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Analysis
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max time kernel
153s -
max time network
31s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
29/11/2022, 17:13
Static task
static1
Behavioral task
behavioral1
Sample
b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe
Resource
win10v2004-20221111-en
General
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Target
b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe
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Size
196KB
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MD5
45865a7b63df4f876e067301df5b14ad
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SHA1
37ea93a4420028945e8b9e06a7edb2854cd30eb6
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SHA256
b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0
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SHA512
131498ffe6c25160bcff1b8c63d62731dc3165fecdeb0a82ef9cd39fe181fa9d259ade5fe919b657dca94fbabca8c6349b14321755692af116ea0a0718513077
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SSDEEP
3072:1uAkoaXd323AKyXzUiKiJeIMUyJA0jNGgu0CHRf7nOa682EHqNo3m5p:1uAko1yNKiJeIMHBJGg9Cxf7XHwo36
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe -
Executes dropped EXE 1 IoCs
pid Process 1528 wuolay.exe -
Loads dropped DLL 2 IoCs
pid Process 960 b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe 960 b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\wuolay = "C:\\Users\\Admin\\wuolay.exe /c" b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.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 1 IoCs
pid Process 960 b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 960 b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe 1528 wuolay.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 960 wrote to memory of 1528 960 b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe 28 PID 960 wrote to memory of 1528 960 b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe 28 PID 960 wrote to memory of 1528 960 b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe 28 PID 960 wrote to memory of 1528 960 b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe"C:\Users\Admin\AppData\Local\Temp\b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.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:960 -
C:\Users\Admin\wuolay.exe"C:\Users\Admin\wuolay.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1528
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
196KB
MD5f431e4df36fb02636c2f913aa734b344
SHA16465eee3fe2956e02e54f29e5e03818124e5ab27
SHA2565668dd638eb1704f75703ff857d31a5f01a56e2fab0fc3fea12838f853037970
SHA512b092c17ec30d018c38a0894a914df44a44be22c7d38b3fdb500592177dc8a366c1261f402c2cc4f71a2e79a03815272d015518ade02cfdba1de68575b86d2dec
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Filesize
196KB
MD5f431e4df36fb02636c2f913aa734b344
SHA16465eee3fe2956e02e54f29e5e03818124e5ab27
SHA2565668dd638eb1704f75703ff857d31a5f01a56e2fab0fc3fea12838f853037970
SHA512b092c17ec30d018c38a0894a914df44a44be22c7d38b3fdb500592177dc8a366c1261f402c2cc4f71a2e79a03815272d015518ade02cfdba1de68575b86d2dec
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Filesize
196KB
MD5f431e4df36fb02636c2f913aa734b344
SHA16465eee3fe2956e02e54f29e5e03818124e5ab27
SHA2565668dd638eb1704f75703ff857d31a5f01a56e2fab0fc3fea12838f853037970
SHA512b092c17ec30d018c38a0894a914df44a44be22c7d38b3fdb500592177dc8a366c1261f402c2cc4f71a2e79a03815272d015518ade02cfdba1de68575b86d2dec
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Filesize
196KB
MD5f431e4df36fb02636c2f913aa734b344
SHA16465eee3fe2956e02e54f29e5e03818124e5ab27
SHA2565668dd638eb1704f75703ff857d31a5f01a56e2fab0fc3fea12838f853037970
SHA512b092c17ec30d018c38a0894a914df44a44be22c7d38b3fdb500592177dc8a366c1261f402c2cc4f71a2e79a03815272d015518ade02cfdba1de68575b86d2dec