Analysis
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max time kernel
93s -
max time network
125s -
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, 04:47
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-02_e43ba61d976c332eb7b89c61e81aaa0d_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-02_e43ba61d976c332eb7b89c61e81aaa0d_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-02_e43ba61d976c332eb7b89c61e81aaa0d_cryptolocker.exe
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Size
34KB
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MD5
e43ba61d976c332eb7b89c61e81aaa0d
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SHA1
c76e97bdbb4b05bae41257c384e955c6fb080371
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SHA256
340f99b70a640549c7d022ab222d7d4d1b49dfb4597ac26fa97aaa309a3a7038
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SHA512
a8079247798f30ce5d09eec94f61febff27bf61dbe9f3ba0631e6019b88a05dbaeaf537c1272db71206ee4ef3139bc853635c49dc64f41ca3cd5c44872b22b26
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SSDEEP
768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5jm+:bxNrC7kYo1Fxf2rYPv
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000600000002327d-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation 2024-06-02_e43ba61d976c332eb7b89c61e81aaa0d_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation pissa.exe -
Executes dropped EXE 1 IoCs
pid Process 4956 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 2896 wrote to memory of 4956 2896 2024-06-02_e43ba61d976c332eb7b89c61e81aaa0d_cryptolocker.exe 81 PID 2896 wrote to memory of 4956 2896 2024-06-02_e43ba61d976c332eb7b89c61e81aaa0d_cryptolocker.exe 81 PID 2896 wrote to memory of 4956 2896 2024-06-02_e43ba61d976c332eb7b89c61e81aaa0d_cryptolocker.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-02_e43ba61d976c332eb7b89c61e81aaa0d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_e43ba61d976c332eb7b89c61e81aaa0d_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2896 -
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:4956
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
34KB
MD5f8527a505992a443719422618426cb3b
SHA1087599375d4d3c4cbe135c48f83e6fc31228e5a2
SHA256ffc9014cd2bbc2aa252ae46f65a1e820664fd2d64d0aa8185a414863354ad5e0
SHA5120624eee51738b318f35104059068af81afc912bfe0af491013bdb6ba7464c1a0ff55e746cd16b10136fd7cd38607f0a9a0b6b1ff5d81bfb9581f391db7372636
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Filesize
261B
MD511bed1c06d8f4680de5154405be20365
SHA19c3095f1aa0b02924c23592d1e86673bb0081ca1
SHA256bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666
SHA512050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8