Analysis
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max time kernel
14s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
23/01/2024, 22:22
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-23_062f7e5f539e97ed86f6ed739fac28cf_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-23_062f7e5f539e97ed86f6ed739fac28cf_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-23_062f7e5f539e97ed86f6ed739fac28cf_cryptolocker.exe
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Size
33KB
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MD5
062f7e5f539e97ed86f6ed739fac28cf
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SHA1
1a23ee58fba50077240b16a000066d718ef268f3
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SHA256
94002d42b6ecd23f5b8d42676235f081150fc674cccc56ee4b57306bdf7a1d89
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SHA512
0057447b2125d35d197d12190761d34e59d9dfcb500f398beed1c58b1a144ba1bea9cd17e796303ed7825751ee8347f631e22ac82f4942808f2ac6406b8f09f9
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SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvyVX2:b/yC4GyNM01GuQMNXw2PSjHPqVX2
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x0009000000012252-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 1364 retln.exe -
Loads dropped DLL 1 IoCs
pid Process 1972 2024-01-23_062f7e5f539e97ed86f6ed739fac28cf_cryptolocker.exe -
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of UnmapMainImage 2 IoCs
pid Process 1972 2024-01-23_062f7e5f539e97ed86f6ed739fac28cf_cryptolocker.exe 1364 retln.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1972 wrote to memory of 1364 1972 2024-01-23_062f7e5f539e97ed86f6ed739fac28cf_cryptolocker.exe 28 PID 1972 wrote to memory of 1364 1972 2024-01-23_062f7e5f539e97ed86f6ed739fac28cf_cryptolocker.exe 28 PID 1972 wrote to memory of 1364 1972 2024-01-23_062f7e5f539e97ed86f6ed739fac28cf_cryptolocker.exe 28 PID 1972 wrote to memory of 1364 1972 2024-01-23_062f7e5f539e97ed86f6ed739fac28cf_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-23_062f7e5f539e97ed86f6ed739fac28cf_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-23_062f7e5f539e97ed86f6ed739fac28cf_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1972 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:1364
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
33KB
MD5fb05fab564e91e25ea9ff4cc3b22b429
SHA1a02f3457758d1708bb11f83cc769f69b1a0b5818
SHA256932f031cb2e8541a1ec6fed53b450ad99de60c37b1ed6fad033f72894949b409
SHA512e2e93b8ff09260de8896ce11fea697c8f419c8b31574cf26170f48866b97eeeb59b112ab2c6abc664128627ed33a386fdaff64b0b65411abddcf27027a82eb81