Analysis
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max time kernel
27s -
max time network
27s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
01-10-2024 02:22
Behavioral task
behavioral1
Sample
build.exe
Resource
win10v2004-20240802-en
General
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Target
build.exe
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Size
3.6MB
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MD5
8b561e03d153ec263381d6aa1bd1f109
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SHA1
593bf8a787cf5b186d1bb117515d137f154e1503
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SHA256
0d11e0d8d1204d1e8a953d13cd3e88e4715e8c06d8c695d32eb41a80207ce707
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SHA512
50c98ead4e1635c5b27b4f094a7feb0b315bca054251e3e70541e87c48c3e1b93adb24ba21f05b2fa3a90fd6b8e38591e223980140737841f4604c66b14845c1
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SSDEEP
98304:WEjdGSi3kqXf0FLYWCLbi6sfLxkuahjCOeX9YG9see5GnRyCAm0makxH13:43kSILYWqZAkuujCPX9YG9he5GnQCAJS
Malware Config
Extracted
stealerium
7960275769:AAFsNj7Q9GrsBKzVEmN2fGOLvIQWelRdwOA
Signatures
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Stealerium
An open source info stealer written in C# first seen in May 2022.
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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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation build.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 build.exe Key opened \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 build.exe Key opened \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 build.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 26 icanhazip.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 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 Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe -
System Location Discovery: System Language Discovery 1 TTPs 12 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 chcp.com Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language timeout.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.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 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 build.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language chcp.com Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language findstr.exe -
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 1468 cmd.exe 2252 netsh.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_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\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 -
Delays execution with timeout.exe 1 IoCs
pid Process 4260 timeout.exe -
Kills process with taskkill 1 IoCs
pid Process 3240 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 34 IoCs
pid Process 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 1408 build.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeDebugPrivilege 1408 build.exe Token: SeSecurityPrivilege 1444 msiexec.exe Token: SeDebugPrivilege 4420 taskmgr.exe Token: SeSystemProfilePrivilege 4420 taskmgr.exe Token: SeCreateGlobalPrivilege 4420 taskmgr.exe Token: SeDebugPrivilege 3240 taskkill.exe Token: 33 4420 taskmgr.exe Token: SeIncBasePriorityPrivilege 4420 taskmgr.exe -
Suspicious use of FindShellTrayWindow 33 IoCs
pid Process 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe -
Suspicious use of SendNotifyMessage 33 IoCs
pid Process 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe 4420 taskmgr.exe -
Suspicious use of WriteProcessMemory 33 IoCs
description pid Process procid_target PID 1408 wrote to memory of 1468 1408 build.exe 85 PID 1408 wrote to memory of 1468 1408 build.exe 85 PID 1408 wrote to memory of 1468 1408 build.exe 85 PID 1468 wrote to memory of 4280 1468 cmd.exe 88 PID 1468 wrote to memory of 4280 1468 cmd.exe 88 PID 1468 wrote to memory of 4280 1468 cmd.exe 88 PID 1468 wrote to memory of 2252 1468 cmd.exe 89 PID 1468 wrote to memory of 2252 1468 cmd.exe 89 PID 1468 wrote to memory of 2252 1468 cmd.exe 89 PID 1468 wrote to memory of 2244 1468 cmd.exe 90 PID 1468 wrote to memory of 2244 1468 cmd.exe 90 PID 1468 wrote to memory of 2244 1468 cmd.exe 90 PID 1408 wrote to memory of 3756 1408 build.exe 94 PID 1408 wrote to memory of 3756 1408 build.exe 94 PID 1408 wrote to memory of 3756 1408 build.exe 94 PID 3756 wrote to memory of 3320 3756 cmd.exe 96 PID 3756 wrote to memory of 3320 3756 cmd.exe 96 PID 3756 wrote to memory of 3320 3756 cmd.exe 96 PID 3756 wrote to memory of 4212 3756 cmd.exe 97 PID 3756 wrote to memory of 4212 3756 cmd.exe 97 PID 3756 wrote to memory of 4212 3756 cmd.exe 97 PID 1408 wrote to memory of 3180 1408 build.exe 102 PID 1408 wrote to memory of 3180 1408 build.exe 102 PID 1408 wrote to memory of 3180 1408 build.exe 102 PID 3180 wrote to memory of 1288 3180 cmd.exe 104 PID 3180 wrote to memory of 1288 3180 cmd.exe 104 PID 3180 wrote to memory of 1288 3180 cmd.exe 104 PID 3180 wrote to memory of 3240 3180 cmd.exe 105 PID 3180 wrote to memory of 3240 3180 cmd.exe 105 PID 3180 wrote to memory of 3240 3180 cmd.exe 105 PID 3180 wrote to memory of 4260 3180 cmd.exe 106 PID 3180 wrote to memory of 4260 3180 cmd.exe 106 PID 3180 wrote to memory of 4260 3180 cmd.exe 106 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 build.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\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⤵
- Checks computer location settings
- 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:1408 -
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:1468 -
C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
PID:4280
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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:2252
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C:\Windows\SysWOW64\findstr.exefindstr All3⤵
- System Location Discovery: System Language Discovery
PID:2244
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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:3756 -
C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
PID:3320
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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:4212
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\821f0ed0-cc5e-422b-a4f2-68acf281dcff.bat"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3180 -
C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
PID:1288
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C:\Windows\SysWOW64\taskkill.exetaskkill /F /PID 14083⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3240
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C:\Windows\SysWOW64\timeout.exetimeout /T 2 /NOBREAK3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:4260
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C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1444
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4420
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
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C:\Users\Admin\AppData\Local\1f7494d3696a1afeac06a8ddab9ed526\Admin@DSEYXUOD_en-US\Browsers\Firefox\Bookmarks.txt
Filesize105B
MD52e9d094dda5cdc3ce6519f75943a4ff4
SHA15d989b4ac8b699781681fe75ed9ef98191a5096c
SHA256c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
SHA512d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
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C:\Users\Admin\AppData\Local\1f7494d3696a1afeac06a8ddab9ed526\Admin@DSEYXUOD_en-US\Directories\OneDrive.txt
Filesize25B
MD5966247eb3ee749e21597d73c4176bd52
SHA11e9e63c2872cef8f015d4b888eb9f81b00a35c79
SHA2568ddfc481b1b6ae30815ecce8a73755862f24b3bb7fdebdbf099e037d53eb082e
SHA512bd30aec68c070e86e3dec787ed26dd3d6b7d33d83e43cb2d50f9e2cff779fee4c96afbbe170443bd62874073a844beb29a69b10c72c54d7d444a8d86cfd7b5aa
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C:\Users\Admin\AppData\Local\1f7494d3696a1afeac06a8ddab9ed526\Admin@DSEYXUOD_en-US\Directories\Startup.txt
Filesize24B
MD568c93da4981d591704cea7b71cebfb97
SHA1fd0f8d97463cd33892cc828b4ad04e03fc014fa6
SHA256889ed51f9c16a4b989bda57957d3e132b1a9c117ee84e208207f2fa208a59483
SHA51263455c726b55f2d4de87147a75ff04f2daa35278183969ccf185d23707840dd84363bec20d4e8c56252196ce555001ca0e61b3f4887d27577081fdef9e946402
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C:\Users\Admin\AppData\Local\1f7494d3696a1afeac06a8ddab9ed526\Admin@DSEYXUOD_en-US\Directories\Videos.txt
Filesize23B
MD51fddbf1169b6c75898b86e7e24bc7c1f
SHA1d2091060cb5191ff70eb99c0088c182e80c20f8c
SHA256a67aa329b7d878de61671e18cd2f4b011d11cbac67ea779818c6dafad2d70733
SHA51220bfeafde7fec1753fef59de467bd4a3dd7fe627e8c44e95fe62b065a5768c4508e886ec5d898e911a28cf6365f455c9ab1ebe2386d17a76f53037f99061fd4d
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Filesize
6KB
MD5211bea1a19e2a4612fbeff18f1cc913c
SHA18ec73e9eca88e4a24ba6a584d1c542c252cf0595
SHA256aa6022aae6e6f02592f5738015280a0750488adb645e9cbb645fec64ee537b09
SHA51281ae103574c83c780e0464829d9a339dde245315fdcb0b30188bfac8a68f4e910bc1079b39acc4f725e65be476efb6509b8e8c39046ca5fbe88e222f08a27324
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C:\Users\Admin\AppData\Local\1f7494d3696a1afeac06a8ddab9ed526\Admin@DSEYXUOD_en-US\System\Process.txt
Filesize4KB
MD5f83fc901e7d5658761c11dc89da41f0f
SHA120c12acaac92f7e92145e66ee5f78d49aef85ebf
SHA256c355b6abe10ad359b8eb8d9ec4296d85f2321feb354b81d7723067a601bc0946
SHA5128ff7ae45b26d6551abe2460dae14f5035809126f1c1443d8495651fc7e3eaae245cdc1d9afc23d8a9b8ffd0f9a850c45829870107810b01a2b12661905e612fe
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C:\Users\Admin\AppData\Local\1f7494d3696a1afeac06a8ddab9ed526\Admin@DSEYXUOD_en-US\System\ProductKey.txt
Filesize31B
MD5390bf9273709c4e84ca66ff94c05c86f
SHA16416d2c5dc0c1769296ff019c398f7ce99e57151
SHA2563f9b0d4d54ef65cb1244663ce2adf691dc7e98d2ed72c3b290bbe374c0c6b728
SHA51211930bdc569136403189d17dac5c9468eac41d6eb76bfb558d36c10410f34d59bcdc2dbea449e7f2e1d38f2710974e123ee4a0c4a2fb5c19448acb99020b3b15
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Filesize
2B
MD5ea5d2f1c4608232e07d3aa3d998e5135
SHA1c66c65175fecc3103b3b587be9b5b230889c8628
SHA256a68b412c4282555f15546cf6e1fc42893b7e07f271557ceb021821098dd66c1b
SHA512e559aefac6fe1b006d3497abee2649ceb71fcceea73fd223782338ab29c08e5b887836b806349d5ace9030c69ca91850b01c468825d02359a5faee7261de415e
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Filesize
152B
MD58c0b9d60e4d5b23f49dd394dd3441778
SHA155549c5dc8f26bc27696c0b802e0c549cf2d435e
SHA2569300bf82bc5a2ba760d9621ed8e27becda65be243b6668596d199bae42bb67f7
SHA512d5bfe04a4b5cac7603944b39c201e3cdd575d39bbf6b34b767a11b9ed675b52dafc1d043315f5f7e09e78cc0275a45540442ca0fd022c4ed67b3c42623e5bbd1
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Filesize
9KB
MD56e8e59e8717e6742de47acb62e63cc94
SHA187b9ad8d543ee091e68dd6ecc3b21d23029307fb
SHA2569566806737cdc2077ec430aa6b7f9544c06751baff5c2f7af923b39da8f735d1
SHA512147935ad6f55c4af4c4bc0c3c9f26fce3778c4841f0f09f337b0c1fe7945853bc289ba3f2c31fbd568db3d6fd788aacbe39ff8c24334a36c9bb9ace92108b5bf