Analysis
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max time kernel
153s -
max time network
163s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
07/11/2022, 16:38
Static task
static1
Behavioral task
behavioral1
Sample
39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe
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Size
140KB
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MD5
0dd7b464d00c83b8ce3e0679ed6723e7
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SHA1
6a2712c855a27de8aeae387aa10aeccadea42190
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SHA256
39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f
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SHA512
11c1421edcb0411dfe70b552972189953893f141ad11ad78d4828a753b2b4b18505386465100ecc604397b2e47d0c8cc0f6d75461a20d9c648de6466c61d1e14
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SSDEEP
1536:VjMbWA6A/HDfMD0le1CsKYx46lH1jzvR5wRqtqpnfQ5ACKTAIMti66XDJhdquHbl:V4/x7MDs0CrvYmZA7Z6HQo/HGeKK
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" guusar.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe -
Executes dropped EXE 1 IoCs
pid Process 4804 guusar.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 39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe -
Adds Run key to start application 2 TTPs 54 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /l" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /Q" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /U" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /h" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /u" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /e" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /F" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /D" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /M" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /A" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /j" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /C" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /s" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /Z" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /a" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /p" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /k" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /L" guusar.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /v" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /g" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /i" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /Y" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /f" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /G" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /c" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /O" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /V" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /S" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /A" 39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /q" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /E" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /n" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /x" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /H" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /P" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /I" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /o" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /X" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /d" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /J" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /N" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /r" guusar.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /T" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /W" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /m" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /K" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /z" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /B" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /y" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /R" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /b" guusar.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\guusar = "C:\\Users\\Admin\\guusar.exe /t" guusar.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 2952 39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe 2952 39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe 4804 guusar.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2952 39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe 4804 guusar.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2952 wrote to memory of 4804 2952 39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe 81 PID 2952 wrote to memory of 4804 2952 39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe 81 PID 2952 wrote to memory of 4804 2952 39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.exe"C:\Users\Admin\AppData\Local\Temp\39dac66acf4b1325442a546eb93e2f26387088a38b3281f28a8a62d64314162f.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:2952 -
C:\Users\Admin\guusar.exe"C:\Users\Admin\guusar.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:4804
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
140KB
MD538d6b98fb1c0991a577ee423a8333cdd
SHA1520ed39d924754f6d0e22789a477931bfabaf818
SHA256960a3a75d5e30967a63fb9391631de4d1446c4774c9534656d7fd3c43c72a542
SHA5120320dd4b7a87c3f0c0b1740cc014cfa3c23fe07c2435bb776cc38933c0168d78a69278f6c41508f5f384f3e90ec8ea34381c361cf00ad71a903fdbbbf0c2500f
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Filesize
140KB
MD538d6b98fb1c0991a577ee423a8333cdd
SHA1520ed39d924754f6d0e22789a477931bfabaf818
SHA256960a3a75d5e30967a63fb9391631de4d1446c4774c9534656d7fd3c43c72a542
SHA5120320dd4b7a87c3f0c0b1740cc014cfa3c23fe07c2435bb776cc38933c0168d78a69278f6c41508f5f384f3e90ec8ea34381c361cf00ad71a903fdbbbf0c2500f