Analysis
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max time kernel
150s -
max time network
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platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
05-05-2023 20:49
Static task
static1
Behavioral task
behavioral1
Sample
microsoft10converters.exe
Resource
win7-20230220-en
General
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Target
microsoft10converters.exe
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Size
658KB
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MD5
5e9a63f5b3d8f53478a2889c0eefd510
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SHA1
d6d545146b969ac2ea389a1f11ffcda377549da2
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SHA256
4c312e3cce557ee17db0299bcc112699e616fb162afdadf12a41815a4a314b5c
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SHA512
2ee785eafa4ff4e738f13c26659b479ef84d52977e0c6d054c4b38f228959a0909b8652923b821d557bef7ae3e5f129e6b2c5039b83bb1a71ef464d6e5ef5e87
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SSDEEP
12288:gXQnnE6+s3WsZ/lkwR939lgKFWRg1xY0VcRuaHuatAUz3huJ7XrjaJ+:gXQnnYsNHXR9NlgobVcUK7UXrj++
Malware Config
Signatures
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NirSoft MailPassView 9 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral1/memory/1136-58-0x0000000000400000-0x0000000000484000-memory.dmp MailPassView behavioral1/memory/1136-61-0x0000000000400000-0x0000000000484000-memory.dmp MailPassView behavioral1/memory/1136-59-0x0000000000400000-0x0000000000484000-memory.dmp MailPassView behavioral1/memory/1136-63-0x0000000000400000-0x0000000000484000-memory.dmp MailPassView behavioral1/memory/1136-65-0x0000000000400000-0x0000000000484000-memory.dmp MailPassView behavioral1/memory/1204-89-0x0000000000270000-0x00000000002B0000-memory.dmp MailPassView behavioral1/memory/1080-97-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1080-98-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral1/memory/1080-100-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 9 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral1/memory/1136-58-0x0000000000400000-0x0000000000484000-memory.dmp WebBrowserPassView behavioral1/memory/1136-61-0x0000000000400000-0x0000000000484000-memory.dmp WebBrowserPassView behavioral1/memory/1136-59-0x0000000000400000-0x0000000000484000-memory.dmp WebBrowserPassView behavioral1/memory/1136-63-0x0000000000400000-0x0000000000484000-memory.dmp WebBrowserPassView behavioral1/memory/1136-65-0x0000000000400000-0x0000000000484000-memory.dmp WebBrowserPassView behavioral1/memory/1204-89-0x0000000000270000-0x00000000002B0000-memory.dmp WebBrowserPassView behavioral1/memory/996-107-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/996-109-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral1/memory/996-113-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 12 IoCs
Processes:
resource yara_rule behavioral1/memory/1136-58-0x0000000000400000-0x0000000000484000-memory.dmp Nirsoft behavioral1/memory/1136-61-0x0000000000400000-0x0000000000484000-memory.dmp Nirsoft behavioral1/memory/1136-59-0x0000000000400000-0x0000000000484000-memory.dmp Nirsoft behavioral1/memory/1136-63-0x0000000000400000-0x0000000000484000-memory.dmp Nirsoft behavioral1/memory/1136-65-0x0000000000400000-0x0000000000484000-memory.dmp Nirsoft behavioral1/memory/1204-89-0x0000000000270000-0x00000000002B0000-memory.dmp Nirsoft behavioral1/memory/1080-97-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1080-98-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/1080-100-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral1/memory/996-107-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/996-109-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral1/memory/996-113-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Deletes itself 1 IoCs
Processes:
Windows Update.exepid process 396 Windows Update.exe -
Executes dropped EXE 2 IoCs
Processes:
Windows Update.exeWindows Update.exepid process 1204 Windows Update.exe 396 Windows Update.exe -
Loads dropped DLL 2 IoCs
Processes:
microsoft10converters.exeWindows Update.exepid process 1136 microsoft10converters.exe 1204 Windows Update.exe -
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
Processes:
vbc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
Windows Update.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\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.
Processes:
flow ioc 6 whatismyipaddress.com 3 whatismyipaddress.com 5 whatismyipaddress.com -
Suspicious use of SetThreadContext 4 IoCs
Processes:
microsoft10converters.exeWindows Update.exeWindows Update.exedescription pid process target process PID 628 set thread context of 1136 628 microsoft10converters.exe microsoft10converters.exe PID 1204 set thread context of 396 1204 Windows Update.exe Windows Update.exe PID 396 set thread context of 1080 396 Windows Update.exe vbc.exe PID 396 set thread context of 996 396 Windows Update.exe vbc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
microsoft10converters.exeWindows Update.exeWindows Update.exepid process 628 microsoft10converters.exe 628 microsoft10converters.exe 628 microsoft10converters.exe 1204 Windows Update.exe 1204 Windows Update.exe 628 microsoft10converters.exe 1204 Windows Update.exe 1204 Windows Update.exe 1204 Windows Update.exe 1204 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe 396 Windows Update.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
microsoft10converters.exeWindows Update.exeWindows Update.exedescription pid process Token: SeDebugPrivilege 628 microsoft10converters.exe Token: SeDebugPrivilege 1204 Windows Update.exe Token: SeDebugPrivilege 396 Windows Update.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Windows Update.exepid process 396 Windows Update.exe -
Suspicious use of WriteProcessMemory 56 IoCs
Processes:
microsoft10converters.exemicrosoft10converters.exeWindows Update.exeWindows Update.exedescription pid process target process PID 628 wrote to memory of 1372 628 microsoft10converters.exe cmd.exe PID 628 wrote to memory of 1372 628 microsoft10converters.exe cmd.exe PID 628 wrote to memory of 1372 628 microsoft10converters.exe cmd.exe PID 628 wrote to memory of 1372 628 microsoft10converters.exe cmd.exe PID 628 wrote to memory of 1136 628 microsoft10converters.exe microsoft10converters.exe PID 628 wrote to memory of 1136 628 microsoft10converters.exe microsoft10converters.exe PID 628 wrote to memory of 1136 628 microsoft10converters.exe microsoft10converters.exe PID 628 wrote to memory of 1136 628 microsoft10converters.exe microsoft10converters.exe PID 628 wrote to memory of 1136 628 microsoft10converters.exe microsoft10converters.exe PID 628 wrote to memory of 1136 628 microsoft10converters.exe microsoft10converters.exe PID 628 wrote to memory of 1136 628 microsoft10converters.exe microsoft10converters.exe PID 628 wrote to memory of 1136 628 microsoft10converters.exe microsoft10converters.exe PID 628 wrote to memory of 1136 628 microsoft10converters.exe microsoft10converters.exe PID 1136 wrote to memory of 1204 1136 microsoft10converters.exe Windows Update.exe PID 1136 wrote to memory of 1204 1136 microsoft10converters.exe Windows Update.exe PID 1136 wrote to memory of 1204 1136 microsoft10converters.exe Windows Update.exe PID 1136 wrote to memory of 1204 1136 microsoft10converters.exe Windows Update.exe PID 1136 wrote to memory of 1204 1136 microsoft10converters.exe Windows Update.exe PID 1136 wrote to memory of 1204 1136 microsoft10converters.exe Windows Update.exe PID 1136 wrote to memory of 1204 1136 microsoft10converters.exe Windows Update.exe PID 1204 wrote to memory of 1892 1204 Windows Update.exe cmd.exe PID 1204 wrote to memory of 1892 1204 Windows Update.exe cmd.exe PID 1204 wrote to memory of 1892 1204 Windows Update.exe cmd.exe PID 1204 wrote to memory of 1892 1204 Windows Update.exe cmd.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 1204 wrote to memory of 396 1204 Windows Update.exe Windows Update.exe PID 396 wrote to memory of 1080 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 1080 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 1080 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 1080 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 1080 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 1080 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 1080 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 1080 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 1080 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 1080 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 996 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 996 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 996 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 996 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 996 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 996 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 996 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 996 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 996 396 Windows Update.exe vbc.exe PID 396 wrote to memory of 996 396 Windows Update.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\microsoft10converters.exe"C:\Users\Admin\AppData\Local\Temp\microsoft10converters.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:628 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe"2⤵PID:1372
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C:\Users\Admin\AppData\Local\Temp\microsoft10converters.exe"C:\Users\Admin\AppData\Local\Temp\microsoft10converters.exe"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1136 -
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 use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1204 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe"4⤵PID:1892
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C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"4⤵
- Deletes itself
- Executes dropped EXE
- 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:396 -
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⤵
- Accesses Microsoft Outlook accounts
PID:1080
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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:996
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
59B
MD59b294a29cba9a63552604ad89c4d9444
SHA18e5bb542f31fccad06e69502c7dba5a62e9b9cb9
SHA256a3f87150ecc0223f9099533d33c8839a435a2276bf243c7fbf0f063a182d31e1
SHA512c45e8ae93eb82aefa86f7e46cbf47dfed4738b88b94e37925bc716a9b304ac6827f55d007f676783df6fed3a84d552f00ddf2dd00cbffdc1348f215878030a51
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Filesize
2B
MD5f3b25701fe362ec84616a93a45ce9998
SHA1d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA51298c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
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Filesize
85KB
MD52e5f1cf69f92392f8829fc9c9263ae9b
SHA197b9ca766bbbdaa8c9ec960dc41b598f7fad82a5
SHA25651985a57e085d8b17042f0cdc1f905380b792854733eb3275fd8fce4e3bb886b
SHA512f7e096dd9d0fa3a3c04c01bf229c4b344798a4c8b7b848588c1d78cb9fadfa9b1d0fd53c1fe74d191d5561e9eb551a4a3fc918363f119ea60024dd3d67c83883
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Filesize
658KB
MD55e9a63f5b3d8f53478a2889c0eefd510
SHA1d6d545146b969ac2ea389a1f11ffcda377549da2
SHA2564c312e3cce557ee17db0299bcc112699e616fb162afdadf12a41815a4a314b5c
SHA5122ee785eafa4ff4e738f13c26659b479ef84d52977e0c6d054c4b38f228959a0909b8652923b821d557bef7ae3e5f129e6b2c5039b83bb1a71ef464d6e5ef5e87
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Filesize
658KB
MD55e9a63f5b3d8f53478a2889c0eefd510
SHA1d6d545146b969ac2ea389a1f11ffcda377549da2
SHA2564c312e3cce557ee17db0299bcc112699e616fb162afdadf12a41815a4a314b5c
SHA5122ee785eafa4ff4e738f13c26659b479ef84d52977e0c6d054c4b38f228959a0909b8652923b821d557bef7ae3e5f129e6b2c5039b83bb1a71ef464d6e5ef5e87
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Filesize
658KB
MD55e9a63f5b3d8f53478a2889c0eefd510
SHA1d6d545146b969ac2ea389a1f11ffcda377549da2
SHA2564c312e3cce557ee17db0299bcc112699e616fb162afdadf12a41815a4a314b5c
SHA5122ee785eafa4ff4e738f13c26659b479ef84d52977e0c6d054c4b38f228959a0909b8652923b821d557bef7ae3e5f129e6b2c5039b83bb1a71ef464d6e5ef5e87
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Filesize
658KB
MD55e9a63f5b3d8f53478a2889c0eefd510
SHA1d6d545146b969ac2ea389a1f11ffcda377549da2
SHA2564c312e3cce557ee17db0299bcc112699e616fb162afdadf12a41815a4a314b5c
SHA5122ee785eafa4ff4e738f13c26659b479ef84d52977e0c6d054c4b38f228959a0909b8652923b821d557bef7ae3e5f129e6b2c5039b83bb1a71ef464d6e5ef5e87
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Filesize
658KB
MD55e9a63f5b3d8f53478a2889c0eefd510
SHA1d6d545146b969ac2ea389a1f11ffcda377549da2
SHA2564c312e3cce557ee17db0299bcc112699e616fb162afdadf12a41815a4a314b5c
SHA5122ee785eafa4ff4e738f13c26659b479ef84d52977e0c6d054c4b38f228959a0909b8652923b821d557bef7ae3e5f129e6b2c5039b83bb1a71ef464d6e5ef5e87
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Filesize
658KB
MD55e9a63f5b3d8f53478a2889c0eefd510
SHA1d6d545146b969ac2ea389a1f11ffcda377549da2
SHA2564c312e3cce557ee17db0299bcc112699e616fb162afdadf12a41815a4a314b5c
SHA5122ee785eafa4ff4e738f13c26659b479ef84d52977e0c6d054c4b38f228959a0909b8652923b821d557bef7ae3e5f129e6b2c5039b83bb1a71ef464d6e5ef5e87