Analysis
- max time kernel
150s - max time network
136s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system - submitted
11/08/2024, 00:54
Behavioral task
behavioral1
Sample
build.exe
Resource
win7-20240704-en
windows7-x64
19 signatures
150 seconds
Behavioral task
behavioral2
Sample
build.exe
Resource
win10-20240404-en
windows10-1703-x64
22 signatures
150 seconds
General
- Target build.exe
- Size 1.6MB
- Sample240811-a9flcaxbrm
- SHA256 615a6d34654e5f71fb42425485e13211a54dda151f901d30b09c6064edbd2102
- MD5 ff6ccb1779a4746097c903cc4990cde9
- SHA1 6fafe17c197a7db965c0b54964e79007be4c59e4
- SHA512 0f980580a1b85efaebc8b0371325f74fc6d1c5a39d3a05dd141bfdb34837c8670c41db578ca0e15da06d27d19d273482c724031edfbe958d834646f067903d15
- SSDEEP 49152:JkTq24GjdGSiqkqXfd+/9AqYanieKdsB:J1EjdGSiqkqXf0FLYW
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Family
-
stealerium
C2
-
https://discord.com/api/webhooks/1271994618187350106/NlTUFVTKg-sY-yt64wtu-kLBb-kh48Vr2qN8wrwwxhsKUHrF0qUb4nuI_FCeU5gNVv8o
Signatures
- Stealerium
An open source info stealer written in C# first seen in May 2022.
- Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 build.exe Key opened \REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 build.exe Key opened \REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 build.exe - Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 1 discord.com 2 discord.com - 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 5 icanhazip.com - Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\rescache\_merged\1601268389\715946058.pri taskmgr.exe File created C:\Windows\rescache\_merged\4183903823\2290032291.pri taskmgr.exe - Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
description ioc Process Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe - Program crash 1 IoCs
pid pid_target Process procid_target 2644 4740 WerFault.exe 71 - System Location Discovery: System Language Discovery 1 TTPs 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language findstr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language chcp.com Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language build.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language chcp.com - System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs
Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.
pid Process 2644 netsh.exe 4160 cmd.exe - Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 build.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier build.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 4740 build.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2444 taskmgr.exe - Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 4740 build.exe Token: SeSecurityPrivilege 696 msiexec.exe Token: SeDebugPrivilege 2444 taskmgr.exe Token: SeSystemProfilePrivilege 2444 taskmgr.exe Token: SeCreateGlobalPrivilege 2444 taskmgr.exe - Suspicious use of FindShellTrayWindow 64 IoCs
pid Process 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe - Suspicious use of SendNotifyMessage 64 IoCs
pid Process 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe 2444 taskmgr.exe - Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 4740 wrote to memory of 4160 4740 build.exe 73 PID 4740 wrote to memory of 4160 4740 build.exe 73 PID 4740 wrote to memory of 4160 4740 build.exe 73 PID 4160 wrote to memory of 1764 4160 cmd.exe 76 PID 4160 wrote to memory of 1764 4160 cmd.exe 76 PID 4160 wrote to memory of 1764 4160 cmd.exe 76 PID 4160 wrote to memory of 2644 4160 cmd.exe 77 PID 4160 wrote to memory of 2644 4160 cmd.exe 77 PID 4160 wrote to memory of 2644 4160 cmd.exe 77 PID 4160 wrote to memory of 2632 4160 cmd.exe 78 PID 4160 wrote to memory of 2632 4160 cmd.exe 78 PID 4160 wrote to memory of 2632 4160 cmd.exe 78 PID 4740 wrote to memory of 4924 4740 build.exe 81 PID 4740 wrote to memory of 4924 4740 build.exe 81 PID 4740 wrote to memory of 4924 4740 build.exe 81 PID 4924 wrote to memory of 3048 4924 cmd.exe 83 PID 4924 wrote to memory of 3048 4924 cmd.exe 83 PID 4924 wrote to memory of 3048 4924 cmd.exe 83 PID 4924 wrote to memory of 3328 4924 cmd.exe 84 PID 4924 wrote to memory of 3328 4924 cmd.exe 84 PID 4924 wrote to memory of 3328 4924 cmd.exe 84 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 build.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 build.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\build.exe"C:\Users\Admin\AppData\Local\Temp\build.exe"1⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:4740 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Wi-Fi Discovery
- Suspicious use of WriteProcessMemory
PID:4160 -
C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
PID:1764
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C:\Windows\SysWOW64\netsh.exenetsh wlan show profile3⤵
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Wi-Fi Discovery
PID:2644
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C:\Windows\SysWOW64\findstr.exefindstr All3⤵
- System Location Discovery: System Language Discovery
PID:2632
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4924 -
C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
PID:3048
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C:\Windows\SysWOW64\netsh.exenetsh wlan show networks mode=bssid3⤵
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:3328
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4740 -s 22242⤵
- Program crash
PID:2644
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C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Suspicious use of AdjustPrivilegeToken
PID:696
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Drops file in Windows directory
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2444
Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\Browsers\Firefox\Bookmarks.txt
- Size 105B
- SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
- MD5 2e9d094dda5cdc3ce6519f75943a4ff4
- SHA1 5d989b4ac8b699781681fe75ed9ef98191a5096c
- SHA512 d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\Directories\OneDrive.txt
- Size 25B
- SHA256 8ddfc481b1b6ae30815ecce8a73755862f24b3bb7fdebdbf099e037d53eb082e
- MD5 966247eb3ee749e21597d73c4176bd52
- SHA1 1e9e63c2872cef8f015d4b888eb9f81b00a35c79
- SHA512 bd30aec68c070e86e3dec787ed26dd3d6b7d33d83e43cb2d50f9e2cff779fee4c96afbbe170443bd62874073a844beb29a69b10c72c54d7d444a8d86cfd7b5aa
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\Directories\Startup.txt
- Size 24B
- SHA256 889ed51f9c16a4b989bda57957d3e132b1a9c117ee84e208207f2fa208a59483
- MD5 68c93da4981d591704cea7b71cebfb97
- SHA1 fd0f8d97463cd33892cc828b4ad04e03fc014fa6
- SHA512 63455c726b55f2d4de87147a75ff04f2daa35278183969ccf185d23707840dd84363bec20d4e8c56252196ce555001ca0e61b3f4887d27577081fdef9e946402
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\Directories\Videos.txt
- Size 23B
- SHA256 a67aa329b7d878de61671e18cd2f4b011d11cbac67ea779818c6dafad2d70733
- MD5 1fddbf1169b6c75898b86e7e24bc7c1f
- SHA1 d2091060cb5191ff70eb99c0088c182e80c20f8c
- SHA512 20bfeafde7fec1753fef59de467bd4a3dd7fe627e8c44e95fe62b065a5768c4508e886ec5d898e911a28cf6365f455c9ab1ebe2386d17a76f53037f99061fd4d
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\System\Apps.txt
- Size 4KB
- SHA256 c1cb3d0696471301d735bef0bdb1739a3d0231854969daf3e0ab9913727612a4
- MD5 97bc566b727d95f13d10d76746c5738c
- SHA1 e36fdfc8b68c7c52b07cbc9f6a6fb5a5167e29a6
- SHA512 8d0ffce74642856c62363b661e108622b88f928e5ac11f1e800048dff7bcb208f31be15c8a368c4e364ff9303c89a355cfe350d59e0f3a6d47b87aa7f2f703a9
- SSDEEP 96:OfpWX3fpWXPfpWmNpJfdQWEfzpKEfzDvufdbfFnSfFnaiRpqffytrhffyS08cofX:wpW/pW3pWsdn2zw2zEd7tstkyLyJ8cCX
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\System\Debug.txt
- Size 1KB
- SHA256 76fddee2f9d1ce21f3037536f95081e1d0f045f538b844713c3c885c16f6d2bc
- MD5 431ead9af8bdbe61a2494c3d8a57e51c
- SHA1 ede4b6b55ccda539d49fca49dea9ecc77894a6de
- SHA512 c585e37f3fb9749a176ed69460312decef3e78d96104999bad7feb7d8124dbd457c99ca35fe80c7fee9516dba5132258694646ef7b22c3ecc94b6f66d72facf3
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\System\Process.txt
- Size 4KB
- SHA256 00b447a73425e13ac1f35d9c2c52b74afeef1299861b9d7f100fadc528a0a893
- MD5 a27fd159123e6c0ffc57ad25602fd721
- SHA1 ab0f00fec7d8bbfa13c9a18021721caf760fd54b
- SHA512 fdf0d449569e977dcdc60e6a734d3221a415b93237b8f82702d70bea917cf0fb7ddd545ec34cd86535a082f68a1cd5653c5e752e5db6cf20d573a44d14e80c24
- SSDEEP 48:CINrBMx1pLjim123lt7jZm6IM9Dbvuyk2VN:CqBgim123r7jZmNM9DuWN
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\System\ProductKey.txt
- Size 29B
- SHA256 f6cadfd4e4c25ff3b8cffe54a2af24a757a349abbf4e1142ec4c9789347fe8b3
- MD5 71eb5479298c7afc6d126fa04d2a9bde
- SHA1 a9b3d5505cf9f84bb6c2be2acece53cb40075113
- SHA512 7c6687e21d31ec1d6d2eff04b07b465f875fd80df26677f1506b14158444cf55044eb6674880bd5bd44f04ff73023b26cb19b8837427a1d6655c96df52f140bd
- MD5 SHA1 SHA512