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Analysis
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max time kernel
139s -
max time network
172s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
19/04/2024, 10:27
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-19_9356e29e0886134b47a7cea4c1d12223_cobalt-strike_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-19_9356e29e0886134b47a7cea4c1d12223_cobalt-strike_ryuk.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-19_9356e29e0886134b47a7cea4c1d12223_cobalt-strike_ryuk.exe
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Size
994KB
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MD5
9356e29e0886134b47a7cea4c1d12223
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SHA1
f13635bab18d1296e41930b9fe91eeaace9a233a
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SHA256
f7ba16f406b37edb6cdd93e0796d7e9854330797a5eda43bc731de5e10817c92
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SHA512
65b7da80196cf1f22f25028342548ba061dd4f3993e6c3fc0b5e6f167beb6519ff08fdfb9a0e55f2c9fc0d7dcaf85ce3de9d03417ed28f38ac10b88e91a545d5
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SSDEEP
12288:KUGqQLlK62UJsp77YPmRcbo7cREtMTmkJR4Do07Y86gw5CtCjX+NLuFhNpBeZT3X:zYRO7Y2cb+cREOSkQ/7Gb8NLEbeZ
Malware Config
Signatures
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Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\System32\alg.exe 2024-04-19_9356e29e0886134b47a7cea4c1d12223_cobalt-strike_ryuk.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeTakeOwnershipPrivilege 5060 2024-04-19_9356e29e0886134b47a7cea4c1d12223_cobalt-strike_ryuk.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-19_9356e29e0886134b47a7cea4c1d12223_cobalt-strike_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-19_9356e29e0886134b47a7cea4c1d12223_cobalt-strike_ryuk.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
PID:5060
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4232 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:81⤵PID:4912