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Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
29/05/2024, 23:31
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe
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Size
44KB
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MD5
83aa3b045e7da1a7911be634a18491df
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SHA1
c541207982ab3317911a6b5cede2bad3ffac065f
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SHA256
51f0347d2f56a888b2641e3e960ada8d45073009e34b9ce8e8cea40497fb63a6
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SHA512
0ec947d8d291234b03e8a50baa712e939fbed232ee159ece9bd599d43494af046fc3e6441c6eb478314ef2693dbe38b3d003c895cafd82d33d0759dcf771d614
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SSDEEP
768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAIie0E:bCDOw9aMDooc+vAl4
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1044-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000015d31-11.dat CryptoLocker_rule2 behavioral1/memory/2384-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1044-15-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2384 lossy.exe -
Loads dropped DLL 1 IoCs
pid Process 1044 2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1044 wrote to memory of 2384 1044 2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe 28 PID 1044 wrote to memory of 2384 1044 2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe 28 PID 1044 wrote to memory of 2384 1044 2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe 28 PID 1044 wrote to memory of 2384 1044 2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1044 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:2384
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
44KB
MD5b2fc8a0bf0d9b525e324184b57573f45
SHA15324a183973d0c13edbec3761762497497abe752
SHA25610c64320407757bd1e49d8cf3361d9c68f49415afeefcfdc5a6e292b960995ae
SHA5127650489479c1f413eb063f7a3fbbc44e06aadebaffb328a6654c588e6511079a367e40585b222886202c0d3ef3bb2ddec22a664737c6406c51870fcfeb8de87f