Analysis
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max time kernel
298s -
max time network
297s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
15-11-2022 05:30
Static task
static1
Behavioral task
behavioral1
Sample
nitro.exe
Resource
win10-20220812-en
windows10-1703-x64
18 signatures
300 seconds
Behavioral task
behavioral2
Sample
nitro.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
11 signatures
300 seconds
General
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Target
nitro.exe
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Size
197KB
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MD5
5c3f73f74ff01937543395e7c97af556
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SHA1
81ea3ba54b1100945c15bdabf4d49b25f27ed13d
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SHA256
10f30e000c7500ef9ac1116ca3022f03a50700ce39a3f6f76c2b6202bcf14760
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SHA512
a857a2e587a6c4dc62d6c3ce43290e1ed62e1a8e46164a77c967bd336693769ccbae22e58c908dfa91a82065b01f19b09b6825424c834e832d3983f384f2541f
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SSDEEP
3072:zgcC1rbu+kSthtDvZMMke9Lk7fQLO7VpBNj3c0fTrEC2VFejIYe:zC1rbfkSthtDZanqOZ1THiFwI
Score
10/10
Malware Config
Signatures
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Nitro
A ransomware that demands Discord nitro gift codes to decrypt files.
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Modifies extensions of user files 11 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File created C:\Users\Admin\Pictures\StepMeasure.tiff.lockedup nitro.exe File created C:\Users\Admin\Pictures\ConfirmRename.png.lockedup nitro.exe File created C:\Users\Admin\Pictures\ConvertFromApprove.tiff.lockedup nitro.exe File opened for modification C:\Users\Admin\Pictures\ConvertFromApprove.tiff nitro.exe File created C:\Users\Admin\Pictures\MoveReset.png.lockedup nitro.exe File created C:\Users\Admin\Pictures\SubmitConvert.raw.lockedup nitro.exe File created C:\Users\Admin\Pictures\UnlockWrite.png.lockedup nitro.exe File created C:\Users\Admin\Pictures\FindBlock.crw.lockedup nitro.exe File created C:\Users\Admin\Pictures\FormatRemove.tif.lockedup nitro.exe File created C:\Users\Admin\Pictures\ResolveCompare.raw.lockedup nitro.exe File opened for modification C:\Users\Admin\Pictures\StepMeasure.tiff nitro.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
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\nitro.exe\"" nitro.exe -
Drops desktop.ini file(s) 5 IoCs
description ioc Process File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini nitro.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini nitro.exe File opened for modification C:\Users\Admin\Documents\desktop.ini nitro.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini nitro.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini nitro.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 7 api.ipify.org 9 api.ipify.org -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png" nitro.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3040 nitro.exe 3040 nitro.exe -
Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeDebugPrivilege 3040 nitro.exe Token: SeIncreaseQuotaPrivilege 4188 WMIC.exe Token: SeSecurityPrivilege 4188 WMIC.exe Token: SeTakeOwnershipPrivilege 4188 WMIC.exe Token: SeLoadDriverPrivilege 4188 WMIC.exe Token: SeSystemProfilePrivilege 4188 WMIC.exe Token: SeSystemtimePrivilege 4188 WMIC.exe Token: SeProfSingleProcessPrivilege 4188 WMIC.exe Token: SeIncBasePriorityPrivilege 4188 WMIC.exe Token: SeCreatePagefilePrivilege 4188 WMIC.exe Token: SeBackupPrivilege 4188 WMIC.exe Token: SeRestorePrivilege 4188 WMIC.exe Token: SeShutdownPrivilege 4188 WMIC.exe Token: SeDebugPrivilege 4188 WMIC.exe Token: SeSystemEnvironmentPrivilege 4188 WMIC.exe Token: SeRemoteShutdownPrivilege 4188 WMIC.exe Token: SeUndockPrivilege 4188 WMIC.exe Token: SeManageVolumePrivilege 4188 WMIC.exe Token: 33 4188 WMIC.exe Token: 34 4188 WMIC.exe Token: 35 4188 WMIC.exe Token: 36 4188 WMIC.exe Token: SeIncreaseQuotaPrivilege 4188 WMIC.exe Token: SeSecurityPrivilege 4188 WMIC.exe Token: SeTakeOwnershipPrivilege 4188 WMIC.exe Token: SeLoadDriverPrivilege 4188 WMIC.exe Token: SeSystemProfilePrivilege 4188 WMIC.exe Token: SeSystemtimePrivilege 4188 WMIC.exe Token: SeProfSingleProcessPrivilege 4188 WMIC.exe Token: SeIncBasePriorityPrivilege 4188 WMIC.exe Token: SeCreatePagefilePrivilege 4188 WMIC.exe Token: SeBackupPrivilege 4188 WMIC.exe Token: SeRestorePrivilege 4188 WMIC.exe Token: SeShutdownPrivilege 4188 WMIC.exe Token: SeDebugPrivilege 4188 WMIC.exe Token: SeSystemEnvironmentPrivilege 4188 WMIC.exe Token: SeRemoteShutdownPrivilege 4188 WMIC.exe Token: SeUndockPrivilege 4188 WMIC.exe Token: SeManageVolumePrivilege 4188 WMIC.exe Token: 33 4188 WMIC.exe Token: 34 4188 WMIC.exe Token: 35 4188 WMIC.exe Token: 36 4188 WMIC.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3040 wrote to memory of 4952 3040 nitro.exe 82 PID 3040 wrote to memory of 4952 3040 nitro.exe 82 PID 3040 wrote to memory of 4952 3040 nitro.exe 82 PID 4952 wrote to memory of 4188 4952 cmd.exe 84 PID 4952 wrote to memory of 4188 4952 cmd.exe 84 PID 4952 wrote to memory of 4188 4952 cmd.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\nitro.exe"C:\Users\Admin\AppData\Local\Temp\nitro.exe"1⤵
- Modifies extensions of user files
- Adds Run key to start application
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:4952 -
C:\Windows\SysWOW64\Wbem\WMIC.exewmic csproduct get uuid3⤵
- Suspicious use of AdjustPrivilegeToken
PID:4188
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