Analysis
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max time kernel
94s -
max time network
96s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
04-09-2024 22:33
Static task
static1
Behavioral task
behavioral1
Sample
55b78c947cfe5364c1af28c90343a070N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
55b78c947cfe5364c1af28c90343a070N.exe
Resource
win10v2004-20240802-en
General
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Target
55b78c947cfe5364c1af28c90343a070N.exe
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Size
282KB
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MD5
55b78c947cfe5364c1af28c90343a070
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SHA1
2e287abf7dd0a7f2d9aba8bf9045eaa6081ad01a
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SHA256
ce63f32e218780e78c1c6809c7f47b9105edd5980450d61881ea14311b5511d5
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SHA512
ab670c08519173fdb1bd03852bba127f9302e945a69769a6dbf4c3a0f98378cf437ffc3a10b09093780c18c142444a9d8aefab3de69c7d90e0e21fba4dbc645d
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SSDEEP
6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfI:boSeGUA5YZazpXUmZhZ6S5
Malware Config
Signatures
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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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation 55b78c947cfe5364c1af28c90343a070N.exe -
Executes dropped EXE 1 IoCs
pid Process 2324 a1punf5t2of.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" 55b78c947cfe5364c1af28c90343a070N.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 55b78c947cfe5364c1af28c90343a070N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1punf5t2of.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1104 wrote to memory of 2324 1104 55b78c947cfe5364c1af28c90343a070N.exe 97 PID 1104 wrote to memory of 2324 1104 55b78c947cfe5364c1af28c90343a070N.exe 97 PID 1104 wrote to memory of 2324 1104 55b78c947cfe5364c1af28c90343a070N.exe 97 PID 2324 wrote to memory of 4028 2324 a1punf5t2of.exe 98 PID 2324 wrote to memory of 4028 2324 a1punf5t2of.exe 98 PID 2324 wrote to memory of 4028 2324 a1punf5t2of.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\55b78c947cfe5364c1af28c90343a070N.exe"C:\Users\Admin\AppData\Local\Temp\55b78c947cfe5364c1af28c90343a070N.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1104 -
C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2324 -
C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"3⤵PID:4028
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
282KB
MD5d77f670150dbb85a61ecc67818f56b6e
SHA1000f5a8f26ec65fd5ef10afbd725b0c8b7e6eaa1
SHA2563c490eaf0b41c4a0a61058d75a3bc3c9c61b96409032c5d242ece62c98e630ba
SHA5120ca9b5ec060e6c18b139a686a3dae51bcd8fca99bbee52b6e8f059374e6a15d6ec2b39b02b168a82f39e7e5402dc847795e7f924d1ad164e3979e7097c7070d1