Analysis
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max time kernel
150s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
25-02-2024 12:03
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
a3bb735dd4c120637b3ebd1909c8af9e.exe
Resource
win7-20240221-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
a3bb735dd4c120637b3ebd1909c8af9e.exe
Resource
win10v2004-20240221-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
a3bb735dd4c120637b3ebd1909c8af9e.exe
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Size
100KB
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MD5
a3bb735dd4c120637b3ebd1909c8af9e
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SHA1
fcb4d8ea07e97b94e3fd0714701a12802047d0ce
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SHA256
54e62b042ade1d913fe8cc7b45681fb8fa088ac4b835e5a7dda2c0fc36996789
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SHA512
b9b6dbc7f19a3093066ad192aa5e37d2e1dcd2b6ab5f27288aae0fe8f67d18b94882b465954b26552880c3c602d1fd6bd1f5e1fae7a777ab99a8ed6f622e1f66
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SSDEEP
1536:EKtGT82NTzwKOMGAc4ohrPXo+73Rez8b0Sy1NIjnZr7:QwwurPX7C1Cnt7
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-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" a3bb735dd4c120637b3ebd1909c8af9e.exe Set value (int) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" ruaoka.exe -
Executes dropped EXE 1 IoCs
pid Process 2376 ruaoka.exe -
Loads dropped DLL 2 IoCs
pid Process 2220 a3bb735dd4c120637b3ebd1909c8af9e.exe 2220 a3bb735dd4c120637b3ebd1909c8af9e.exe -
Adds Run key to start application 2 TTPs 50 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /j" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /H" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /f" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /t" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /B" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /A" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /G" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /d" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /z" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /Z" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /C" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /v" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /c" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /R" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /D" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /u" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /w" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /g" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /Q" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /a" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /O" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /X" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /Y" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /T" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /V" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /k" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /b" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /o" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /q" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /S" a3bb735dd4c120637b3ebd1909c8af9e.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /K" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /I" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /E" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /h" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /l" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /i" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /P" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /L" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /U" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /p" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /y" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /n" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /M" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /s" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /S" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /m" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /W" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /x" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /e" ruaoka.exe Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows\CurrentVersion\Run\ruaoka = "C:\\Users\\Admin\\ruaoka.exe /J" ruaoka.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2220 a3bb735dd4c120637b3ebd1909c8af9e.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe 2376 ruaoka.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2220 a3bb735dd4c120637b3ebd1909c8af9e.exe 2376 ruaoka.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2220 wrote to memory of 2376 2220 a3bb735dd4c120637b3ebd1909c8af9e.exe 28 PID 2220 wrote to memory of 2376 2220 a3bb735dd4c120637b3ebd1909c8af9e.exe 28 PID 2220 wrote to memory of 2376 2220 a3bb735dd4c120637b3ebd1909c8af9e.exe 28 PID 2220 wrote to memory of 2376 2220 a3bb735dd4c120637b3ebd1909c8af9e.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\a3bb735dd4c120637b3ebd1909c8af9e.exe"C:\Users\Admin\AppData\Local\Temp\a3bb735dd4c120637b3ebd1909c8af9e.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2220 -
C:\Users\Admin\ruaoka.exe"C:\Users\Admin\ruaoka.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:2376
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
100KB
MD5740f114466cb0fc480c4903784249c51
SHA1278d447fa6180c81337f3429f880b59e778e4f8f
SHA256981cd488106a1b56323f12e0e472035ee67fb4e9125863272254dd4ea9df57c2
SHA512d90419847f2e929a096e5e77f0dea01a56c1ba7dc628e8ad472cc344586e13cc6dd248a351e2d9ef05f9461b136ac24456a22fa760bffdf9d298b040084680f9