1984-3-0x0000000000400000-0x000000000051D000-memory.dmpFilesize
1.1MB
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memory/1984-1-0x0000000000400000-0x000000000051D000-memory.dmpFilesize
1.1MB
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memory/1984-2-0x000000000051B4D0-mapping.dmp