Analysis
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max time kernel
145s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
22-04-2024 16:09
Static task
static1
Behavioral task
behavioral1
Sample
1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe
Resource
win10v2004-20240412-en
General
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Target
1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe
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Size
260KB
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MD5
41c448b57f6dcf40b8f386f0a6787b04
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SHA1
79fb684f1020df34971c3efc0177d2c90dfd1832
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SHA256
1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc
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SHA512
2c801614f76849d13c812abab1f1c47c62dd0f6e1c144b520a57c8a79fdb2d81fb655bfb27280b0f2d968dc1fc161a239c2634f5bcba732a8aa50760f24da1f1
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SSDEEP
6144:6Pzon6O1k4ZmXquk9TrYQbhM4XXZy+gjLQz3jJ5Q2B:6PzojdmXqz9BhM4XZmjLs3j42B
Malware Config
Extracted
smokeloader
2017
http://requiremed.com/
http://epochtitle.com/
http://modifican.com/
Signatures
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Adds policy Run key to start application 2 TTPs 2 IoCs
Processes:
explorer.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\RegisteredApplications = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\wvbafdfu\\grtdurgr.exe" explorer.exe -
Deletes itself 1 IoCs
Processes:
explorer.exepid process 3928 explorer.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: MapViewOfSection 2 IoCs
Processes:
1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exepid process 1640 1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe 1640 1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exedescription pid process target process PID 1640 wrote to memory of 3928 1640 1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe explorer.exe PID 1640 wrote to memory of 3928 1640 1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe explorer.exe PID 1640 wrote to memory of 3928 1640 1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe explorer.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe"C:\Users\Admin\AppData\Local\Temp\1095557564402c8b3dd55675db4065ade80135e3b9efe0f58581248a1a4489cc.exe"1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exeexplorer.exe2⤵
- Adds policy Run key to start application
- Deletes itself
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1640-8-0x0000000002380000-0x0000000002381000-memory.dmpFilesize
4KB
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memory/1640-6-0x0000000000400000-0x0000000000447000-memory.dmpFilesize
284KB
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memory/1640-2-0x0000000002380000-0x0000000002381000-memory.dmpFilesize
4KB
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memory/1640-3-0x0000000002380000-0x0000000002381000-memory.dmpFilesize
4KB
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memory/1640-0-0x0000000000400000-0x0000000000447000-memory.dmpFilesize
284KB
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memory/1640-5-0x0000000002380000-0x0000000002390000-memory.dmpFilesize
64KB
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memory/1640-1-0x00000000022F0000-0x0000000002370000-memory.dmpFilesize
512KB
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memory/1640-7-0x0000000002680000-0x000000000268A000-memory.dmpFilesize
40KB
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memory/1640-4-0x00000000022F0000-0x0000000002370000-memory.dmpFilesize
512KB
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memory/1640-16-0x0000000002680000-0x000000000268A000-memory.dmpFilesize
40KB
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memory/3928-12-0x0000000000EA0000-0x00000000012D3000-memory.dmpFilesize
4.2MB
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memory/3928-13-0x0000000000A60000-0x0000000000A6A000-memory.dmpFilesize
40KB
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memory/3928-10-0x0000000000EA0000-0x00000000012D3000-memory.dmpFilesize
4.2MB
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memory/3928-20-0x0000000000A60000-0x0000000000A6A000-memory.dmpFilesize
40KB
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memory/3928-21-0x0000000000A60000-0x0000000000A6A000-memory.dmpFilesize
40KB
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memory/3928-24-0x0000000000A60000-0x0000000000A6A000-memory.dmpFilesize
40KB