Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
13-06-2024 02:54
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-13_7749bc1e7c42c536d05977b77fe9b7df_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-06-13_7749bc1e7c42c536d05977b77fe9b7df_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-13_7749bc1e7c42c536d05977b77fe9b7df_cryptolocker.exe
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Size
786KB
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MD5
7749bc1e7c42c536d05977b77fe9b7df
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SHA1
307e5440c63ee29294ed40eac402e9ff089150fe
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SHA256
71c870e5917f1267c6c70fcbd3937e88210a72296f6ffd904feb1949f5b2bd96
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SHA512
104aad0b26a5c0cd7866a80f1ed6e62e8850d3b93fabab13a66103d23d7b711eebb9e721ed2016e766b72ca2f39742f8465f2bb8c4112f56bc2e5af2e9fe0b2f
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SSDEEP
24576:aHQVCB9lVF1lVF1lVFkUEi019za5F+DLK9bygw6X/pj:aHAg9lVF1lVF1lVFkUEiiCX/Z
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000022f51-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0008000000022f51-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-06-13_7749bc1e7c42c536d05977b77fe9b7df_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 456 misid.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 1500 wrote to memory of 456 1500 2024-06-13_7749bc1e7c42c536d05977b77fe9b7df_cryptolocker.exe 82 PID 1500 wrote to memory of 456 1500 2024-06-13_7749bc1e7c42c536d05977b77fe9b7df_cryptolocker.exe 82 PID 1500 wrote to memory of 456 1500 2024-06-13_7749bc1e7c42c536d05977b77fe9b7df_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-13_7749bc1e7c42c536d05977b77fe9b7df_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_7749bc1e7c42c536d05977b77fe9b7df_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1500 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:456
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
786KB
MD5dcbe97c20f574391ffce247103b9b645
SHA14a8c64548d99028999efc412c797444919ffa4b8
SHA256415e30dfd53d4d78229cf8b018eec97ebcfdfec2d4d99b3f32cbd5e941258434
SHA512296939c94c6a9fa2c7a929d3568db039e93ce6f94688978af5e8e230817f276ae2d79ccb801e256c6e8f43e61e1475baa39426f53d43f181b6ff70324ee78b9b