Analysis
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max time kernel
133s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
13-06-2024 02:24
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe
Resource
win10v2004-20240611-en
General
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Target
2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe
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Size
50KB
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MD5
dcb07ee7f4f5a3e50d6f0355bc0c1d7d
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SHA1
f92d9e53f287d142b24de66cc9b4d1ea1e0031c7
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SHA256
c93bbd33633c7febcaa99ddf9b844314cff1f8afa1a023da3cb6ce63ed7b1427
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SHA512
880d4921c30bb103e93b9664a2dff9f61a2144f218311c9a6ee25b73e2a07ddca3d93b6502a7f85a0962b2921e7d7963a35a3511eec783904fd688476d40ea4e
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vdXfxDD:X6QFElP6n+gJBMOtEvwDpjBtEdXfxDD
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000900000002359f-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000900000002359f-12.dat CryptoLocker_set1 -
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-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation 2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3408 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2044 wrote to memory of 3408 2044 2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe 89 PID 2044 wrote to memory of 3408 2044 2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe 89 PID 2044 wrote to memory of 3408 2044 2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_dcb07ee7f4f5a3e50d6f0355bc0c1d7d_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2044 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3408
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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 --field-trial-handle=4304,i,12594301322143882025,16832588342008839449,262144 --variations-seed-version --mojo-platform-channel-handle=4296 /prefetch:81⤵PID:4460
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
50KB
MD5623a5a4df126467de569c585c0d96da4
SHA1c6aabb372298d0425e93755a32880bef35c0e0e0
SHA2562a9ff92940b177389fceebdc13d09a0ea937b259cac4447397cf263abb41491a
SHA512328a308ad5302414a64751e49ab490c9fe891b1751b4920d574dca87b617757ea8890bc20232aea832482f87b6ca1d224b122b469f4fff191c4e4e992ae45b9b