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Analysis
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max time kernel
143s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
22/02/2024, 07:27
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe
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Size
46KB
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MD5
407d73c1fa51057c9d3c135be661138b
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SHA1
d98a78660fcc663c1ba3e6e1ccbf03f8c908a0f9
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SHA256
8dbdd1d4443ee13dfae9bfa2dc3e8bbccb3fe73def96eea8a99f086957d71396
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SHA512
ad060ee84719e665fa2ec3fa22f7b1e842a79e514438cc50bed86d208679b948ca652c94f52858669b289cb984866c0220848d594f4c89eec3acf7ecf0226e01
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556Blg:X6QFElP6n+gJQMOtEvwDpjB0GIWSlg
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00090000000230f2-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x00090000000230f2-12.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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation 2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 336 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 5012 wrote to memory of 336 5012 2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe 83 PID 5012 wrote to memory of 336 5012 2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe 83 PID 5012 wrote to memory of 336 5012 2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-22_407d73c1fa51057c9d3c135be661138b_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5012 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:336
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD54f07dbdc45bd2a419bcc3e07a41ab561
SHA1bb288c29e5a5415eaeb05e9b0557e5f6d6057d0a
SHA256925507d9fe43e57cf69facec8e6443b89dacf156fb8882aca4d16a22b444b977
SHA512c00d444262c107dfeb5f59ae4c15406636027e21f43717917530ea72ffb90b9c709d8f4ed9cd32d46095fca39af4bfc12334575de7f134ad0cbaf316af14b027