Analysis
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max time kernel
149s -
max time network
175s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
30-11-2022 13:20
Behavioral task
behavioral1
Sample
19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
General
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Target
19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe
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Size
107KB
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MD5
0b3dac3d2c58050280dbe7d624ba9366
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SHA1
5ff0adac4c74eacb0ffb5cbbbe13bc22d035674f
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SHA256
19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d
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SHA512
d3f04977a6aa2a8a2dde522893404c24415e409e4f7ad6aee11c1cfc74ac44c1aa57e6facd9d36f635e8099a168ae1bedfe497f565a3cd8ff1e3d2942dbf497c
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SSDEEP
3072:s6pqYis+Gyg67r9Lz5rPCUyP9jnOFw5p1X:lpOs+s6f9Ld9cn86
Malware Config
Signatures
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Drops file in System32 directory 1 IoCs
Processes:
relrel.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat relrel.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies data under HKEY_USERS 21 IoCs
Processes:
relrel.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings relrel.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 relrel.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix relrel.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 relrel.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0050000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 relrel.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F6F4C285-D3C8-43DC-BE40-B7F07AA8BBB6}\32-a7-24-0a-da-6c relrel.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings relrel.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F6F4C285-D3C8-43DC-BE40-B7F07AA8BBB6}\WpadDecisionReason = "1" relrel.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-a7-24-0a-da-6c\WpadDecisionTime = 20eae8934706d901 relrel.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" relrel.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" relrel.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad relrel.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F6F4C285-D3C8-43DC-BE40-B7F07AA8BBB6} relrel.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F6F4C285-D3C8-43DC-BE40-B7F07AA8BBB6}\WpadDecisionTime = 20eae8934706d901 relrel.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-a7-24-0a-da-6c\WpadDecisionReason = "1" relrel.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections relrel.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" relrel.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F6F4C285-D3C8-43DC-BE40-B7F07AA8BBB6}\WpadDecision = "0" relrel.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F6F4C285-D3C8-43DC-BE40-B7F07AA8BBB6}\WpadNetworkName = "Network 2" relrel.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-a7-24-0a-da-6c relrel.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-a7-24-0a-da-6c\WpadDecision = "0" relrel.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
relrel.exepid process 468 relrel.exe 468 relrel.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exepid process 1236 19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe -
Suspicious use of UnmapMainImage 4 IoCs
Processes:
19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exerelrel.exerelrel.exepid process 2032 19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe 1236 19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe 544 relrel.exe 468 relrel.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exerelrel.exedescription pid process target process PID 2032 wrote to memory of 1236 2032 19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe 19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe PID 2032 wrote to memory of 1236 2032 19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe 19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe PID 2032 wrote to memory of 1236 2032 19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe 19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe PID 2032 wrote to memory of 1236 2032 19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe 19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe PID 544 wrote to memory of 468 544 relrel.exe relrel.exe PID 544 wrote to memory of 468 544 relrel.exe relrel.exe PID 544 wrote to memory of 468 544 relrel.exe relrel.exe PID 544 wrote to memory of 468 544 relrel.exe relrel.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe"C:\Users\Admin\AppData\Local\Temp\19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe"1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2032 -
C:\Users\Admin\AppData\Local\Temp\19c8558e871aab1d4e38c9e9b077695ec4a2b416e6a56d0628daa8396432f37d.exe--dd92943b2⤵
- Suspicious behavior: RenamesItself
- Suspicious use of UnmapMainImage
PID:1236
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C:\Windows\SysWOW64\relrel.exe"C:\Windows\SysWOW64\relrel.exe"1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:544 -
C:\Windows\SysWOW64\relrel.exe--618f83d22⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of UnmapMainImage
PID:468
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