Analysis
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max time kernel
150s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
05-12-2022 18:52
Static task
static1
Behavioral task
behavioral1
Sample
b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe
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Size
296KB
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MD5
16f38e497750cc5f0577f99f41a92957
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SHA1
e3a4efca66bc3bfe4f55bbc78af827deade00c2b
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SHA256
b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1
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SHA512
c428d251a261b4059292d1840d14cc918546c525d1434093d2bbf4d7e863482fb96be042f6353a1fecbd6198c8693105540ec5b89f706c737d1ffdad0f4010ec
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SSDEEP
6144:L2UFRxtJcCC2lfKgO32mO1IdifegrSQOJMmSnxtAPUWJj9/P/oEAlu9UY6L6P:LLtTCqmjZHJFnPnp6l2UuP
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" b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yeitae.exe -
Executes dropped EXE 1 IoCs
pid Process 4816 yeitae.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 b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.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\yeitae = "C:\\Users\\Admin\\yeitae.exe /s" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /i" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /k" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /t" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /f" b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /l" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /a" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /v" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /w" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /n" yeitae.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /z" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /x" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /q" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /o" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /e" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /u" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /j" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /p" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /h" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /b" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /g" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /y" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /m" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /c" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /d" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /r" yeitae.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeitae = "C:\\Users\\Admin\\yeitae.exe /f" yeitae.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 2 IoCs
pid pid_target Process procid_target 4044 2976 WerFault.exe 17 1004 316 WerFault.exe 86 -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 316 svchost.exe 5092 svchost.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1028 b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe 1028 b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe 4816 yeitae.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1028 b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe 4816 yeitae.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1028 wrote to memory of 4816 1028 b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe 82 PID 1028 wrote to memory of 4816 1028 b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe 82 PID 1028 wrote to memory of 4816 1028 b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.exe"C:\Users\Admin\AppData\Local\Temp\b314e822198e598afcf73a976471ede7a12aae6e658a2be822a222421c4e8fa1.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:1028 -
C:\Users\Admin\yeitae.exe"C:\Users\Admin\yeitae.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:4816
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 184 -p 2976 -ip 29761⤵PID:4208
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 2976 -s 14281⤵
- Program crash
PID:4044
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc1⤵
- Suspicious behavior: AddClipboardFormatListener
PID:316 -
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 316 -s 19282⤵
- Program crash
PID:1004
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 528 -p 316 -ip 3161⤵PID:2008
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc1⤵
- Suspicious behavior: AddClipboardFormatListener
PID:5092
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
296KB
MD5c78f1a8ccf81c5f1e23eaf0ee3aeae0e
SHA1b308493b71250234a9d6733220b43ddeaa3672f0
SHA2560f46d4a084fef7c539ddd2fab5228112f92aab313ccafa57e35586214398e245
SHA5122517782b380e77c74bbfce6b79fb1f8fe6ba750e6ee8d623ec4a436c5b9269500d6baabafef62ab18bdf659eb58e6b548c668501a0154bb19ca9802aaa167ff4
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Filesize
296KB
MD5c78f1a8ccf81c5f1e23eaf0ee3aeae0e
SHA1b308493b71250234a9d6733220b43ddeaa3672f0
SHA2560f46d4a084fef7c539ddd2fab5228112f92aab313ccafa57e35586214398e245
SHA5122517782b380e77c74bbfce6b79fb1f8fe6ba750e6ee8d623ec4a436c5b9269500d6baabafef62ab18bdf659eb58e6b548c668501a0154bb19ca9802aaa167ff4