Analysis
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max time kernel
147s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
21-06-2024 23:04
Behavioral task
behavioral1
Sample
Nitro Generator.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
Nitro Generator.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
Nitro Generator.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral4
Sample
Nitro Generator.exe
Resource
win11-20240419-en
General
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Target
Nitro Generator.exe
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Size
77KB
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MD5
8bbf53c41f2625a3c4e608ad13cb2c55
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SHA1
3335287d42f6e674eb1d4465949e02d262bb8391
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SHA256
ae5a9dec7624bf30d8b8f9659dd6969973969a88933790fedff2f5717745e299
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SHA512
9c568dff7a8cbeb26997fdb17c7cc1c2a1fc3d060cf83fdbf1a5b994da8e04cf2e03a2f6a5406005d8edd77d3a497617f89c9cc2575b76c0ac0f0ceef97b60ec
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SSDEEP
1536:KRF0u1pqSjRVjnnsT5zYYPwRIH7I7AFbgwOLYP0og1KMwEnO8oBoRF:Kz0KprsT5zYY+IH7I7AFbgTK0omFjnOI
Malware Config
Extracted
xworm
runderscore00-25851.portmap.host:25851
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Install_directory
%ProgramData%
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install_file
USB.exe
Signatures
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Detect Xworm Payload 2 IoCs
Processes:
resource yara_rule behavioral3/memory/1120-0-0x0000000000980000-0x000000000099A000-memory.dmp family_xworm C:\ProgramData\svchost family_xworm -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Nitro Generator.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation Nitro Generator.exe -
Drops startup file 2 IoCs
Processes:
Nitro Generator.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk Nitro Generator.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk Nitro Generator.exe -
Executes dropped EXE 2 IoCs
Processes:
svchostsvchostpid process 1152 svchost 1540 svchost -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
Nitro Generator.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost" Nitro Generator.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.
Processes:
flow ioc 2 ip-api.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 1 IoCs
Processes:
Nitro Generator.exepid process 1120 Nitro Generator.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
Nitro Generator.exesvchostsvchostdescription pid process Token: SeDebugPrivilege 1120 Nitro Generator.exe Token: SeDebugPrivilege 1120 Nitro Generator.exe Token: SeDebugPrivilege 1152 svchost Token: SeDebugPrivilege 1540 svchost -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Nitro Generator.exepid process 1120 Nitro Generator.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
Nitro Generator.exedescription pid process target process PID 1120 wrote to memory of 4912 1120 Nitro Generator.exe schtasks.exe PID 1120 wrote to memory of 4912 1120 Nitro Generator.exe schtasks.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\Nitro Generator.exe"C:\Users\Admin\AppData\Local\Temp\Nitro Generator.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1120 -
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost"2⤵
- Scheduled Task/Job: Scheduled Task
PID:4912
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C:\ProgramData\svchostC:\ProgramData\svchost1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1152
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C:\ProgramData\svchostC:\ProgramData\svchost1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1540
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
77KB
MD58bbf53c41f2625a3c4e608ad13cb2c55
SHA13335287d42f6e674eb1d4465949e02d262bb8391
SHA256ae5a9dec7624bf30d8b8f9659dd6969973969a88933790fedff2f5717745e299
SHA5129c568dff7a8cbeb26997fdb17c7cc1c2a1fc3d060cf83fdbf1a5b994da8e04cf2e03a2f6a5406005d8edd77d3a497617f89c9cc2575b76c0ac0f0ceef97b60ec
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Filesize
654B
MD52ff39f6c7249774be85fd60a8f9a245e
SHA1684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA5121d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1