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Analysis
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max time kernel
135s -
max time network
130s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
10/05/2024, 23:27
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-10_de7a43d8a2476f680675235ec58d8b0a_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-10_de7a43d8a2476f680675235ec58d8b0a_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-10_de7a43d8a2476f680675235ec58d8b0a_cryptolocker.exe
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Size
42KB
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MD5
de7a43d8a2476f680675235ec58d8b0a
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SHA1
36bca03e79bd61f527f8834ff02fda131d497184
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SHA256
14ff3d318c36c89873800055c34aefc2fd40c84879b99e5ac88782a7b7188698
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SHA512
195446d1dcba561672a62513580cce54e224e50123f0c767d5fe6069937268f752471b1ba7279ba42d0b01fc6d1232e7ea9122863dc6c9d1475217aa344c24f2
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SSDEEP
768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFqZrpKy:bxNrC7kYo1Fxf3s05rwxbFE
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000023297-12.dat CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation 2024-05-10_de7a43d8a2476f680675235ec58d8b0a_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation pissa.exe -
Executes dropped EXE 1 IoCs
pid Process 1480 pissa.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 756 wrote to memory of 1480 756 2024-05-10_de7a43d8a2476f680675235ec58d8b0a_cryptolocker.exe 83 PID 756 wrote to memory of 1480 756 2024-05-10_de7a43d8a2476f680675235ec58d8b0a_cryptolocker.exe 83 PID 756 wrote to memory of 1480 756 2024-05-10_de7a43d8a2476f680675235ec58d8b0a_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-10_de7a43d8a2476f680675235ec58d8b0a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-10_de7a43d8a2476f680675235ec58d8b0a_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:756 -
C:\Users\Admin\AppData\Local\Temp\pissa.exe"C:\Users\Admin\AppData\Local\Temp\pissa.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:1480
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
42KB
MD5d2068f2eadab600697650ceb00a7a17c
SHA17dca885e03f05f48d84bf7a173ea9b3f23a8d940
SHA256b8e0531f8c2a5f0368bd803d7e5fde93e455912074610cc56217d9db3cdecf23
SHA512d981abed024cb43273afd0d44f8823c4c92548063ed2009376c647e32ea03e18d60a502e516cfc09c66394435487080e9d06c30ccc9c389d3e4c49b5717b3288
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Filesize
261B
MD511bed1c06d8f4680de5154405be20365
SHA19c3095f1aa0b02924c23592d1e86673bb0081ca1
SHA256bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666
SHA512050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8