Analysis
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max time kernel
595s -
max time network
434s -
platform
windows10-2004_x64 -
resource
win10v2004-20240704-en -
resource tags
arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system -
submitted
07-07-2024 16:05
Behavioral task
behavioral1
Sample
Builder.exe
Resource
win10v2004-20240704-en
General
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Target
Builder.exe
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Size
273KB
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MD5
2a388e389df3136db839745d13a2bbd0
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SHA1
1ba063842110c80d2a6bdf8280ec88b426b9d4ea
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SHA256
a2251164857af32d0a13d3d91c9cb17af07f5858ad935c666a4787f12d585622
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SHA512
01715c872281fffd8587f5cdabb5a9d80c720871424a6bf50ad0e8de7aae69536d0d4ffecb611ecfb8e98190e96b8ba896c96bf2dc0ebdda511f74909b5cb559
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SSDEEP
3072:Ee8p6ewdOIwQx76vK/bvTv0cU+lL/dMlZZUZ0b2gTiwARE+WpC/Bz65/M6If+3JC:g6ewwIwQJ6vKX0c5MlYZ0b2zFxBt25
Malware Config
Extracted
asyncrat
Default
127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
https://api.telegram.org/bot5602729079:AAHue5HGrezQGgwKeWyn3WQgaqOZM5nlF_c/sendMessage?chat_id=6067717150
AsyncMutex_6SI8OkPnk
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delay
3
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install
false
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install_folder
%AppData%
Signatures
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StormKitty
StormKitty is an open source info stealer written in C#.
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StormKitty payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/1552-1-0x0000000000600000-0x000000000064A000-memory.dmp family_stormkitty -
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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Drops desktop.ini file(s) 9 IoCs
Processes:
Builder.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini Builder.exe File created C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini Builder.exe File opened for modification C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini Builder.exe File created C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini Builder.exe File created C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini Builder.exe File created C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini Builder.exe File created C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini Builder.exe File opened for modification C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini Builder.exe File created C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini Builder.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 12 icanhazip.com -
Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
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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.
Processes:
netsh.exenetsh.exedescription 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 -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
Builder.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 Builder.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier Builder.exe -
Suspicious behavior: EnumeratesProcesses 23 IoCs
Processes:
Builder.exepid process 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe 1552 Builder.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
Builder.exedescription pid process Token: SeDebugPrivilege 1552 Builder.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
Builder.execmd.execmd.exedescription pid process target process PID 1552 wrote to memory of 1932 1552 Builder.exe cmd.exe PID 1552 wrote to memory of 1932 1552 Builder.exe cmd.exe PID 1552 wrote to memory of 1932 1552 Builder.exe cmd.exe PID 1932 wrote to memory of 4976 1932 cmd.exe chcp.com PID 1932 wrote to memory of 4976 1932 cmd.exe chcp.com PID 1932 wrote to memory of 4976 1932 cmd.exe chcp.com PID 1932 wrote to memory of 4104 1932 cmd.exe netsh.exe PID 1932 wrote to memory of 4104 1932 cmd.exe netsh.exe PID 1932 wrote to memory of 4104 1932 cmd.exe netsh.exe PID 1932 wrote to memory of 1916 1932 cmd.exe findstr.exe PID 1932 wrote to memory of 1916 1932 cmd.exe findstr.exe PID 1932 wrote to memory of 1916 1932 cmd.exe findstr.exe PID 1552 wrote to memory of 3856 1552 Builder.exe cmd.exe PID 1552 wrote to memory of 3856 1552 Builder.exe cmd.exe PID 1552 wrote to memory of 3856 1552 Builder.exe cmd.exe PID 3856 wrote to memory of 1084 3856 cmd.exe chcp.com PID 3856 wrote to memory of 1084 3856 cmd.exe chcp.com PID 3856 wrote to memory of 1084 3856 cmd.exe chcp.com PID 3856 wrote to memory of 1732 3856 cmd.exe netsh.exe PID 3856 wrote to memory of 1732 3856 cmd.exe netsh.exe PID 3856 wrote to memory of 1732 3856 cmd.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Builder.exe"C:\Users\Admin\AppData\Local\Temp\Builder.exe"1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\chcp.comchcp 650013⤵
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C:\Windows\SysWOW64\netsh.exenetsh wlan show profile3⤵
- Event Triggered Execution: Netsh Helper DLL
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C:\Windows\SysWOW64\findstr.exefindstr All3⤵
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\chcp.comchcp 650013⤵
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C:\Windows\SysWOW64\netsh.exenetsh wlan show networks mode=bssid3⤵
- Event Triggered Execution: Netsh Helper DLL
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\4525e4682b3120724e35be72cf8daeee\msgid.datFilesize
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
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C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\Browsers\Firefox\Bookmarks.txtFilesize
105B
MD52e9d094dda5cdc3ce6519f75943a4ff4
SHA15d989b4ac8b699781681fe75ed9ef98191a5096c
SHA256c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
SHA512d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
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C:\Users\Admin\AppData\Local\8eb819baae042bca64babe0ebc72119b\Admin@ANYSUCUO_en-US\System\Process.txtFilesize
4KB
MD5eb53dbbf37fd80b0ab424f0af57a5544
SHA176e3df3dc8e849f2f951f04e85de2b7f3794c9f7
SHA25658d404284bbffc77ac2806915f40b816a48334f07f00694c1cf9cb38b0701591
SHA51235800bda02f51df49893ba45e9e4e2d8d554e67c8aa2d3c3ff251a634e062ec7dfc5179a937ac1290ebbd32af1ccd0d753160d463699d6c8ceec5241109eec00
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memory/1552-144-0x0000000074E70000-0x0000000075620000-memory.dmpFilesize
7.7MB
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memory/1552-3-0x0000000005020000-0x0000000005086000-memory.dmpFilesize
408KB
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memory/1552-2-0x0000000074E70000-0x0000000075620000-memory.dmpFilesize
7.7MB
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memory/1552-0-0x0000000074E7E000-0x0000000074E7F000-memory.dmpFilesize
4KB
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memory/1552-146-0x0000000005870000-0x0000000005902000-memory.dmpFilesize
584KB
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memory/1552-147-0x0000000005FC0000-0x0000000006564000-memory.dmpFilesize
5.6MB
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memory/1552-151-0x0000000005A80000-0x0000000005A8A000-memory.dmpFilesize
40KB
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memory/1552-1-0x0000000000600000-0x000000000064A000-memory.dmpFilesize
296KB
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memory/1552-157-0x0000000005C70000-0x0000000005C82000-memory.dmpFilesize
72KB
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memory/1552-180-0x0000000074E7E000-0x0000000074E7F000-memory.dmpFilesize
4KB
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memory/1552-181-0x0000000074E70000-0x0000000075620000-memory.dmpFilesize
7.7MB
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memory/1552-182-0x0000000074E70000-0x0000000075620000-memory.dmpFilesize
7.7MB