Analysis
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max time kernel
189s -
max time network
197s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
23/11/2022, 18:11
Static task
static1
Behavioral task
behavioral1
Sample
76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe
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Size
320KB
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MD5
5965790c4d4f6f570563d9f658225450
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SHA1
f9893bbe4d7337239481a250d41b68133b4892e9
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SHA256
76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf
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SHA512
115d0014db59d8ffe990ca8b686e8cb12644626e1b657fd6f8b2b24ffc2b3703369b5c815cc8e8f2a37e9a48f974dd592ff6d491ccebc97ccbf2f1d8da035f80
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SSDEEP
6144:CpHIcFeEK/fObT/bGibErxUyF+fmYYdPMAaiSeg:C5IcFeEK/fObT/bGiPo+eYYt/LSeg
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-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe Set value (int) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yaaja.exe -
Executes dropped EXE 1 IoCs
pid Process 4720 yaaja.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation 76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe -
Adds Run key to start application 2 TTPs 54 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /Z" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /N" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /F" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /C" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /D" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /l" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /I" 76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /x" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /T" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /e" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /p" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /c" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /i" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /H" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /q" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /Q" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /A" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /r" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /v" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /h" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /j" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /R" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /P" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /K" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /X" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /B" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /M" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /t" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /U" yaaja.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /m" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /V" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /O" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /s" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /Y" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /d" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /a" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /z" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /b" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /y" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /f" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /E" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /L" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /w" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /J" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /k" yaaja.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /o" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /n" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /G" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /S" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /g" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /W" yaaja.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaaja = "C:\\Users\\Admin\\yaaja.exe /u" yaaja.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 4412 76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe 4412 76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe 4720 yaaja.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4412 76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe 4720 yaaja.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4412 wrote to memory of 4720 4412 76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe 83 PID 4412 wrote to memory of 4720 4412 76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe 83 PID 4412 wrote to memory of 4720 4412 76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.exe"C:\Users\Admin\AppData\Local\Temp\76b7f8f5c4e92c938d4a2ff504a52eb2ed5ee07c6879a4d80cf91f2c631a2bbf.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:4412 -
C:\Users\Admin\yaaja.exe"C:\Users\Admin\yaaja.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:4720
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
320KB
MD5f949ac379fb636c3fed1bb0e952d9d2c
SHA11060da513a091834bbb215b52623279c5655dabb
SHA25610783d0cb04406129fc677f5cbd5007b9552ece0aa79a14dff6be07b06c6bb32
SHA5129e9f8fdb22faa93e22f88b34129b7245fec4577975ede905f02a5436c038ebe9dadffebcce483d443791cb584ea77851403417ed1659045f67cde6b4a7fda52c
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Filesize
320KB
MD5f949ac379fb636c3fed1bb0e952d9d2c
SHA11060da513a091834bbb215b52623279c5655dabb
SHA25610783d0cb04406129fc677f5cbd5007b9552ece0aa79a14dff6be07b06c6bb32
SHA5129e9f8fdb22faa93e22f88b34129b7245fec4577975ede905f02a5436c038ebe9dadffebcce483d443791cb584ea77851403417ed1659045f67cde6b4a7fda52c