Analysis
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max time kernel
150s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
04-05-2023 05:23
Static task
static1
Behavioral task
behavioral1
Sample
microsoft10converters.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
microsoft10converters.exe
Resource
win10v2004-20230220-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
Extracted
Protocol: smtp- Host:
mail.tcci.org.sa - Port:
587 - Username:
[email protected] - Password:
Brown3044
Signatures
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NirSoft MailPassView 4 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral2/memory/4512-137-0x0000000000400000-0x0000000000484000-memory.dmp MailPassView behavioral2/memory/1256-162-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/1256-164-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/1256-166-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 5 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral2/memory/4512-137-0x0000000000400000-0x0000000000484000-memory.dmp WebBrowserPassView behavioral2/memory/2232-171-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/2232-173-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/2232-177-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/2232-181-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 8 IoCs
resource yara_rule behavioral2/memory/4512-137-0x0000000000400000-0x0000000000484000-memory.dmp Nirsoft behavioral2/memory/1256-162-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/1256-164-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/1256-166-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/2232-171-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/2232-173-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/2232-177-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/2232-181-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation microsoft10converters.exe -
Executes dropped EXE 2 IoCs
pid Process 1472 Windows Update.exe 3380 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
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\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-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" Windows Update.exe -
Drops desktop.ini file(s) 2 IoCs
description ioc Process File created C:\Windows\assembly\Desktop.ini microsoft10converters.exe File opened for modification C:\Windows\assembly\Desktop.ini microsoft10converters.exe -
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 13 whatismyipaddress.com 15 whatismyipaddress.com -
Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 784 set thread context of 4512 784 microsoft10converters.exe 85 PID 1472 set thread context of 3380 1472 Windows Update.exe 89 PID 3380 set thread context of 1256 3380 Windows Update.exe 94 PID 3380 set thread context of 2232 3380 Windows Update.exe 97 -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\assembly microsoft10converters.exe File created C:\Windows\assembly\Desktop.ini microsoft10converters.exe File opened for modification C:\Windows\assembly\Desktop.ini microsoft10converters.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
pid Process 784 microsoft10converters.exe 784 microsoft10converters.exe 784 microsoft10converters.exe 784 microsoft10converters.exe 784 microsoft10converters.exe 784 microsoft10converters.exe 784 microsoft10converters.exe 1472 Windows Update.exe 1472 Windows Update.exe 1472 Windows Update.exe 784 microsoft10converters.exe 784 microsoft10converters.exe 1472 Windows Update.exe 1472 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 1472 Windows Update.exe 1472 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe 3380 Windows Update.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 784 microsoft10converters.exe Token: SeDebugPrivilege 1472 Windows Update.exe Token: SeDebugPrivilege 3380 Windows Update.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3380 Windows Update.exe -
Suspicious use of WriteProcessMemory 43 IoCs
description pid Process procid_target PID 784 wrote to memory of 2592 784 microsoft10converters.exe 83 PID 784 wrote to memory of 2592 784 microsoft10converters.exe 83 PID 784 wrote to memory of 2592 784 microsoft10converters.exe 83 PID 784 wrote to memory of 4512 784 microsoft10converters.exe 85 PID 784 wrote to memory of 4512 784 microsoft10converters.exe 85 PID 784 wrote to memory of 4512 784 microsoft10converters.exe 85 PID 784 wrote to memory of 4512 784 microsoft10converters.exe 85 PID 784 wrote to memory of 4512 784 microsoft10converters.exe 85 PID 784 wrote to memory of 4512 784 microsoft10converters.exe 85 PID 784 wrote to memory of 4512 784 microsoft10converters.exe 85 PID 784 wrote to memory of 4512 784 microsoft10converters.exe 85 PID 4512 wrote to memory of 1472 4512 microsoft10converters.exe 86 PID 4512 wrote to memory of 1472 4512 microsoft10converters.exe 86 PID 4512 wrote to memory of 1472 4512 microsoft10converters.exe 86 PID 1472 wrote to memory of 2564 1472 Windows Update.exe 87 PID 1472 wrote to memory of 2564 1472 Windows Update.exe 87 PID 1472 wrote to memory of 2564 1472 Windows Update.exe 87 PID 1472 wrote to memory of 3380 1472 Windows Update.exe 89 PID 1472 wrote to memory of 3380 1472 Windows Update.exe 89 PID 1472 wrote to memory of 3380 1472 Windows Update.exe 89 PID 1472 wrote to memory of 3380 1472 Windows Update.exe 89 PID 1472 wrote to memory of 3380 1472 Windows Update.exe 89 PID 1472 wrote to memory of 3380 1472 Windows Update.exe 89 PID 1472 wrote to memory of 3380 1472 Windows Update.exe 89 PID 1472 wrote to memory of 3380 1472 Windows Update.exe 89 PID 3380 wrote to memory of 1256 3380 Windows Update.exe 94 PID 3380 wrote to memory of 1256 3380 Windows Update.exe 94 PID 3380 wrote to memory of 1256 3380 Windows Update.exe 94 PID 3380 wrote to memory of 1256 3380 Windows Update.exe 94 PID 3380 wrote to memory of 1256 3380 Windows Update.exe 94 PID 3380 wrote to memory of 1256 3380 Windows Update.exe 94 PID 3380 wrote to memory of 1256 3380 Windows Update.exe 94 PID 3380 wrote to memory of 1256 3380 Windows Update.exe 94 PID 3380 wrote to memory of 1256 3380 Windows Update.exe 94 PID 3380 wrote to memory of 2232 3380 Windows Update.exe 97 PID 3380 wrote to memory of 2232 3380 Windows Update.exe 97 PID 3380 wrote to memory of 2232 3380 Windows Update.exe 97 PID 3380 wrote to memory of 2232 3380 Windows Update.exe 97 PID 3380 wrote to memory of 2232 3380 Windows Update.exe 97 PID 3380 wrote to memory of 2232 3380 Windows Update.exe 97 PID 3380 wrote to memory of 2232 3380 Windows Update.exe 97 PID 3380 wrote to memory of 2232 3380 Windows Update.exe 97 PID 3380 wrote to memory of 2232 3380 Windows Update.exe 97
Processes
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C:\Users\Admin\AppData\Local\Temp\microsoft10converters.exe"C:\Users\Admin\AppData\Local\Temp\microsoft10converters.exe"1⤵
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:784 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe"2⤵PID:2592
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C:\Users\Admin\AppData\Local\Temp\microsoft10converters.exe"C:\Users\Admin\AppData\Local\Temp\microsoft10converters.exe"2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4512 -
C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1472 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe"4⤵PID:2564
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C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"4⤵
- 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:3380 -
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:1256
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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:2232
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
59B
MD59b294a29cba9a63552604ad89c4d9444
SHA18e5bb542f31fccad06e69502c7dba5a62e9b9cb9
SHA256a3f87150ecc0223f9099533d33c8839a435a2276bf243c7fbf0f063a182d31e1
SHA512c45e8ae93eb82aefa86f7e46cbf47dfed4738b88b94e37925bc716a9b304ac6827f55d007f676783df6fed3a84d552f00ddf2dd00cbffdc1348f215878030a51
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Filesize
3KB
MD5f94dc819ca773f1e3cb27abbc9e7fa27
SHA19a7700efadc5ea09ab288544ef1e3cd876255086
SHA256a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92
SHA51272a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196
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Filesize
89KB
MD584c42d0f2c1ae761bef884638bc1eacd
SHA14353881e7f4e9c7610f4e0489183b55bb58bb574
SHA256331487446653875bf1e628b797a5283e40056654f7ff328eafbe39b0304480d3
SHA51243c307a38faa3a4b311597034cf75035a4434a1024d2a54e867e6a94b53b677898d71a858438d119000e872a7a6e92c5b31d277a8c207a94375ed4fd3c7beb87
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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