Analysis
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max time kernel
295s -
max time network
203s -
platform
windows10-2004_x64 -
resource
win10v2004-20240730-en -
resource tags
arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system -
submitted
02-08-2024 08:43
Behavioral task
behavioral1
Sample
Builder.exe
Resource
win10v2004-20240730-en
General
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Target
Builder.exe
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Size
7.1MB
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MD5
479c20170f53c96f24c77610b86fa352
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SHA1
99c1c05a229e9b2e6f812f0fa7db4ac78c9cae1e
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SHA256
df814ecf5dd2f631b9b728148c00ba2973b6efbb06364c5a4f0883ddad2549ea
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SHA512
1c6a7e336f64283dfd2ebb3c259f84bd87f32d7d70d8783e11b45878677c3e95b45c9e7f73ae2c77d3860f95bf6cb85bf85e4fe3ca1d311f9cf153d642f27d61
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SSDEEP
196608:Zmx49UBA1HeT39Iig/f1ncKOVVtk7HdGtQbNPUQ:0aT1+TtIio0VQ9G6r
Malware Config
Extracted
asyncrat
Default
127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
https://api.telegram.org/bot6758433214:AAHsOKdFy4qDz6vRHO6UQUpRG85G-wZvC1Y/sendMessage?chat_id=6234857847
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 2 IoCs
resource yara_rule behavioral1/files/0x000700000002345c-30.dat family_stormkitty behavioral1/memory/1116-33-0x0000000000E40000-0x0000000000E72000-memory.dmp family_stormkitty -
Async RAT payload 1 IoCs
resource yara_rule behavioral1/files/0x000700000002345c-30.dat family_asyncrat -
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
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Executes dropped EXE 1 IoCs
pid Process 1116 Builder.exe -
Loads dropped DLL 4 IoCs
pid Process 3204 Builder.exe 3204 Builder.exe 3204 Builder.exe 3204 Builder.exe -
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) 7 IoCs
description ioc Process File created C:\Users\Admin\AppData\Local\f2150a626e1ebf5832ab3f5e7e988505\Admin@LMBIBFCX_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini Builder.exe File created C:\Users\Admin\AppData\Local\f2150a626e1ebf5832ab3f5e7e988505\Admin@LMBIBFCX_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini Builder.exe File created C:\Users\Admin\AppData\Local\f2150a626e1ebf5832ab3f5e7e988505\Admin@LMBIBFCX_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini Builder.exe File created C:\Users\Admin\AppData\Local\f2150a626e1ebf5832ab3f5e7e988505\Admin@LMBIBFCX_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini Builder.exe File created C:\Users\Admin\AppData\Local\f2150a626e1ebf5832ab3f5e7e988505\Admin@LMBIBFCX_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini Builder.exe File opened for modification C:\Users\Admin\AppData\Local\f2150a626e1ebf5832ab3f5e7e988505\Admin@LMBIBFCX_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini Builder.exe File created C:\Users\Admin\AppData\Local\f2150a626e1ebf5832ab3f5e7e988505\Admin@LMBIBFCX_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini Builder.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 28 pastebin.com 29 pastebin.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 18 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.
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 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 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 Builder.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 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 2432 cmd.exe 4328 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 Builder.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier Builder.exe -
Suspicious behavior: EnumeratesProcesses 23 IoCs
pid Process 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe 1116 Builder.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1116 Builder.exe -
Suspicious use of WriteProcessMemory 28 IoCs
description pid Process procid_target PID 4596 wrote to memory of 3204 4596 Builder.exe 84 PID 4596 wrote to memory of 3204 4596 Builder.exe 84 PID 3204 wrote to memory of 1768 3204 Builder.exe 87 PID 3204 wrote to memory of 1768 3204 Builder.exe 87 PID 1768 wrote to memory of 1116 1768 cmd.exe 89 PID 1768 wrote to memory of 1116 1768 cmd.exe 89 PID 1768 wrote to memory of 1116 1768 cmd.exe 89 PID 1116 wrote to memory of 2432 1116 Builder.exe 92 PID 1116 wrote to memory of 2432 1116 Builder.exe 92 PID 1116 wrote to memory of 2432 1116 Builder.exe 92 PID 2432 wrote to memory of 4784 2432 cmd.exe 94 PID 2432 wrote to memory of 4784 2432 cmd.exe 94 PID 2432 wrote to memory of 4784 2432 cmd.exe 94 PID 2432 wrote to memory of 4328 2432 cmd.exe 95 PID 2432 wrote to memory of 4328 2432 cmd.exe 95 PID 2432 wrote to memory of 4328 2432 cmd.exe 95 PID 2432 wrote to memory of 2084 2432 cmd.exe 96 PID 2432 wrote to memory of 2084 2432 cmd.exe 96 PID 2432 wrote to memory of 2084 2432 cmd.exe 96 PID 1116 wrote to memory of 4280 1116 Builder.exe 97 PID 1116 wrote to memory of 4280 1116 Builder.exe 97 PID 1116 wrote to memory of 4280 1116 Builder.exe 97 PID 4280 wrote to memory of 60 4280 cmd.exe 99 PID 4280 wrote to memory of 60 4280 cmd.exe 99 PID 4280 wrote to memory of 60 4280 cmd.exe 99 PID 4280 wrote to memory of 3016 4280 cmd.exe 100 PID 4280 wrote to memory of 3016 4280 cmd.exe 100 PID 4280 wrote to memory of 3016 4280 cmd.exe 100
Processes
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C:\Users\Admin\AppData\Local\Temp\Builder.exe"C:\Users\Admin\AppData\Local\Temp\Builder.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4596 -
C:\Users\Admin\AppData\Local\Temp\Builder.exe"C:\Users\Admin\AppData\Local\Temp\Builder.exe"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3204 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c C:\\Builder.exe3⤵
- Suspicious use of WriteProcessMemory
PID:1768 -
C:\Builder.exeC:\\Builder.exe4⤵
- 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:1116 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All5⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Wi-Fi Discovery
- Suspicious use of WriteProcessMemory
PID:2432 -
C:\Windows\SysWOW64\chcp.comchcp 650016⤵
- System Location Discovery: System Language Discovery
PID:4784
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C:\Windows\SysWOW64\netsh.exenetsh wlan show profile6⤵
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Wi-Fi Discovery
PID:4328
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C:\Windows\SysWOW64\findstr.exefindstr All6⤵
- System Location Discovery: System Language Discovery
PID:2084
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid5⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4280 -
C:\Windows\SysWOW64\chcp.comchcp 650016⤵
- System Location Discovery: System Language Discovery
PID:60
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C:\Windows\SysWOW64\netsh.exenetsh wlan show networks mode=bssid6⤵
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:3016
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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
175KB
MD5f0cfc7f8ad2f1decd4a35d98b6328b9a
SHA149bb49729ffa4fe2d9e7430338361d0be1478e49
SHA2569d9e37366bb8cf978f78b94e97fd457b6751baeae703252c7fde6cf852306856
SHA512916cc4b6d88e4d0c1c528c31f65ba4697a54780f56b1fb33c4946c260b401405bc94628bc91791f298db69f79b4044b95bcb4f75289e0357e1a664bfc98e7d42
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Filesize
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
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Filesize
116KB
MD5be8dbe2dc77ebe7f88f910c61aec691a
SHA1a19f08bb2b1c1de5bb61daf9f2304531321e0e40
SHA2564d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
SHA5120da644472b374f1da449a06623983d0477405b5229e386accadb154b43b8b083ee89f07c3f04d2c0c7501ead99ad95aecaa5873ff34c5eeb833285b598d5a655
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Filesize
83KB
MD55bebc32957922fe20e927d5c4637f100
SHA1a94ea93ee3c3d154f4f90b5c2fe072cc273376b3
SHA2563ed0e5058d370fb14aa5469d81f96c5685559c054917c7280dd4125f21d25f62
SHA512afbe80a73ee9bd63d9ffa4628273019400a75f75454667440f43beb253091584bf9128cbb78ae7b659ce67a5faefdba726edb37987a4fe92f082d009d523d5d6
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Filesize
251KB
MD5492c0c36d8ed1b6ca2117869a09214da
SHA1b741cae3e2c9954e726890292fa35034509ef0f6
SHA256b8221d1c9e2c892dd6227a6042d1e49200cd5cb82adbd998e4a77f4ee0e9abf1
SHA512b8f1c64ad94db0252d96082e73a8632412d1d73fb8095541ee423df6f00bc417a2b42c76f15d7e014e27baae0ef50311c3f768b1560db005a522373f442e4be0
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Filesize
64KB
MD5da02cefd8151ecb83f697e3bd5280775
SHA11c5d0437eb7e87842fde55241a5f0ca7f0fc25e7
SHA256fd77a5756a17ec0788989f73222b0e7334dd4494b8c8647b43fe554cf3cfb354
SHA512a13bc5c481730f48808905f872d92cb8729cc52cfb4d5345153ce361e7d6586603a58b964a1ebfd77dd6222b074e5dcca176eaaefecc39f75496b1f8387a2283
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Filesize
156KB
MD5195defe58a7549117e06a57029079702
SHA13795b02803ca37f399d8883d30c0aa38ad77b5f2
SHA2567bf9ff61babebd90c499a8ed9b62141f947f90d87e0bbd41a12e99d20e06954a
SHA512c47a9b1066dd9744c51ed80215bd9645aab6cc9d6a3f9df99f618e3dd784f6c7ce6f53eabe222cf134ee649250834193d5973e6e88f8a93151886537c62e2e2b
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Filesize
81KB
MD5dd8ff2a3946b8e77264e3f0011d27704
SHA1a2d84cfc4d6410b80eea4b25e8efc08498f78990
SHA256b102522c23dac2332511eb3502466caf842d6bcd092fbc276b7b55e9cc01b085
SHA512958224a974a3449bcfb97faab70c0a5b594fa130adc0c83b4e15bdd7aab366b58d94a4a9016cb662329ea47558645acd0e0cc6df54f12a81ac13a6ec0c895cd8
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Filesize
1.3MB
MD555df3c98d18ec80bc37a6682ba0abcbb
SHA1e3bf60cfecfee2473d4e0b07057af3c27afa6567
SHA256d8de678c0ac0cecb7be261bda75511c47e6a565f0c6260eacf240c7c5039753b
SHA51226368c9187155ee83c450bfc792938a2908c473ba60330ce95bcc3f780390043879bbff3949bd4a25b38343eac3c5c9ba709267959109c9c99a229809c97f3bd
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Filesize
5.0MB
MD5e547cf6d296a88f5b1c352c116df7c0c
SHA1cafa14e0367f7c13ad140fd556f10f320a039783
SHA25605fe080eab7fc535c51e10c1bd76a2f3e6217f9c91a25034774588881c3f99de
SHA5129f42edf04c7af350a00fa4fdf92b8e2e6f47ab9d2d41491985b20cd0adde4f694253399f6a88f4bdd765c4f49792f25fb01e84ec03fd5d0be8bb61773d77d74d
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Filesize
175KB
MD55b068d0a62619c9dbefda88cfb4a85e0
SHA1b9fc2b451046f5496d80f59bb09089a1cf28c580
SHA25649d2aa8a7cb811a0f3d4c00ed909a25bcdbb6a585af75f34fe2b92da1ac6a234
SHA5126e6e949ae2691103cdcf79d57551714f9506c768f427d722115157efaa5e5a812e992f43ef1627e2316c0218142179100444df4e514195151fde52e407edaa23
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Filesize
6.6MB
MD5d521654d889666a0bc753320f071ef60
SHA15fd9b90c5d0527e53c199f94bad540c1e0985db6
SHA25621700f0bad5769a1b61ea408dc0a140ffd0a356a774c6eb0cc70e574b929d2e2
SHA5127a726835423a36de80fb29ef65dfe7150bd1567cac6f3569e24d9fe091496c807556d0150456429a3d1a6fd2ed0b8ae3128ea3b8674c97f42ce7c897719d2cd3
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Filesize
30KB
MD5d0cc9fc9a0650ba00bd206720223493b
SHA1295bc204e489572b74cc11801ed8590f808e1618
SHA256411d6f538bdbaf60f1a1798fa8aa7ed3a4e8fcc99c9f9f10d21270d2f3742019
SHA512d3ebcb91d1b8aa247d50c2c4b2ba1bf3102317c593cbf6c63883e8bf9d6e50c0a40f149654797abc5b4f17aee282ddd972a8cd9189bfcd5b9cec5ab9c341e20b
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Filesize
1.1MB
MD5cc8142bedafdfaa50b26c6d07755c7a6
SHA10fcab5816eaf7b138f22c29c6d5b5f59551b39fe
SHA256bc2cf23b7b7491edcf03103b78dbaf42afd84a60ea71e764af9a1ddd0fe84268
SHA512c3b0c1dbe5bf159ab7706f314a75a856a08ebb889f53fe22ab3ec92b35b5e211edab3934df3da64ebea76f38eb9bfc9504db8d7546a36bc3cabe40c5599a9cbd
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C:\Users\Admin\AppData\Local\f2150a626e1ebf5832ab3f5e7e988505\Admin@LMBIBFCX_en-US\Browsers\Firefox\Bookmarks.txt
Filesize105B
MD52e9d094dda5cdc3ce6519f75943a4ff4
SHA15d989b4ac8b699781681fe75ed9ef98191a5096c
SHA256c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
SHA512d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
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C:\Users\Admin\AppData\Local\f2150a626e1ebf5832ab3f5e7e988505\Admin@LMBIBFCX_en-US\System\Process.txt
Filesize4KB
MD5d16cf459bc9ac355a7ac3d23374b0454
SHA10a7fb6f4704535f443e07659b33ac52647ebd6ed
SHA256bc990c4ddc6d0c0605cd04b5664d6887a5f95f32921ac35c2e9ce79ae0de0a17
SHA5120d7f2ad3cec255ddc488399ff1f15475ef9809a9e2a33b8607cfb45745dc466bd47602eb2afa195dd067edd8318c7020fd4a10a2d92365ade6ec01af6743b5bc