Analysis
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max time kernel
144s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
04-01-2024 07:13
Behavioral task
behavioral1
Sample
403990c6cbb042f7c1f5e57177272f81.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
403990c6cbb042f7c1f5e57177272f81.exe
Resource
win10v2004-20231215-en
General
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Target
403990c6cbb042f7c1f5e57177272f81.exe
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Size
1.3MB
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MD5
403990c6cbb042f7c1f5e57177272f81
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SHA1
ab9ef44ed7b93ecf7b6c43f23d75a3f2dc9d5a1b
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SHA256
42af92e5be37c1daddda7672372a39ccebb24d31d2ea65bec2a74dfbc3a4e82c
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SHA512
cb1adffb69f4ff6a62257325504cebc41d22f41910a41eae9c04ec5327da9f58fb652e79b87f580c7ac6f81f27cf2fba77b4fc3947b27dd59ae376f2d7c57ee5
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SSDEEP
24576:hW5Df+qq6n4nP3P/oldSC+v18pqOxtKBsYOkP7Jz5I4MZ+xnF84gv41bb1tnKx4/:h9tvMqkm15SnDF5IPsmAjinh
Malware Config
Signatures
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Loads dropped DLL 1 IoCs
pid Process 3976 403990c6cbb042f7c1f5e57177272f81.exe -
Drops desktop.ini file(s) 2 IoCs
description ioc Process File created C:\Windows\assembly\Desktop.ini 403990c6cbb042f7c1f5e57177272f81.exe File opened for modification C:\Windows\assembly\Desktop.ini 403990c6cbb042f7c1f5e57177272f81.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\assembly 403990c6cbb042f7c1f5e57177272f81.exe File created C:\Windows\assembly\Desktop.ini 403990c6cbb042f7c1f5e57177272f81.exe File opened for modification C:\Windows\assembly\Desktop.ini 403990c6cbb042f7c1f5e57177272f81.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 dw20.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz dw20.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString dw20.exe -
Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS dw20.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU dw20.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeBackupPrivilege 2484 dw20.exe Token: SeBackupPrivilege 2484 dw20.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3976 wrote to memory of 2484 3976 403990c6cbb042f7c1f5e57177272f81.exe 92 PID 3976 wrote to memory of 2484 3976 403990c6cbb042f7c1f5e57177272f81.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\403990c6cbb042f7c1f5e57177272f81.exe"C:\Users\Admin\AppData\Local\Temp\403990c6cbb042f7c1f5e57177272f81.exe"1⤵
- Loads dropped DLL
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3976 -
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exedw20.exe -x -s 8762⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:2484
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
39KB
MD5d80d1b6d9a6d5986fa47f6f8487030e1
SHA18f5773bf9eca43b079c1766b2e9f44cc90bd9215
SHA256446128f1712da8064d0197376184315cb529ed26ed9122f7b171bb208e22c0c3
SHA5129fcf0105c2c9ee81c526d41633d93579bb8e2837989d77fb4a6523440415ec2d7fa46ac9ae4e55ecebd99126837817ac308cc079475de02667b21727a43d74cc