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Analysis
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max time kernel
150s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
10/10/2024, 02:43
Behavioral task
behavioral1
Sample
2024-10-10_070d41a327b452e2321a9becb6e2af75_cryptolocker.exe
Resource
win7-20240704-en
General
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Target
2024-10-10_070d41a327b452e2321a9becb6e2af75_cryptolocker.exe
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Size
28KB
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MD5
070d41a327b452e2321a9becb6e2af75
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SHA1
c71279ce8487af60b91d4dd5f0ff41cfd9cdbede
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SHA256
3abff1298189d27f279d164cfc8ce2aaede0bfa588d49b66ebcaff4287d45931
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SHA512
9a2670b558f874e20da7d1d004dfed2b6b89f029264a12cf88e9a48cad7c0f6f1b1669455890279ce98bd988500a41ab4ecacb637d90d4af06d143721a243655
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SSDEEP
384:bFgFQrdSmuQ8WFqxpj5cpyIuYxVe3FSr+OLfjDp+0g/HNblX7QCOBqy:bFgm5zusFUB2preAr+Ofjg0STX73OBqy
Malware Config
Signatures
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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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation 2024-10-10_070d41a327b452e2321a9becb6e2af75_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 668 lossy.exe -
resource yara_rule behavioral2/memory/4260-0-0x0000000008000000-0x000000000800E000-memory.dmp upx behavioral2/files/0x000c000000023b8f-13.dat upx behavioral2/memory/4260-17-0x0000000008000000-0x000000000800E000-memory.dmp upx behavioral2/memory/668-26-0x0000000008000000-0x000000000800E000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-10-10_070d41a327b452e2321a9becb6e2af75_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language lossy.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4260 wrote to memory of 668 4260 2024-10-10_070d41a327b452e2321a9becb6e2af75_cryptolocker.exe 86 PID 4260 wrote to memory of 668 4260 2024-10-10_070d41a327b452e2321a9becb6e2af75_cryptolocker.exe 86 PID 4260 wrote to memory of 668 4260 2024-10-10_070d41a327b452e2321a9becb6e2af75_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-10_070d41a327b452e2321a9becb6e2af75_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-10_070d41a327b452e2321a9becb6e2af75_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4260 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:668
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
28KB
MD5bce9e13107958d42be245081802c7219
SHA103533b7da1885e04e22bce238fba139ccfc9226b
SHA256b3c33d51dbb271da115a567f70ecbac03a2574e47c686b0f8ea9f3ea69a8d04d
SHA5123c67e406497d1173773b48b1370260362e801008f6a2773c3175f1d2af51ca2a6dbeade332c3ec120133eb92d4eb5bf97e4ebaf14aa72d4019be28eba16e462d