Analysis
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max time kernel
122s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
02/06/2024, 05:22
Behavioral task
behavioral1
Sample
2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe
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Size
57KB
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MD5
3d024fb7baaa334c2960f3fbeedd05fb
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SHA1
2bd256a8081615f46de79e90a1f31cf5518bd19d
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SHA256
5ec61f5a1d05c4c65b3416e73daa69b8453d62140cdadf5f3b967fd66cdb6ceb
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SHA512
200322915004cd627c2e5264fd8e6eebfa3cc83a70fa86c6baf92077ea1c072770d202ad7e5b383b9d6cf75a97d52be9c4ba79c35293660b3374f4f09c57d90a
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SSDEEP
768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlgzl:bP9g/xtCS3Dxx0nl
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2860-0-0x0000000000400000-0x000000000040E000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d000000012350-11.dat CryptoLocker_rule2 behavioral1/memory/2860-13-0x0000000000810000-0x000000000081E000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2116-17-0x0000000000400000-0x000000000040E000-memory.dmp CryptoLocker_rule2 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/2860-0-0x0000000000400000-0x000000000040E000-memory.dmp UPX behavioral1/files/0x000d000000012350-11.dat UPX behavioral1/memory/2860-13-0x0000000000810000-0x000000000081E000-memory.dmp UPX behavioral1/memory/2116-17-0x0000000000400000-0x000000000040E000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2116 gewos.exe -
Loads dropped DLL 1 IoCs
pid Process 2860 2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe -
resource yara_rule behavioral1/memory/2860-0-0x0000000000400000-0x000000000040E000-memory.dmp upx behavioral1/files/0x000d000000012350-11.dat upx behavioral1/memory/2860-13-0x0000000000810000-0x000000000081E000-memory.dmp upx behavioral1/memory/2116-17-0x0000000000400000-0x000000000040E000-memory.dmp upx -
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 2860 2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe 2116 gewos.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2860 wrote to memory of 2116 2860 2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe 28 PID 2860 wrote to memory of 2116 2860 2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe 28 PID 2860 wrote to memory of 2116 2860 2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe 28 PID 2860 wrote to memory of 2116 2860 2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_3d024fb7baaa334c2960f3fbeedd05fb_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2860 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2116
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
57KB
MD5c2f7c450456777d0bbd7c871567731db
SHA17e003d132fdacd1cbe4cc4daa0eb534f78523a45
SHA2565c10a9ac7d93af10f0979da619232bb83d4f0f01eb059fbcdd8f6bff8bcc86ee
SHA51233e9f599be7a6743265995c2d0ace6223ae0a508037d1181a8394506292275aa38b9cced192e67dfa795cbc1aea1908a4af04ed4db669a577a24bc354b6126ec