Analysis
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max time kernel
93s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
13-10-2024 17:25
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-13_56fd67a1c8858bcaff061bce33f9bb81_cobalt-strike_ryuk.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-13_56fd67a1c8858bcaff061bce33f9bb81_cobalt-strike_ryuk.exe
Resource
win10v2004-20241007-en
General
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Target
2024-10-13_56fd67a1c8858bcaff061bce33f9bb81_cobalt-strike_ryuk.exe
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Size
4.0MB
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MD5
56fd67a1c8858bcaff061bce33f9bb81
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SHA1
00f21580a7722f83e95d370d1d2b3d1f786f2e15
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SHA256
be9a71fb71c7cd415fde4c8545daa820addb8c2a698596a23d0d8c2f27c885d8
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SHA512
e663ddbbe2cade1294163ba005960c1c14bf4319661a88f3fcb8f7c0fd17f1915b6b27ee5c954e48439164895753bbce7a9bbc64988478212982c1c2e38d1f59
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SSDEEP
49152:06YsNAYAmoXin1OBfuHS1IFfv1remoXin1OBfuHS1IFfv1r6:XjZAm51OBfujFfvIm51OBfujFfvI
Malware Config
Signatures
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Delays execution with timeout.exe 1 IoCs
pid Process 4728 timeout.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 4080 wrote to memory of 1476 4080 2024-10-13_56fd67a1c8858bcaff061bce33f9bb81_cobalt-strike_ryuk.exe 86 PID 4080 wrote to memory of 1476 4080 2024-10-13_56fd67a1c8858bcaff061bce33f9bb81_cobalt-strike_ryuk.exe 86 PID 1476 wrote to memory of 4728 1476 cmd.exe 88 PID 1476 wrote to memory of 4728 1476 cmd.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-13_56fd67a1c8858bcaff061bce33f9bb81_cobalt-strike_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-13_56fd67a1c8858bcaff061bce33f9bb81_cobalt-strike_ryuk.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4080 -
C:\Windows\SYSTEM32\cmd.execmd.exe /c timeout 5 & del /f C:\Users\Admin\AppData\Local\Temp\2024-10-13_56fd67a1c8858bcaff061bce33f9bb81_cobalt-strike_ryuk.exe & exit2⤵
- Suspicious use of WriteProcessMemory
PID:1476 -
C:\Windows\system32\timeout.exetimeout 53⤵
- Delays execution with timeout.exe
PID:4728
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