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Analysis
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max time kernel
170s -
max time network
175s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
29/11/2022, 03:24
Static task
static1
Behavioral task
behavioral1
Sample
dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe
Resource
win7-20220812-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe
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Size
212KB
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MD5
5dfa956c8d81c70898e1fc7a2b623cbb
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SHA1
24261d8dcbec5a2c6772d11ad0fd83809ba38108
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SHA256
dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c
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SHA512
b7ca31252de3a6af222043769a4067215a5b21d996438ff100bbb693edc9d30450159c7ac7bed7fd4bbe94ceab4a45d175186b201688590752b7f5f808527eb3
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SSDEEP
6144:yaabJI19s7ZWfByqIFBp5lK6guLBR80W18ydI:ya4Ins7ZWfByqIbp5XLBW028yd
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" fiihu.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe -
Executes dropped EXE 1 IoCs
pid Process 3276 fiihu.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /n" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /d" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /k" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /i" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /l" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /r" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /c" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /t" dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /x" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /b" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /e" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /v" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /q" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /a" fiihu.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /z" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /o" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /j" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /p" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /s" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /w" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /h" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /g" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /u" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /y" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /f" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /t" fiihu.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fiihu = "C:\\Users\\Admin\\fiihu.exe /m" fiihu.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum fiihu.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 fiihu.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3940 dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe 3940 dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe 3276 fiihu.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3940 dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe 3276 fiihu.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3940 wrote to memory of 3276 3940 dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe 80 PID 3940 wrote to memory of 3276 3940 dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe 80 PID 3940 wrote to memory of 3276 3940 dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe"C:\Users\Admin\AppData\Local\Temp\dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3940 -
C:\Users\Admin\fiihu.exe"C:\Users\Admin\fiihu.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:3276
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:5092
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
212KB
MD55dfa956c8d81c70898e1fc7a2b623cbb
SHA124261d8dcbec5a2c6772d11ad0fd83809ba38108
SHA256dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c
SHA512b7ca31252de3a6af222043769a4067215a5b21d996438ff100bbb693edc9d30450159c7ac7bed7fd4bbe94ceab4a45d175186b201688590752b7f5f808527eb3
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Filesize
212KB
MD55dfa956c8d81c70898e1fc7a2b623cbb
SHA124261d8dcbec5a2c6772d11ad0fd83809ba38108
SHA256dc7f99a58817d499b43ecb193f1faca12a0667a092bd219c5e3ad4d8a7ccb49c
SHA512b7ca31252de3a6af222043769a4067215a5b21d996438ff100bbb693edc9d30450159c7ac7bed7fd4bbe94ceab4a45d175186b201688590752b7f5f808527eb3