Analysis
- max time kernel
151s - max time network
133s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system - submitted
03/12/2022, 20:09
Static task
static1
Behavioral task
behavioral1
Sample
b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
- Target b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe
- Size 120KB
- Sample221203-yxcwpafd3v
- SHA256 b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36
- MD5 014ad5406f2a560d78b93ff30473be74
- SHA1 114910d5d100b5303c46c2e53aea38aef64c39c6
- SHA512 7068aceda707f7df05c2dc47dd56b64565a2036d5cd85314bad4056de12d6580ee732181af415e68d65cf692c4fe44c3a56e048cf8f8a85ed9b2b9ff1cdc3934
- SSDEEP 3072:xGScbpd1/l0izZF6yCenK2iGlefx8X1g:xGSI1pzZF44K3AAKX1
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" ymjah.exe - Executes dropped EXE 1 IoCs
pid Process 2156 ymjah.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe - Adds Run key to start application 2 TTPs 53 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /Z" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /d" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /I" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /T" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /U" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /m" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /g" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /j" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /i" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /l" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /x" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /Y" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /K" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /D" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /N" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /v" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /A" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /k" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /R" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /y" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /t" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /F" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /J" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /o" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /H" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /e" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /B" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /X" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /O" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /z" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /V" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /h" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /a" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /G" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /W" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /c" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /f" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /r" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /E" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /L" ymjah.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /w" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /n" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /E" b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /S" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /b" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /u" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /P" ymjah.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /Q" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /s" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /p" ymjah.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ymjah = "C:\\Users\\Admin\\ymjah.exe /M" ymjah.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2320 b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe 2320 b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe 2156 ymjah.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2320 b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe 2156 ymjah.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2320 wrote to memory of 2156 2320 b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe 83 PID 2320 wrote to memory of 2156 2320 b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe 83 PID 2320 wrote to memory of 2156 2320 b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe 83
Processes
-
C:\Users\Admin\AppData\Local\Temp\b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.exe"C:\Users\Admin\AppData\Local\Temp\b2de6953be38b52267d039fa53078d24bbf5294da3dc65675eecd7f4b7b72b36.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:2320 -
C:\Users\Admin\ymjah.exe"C:\Users\Admin\ymjah.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:2156
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\ymjah.exe
- Size 120KB
- SHA256 f4e9f2e1bd7010dd8f45390f27ed765afbe275b7cf0ec45534c0bea05c3ac4de
- MD5 86687aeadeca6fbbb06c03ba1940c5a4
- SHA1 395f34f4bf04b1418df45b5c5f0bbda9e9e019a0
- SHA512 510edc68d2486c32cb1dc46ab11592ef229368142edbd4939678008fdc20243f07a467a17c60484f23b779df7f8fe451bf2402ec7d643c65fa7691937941ff44
- SSDEEP 1536:xGSK3AIAgd1/FXWG6izZNP6RQ3mncbvbj3a2HCBjsXLl/Gfx8XNf0On:xG7hpd1/l0izZF6yCenK2iGlefx8X1b
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\ymjah.exe
- Size 120KB
- SHA256 f4e9f2e1bd7010dd8f45390f27ed765afbe275b7cf0ec45534c0bea05c3ac4de
- MD5 86687aeadeca6fbbb06c03ba1940c5a4
- SHA1 395f34f4bf04b1418df45b5c5f0bbda9e9e019a0
- SHA512 510edc68d2486c32cb1dc46ab11592ef229368142edbd4939678008fdc20243f07a467a17c60484f23b779df7f8fe451bf2402ec7d643c65fa7691937941ff44
- SSDEEP 1536:xGSK3AIAgd1/FXWG6izZNP6RQ3mncbvbj3a2HCBjsXLl/Gfx8XNf0On:xG7hpd1/l0izZF6yCenK2iGlefx8X1b
- MD5 SHA1 SHA512 SSDEEP