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Analysis
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max time kernel
133s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
12/02/2024, 19:23
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-12_4f27026f7924caf742d6a7b7f970c872_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_4f27026f7924caf742d6a7b7f970c872_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-12_4f27026f7924caf742d6a7b7f970c872_cryptolocker.exe
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Size
59KB
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MD5
4f27026f7924caf742d6a7b7f970c872
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SHA1
d440803a63ebba428f27d9636dcac6433cedbe40
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SHA256
2f21df43f92490fd774b82ed58369a4f942db7bd5be2a75111025d50153c426f
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SHA512
e116fa2aaddee0c61435d975e2af2df46084fd98eb9e7c1f93abb6ad4bd641902e6ea191fdc271112dd230462c4585d4b625360b0ee19b2131ef7c4ddcc188df
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SSDEEP
1536:ZzFbxmLPWQMOtEvwDpj38lD/cMAT+lBhn:ZVxkGOtEvwDpjI
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000e000000023145-12.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation 2024-02-12_4f27026f7924caf742d6a7b7f970c872_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 4988 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 2216 wrote to memory of 4988 2216 2024-02-12_4f27026f7924caf742d6a7b7f970c872_cryptolocker.exe 85 PID 2216 wrote to memory of 4988 2216 2024-02-12_4f27026f7924caf742d6a7b7f970c872_cryptolocker.exe 85 PID 2216 wrote to memory of 4988 2216 2024-02-12_4f27026f7924caf742d6a7b7f970c872_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_4f27026f7924caf742d6a7b7f970c872_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_4f27026f7924caf742d6a7b7f970c872_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2216 -
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:4988
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
59KB
MD57ee602dfad9cfc37a9f874a1ebaf6b65
SHA148665d915ccf00facad37e836a9baf036daef549
SHA256bb980cdb8a63a25652959b338b5d288de3e8ce133cae76759ccac718a3e1ab49
SHA5124f3acd45d1e13210aac4860b0569c75d02c58572f793e6dc1cdb1b02901596edc33edf8ac33f1d77c7b4424aaf2b06fbb428fb21e10798dbd420e3f1e06dbacd