Analysis
- max time kernel
148s - 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
06/06/2024, 21:30
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe
Resource
win7-20240508-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe
Resource
win10v2004-20240508-en
6 signatures
150 seconds
General
- Target 2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe
- Size 48KB
- Sample240606-1cwt6scc4v
- SHA256 3ee8cf5e3c2e23c969f5dc01fcdd519fd29f843eb24602ce599c5882b53de3f9
- MD5 8ad7c726133cfa37df20b996b7b3bb3f
- SHA1 732c569d22d3833807bafba13eee43a3d8e189b5
- SHA512 c2f0417d3c17e3c277908c9f3b8c16547ad144b55fbc5ee506010d14c97c451fc951f6fb8d30fe339592576684c5067082c7fca7965cd400d995fb10ef4bba40
- SSDEEP 1536:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3W7eR:V6a+pOtEvwDpjvW
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000500000002326f-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000500000002326f-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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation 2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe - Executes dropped EXE 1 IoCs
pid Process 1040 asih.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3588 wrote to memory of 1040 3588 2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe 81 PID 3588 wrote to memory of 1040 3588 2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe 81 PID 3588 wrote to memory of 1040 3588 2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe 81
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3588 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1040
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\asih.exe
- Size 48KB
- SHA256 e9847acaf9feb2314f4b21353fa77414776abad43854b5133843ac2227b6df49
- MD5 dd6b21df888b920b4e032819cce411b4
- SHA1 82512864f341e8a1eebec87bb0e5d61789245abb
- SHA512 d63c26a1968c68507f45c74bbbc4ec568a30dce11988920ba25255e7be7418981ddb5b52d91cb4c854928cb7da7aba30182c071a835fd31b793b7c852a2aa6f3
- SSDEEP 1536:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3W7e0:V6a+pOtEvwDpjv/
- MD5 SHA1 SHA512 SSDEEP