Analysis
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max time kernel
150s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
26/05/2024, 03:50
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe
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Size
44KB
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MD5
acb5f9593fcbd0f21f2215510aead60e
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SHA1
6876dea9006e689cf85edbcf6e15366178d60c68
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SHA256
352735d3a0c69ef97f9d6f58f81db95c0ce112b1f008d01e4e7ae063bc35f2a6
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SHA512
574971b211a42d78551a302290d89db32324c75cedcbdb17dc353e457e92db5dbe46cbf581ced577cd09a00b6278b68588832792e7ceed3ed31291bba32a5470
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SSDEEP
384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIk:bm74zYcgT/Ekn0ryfjY
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1288-0-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000023400-13.dat CryptoLocker_rule2 behavioral2/memory/1288-17-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2416-26-0x0000000008000000-0x000000000800D000-memory.dmp 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2416 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 1288 wrote to memory of 2416 1288 2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe 85 PID 1288 wrote to memory of 2416 1288 2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe 85 PID 1288 wrote to memory of 2416 1288 2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-26_acb5f9593fcbd0f21f2215510aead60e_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1288 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:2416
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
44KB
MD5e681514b47dacff2c328674ec5afdd36
SHA19ed4acdea0a9bfb1d363298ca16e52a550edd060
SHA256479d78e41422c92adb94c6b482ab4109c80da31fb3e4839dbf74e82c03da6b55
SHA5121adf09eb5dc56f6c0ea6cce616e0846dbabcbe07441ad1ebee45ac9f342ba2c4852bb63cdb291a1456b21f7bcf0427512b0e1179675995aa9d0c1d7506aa02f4