Analysis
-
max time kernel
106s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-20250314-en -
resource tags
arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system -
submitted
31/03/2025, 13:43
Behavioral task
behavioral1
Sample
Build.exe
Resource
win10v2004-20250314-en
General
-
Target
Build.exe
-
Size
245KB
-
MD5
8ada41ef81ed91792ec1bc128daa0d2f
-
SHA1
12064be78a56ee540b1fa8d2257dcf487de4e82d
-
SHA256
a7d45abc7981ac8e1d5e2f7e64ac063c083d9112dd8cd79440d892360b3a3224
-
SHA512
a4e086f307dce33cfc3abc13989b8da8d2558ecf85a0f5e04338fb441560a56e94281c3afbb1a06f2dc18ee4e5149b1a28a0e11c05a7d7b6a1117a436000dc5d
-
SSDEEP
6144:Ze5/oFzXx7YxnXywmipeHlUusJQLoqb+tpbz:U5wFzB7YxnXy+peOvL
Malware Config
Signatures
-
StormKitty
StormKitty is an open source info stealer written in C#.
-
StormKitty payload 1 IoCs
resource yara_rule behavioral1/memory/3452-1-0x00000000006C0000-0x0000000000704000-memory.dmp family_stormkitty -
Stormkitty family
-
Uses browser remote debugging 2 TTPs 5 IoCs
Can be used control the browser and steal sensitive information such as credentials and session cookies.
pid Process 3668 chrome.exe 848 chrome.exe 5316 chrome.exe 3440 chrome.exe 3968 chrome.exe -
Reads user/profile data of web browsers 3 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-1-5-21-446031748-3036493239-2009529691-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Build.exe Key opened \REGISTRY\USER\S-1-5-21-446031748-3036493239-2009529691-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Build.exe Key opened \REGISTRY\USER\S-1-5-21-446031748-3036493239-2009529691-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Build.exe -
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
-
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 2 ipinfo.io 3 ipinfo.io -
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 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 Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe -
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 cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language chcp.com 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 Build.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 -
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 4772 cmd.exe 4356 netsh.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 -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName chrome.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer chrome.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS chrome.exe -
Suspicious behavior: EnumeratesProcesses 27 IoCs
pid Process 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3452 Build.exe 3440 chrome.exe 3440 chrome.exe -
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
pid Process 3440 chrome.exe 3440 chrome.exe 3440 chrome.exe 3440 chrome.exe -
Suspicious use of AdjustPrivilegeToken 9 IoCs
description pid Process Token: SeDebugPrivilege 3452 Build.exe Token: SeShutdownPrivilege 3440 chrome.exe Token: SeCreatePagefilePrivilege 3440 chrome.exe Token: SeShutdownPrivilege 3440 chrome.exe Token: SeCreatePagefilePrivilege 3440 chrome.exe Token: SeShutdownPrivilege 3440 chrome.exe Token: SeCreatePagefilePrivilege 3440 chrome.exe Token: SeShutdownPrivilege 3440 chrome.exe Token: SeCreatePagefilePrivilege 3440 chrome.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 3440 chrome.exe 3440 chrome.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 3452 wrote to memory of 4772 3452 Build.exe 89 PID 3452 wrote to memory of 4772 3452 Build.exe 89 PID 3452 wrote to memory of 4772 3452 Build.exe 89 PID 4772 wrote to memory of 4776 4772 cmd.exe 91 PID 4772 wrote to memory of 4776 4772 cmd.exe 91 PID 4772 wrote to memory of 4776 4772 cmd.exe 91 PID 4772 wrote to memory of 4356 4772 cmd.exe 93 PID 4772 wrote to memory of 4356 4772 cmd.exe 93 PID 4772 wrote to memory of 4356 4772 cmd.exe 93 PID 4772 wrote to memory of 516 4772 cmd.exe 94 PID 4772 wrote to memory of 516 4772 cmd.exe 94 PID 4772 wrote to memory of 516 4772 cmd.exe 94 PID 3452 wrote to memory of 3636 3452 Build.exe 95 PID 3452 wrote to memory of 3636 3452 Build.exe 95 PID 3452 wrote to memory of 3636 3452 Build.exe 95 PID 3636 wrote to memory of 5440 3636 cmd.exe 97 PID 3636 wrote to memory of 5440 3636 cmd.exe 97 PID 3636 wrote to memory of 5440 3636 cmd.exe 97 PID 3636 wrote to memory of 5176 3636 cmd.exe 98 PID 3636 wrote to memory of 5176 3636 cmd.exe 98 PID 3636 wrote to memory of 5176 3636 cmd.exe 98 PID 3452 wrote to memory of 3440 3452 Build.exe 103 PID 3452 wrote to memory of 3440 3452 Build.exe 103 PID 3440 wrote to memory of 1944 3440 chrome.exe 104 PID 3440 wrote to memory of 1944 3440 chrome.exe 104 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 5432 3440 chrome.exe 105 PID 3440 wrote to memory of 3940 3440 chrome.exe 106 PID 3440 wrote to memory of 3940 3440 chrome.exe 106 PID 3440 wrote to memory of 1248 3440 chrome.exe 107 PID 3440 wrote to memory of 1248 3440 chrome.exe 107 PID 3440 wrote to memory of 1248 3440 chrome.exe 107 PID 3440 wrote to memory of 1248 3440 chrome.exe 107 PID 3440 wrote to memory of 1248 3440 chrome.exe 107 PID 3440 wrote to memory of 1248 3440 chrome.exe 107 PID 3440 wrote to memory of 1248 3440 chrome.exe 107 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-446031748-3036493239-2009529691-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Build.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-446031748-3036493239-2009529691-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Build.exe
Processes
-
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:3452 -
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:4772 -
C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
PID:4776
-
-
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:4356
-
-
C:\Windows\SysWOW64\findstr.exefindstr All3⤵
- System Location Discovery: System Language Discovery
PID:516
-
-
-
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:3636 -
C:\Windows\SysWOW64\chcp.comchcp 650013⤵
- System Location Discovery: System Language Discovery
PID:5440
-
-
C:\Windows\SysWOW64\netsh.exenetsh wlan show networks mode=bssid3⤵
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:5176
-
-
-
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --window-position=-2400,-2400 --remote-debugging-port=9222 --profile-directory="Default"2⤵
- Uses browser remote debugging
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3440 -
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=133.0.6943.60 --initial-client-data=0x100,0x104,0x108,0xdc,0x10c,0x7ffe1eb4dcf8,0x7ffe1eb4dd04,0x7ffe1eb4dd103⤵PID:1944
-
-
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --string-annotations --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --field-trial-handle=2016,i,17013516531831718325,7384641568680275801,262144 --variations-seed-version=20250314-050508.937000 --mojo-platform-channel-handle=1988 /prefetch:23⤵PID:5432
-
-
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --string-annotations --field-trial-handle=2252,i,17013516531831718325,7384641568680275801,262144 --variations-seed-version=20250314-050508.937000 --mojo-platform-channel-handle=2260 /prefetch:33⤵PID:3940
-
-
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --string-annotations --field-trial-handle=2428,i,17013516531831718325,7384641568680275801,262144 --variations-seed-version=20250314-050508.937000 --mojo-platform-channel-handle=2600 /prefetch:83⤵PID:1248
-
-
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --remote-debugging-port=9222 --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3200,i,17013516531831718325,7384641568680275801,262144 --variations-seed-version=20250314-050508.937000 --mojo-platform-channel-handle=3220 /prefetch:13⤵
- Uses browser remote debugging
PID:3668
-
-
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --remote-debugging-port=9222 --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3224,i,17013516531831718325,7384641568680275801,262144 --variations-seed-version=20250314-050508.937000 --mojo-platform-channel-handle=3464 /prefetch:13⤵
- Uses browser remote debugging
PID:3968
-
-
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --extension-process --enable-dinosaur-easter-egg-alt-images --remote-debugging-port=9222 --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4368,i,17013516531831718325,7384641568680275801,262144 --variations-seed-version=20250314-050508.937000 --mojo-platform-channel-handle=3196 /prefetch:23⤵
- Uses browser remote debugging
PID:848
-
-
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --remote-debugging-port=9222 --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --field-trial-handle=4780,i,17013516531831718325,7384641568680275801,262144 --variations-seed-version=20250314-050508.937000 --mojo-platform-channel-handle=4748 /prefetch:13⤵
- Uses browser remote debugging
PID:5316
-
-
-
C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe"C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe"1⤵PID:3232
Network
MITRE ATT&CK Enterprise v15
Persistence
Event Triggered Execution
1Netsh Helper DLL
1Modify Authentication Process
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Modify Authentication Process
1Steal Web Session Cookie
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
2B
MD5d751713988987e9331980363e24189ce
SHA197d170e1550eee4afc0af065b78cda302a97674c
SHA2564f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
SHA512b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af
-
Filesize
79KB
MD5dddd5d8737f7aed37b36b32cc7f6ba54
SHA150268d9e9a4a15d464252fc646122869d7e49f00
SHA256f9b7b48a8278ad2994633b4ef1be2b9e0703c06d4945fe13ea4cc07d8c0bdc0a
SHA5127e30267b19f6fdec2c34842171f82c2ec68e73aa3c022d3ab0ad9770e356164c56d771690210bbc15bdaf77ea39c355d5bd1e9b76bcb5a78a0fe2a8be246fb03
-
Filesize
81B
MD5ea511fc534efd031f852fcf490b76104
SHA1573e5fa397bc953df5422abbeb1a52bf94f7cf00
SHA256e5fe7f327ae62df007bd1117aa7f522dbbcd371ec67953f66d786424cb1d7995
SHA512f7d8e575a2332b0fbd491b5e092b7ed6b0942a5165557fcc5d215d873b05103aa6ba01843133871c1c7ac81b10182a15895be49885c98d1a379dd55f88004fae
-
Filesize
4KB
MD57d0eab50e36f6979a27a4f83d1542e49
SHA126bc77083c777c771de52ae3ab79c4acc7af2e3c
SHA256eb7e720993ffacb53a1abd77026c19416b7469769ae0e90d57daca4c2208edd3
SHA512e269a2d656fdd7eeaaffc7c890ada456fe2a007a71d30932860cc09fc48e87d678f77efa6100f37ff8b3d78f6900afe972226ab3ed575cd3df39ae42ea0d2255