Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
02/06/2024, 04:46
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe
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Size
42KB
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MD5
de73c206a177dd9046e442d80d52e9a4
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SHA1
c3e668869846689b1b044749b1c548f4eadb8c8a
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SHA256
e813453fc91ce9fce4ed3cb7302b1118e4dcb571e27c5a48d132048501930bdc
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SHA512
27c926c1bacd4486e72ff717fc333764a42b1fa2e0826d467d993ecfca2addacd2861ca6b885680b52c2e76f933acd84ec7fbb8c48998be2243fe5583e93bf90
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCyD/95m:X6QFElP6n+gJQMOtEvwDpjBsYK/fbDFk
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000800000002348c-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000800000002348c-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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation 2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4608 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 4556 wrote to memory of 4608 4556 2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe 82 PID 4556 wrote to memory of 4608 4556 2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe 82 PID 4556 wrote to memory of 4608 4556 2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4556 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4608
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
42KB
MD505d1b06ac82138720beed769bb7b2e4e
SHA1ccd7f26b4b74b0e83b9cda92a0a6af0aaee9cc92
SHA25632acff85e503e4a171e4fd98461983393d79382b23b692476662f2e08e488915
SHA5124171c75b87bce52986274959171f21e38e517bba287b8cff55cbf423505f2c35dc9718b868cd8544060576929d61fe7520211bd97b10c28a451ca597e74d3cc9