Analysis
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max time kernel
118s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
21-05-2024 05:04
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe
Resource
win7-20231129-en
3 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe
Resource
win10v2004-20240226-en
11 signatures
150 seconds
General
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Target
2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe
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Size
11.0MB
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MD5
b5bdb0a2c051419d31a29eac7452cec3
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SHA1
a200127d0a8a8c3b3674ef0b88ebc49ad353d31e
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SHA256
76505470086d997b23450c815d6e5bd865cd23dde42e8aec9adb35cf783912cd
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SHA512
48d3ce692c9b19a972bcb70f0a66597b5ab09c721377512e64e8164efc1918ca591b8dc6f2f9ea6fd5a412793d4d120cfbe1265b0dde0d22bd18c0ff115eb827
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SSDEEP
196608:KtUkI7c8ngwmDcc8YdaK5fBrsFwTb1wdTm0v+8kZsfl3M8a/CLKBazGHqE:l7SWYUuGaTbfU+xGq80CLKDB
Score
6/10
Malware Config
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\MyStart = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe" 2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 948 2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe 948 2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe 948 2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 948 wrote to memory of 1900 948 2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe 28 PID 948 wrote to memory of 1900 948 2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe 28 PID 948 wrote to memory of 1900 948 2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-21_b5bdb0a2c051419d31a29eac7452cec3_ryuk.exe"1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:948 -
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 948 -s 1562⤵PID:1900
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