Analysis
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max time kernel
148s -
max time network
150s -
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 16:07
Static task
static1
Behavioral task
behavioral1
Sample
b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7.exe
Resource
win10v2004-20240802-en
General
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Target
b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7.exe
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Size
263KB
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MD5
885c72a729b202512aadc7c7a69d129d
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SHA1
aa79d439039050d55e6c01d116926ee3852c8d34
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SHA256
b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7
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SHA512
52fd34ef5cde4ee8618774f69c8989e3e5431c2eccd226fa1b06382ad423ca897d5ba374c2ed1720fea0c58e777f41ba435e02867d446a216b1871933fd25a0b
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SSDEEP
6144:IDKW1Lgbdl0TBBvjc/DnMugecPSgoUS/ySQha:Oh1Lk70TnvjcwugDLkySt
Malware Config
Signatures
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StormKitty
StormKitty is an open source info stealer written in C#.
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StormKitty payload 2 IoCs
resource yara_rule behavioral2/files/0x000a0000000234ef-69.dat family_stormkitty behavioral2/memory/3816-77-0x0000000000CE0000-0x0000000000D0E000-memory.dmp family_stormkitty -
.NET Reactor proctector 31 IoCs
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
resource yara_rule behavioral2/memory/4476-1-0x0000000002400000-0x0000000002432000-memory.dmp net_reactor behavioral2/memory/4476-4-0x0000000002470000-0x00000000024A2000-memory.dmp net_reactor behavioral2/memory/4476-46-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-52-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-58-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-56-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-50-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-48-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-44-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-42-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-41-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-38-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-36-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-34-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-32-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-30-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-26-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-24-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-22-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-20-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-60-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-18-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-14-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-12-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-10-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-8-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-54-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-28-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-16-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-6-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor behavioral2/memory/4476-5-0x0000000002470000-0x000000000249B000-memory.dmp net_reactor -
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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7.exe -
Executes dropped EXE 1 IoCs
pid Process 3816 Build_Crystal_Stealer.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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Drops desktop.ini file(s) 8 IoCs
description ioc Process File created C:\Users\Admin\AppData\Local\b7518339e437082f220ef3d4b601feb9\Admin@ERHQJVYQ_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini Build_Crystal_Stealer.exe File created C:\Users\Admin\AppData\Local\b7518339e437082f220ef3d4b601feb9\Admin@ERHQJVYQ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini Build_Crystal_Stealer.exe File created C:\Users\Admin\AppData\Local\b7518339e437082f220ef3d4b601feb9\Admin@ERHQJVYQ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini Build_Crystal_Stealer.exe File created C:\Users\Admin\AppData\Local\b7518339e437082f220ef3d4b601feb9\Admin@ERHQJVYQ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini Build_Crystal_Stealer.exe File created C:\Users\Admin\AppData\Local\b7518339e437082f220ef3d4b601feb9\Admin@ERHQJVYQ_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini Build_Crystal_Stealer.exe File opened for modification C:\Users\Admin\AppData\Local\b7518339e437082f220ef3d4b601feb9\Admin@ERHQJVYQ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini Build_Crystal_Stealer.exe File opened for modification C:\Users\Admin\AppData\Local\b7518339e437082f220ef3d4b601feb9\Admin@ERHQJVYQ_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini Build_Crystal_Stealer.exe File created C:\Users\Admin\AppData\Local\b7518339e437082f220ef3d4b601feb9\Admin@ERHQJVYQ_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini Build_Crystal_Stealer.exe -
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 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 -
System Location Discovery: System Language Discovery 1 TTPs 9 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 netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language chcp.com Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Build_Crystal_Stealer.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 b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language findstr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.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 2912 cmd.exe 3156 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_Crystal_Stealer.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier Build_Crystal_Stealer.exe -
Suspicious behavior: EnumeratesProcesses 25 IoCs
pid Process 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe 3816 Build_Crystal_Stealer.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4476 b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7.exe Token: SeDebugPrivilege 3816 Build_Crystal_Stealer.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 4476 wrote to memory of 3816 4476 b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7.exe 82 PID 4476 wrote to memory of 3816 4476 b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7.exe 82 PID 4476 wrote to memory of 3816 4476 b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7.exe 82 PID 3816 wrote to memory of 2912 3816 Build_Crystal_Stealer.exe 84 PID 3816 wrote to memory of 2912 3816 Build_Crystal_Stealer.exe 84 PID 3816 wrote to memory of 2912 3816 Build_Crystal_Stealer.exe 84 PID 2912 wrote to memory of 1640 2912 cmd.exe 86 PID 2912 wrote to memory of 1640 2912 cmd.exe 86 PID 2912 wrote to memory of 1640 2912 cmd.exe 86 PID 2912 wrote to memory of 3156 2912 cmd.exe 87 PID 2912 wrote to memory of 3156 2912 cmd.exe 87 PID 2912 wrote to memory of 3156 2912 cmd.exe 87 PID 2912 wrote to memory of 952 2912 cmd.exe 88 PID 2912 wrote to memory of 952 2912 cmd.exe 88 PID 2912 wrote to memory of 952 2912 cmd.exe 88 PID 3816 wrote to memory of 1752 3816 Build_Crystal_Stealer.exe 91 PID 3816 wrote to memory of 1752 3816 Build_Crystal_Stealer.exe 91 PID 3816 wrote to memory of 1752 3816 Build_Crystal_Stealer.exe 91 PID 1752 wrote to memory of 4720 1752 cmd.exe 93 PID 1752 wrote to memory of 4720 1752 cmd.exe 93 PID 1752 wrote to memory of 4720 1752 cmd.exe 93 PID 1752 wrote to memory of 3112 1752 cmd.exe 94 PID 1752 wrote to memory of 3112 1752 cmd.exe 94 PID 1752 wrote to memory of 3112 1752 cmd.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7.exe"C:\Users\Admin\AppData\Local\Temp\b9070dcf9e13ebd0187be2084de4c3fe485cd4d38a8bc7a94420fc744fac4ba7.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4476 -
C:\Users\Admin\AppData\Local\Temp\Build_Crystal_Stealer.exe"C:\Users\Admin\AppData\Local\Temp\Build_Crystal_Stealer.exe"2⤵
- Executes dropped EXE
- Drops desktop.ini file(s)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3816 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All3⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Wi-Fi Discovery
- Suspicious use of WriteProcessMemory
PID:2912 -
C:\Windows\SysWOW64\chcp.comchcp 650014⤵
- System Location Discovery: System Language Discovery
PID:1640
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C:\Windows\SysWOW64\netsh.exenetsh wlan show profile4⤵
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Wi-Fi Discovery
PID:3156
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C:\Windows\SysWOW64\findstr.exefindstr All4⤵
- System Location Discovery: System Language Discovery
PID:952
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1752 -
C:\Windows\SysWOW64\chcp.comchcp 650014⤵
- System Location Discovery: System Language Discovery
PID:4720
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C:\Windows\SysWOW64\netsh.exenetsh wlan show networks mode=bssid4⤵
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:3112
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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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Filesize
162KB
MD55e9c072eeea44c2bdaa746eefd4eb1e0
SHA1d62dc2728656cb3d2de02a6abf8b75e94d9fb698
SHA2563df27764bca3f7bffe8e7fbfc62cf2e88b084077e1216cfd1049e922bb4b73c0
SHA51203d0258fb5cf0ef78350808e75db6912eccb73ce3e60db916ca7fa5ad36d2da31bcf75628d07242a543530737d9e5154f933d15e9c3a84cde7be8f090ab7379d
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C:\Users\Admin\AppData\Local\b7518339e437082f220ef3d4b601feb9\Admin@ERHQJVYQ_en-US\Browsers\Firefox\Bookmarks.txt
Filesize105B
MD52e9d094dda5cdc3ce6519f75943a4ff4
SHA15d989b4ac8b699781681fe75ed9ef98191a5096c
SHA256c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
SHA512d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
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C:\Users\Admin\AppData\Local\b7518339e437082f220ef3d4b601feb9\Admin@ERHQJVYQ_en-US\System\Process.txt
Filesize4KB
MD5e2037dae2419f02930e7c833d257c72a
SHA1142aafe0c5df942903ec393941f6ebbd55a4d0fd
SHA256d793ae00c3de2e0e80386f8ad48ce71bc89ac2fca6e30c99319143b0204e0fab
SHA5121e79d191ef7e0c242edac27be7a4177b8bb75ed6f6001079752498e97d2fdb9cc9beabaa2965f849d5b40f2045a87fe5da431c82ce66639e00fa9d0a94b9508c
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Filesize
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99