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Analysis
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max time kernel
150s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
01/12/2022, 23:51
Static task
static1
Behavioral task
behavioral1
Sample
b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe
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Size
168KB
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MD5
3062062af74c8901ad9848fe96e987eb
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SHA1
7a0c8e13e9f874966eb1b80412fccbd00f298d33
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SHA256
b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281
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SHA512
341f5718355b41fe233970bcfaaa9b119dc0874157bbddd5d43ab15bc12806f25c063e2b849a708c19cfb4832738e769a883970bbfb2d1b476ff01ca2cb0a6b3
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SSDEEP
3072:AKhZFfeKiGLOlx6ktpl/umGZPvX8T0wAt7IFREQC2mH:AKhLznOlx6kt/q5zwAthv
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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" siujof.exe -
Executes dropped EXE 1 IoCs
pid Process 916 siujof.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /v" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /j" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /h" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /e" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /r" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /w" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /q" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /y" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /z" siujof.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /i" siujof.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /f" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /d" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /k" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /f" b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /t" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /u" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /g" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /o" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /x" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /c" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /m" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /a" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /p" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /l" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /b" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /n" siujof.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\siujof = "C:\\Users\\Admin\\siujof.exe /s" siujof.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 4252 b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe 4252 b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe 916 siujof.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4252 b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe 916 siujof.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4252 wrote to memory of 916 4252 b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe 81 PID 4252 wrote to memory of 916 4252 b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe 81 PID 4252 wrote to memory of 916 4252 b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.exe"C:\Users\Admin\AppData\Local\Temp\b6a3fdcf100fb7dc0e1dcb679b3dcbf1f09c85ad1ca4a6f7474e8f223301f281.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:4252 -
C:\Users\Admin\siujof.exe"C:\Users\Admin\siujof.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:916
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
168KB
MD5c70272a0aaaa5d01c0cd1dc16de6b5ee
SHA177c194693775052bd08f474244fd8c6401f8e88e
SHA256733530bc246415a61ee37aabf6dc6b3d6e8663dde74ee97f17431a2b1a3a64e8
SHA5122116677cb1101b21ba17e6370cee1702638e3b32584d496ae8e0fb0038d0266de8679c4040333c3e28aa824dff2b51939e7465386bd8268033d4e6ceec9dbf2c
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Filesize
168KB
MD5c70272a0aaaa5d01c0cd1dc16de6b5ee
SHA177c194693775052bd08f474244fd8c6401f8e88e
SHA256733530bc246415a61ee37aabf6dc6b3d6e8663dde74ee97f17431a2b1a3a64e8
SHA5122116677cb1101b21ba17e6370cee1702638e3b32584d496ae8e0fb0038d0266de8679c4040333c3e28aa824dff2b51939e7465386bd8268033d4e6ceec9dbf2c