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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
26/01/2024, 02:22
Behavioral task
behavioral1
Sample
2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe
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Size
56KB
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MD5
06c864b764d59b4b4f05d39fc7171b2e
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SHA1
74afbdf27f7108ed0ed136810a78dd708be237df
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SHA256
309151278f65310dfe4156c365285fc4b7dc34dcf712f76e761dccd8d59a1526
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SHA512
9ca00be67a3b6250968eda23aaf084aa27faecab261fa6c7c20e40ebb84f88d3c2e469b5b1b006011b33cdfb87d9ffc2df72f70b1f01d74d63193df6d37417fa
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SSDEEP
768:zQz7yVEhs9+syJP6ntOOtEvwDpjFeV0ZOfcpLzbO:zj+soPSMOtEvwDpj4yzbO
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral2/memory/1604-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001000000002315e-13.dat CryptoLocker_rule2 behavioral2/memory/1604-19-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/224-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001000000002315e-16.dat CryptoLocker_rule2 behavioral2/memory/224-55-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral2/memory/1604-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x001000000002315e-13.dat CryptoLocker_set1 behavioral2/memory/1604-19-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/224-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x001000000002315e-16.dat CryptoLocker_set1 behavioral2/memory/224-55-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral2/memory/1604-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/files/0x001000000002315e-13.dat UPX behavioral2/memory/1604-19-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/224-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/files/0x001000000002315e-16.dat UPX behavioral2/memory/224-55-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation 2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation misid.exe -
Executes dropped EXE 1 IoCs
pid Process 224 misid.exe -
resource yara_rule behavioral2/memory/1604-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x001000000002315e-13.dat upx behavioral2/memory/1604-19-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/224-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x001000000002315e-16.dat upx behavioral2/memory/224-55-0x0000000000500000-0x0000000000510000-memory.dmp upx -
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 1604 wrote to memory of 224 1604 2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe 89 PID 1604 wrote to memory of 224 1604 2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe 89 PID 1604 wrote to memory of 224 1604 2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1604 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:224
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
38KB
MD5477e073411aace68923bbd6307aaf11a
SHA11928f71a969eb4ee4d71d9696e1a6e4fe7934948
SHA25605a02238519914ab5fd3f6112ee6e6c51b110a573f0784e4f6084d020e061a7c
SHA5127aa42db0267d79f7023f3a4250223d403a48ddc7c4e262ce2fa1094ae0a45c253d420aa87e676197f95b562cd6ff88dcd777480ad6688948b0508177509f2f9c
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Filesize
56KB
MD578473c3606232bdb7ba29c1e75254d17
SHA1b38153659d16b265bc60bd9b4cab200910abf04c
SHA256dfba0deb925e32d254580af4f5bcfd106b5826ff49bf3b13f93e8e3afcc8a511
SHA5129493cd0b0f97506f9eb69b3e9a9bf5e47542e83e1309fe97e28ba7adb593114102741464ceb5601c2b807fed80d3689fe87adb72ab990416c40eb620ad91773c