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Analysis
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max time kernel
143s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
11/04/2024, 05:44
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-11_f3ede63d8fdbb2c3854077407495870a_cobalt-strike_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-11_f3ede63d8fdbb2c3854077407495870a_cobalt-strike_ryuk.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-11_f3ede63d8fdbb2c3854077407495870a_cobalt-strike_ryuk.exe
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Size
796KB
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MD5
f3ede63d8fdbb2c3854077407495870a
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SHA1
579e75d782340ccdd8c6b2a2640f678672e3301e
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SHA256
8757c333fe95dcb1ddd4d4db9474f66c9e8bdc4271e4e781dc79cd20aedc1914
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SHA512
e6597f50244277e54d440d55d89f649ae070ea2930ddee2b18be5801b44247d9eec33eb96ec5de77c02aeb0ef2f25ea7283ef14c19bb7a2b60801258e71999b5
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SSDEEP
12288:GXDCAZzP/w24lhaPStDCf7O4TsH+mGadTSdZKKQWOs5NgsPjYc+igyjj6n4zaD:RANw243abpT0rdwQWOwN7PPpgyqn4zI
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 2024-04-11_f3ede63d8fdbb2c3854077407495870a_cobalt-strike_ryuk.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeTakeOwnershipPrivilege 4752 2024-04-11_f3ede63d8fdbb2c3854077407495870a_cobalt-strike_ryuk.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-11_f3ede63d8fdbb2c3854077407495870a_cobalt-strike_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-11_f3ede63d8fdbb2c3854077407495870a_cobalt-strike_ryuk.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
PID:4752
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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=3820 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:81⤵PID:2444