Analysis
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max time kernel
147s -
max time network
171s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
14-07-2022 00:31
Static task
static1
Behavioral task
behavioral1
Sample
4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe
Resource
win10v2004-20220414-en
General
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Target
4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe
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Size
823KB
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MD5
e416f63a17df80abc116dfbdd1f30636
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SHA1
6df554a2a077fa6242bf8ffcce238b53e327ffce
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SHA256
4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf
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SHA512
fa2719ff085e5e08e6c488c8a63f2596925073b1243b40f48cd3e95748a8857cf2e177bdb16cd45f09dbfaa725b4f1cb4b42d55bc6e829f47399075a9d657957
Malware Config
Extracted
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
myrecords1248@
Signatures
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NirSoft MailPassView 5 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral2/memory/2520-135-0x0000000000400000-0x0000000000484000-memory.dmp MailPassView behavioral2/memory/2084-139-0x0000000000000000-mapping.dmp MailPassView behavioral2/memory/2084-140-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/2084-142-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/2084-143-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 5 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral2/memory/2520-135-0x0000000000400000-0x0000000000484000-memory.dmp WebBrowserPassView behavioral2/memory/3200-144-0x0000000000000000-mapping.dmp WebBrowserPassView behavioral2/memory/3200-145-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3200-147-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3200-149-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 9 IoCs
resource yara_rule behavioral2/memory/2520-135-0x0000000000400000-0x0000000000484000-memory.dmp Nirsoft behavioral2/memory/2084-139-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/2084-140-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/2084-142-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/2084-143-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/3200-144-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/3200-145-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3200-147-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3200-149-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
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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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\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-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" RegAsm.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 31 whatismyipaddress.com -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4952 set thread context of 2520 4952 4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe 81 PID 2520 set thread context of 2084 2520 RegAsm.exe 84 PID 2520 set thread context of 3200 2520 RegAsm.exe 85 -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2520 RegAsm.exe 3200 vbc.exe 3200 vbc.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4952 4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe Token: SeDebugPrivilege 2520 RegAsm.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2520 RegAsm.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4952 wrote to memory of 2520 4952 4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe 81 PID 4952 wrote to memory of 2520 4952 4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe 81 PID 4952 wrote to memory of 2520 4952 4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe 81 PID 4952 wrote to memory of 2520 4952 4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe 81 PID 4952 wrote to memory of 2520 4952 4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe 81 PID 4952 wrote to memory of 2520 4952 4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe 81 PID 4952 wrote to memory of 2520 4952 4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe 81 PID 4952 wrote to memory of 2520 4952 4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe 81 PID 2520 wrote to memory of 2084 2520 RegAsm.exe 84 PID 2520 wrote to memory of 2084 2520 RegAsm.exe 84 PID 2520 wrote to memory of 2084 2520 RegAsm.exe 84 PID 2520 wrote to memory of 2084 2520 RegAsm.exe 84 PID 2520 wrote to memory of 2084 2520 RegAsm.exe 84 PID 2520 wrote to memory of 2084 2520 RegAsm.exe 84 PID 2520 wrote to memory of 2084 2520 RegAsm.exe 84 PID 2520 wrote to memory of 2084 2520 RegAsm.exe 84 PID 2520 wrote to memory of 2084 2520 RegAsm.exe 84 PID 2520 wrote to memory of 3200 2520 RegAsm.exe 85 PID 2520 wrote to memory of 3200 2520 RegAsm.exe 85 PID 2520 wrote to memory of 3200 2520 RegAsm.exe 85 PID 2520 wrote to memory of 3200 2520 RegAsm.exe 85 PID 2520 wrote to memory of 3200 2520 RegAsm.exe 85 PID 2520 wrote to memory of 3200 2520 RegAsm.exe 85 PID 2520 wrote to memory of 3200 2520 RegAsm.exe 85 PID 2520 wrote to memory of 3200 2520 RegAsm.exe 85 PID 2520 wrote to memory of 3200 2520 RegAsm.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe"C:\Users\Admin\AppData\Local\Temp\4936277cbb366241a62317ebc2a94b8b98c6df1fe84916934adb771629bdcdaf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4952 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.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
PID:2520 -
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:2084
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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⤵
- Suspicious behavior: EnumeratesProcesses
PID:3200
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
3KB
MD5f94dc819ca773f1e3cb27abbc9e7fa27
SHA19a7700efadc5ea09ab288544ef1e3cd876255086
SHA256a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92
SHA51272a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196