Analysis
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max time kernel
189s -
max time network
192s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
02-10-2022 00:46
Static task
static1
Behavioral task
behavioral1
Sample
d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe
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Size
220KB
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MD5
572934bbe281f291a473824c691546db
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SHA1
17c21ce323d0e5531629e6f9df0ef308b48d5a61
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SHA256
d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43
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SHA512
833840cca27c906483fa58b7b9d26f05a20ead960e626e0af5fd38d4902069b55855eca42031ae3ff4737be9f0ab3e35e2538a33a9432267126289dbe9ac25a0
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SSDEEP
3072:SqOufkr8YUL4qx9RIHgil3UuhSa3U3dD8d6Oy+MIrnj3J+NBy:jOOko15x9SHVeOj0k
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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" riecey.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe -
Executes dropped EXE 1 IoCs
pid Process 4756 riecey.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /b" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /v" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /y" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /q" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /j" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /n" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /h" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /a" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /g" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /s" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /o" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /w" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /x" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /u" riecey.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /i" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /r" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /i" d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /c" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /l" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /d" riecey.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /k" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /t" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /z" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /p" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /f" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /e" riecey.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riecey = "C:\\Users\\Admin\\riecey.exe /m" riecey.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3544 d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe 3544 d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe 4756 riecey.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3544 d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe 4756 riecey.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3544 wrote to memory of 4756 3544 d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe 81 PID 3544 wrote to memory of 4756 3544 d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe 81 PID 3544 wrote to memory of 4756 3544 d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe"C:\Users\Admin\AppData\Local\Temp\d7b6ebd55e2cff569dd8cda9c4da9a4f8a4b8e61fc771b93467900ce58284c43.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3544 -
C:\Users\Admin\riecey.exe"C:\Users\Admin\riecey.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:4756
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
220KB
MD5aff329b6275fe4064a2f946357bfd251
SHA1b4009d9581629593e892aaffc6047953841e307c
SHA2560c22ccf9b2874f485a97f7d64fa6c53d7a00cb12a10516a4e60c2ce8e50685e0
SHA512d7c3cf7771d382383d8fe286b6d7d96d5bfab29eb52d6f0f77bd7d61e3f3dcac935750548740ee268b07a94575c7766773ed891c60cb9a786be155ba94b2d6fd
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Filesize
220KB
MD5aff329b6275fe4064a2f946357bfd251
SHA1b4009d9581629593e892aaffc6047953841e307c
SHA2560c22ccf9b2874f485a97f7d64fa6c53d7a00cb12a10516a4e60c2ce8e50685e0
SHA512d7c3cf7771d382383d8fe286b6d7d96d5bfab29eb52d6f0f77bd7d61e3f3dcac935750548740ee268b07a94575c7766773ed891c60cb9a786be155ba94b2d6fd