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Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
19/04/2024, 02:02
Static task
static1
Behavioral task
behavioral1
Sample
b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe
Resource
win10v2004-20240412-en
General
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Target
b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe
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Size
39KB
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MD5
6eb292a566dbb3f17f8afe31aa2eb748
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SHA1
2551636f4eeac900f2e66eb31e5e7f8fffda94bf
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SHA256
b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe
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SHA512
ec3dfb5647bdf837a7208f27808bf39469383e1ad4b64e19679b53ac717e814780f84c9df412fad17b0b01ccc9db49fc4a33b71215caa64d4c77c02d1e799dae
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SSDEEP
768:bA74zYcgT/Ekd0ryfjPIunqpeNswmT3Hw2Ag:bA6YcA/X6G0W143Qlg
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00080000000233fa-12.dat CryptoLocker_rule2 -
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-1-5-21-4092317236-2027488869-1227795436-1000\Control Panel\International\Geo\Nation b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe -
Executes dropped EXE 1 IoCs
pid Process 1176 hasfj.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 2796 wrote to memory of 1176 2796 b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe 86 PID 2796 wrote to memory of 1176 2796 b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe 86 PID 2796 wrote to memory of 1176 2796 b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe"C:\Users\Admin\AppData\Local\Temp\b5cef22f692aeddc0a6113dba513d0c54b4abbe21927c81a76ad66faa758e2fe.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2796 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:1176
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
39KB
MD5c0020901949696b7799e4c020e0bb254
SHA1284d8d1ee8c509495d3dfba70c7e48f33a48dc12
SHA2560f7b64723d2add7263dfe546da975886ad9895dd56452061f3540d8cf0f346da
SHA512e8fe31d996f7c834c8b6c46a388409dfd959cdb13c0ac16453b068194fed8f479f3a2bcce98c24628cd27c3cee555f4d8355a7a880ed558ef925565de5c212aa