Analysis
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max time kernel
151s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
02/12/2022, 23:40
Static task
static1
Behavioral task
behavioral1
Sample
a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe
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Size
156KB
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MD5
876d3bba8a0193913b97e88e28c4503c
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SHA1
840d4a9b46859d52bfb0277a6a75dc4d419dbaf2
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SHA256
a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170
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SHA512
d26bec3de3a3c7be252aaf4b46e1518f131cd30f5af3fe99accc6b2037f4c8a0845b20e89709491fb094234d637f4bcdf29ab5b472cdf59c2f6ad2d22fa96bb0
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SSDEEP
3072:vsTNiVcx8jeFvB0Z/I8xSFJKAr2CrIL3NoF0:UpIcvqVuJfr2CML3+i
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" a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yiemaur.exe -
Executes dropped EXE 1 IoCs
pid Process 4364 yiemaur.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 a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.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\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /f" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /l" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /c" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /v" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /x" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /q" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /h" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /y" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /i" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /d" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /m" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /r" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /s" yiemaur.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /j" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /k" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /o" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /n" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /a" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /p" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /t" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /z" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /g" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /e" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /l" a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /w" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /b" yiemaur.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiemaur = "C:\\Users\\Admin\\yiemaur.exe /u" yiemaur.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yiemaur.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 1040 a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe 1040 a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe 4364 yiemaur.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1040 a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe 4364 yiemaur.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1040 wrote to memory of 4364 1040 a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe 79 PID 1040 wrote to memory of 4364 1040 a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe 79 PID 1040 wrote to memory of 4364 1040 a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.exe"C:\Users\Admin\AppData\Local\Temp\a970b932c0d08f58bc593eee24d23fa39b9cc1b66eabee755d9087939965d170.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:1040 -
C:\Users\Admin\yiemaur.exe"C:\Users\Admin\yiemaur.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:4364
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
156KB
MD52aaf5d09301a62dd792cf75127db8873
SHA1d144c91042331c23952b0b6b266081eeada97dd0
SHA256ab3201462a3d5fb2fc052abe264694fd5b122b5f1f7cb07a697fb0f8732d0eb0
SHA51219c08790b1ef1e5227ea7eed7aa4c6952587cd6ecd74cce9cbe20654ea756221db07d8619c3d2cfd49ee81a974b379108e9710ab3b7adb7bc33569ff75666c69
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Filesize
156KB
MD52aaf5d09301a62dd792cf75127db8873
SHA1d144c91042331c23952b0b6b266081eeada97dd0
SHA256ab3201462a3d5fb2fc052abe264694fd5b122b5f1f7cb07a697fb0f8732d0eb0
SHA51219c08790b1ef1e5227ea7eed7aa4c6952587cd6ecd74cce9cbe20654ea756221db07d8619c3d2cfd49ee81a974b379108e9710ab3b7adb7bc33569ff75666c69