Analysis
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max time kernel
150s -
max time network
156s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
10-10-2024 10:48
Static task
static1
Behavioral task
behavioral1
Sample
F2LNJ_loader.exe
Resource
win7-20241010-en
General
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Target
F2LNJ_loader.exe
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Size
5.4MB
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MD5
916f7dea6831485387d70b0891455e65
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SHA1
176e995cc2584d7c9703b2beee0994dcc4be91d5
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SHA256
c47e49026afb1d2c8708f1e36510ad862eb288c7ac48e9c4bebfbd051475fbc2
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SHA512
ba5c40e6416a53c88f5b5d7e0ce346956ef6bd0aebed355df8070ebb71dda78125945fe1cdca87caa29a2b5d98c437bafd228396a516c91f764256e54556f0e4
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SSDEEP
98304:m52dhBZTv0sGVD+Oq7j3JQ9oQSqEac8JgZSeC3FSDsa7V578kXHoujwCl1um:+sBtGVD+OoUq8+SZ1hAVpRRjw6Q
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1260642804414156891/hKfLDYiwORnJS0u7NEs9WPwqTyOYiJyHsbqndD7MezE-rhVSLHFDRhBZ_hNqb3v9ZoeE
Extracted
njrat
0.7d
HacKed
147.185.221.20:49236
6a8a3b6e5450a823d542e748a454aa4c
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reg_key
6a8a3b6e5450a823d542e748a454aa4c
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splitter
|'|'|
Extracted
xworm
5.0
testarosa.duckdns.org:7110
5ZpeoOe6AtQfr6wU
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Install_directory
%AppData%
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install_file
Ondrive.exe
Signatures
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Detect Umbral payload 2 IoCs
resource yara_rule behavioral1/files/0x0014000000015e9a-11.dat family_umbral behavioral1/memory/2644-14-0x0000000000FC0000-0x0000000001000000-memory.dmp family_umbral -
Detect Xworm Payload 4 IoCs
resource yara_rule behavioral1/files/0x000700000001658d-32.dat family_xworm behavioral1/memory/1520-38-0x0000000000190000-0x00000000001A0000-memory.dmp family_xworm behavioral1/memory/2688-176-0x0000000000C50000-0x0000000000C60000-memory.dmp family_xworm behavioral1/memory/1088-178-0x00000000003F0000-0x0000000000400000-memory.dmp family_xworm -
Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 2892 powershell.exe 1300 powershell.exe 648 powershell.exe 928 powershell.exe -
Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2948 netsh.exe -
Executes dropped EXE 9 IoCs
pid Process 2836 Server.exe 2644 Maple.exe 2664 Server.exe 2796 loader.exe 1520 conhost.exe 1272 loader.exe 1832 server.exe 2688 Ondrive.exe 1088 Ondrive.exe -
Loads dropped DLL 5 IoCs
pid Process 2492 F2LNJ_loader.exe 2648 Process not Found 2796 loader.exe 1272 loader.exe 2664 Server.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\6a8a3b6e5450a823d542e748a454aa4c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\6a8a3b6e5450a823d542e748a454aa4c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe -
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 4 ip-api.com -
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 3 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 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 -
System Location Discovery: System Language Discovery 1 TTPs 3 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 Server.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language server.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1252 schtasks.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1520 conhost.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2892 powershell.exe 1300 powershell.exe 648 powershell.exe 928 powershell.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 1520 conhost.exe Token: SeDebugPrivilege 2644 Maple.exe Token: SeDebugPrivilege 2892 powershell.exe Token: SeIncreaseQuotaPrivilege 2596 wmic.exe Token: SeSecurityPrivilege 2596 wmic.exe Token: SeTakeOwnershipPrivilege 2596 wmic.exe Token: SeLoadDriverPrivilege 2596 wmic.exe Token: SeSystemProfilePrivilege 2596 wmic.exe Token: SeSystemtimePrivilege 2596 wmic.exe Token: SeProfSingleProcessPrivilege 2596 wmic.exe Token: SeIncBasePriorityPrivilege 2596 wmic.exe Token: SeCreatePagefilePrivilege 2596 wmic.exe Token: SeBackupPrivilege 2596 wmic.exe Token: SeRestorePrivilege 2596 wmic.exe Token: SeShutdownPrivilege 2596 wmic.exe Token: SeDebugPrivilege 2596 wmic.exe Token: SeSystemEnvironmentPrivilege 2596 wmic.exe Token: SeRemoteShutdownPrivilege 2596 wmic.exe Token: SeUndockPrivilege 2596 wmic.exe Token: SeManageVolumePrivilege 2596 wmic.exe Token: 33 2596 wmic.exe Token: 34 2596 wmic.exe Token: 35 2596 wmic.exe Token: SeIncreaseQuotaPrivilege 2596 wmic.exe Token: SeSecurityPrivilege 2596 wmic.exe Token: SeTakeOwnershipPrivilege 2596 wmic.exe Token: SeLoadDriverPrivilege 2596 wmic.exe Token: SeSystemProfilePrivilege 2596 wmic.exe Token: SeSystemtimePrivilege 2596 wmic.exe Token: SeProfSingleProcessPrivilege 2596 wmic.exe Token: SeIncBasePriorityPrivilege 2596 wmic.exe Token: SeCreatePagefilePrivilege 2596 wmic.exe Token: SeBackupPrivilege 2596 wmic.exe Token: SeRestorePrivilege 2596 wmic.exe Token: SeShutdownPrivilege 2596 wmic.exe Token: SeDebugPrivilege 2596 wmic.exe Token: SeSystemEnvironmentPrivilege 2596 wmic.exe Token: SeRemoteShutdownPrivilege 2596 wmic.exe Token: SeUndockPrivilege 2596 wmic.exe Token: SeManageVolumePrivilege 2596 wmic.exe Token: 33 2596 wmic.exe Token: 34 2596 wmic.exe Token: 35 2596 wmic.exe Token: SeDebugPrivilege 1300 powershell.exe Token: SeDebugPrivilege 648 powershell.exe Token: SeDebugPrivilege 928 powershell.exe Token: SeDebugPrivilege 1832 server.exe Token: 33 1832 server.exe Token: SeIncBasePriorityPrivilege 1832 server.exe Token: 33 1832 server.exe Token: SeIncBasePriorityPrivilege 1832 server.exe Token: 33 1832 server.exe Token: SeIncBasePriorityPrivilege 1832 server.exe Token: SeDebugPrivilege 2688 Ondrive.exe Token: 33 1832 server.exe Token: SeIncBasePriorityPrivilege 1832 server.exe Token: 33 1832 server.exe Token: SeIncBasePriorityPrivilege 1832 server.exe Token: 33 1832 server.exe Token: SeIncBasePriorityPrivilege 1832 server.exe Token: 33 1832 server.exe Token: SeIncBasePriorityPrivilege 1832 server.exe Token: 33 1832 server.exe Token: SeIncBasePriorityPrivilege 1832 server.exe -
Suspicious use of WriteProcessMemory 51 IoCs
description pid Process procid_target PID 2492 wrote to memory of 2836 2492 F2LNJ_loader.exe 30 PID 2492 wrote to memory of 2836 2492 F2LNJ_loader.exe 30 PID 2492 wrote to memory of 2836 2492 F2LNJ_loader.exe 30 PID 2492 wrote to memory of 2644 2492 F2LNJ_loader.exe 31 PID 2492 wrote to memory of 2644 2492 F2LNJ_loader.exe 31 PID 2492 wrote to memory of 2644 2492 F2LNJ_loader.exe 31 PID 2836 wrote to memory of 2664 2836 Server.exe 32 PID 2836 wrote to memory of 2664 2836 Server.exe 32 PID 2836 wrote to memory of 2664 2836 Server.exe 32 PID 2836 wrote to memory of 2664 2836 Server.exe 32 PID 2492 wrote to memory of 2796 2492 F2LNJ_loader.exe 33 PID 2492 wrote to memory of 2796 2492 F2LNJ_loader.exe 33 PID 2492 wrote to memory of 2796 2492 F2LNJ_loader.exe 33 PID 2836 wrote to memory of 1520 2836 Server.exe 35 PID 2836 wrote to memory of 1520 2836 Server.exe 35 PID 2836 wrote to memory of 1520 2836 Server.exe 35 PID 2796 wrote to memory of 1272 2796 loader.exe 36 PID 2796 wrote to memory of 1272 2796 loader.exe 36 PID 2796 wrote to memory of 1272 2796 loader.exe 36 PID 1520 wrote to memory of 2892 1520 conhost.exe 37 PID 1520 wrote to memory of 2892 1520 conhost.exe 37 PID 1520 wrote to memory of 2892 1520 conhost.exe 37 PID 2644 wrote to memory of 2596 2644 Maple.exe 39 PID 2644 wrote to memory of 2596 2644 Maple.exe 39 PID 2644 wrote to memory of 2596 2644 Maple.exe 39 PID 1520 wrote to memory of 1300 1520 conhost.exe 42 PID 1520 wrote to memory of 1300 1520 conhost.exe 42 PID 1520 wrote to memory of 1300 1520 conhost.exe 42 PID 1520 wrote to memory of 648 1520 conhost.exe 44 PID 1520 wrote to memory of 648 1520 conhost.exe 44 PID 1520 wrote to memory of 648 1520 conhost.exe 44 PID 1520 wrote to memory of 928 1520 conhost.exe 46 PID 1520 wrote to memory of 928 1520 conhost.exe 46 PID 1520 wrote to memory of 928 1520 conhost.exe 46 PID 2664 wrote to memory of 1832 2664 Server.exe 48 PID 2664 wrote to memory of 1832 2664 Server.exe 48 PID 2664 wrote to memory of 1832 2664 Server.exe 48 PID 2664 wrote to memory of 1832 2664 Server.exe 48 PID 1520 wrote to memory of 1252 1520 conhost.exe 49 PID 1520 wrote to memory of 1252 1520 conhost.exe 49 PID 1520 wrote to memory of 1252 1520 conhost.exe 49 PID 1832 wrote to memory of 2948 1832 server.exe 51 PID 1832 wrote to memory of 2948 1832 server.exe 51 PID 1832 wrote to memory of 2948 1832 server.exe 51 PID 1832 wrote to memory of 2948 1832 server.exe 51 PID 2620 wrote to memory of 2688 2620 taskeng.exe 54 PID 2620 wrote to memory of 2688 2620 taskeng.exe 54 PID 2620 wrote to memory of 2688 2620 taskeng.exe 54 PID 2620 wrote to memory of 1088 2620 taskeng.exe 55 PID 2620 wrote to memory of 1088 2620 taskeng.exe 55 PID 2620 wrote to memory of 1088 2620 taskeng.exe 55 -
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\F2LNJ_loader.exe"C:\Users\Admin\AppData\Local\Temp\F2LNJ_loader.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2492 -
C:\Users\Admin\AppData\Local\Temp\Server.exe"C:\Users\Admin\AppData\Local\Temp\Server.exe"2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2836 -
C:\Users\Admin\AppData\Roaming\Server.exe"C:\Users\Admin\AppData\Roaming\Server.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2664 -
C:\Users\Admin\AppData\Local\Temp\server.exe"C:\Users\Admin\AppData\Local\Temp\server.exe"4⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1832 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE5⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2948
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C:\Users\Admin\AppData\Roaming\conhost.exe"C:\Users\Admin\AppData\Roaming\conhost.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1520 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\conhost.exe'4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2892
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'conhost.exe'4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1300
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Ondrive.exe'4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:648
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Ondrive.exe'4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:928
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Ondrive" /tr "C:\Users\Admin\AppData\Roaming\Ondrive.exe"4⤵
- Scheduled Task/Job: Scheduled Task
PID:1252
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C:\Users\Admin\AppData\Local\Temp\Maple.exe"C:\Users\Admin\AppData\Local\Temp\Maple.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2644 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2596
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C:\Users\Admin\AppData\Local\Temp\loader.exe"C:\Users\Admin\AppData\Local\Temp\loader.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2796 -
C:\Users\Admin\AppData\Local\Temp\onefile_2796_133730308971442000\loader.exe"C:\Users\Admin\AppData\Local\Temp\loader.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1272
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C:\Windows\system32\taskeng.exetaskeng.exe {34928337-3BFA-4718-8852-9DC88331CA4A} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2620 -
C:\Users\Admin\AppData\Roaming\Ondrive.exeC:\Users\Admin\AppData\Roaming\Ondrive.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2688
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C:\Users\Admin\AppData\Roaming\Ondrive.exeC:\Users\Admin\AppData\Roaming\Ondrive.exe2⤵
- Executes dropped EXE
PID:1088
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
227KB
MD5550b445ad1a44d1f23f7155fae400db6
SHA1cb006a53156285fdef3a0b33a4a08f534cd3bab7
SHA256d223b3918e8bc3bab1d23fdc2e306be1c6587d3ab8f324fc377e37585387884e
SHA512909f31f24672ffc5542ac42f344eb6020bcdfdfac9ac13d5672fe7ed22e686b06385d15709f1f83b576b1dade591ad40eb429ef076d07f4597235cd95a679fa5
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Filesize
71KB
MD5f9b08bd21b40a938122b479095b7c70c
SHA1eb925e3927b83c20d8d24bdab2e587c10d6ac8cd
SHA256c96cde2e96021c266a202286d644ceb28543d6347e21006d72b29b8a72c505e8
SHA512fcc5784936b7f85a550883c472b99b5edfa7e5c6fd3872fd806b81c2ce1f195ca34342b230a89456066885579fe55aea46d91074ac08af192fbd04ea158473ee
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Filesize
8.5MB
MD57e528c7d750373f489ed3983d28a5279
SHA1805d666d7c3f98b0f2f21f8ded1ebc801bb87028
SHA2567b025b56f3cec113e0569dfa37fa593f64d15c42116d321452500c03df105b8e
SHA51240b4809678c6b17fcd389038464d32752058e60ed446d941698fee561641e740652bd305e2a6fe80cdd6171807fe6fbc22b99e4eaccd4c699acaca39b7328ca3
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Filesize
5.5MB
MD59a24c8c35e4ac4b1597124c1dcbebe0f
SHA1f59782a4923a30118b97e01a7f8db69b92d8382a
SHA256a0cf640e756875c25c12b4a38ba5f2772e8e512036e2ac59eb8567bf05ffbfb7
SHA5129d9336bf1f0d3bc9ce4a636a5f4e52c5f9487f51f00614fc4a34854a315ce7ea8be328153812dbd67c45c75001818fa63317eba15a6c9a024fa9f2cab163165b
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize7KB
MD5d9d42f7d41ade2ed3deb48382f29e004
SHA1a3229b3feeaa527632d0057326bfdb3caba8993e
SHA256df93d0491fae83e967fc9be59fd6b8469033b306233100334997e48140d35957
SHA512ff4414484457c608883fb8f06182f247f8eda1d7a87c6ecf347f05c34165d03dc44d2c7952b7671c907cd820b154344750eb846c876ba426e8cf093678cc02b1
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Filesize
23KB
MD532fe01ccb93b0233503d0aaaa451f7b2
SHA158e5a63142150e8fb175dbb4dedea2ce405d7db0
SHA2566988ee719a54c93a89303dcff277c62ae4890274cc45f074bc7effde315fbf43
SHA51276945f23a49d594e325d80ffc0570341044ac0b97bd889c92f90bc56d3cdff5c1b29178be4f157c8c1bb9ce7cc311765309f2e6f7b08b24e7acf983ea67635a6
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Filesize
37KB
MD5b37dd1a1f0507baf993471ae1b7a314c
SHA19aff9d71492ffff8d51f8e8d67f5770755899882
SHA256e58e8918a443c0061add029f8f211f6551a130202195cc2b9b529ea72553e0bc
SHA512ac76d5b10540eb292341f30c7abfd81f03be65f6655c814aba6ac6a0ecf4f0f2c34c3b8e63ceef8c4579f98b7459e51b9fdd30d601c6d1930860ab7c154da460
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Filesize
5.3MB
MD5e630d72436e3dc1be7763de7f75b7adf
SHA140e07b22ab8b69e6827f90e20aeac35757899a23
SHA25659818142f41895d3cadf7bee0124b392af3473060f00b9548daa3a224223993e
SHA51282f0be15e2736447fae7d9a313a8a81a2c6e6ca617539ff8bf3fa0d2fe93d96e68afea6964e96e9dd671ba4090ddbc8a759c9b68f10e24a7fb847fe2c9825a83