Analysis
- max time kernel
150s - max time network
150s - platform
windows7_x64 - resource
win7-20240220-en - resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system - submitted
26/05/2024, 03:53
Static task
static1
4 signatures
Behavioral task
behavioral1
Sample
2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe
Resource
win7-20240220-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe
Resource
win10v2004-20240226-en
8 signatures
150 seconds
General
- Target 2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe
- Size 57KB
- Sample240526-ef3k8sea21
- SHA256 b80414f9014d0ceff4ee4f14c433797fba637c0b7984ccd7d6a507da9287f2a8
- MD5 bf3fb6d400a4d92aa174857933360e0b
- SHA1 dd0eaf10a009dc512cf8730a7ab2affd18c13cb3
- SHA512 5e2dc42ff0bc24dcefc517e0c14193ca831ccbb65cb1a17f8890d3e2423998fb18c235d920c453cf2e5b326b3d5cc4c02c01579ac102f9b686cd49889361b775
- SSDEEP 768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Gowfj8+:xj+VGMOtEvwDpjubEg1
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000013417-11.dat CryptoLocker_rule2 behavioral1/memory/3056-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2972-24-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 - Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c000000013417-11.dat CryptoLocker_set1 behavioral1/memory/3056-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2972-24-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 - Detects executables built or packed with MPress PE compressor 4 IoCs
resource yara_rule behavioral1/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x000c000000013417-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/3056-15-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2972-24-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 2972 misid.exe - Loads dropped DLL 1 IoCs
pid Process 3056 2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3056 wrote to memory of 2972 3056 2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe 28 PID 3056 wrote to memory of 2972 3056 2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe 28 PID 3056 wrote to memory of 2972 3056 2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe 28 PID 3056 wrote to memory of 2972 3056 2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3056 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2972
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path \Users\Admin\AppData\Local\Temp\misid.exe
- Size 58KB
- SHA256 e7c56123650f81a5d57df692af3020b669fe8b6359a53d1f3bd2769939bff85d
- MD5 b43bb30263a5ad7a9885ca8b2574578c
- SHA1 60a62df8f68949d1861f80549a3d73de9bd05870
- SHA512 855ceed0361f016cb0fbf384b392bbe9f504c8f38e48bf94382b7c034fc819b75746e7ee6f85e37e0c6b175cd8e4b43005c7b625097f3e785e1573fa8dfe06d1
- SSDEEP 768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Gowfj8a:xj+VGMOtEvwDpjubEgJ
- MD5 SHA1 SHA512 SSDEEP