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Analysis
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max time kernel
146s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
29/01/2024, 16:05
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe
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Size
44KB
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MD5
dcb20518dc2b4c3e9ad260c77d9d0308
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SHA1
faf31b5db444a5b2519c7464f3dd37cbbdd086e8
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SHA256
a2068c381bcd1b588544799a8e72cdcb7e3c2dc7bd3f3f531a6ce8d9fc7040e4
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SHA512
478a3aaefd6cf910083d368b1f0d796f46612d482fa696fc2043f5e5f9126a21556e017290960a4b338a8789bce83a4a1eb9025fddc6cc2b47cba6e453e6d2a0
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SSDEEP
768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YlPvn:bgGYcA/53GAA6y37QX
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000c00000002317f-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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation 2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1480 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 4396 wrote to memory of 1480 4396 2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe 84 PID 4396 wrote to memory of 1480 4396 2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe 84 PID 4396 wrote to memory of 1480 4396 2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-29_dcb20518dc2b4c3e9ad260c77d9d0308_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4396 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- 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
44KB
MD51274db7164562bfcee4139dc1fafe6fe
SHA16df064933f1147c1349d3c7453dcfced6511f746
SHA2567fcf92d6883885f7998def3d359b0bc2ed242453f0103ee849246cb3c893657f
SHA5128cc235b640c8fde056aca24a68cfc424213e5262d787b4339823afe9f75aa91a0b8cad44cda039f3ea801e89ecc761f9bfd0771e0b8a617a14aeaf92126bcca1