Analysis
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max time kernel
26s -
max time network
24s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
18-08-2024 20:10
Static task
static1
Behavioral task
behavioral1
Sample
EXMservice.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
EXMservice.exe
Resource
win10v2004-20240802-en
General
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Target
EXMservice.exe
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Size
12.0MB
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MD5
f189114f5f8504a1aeb97a90e71ea429
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SHA1
a2d029f042000b7e3ec175e1e365d9bf20396092
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SHA256
31709442f1ff903433dec01461829a0c05b62f0e7cab81f2efcd1a0b0845d748
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SHA512
5f939df2c5bc1f3c4f5b1fd835a7ab882d49fed5c5ebd7a41deba37b3f7ba423d194ccaad39aa3032d9454570d8863bdb93cca9c99ee12cf64dbc478b2dfcbbb
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SSDEEP
6144:pcBqNKm+UQqA9uAXTNpWKc9SNweSuRQjbvmpFETPMK3nYpbLYhZ+:pkCKm+UQqAP7WKc9SNavmpOTZ3WuM
Malware Config
Extracted
xworm
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Install_directory
%ProgramData%
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install_file
MicrosoftEdgeUpdate.exe
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pastebin_url
https://pastebin.com/raw/ZnhxAV6a
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telegram
https://api.telegram.org/bot6701075763:AAGkvv2CpqBxGihH8FtOkSA7Uxy35GZpAFI/sendMessage?chat_id=5991331733
Extracted
asyncrat
Default
127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
https://api.telegram.org/bot6701075763:AAGkvv2CpqBxGihH8FtOkSA7Uxy35GZpAFI/sendMessage?chat_id=5991331733
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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Detect Xworm Payload 2 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\MicrosoftEdgeUpdate.exe family_xworm behavioral1/memory/2740-12-0x0000000000E30000-0x0000000000E4C000-memory.dmp family_xworm -
StormKitty
StormKitty is an open source info stealer written in C#.
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StormKitty payload 2 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\svchost.exe family_stormkitty behavioral1/memory/2660-14-0x0000000000B50000-0x0000000000B8E000-memory.dmp family_stormkitty -
Async RAT payload 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\svchost.exe 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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Drops startup file 2 IoCs
Processes:
MicrosoftEdgeUpdate.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MicrosoftEdgeUpdate.lnk MicrosoftEdgeUpdate.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MicrosoftEdgeUpdate.lnk MicrosoftEdgeUpdate.exe -
Executes dropped EXE 2 IoCs
Processes:
MicrosoftEdgeUpdate.exesvchost.exepid process 2740 MicrosoftEdgeUpdate.exe 2660 svchost.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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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
MicrosoftEdgeUpdate.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicrosoftEdgeUpdate = "C:\\ProgramData\\MicrosoftEdgeUpdate.exe" MicrosoftEdgeUpdate.exe -
Drops desktop.ini file(s) 8 IoCs
Processes:
svchost.exedescription ioc process File created C:\Users\Admin\AppData\Local\83223e6be1558eaa13edadb5e50b2c62\Admin@ELZYPTFV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\83223e6be1558eaa13edadb5e50b2c62\Admin@ELZYPTFV_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Local\83223e6be1558eaa13edadb5e50b2c62\Admin@ELZYPTFV_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\83223e6be1558eaa13edadb5e50b2c62\Admin@ELZYPTFV_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Local\83223e6be1558eaa13edadb5e50b2c62\Admin@ELZYPTFV_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\83223e6be1558eaa13edadb5e50b2c62\Admin@ELZYPTFV_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Local\83223e6be1558eaa13edadb5e50b2c62\Admin@ELZYPTFV_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\83223e6be1558eaa13edadb5e50b2c62\Admin@ELZYPTFV_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini svchost.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 6 IoCs
Processes:
flow ioc 17 pastebin.com 19 pastebin.com 4 pastebin.com 5 pastebin.com 7 pastebin.com 15 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.
Processes:
flow ioc 8 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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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.
Processes:
netsh.exenetsh.exedescription 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.
Processes:
cmd.exechcp.comnetsh.exesvchost.execmd.exechcp.comfindstr.exenetsh.exedescription 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 netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.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 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.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
svchost.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier svchost.exe Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 svchost.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 12 IoCs
Processes:
svchost.exetaskmgr.exepid process 2660 svchost.exe 2660 svchost.exe 2660 svchost.exe 2660 svchost.exe 2660 svchost.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
taskmgr.exepid process 2176 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
MicrosoftEdgeUpdate.exesvchost.exetaskmgr.exedescription pid process Token: SeDebugPrivilege 2740 MicrosoftEdgeUpdate.exe Token: SeDebugPrivilege 2660 svchost.exe Token: SeDebugPrivilege 2176 taskmgr.exe -
Suspicious use of FindShellTrayWindow 33 IoCs
Processes:
taskmgr.exepid process 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe -
Suspicious use of SendNotifyMessage 33 IoCs
Processes:
taskmgr.exepid process 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe 2176 taskmgr.exe -
Suspicious use of WriteProcessMemory 38 IoCs
Processes:
EXMservice.exeMicrosoftEdgeUpdate.exesvchost.execmd.execmd.exedescription pid process target process PID 2416 wrote to memory of 2740 2416 EXMservice.exe MicrosoftEdgeUpdate.exe PID 2416 wrote to memory of 2740 2416 EXMservice.exe MicrosoftEdgeUpdate.exe PID 2416 wrote to memory of 2740 2416 EXMservice.exe MicrosoftEdgeUpdate.exe PID 2416 wrote to memory of 2660 2416 EXMservice.exe svchost.exe PID 2416 wrote to memory of 2660 2416 EXMservice.exe svchost.exe PID 2416 wrote to memory of 2660 2416 EXMservice.exe svchost.exe PID 2416 wrote to memory of 2660 2416 EXMservice.exe svchost.exe PID 2740 wrote to memory of 2596 2740 MicrosoftEdgeUpdate.exe schtasks.exe PID 2740 wrote to memory of 2596 2740 MicrosoftEdgeUpdate.exe schtasks.exe PID 2740 wrote to memory of 2596 2740 MicrosoftEdgeUpdate.exe schtasks.exe PID 2660 wrote to memory of 2472 2660 svchost.exe cmd.exe PID 2660 wrote to memory of 2472 2660 svchost.exe cmd.exe PID 2660 wrote to memory of 2472 2660 svchost.exe cmd.exe PID 2660 wrote to memory of 2472 2660 svchost.exe cmd.exe PID 2472 wrote to memory of 1716 2472 cmd.exe chcp.com PID 2472 wrote to memory of 1716 2472 cmd.exe chcp.com PID 2472 wrote to memory of 1716 2472 cmd.exe chcp.com PID 2472 wrote to memory of 1716 2472 cmd.exe chcp.com PID 2472 wrote to memory of 2792 2472 cmd.exe netsh.exe PID 2472 wrote to memory of 2792 2472 cmd.exe netsh.exe PID 2472 wrote to memory of 2792 2472 cmd.exe netsh.exe PID 2472 wrote to memory of 2792 2472 cmd.exe netsh.exe PID 2472 wrote to memory of 2620 2472 cmd.exe findstr.exe PID 2472 wrote to memory of 2620 2472 cmd.exe findstr.exe PID 2472 wrote to memory of 2620 2472 cmd.exe findstr.exe PID 2472 wrote to memory of 2620 2472 cmd.exe findstr.exe PID 2660 wrote to memory of 2204 2660 svchost.exe cmd.exe PID 2660 wrote to memory of 2204 2660 svchost.exe cmd.exe PID 2660 wrote to memory of 2204 2660 svchost.exe cmd.exe PID 2660 wrote to memory of 2204 2660 svchost.exe cmd.exe PID 2204 wrote to memory of 2392 2204 cmd.exe chcp.com PID 2204 wrote to memory of 2392 2204 cmd.exe chcp.com PID 2204 wrote to memory of 2392 2204 cmd.exe chcp.com PID 2204 wrote to memory of 2392 2204 cmd.exe chcp.com PID 2204 wrote to memory of 1952 2204 cmd.exe netsh.exe PID 2204 wrote to memory of 1952 2204 cmd.exe netsh.exe PID 2204 wrote to memory of 1952 2204 cmd.exe netsh.exe PID 2204 wrote to memory of 1952 2204 cmd.exe netsh.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\EXMservice.exe"C:\Users\Admin\AppData\Local\Temp\EXMservice.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2416 -
C:\Users\Admin\AppData\Local\MicrosoftEdgeUpdate.exe"C:\Users\Admin\AppData\Local\MicrosoftEdgeUpdate.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2740 -
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "MicrosoftEdgeUpdate" /tr "C:\ProgramData\MicrosoftEdgeUpdate.exe"3⤵
- Scheduled Task/Job: Scheduled Task
PID:2596
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C:\Users\Admin\AppData\Local\svchost.exe"C:\Users\Admin\AppData\Local\svchost.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:2660 -
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:2472 -
C:\Windows\SysWOW64\chcp.comchcp 650014⤵
- System Location Discovery: System Language Discovery
PID:1716
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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:2792
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C:\Windows\SysWOW64\findstr.exefindstr All4⤵
- System Location Discovery: System Language Discovery
PID:2620
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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:2204 -
C:\Windows\SysWOW64\chcp.comchcp 650014⤵
- System Location Discovery: System Language Discovery
PID:2392
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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:1952
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2176
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Credential 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
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
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Filesize
86KB
MD551cdbf80fae38e82aa1c6ac3c86081a8
SHA1b4a00a40555f6d7655a80ef0aaab920c35994743
SHA25670e63eb524c1d6dbe4f4fa276d3f4d2756108cb5a4f4ebb9a6264fcbd5d4a73b
SHA512aa69c54770a36eba26b1408aaf0338975b4bd1b3dd118de71d81882671c86fc6b0c80567c67ffb6cd3c1a3f98ac02fe6ac5d9495a03531bcff1ecc61574c85e1
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Filesize
225KB
MD58008775094d446eaed43a423cd8a26f9
SHA14b8ef16e4a70fed23dc20cc5e27566df1e06af04
SHA25648a06f8dbe0c56894b38bb3489c8ed5243d246328c512ee265bc31de441b5e1f
SHA5126d9f2dca0d9032702971b339b7df65efab1c95d76e89044cf36ed43ef3116d21d1203d1561bd5fb4bd838d4df3dfbd240e2c89b715400f7a89037a3757326792