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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
23/05/2024, 22:22
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-23_0db333c2c2153c6b4b7d2b1659d50cfa_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-05-23_0db333c2c2153c6b4b7d2b1659d50cfa_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-23_0db333c2c2153c6b4b7d2b1659d50cfa_cryptolocker.exe
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Size
54KB
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MD5
0db333c2c2153c6b4b7d2b1659d50cfa
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SHA1
af6d7acddc1404fe362f873066118220f431d5fa
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SHA256
1eed0bad17a92c4c08a8a86082b58925979395d38cb348191c674e3d33900c30
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SHA512
27ff0e2d2ed45d8a4cd5bd2caff2f9013bc7eda66ce0d8d661d6cb63628689b6e17d832f470c1e833d8dfde6a41df532622f768c945ed325fd720ed013d41733
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIX6E5:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7w
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000b000000012279-10.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x000b000000012279-10.dat CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
pid Process 2444 hurok.exe -
Loads dropped DLL 1 IoCs
pid Process 1740 2024-05-23_0db333c2c2153c6b4b7d2b1659d50cfa_cryptolocker.exe -
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 1740 2024-05-23_0db333c2c2153c6b4b7d2b1659d50cfa_cryptolocker.exe 2444 hurok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1740 wrote to memory of 2444 1740 2024-05-23_0db333c2c2153c6b4b7d2b1659d50cfa_cryptolocker.exe 28 PID 1740 wrote to memory of 2444 1740 2024-05-23_0db333c2c2153c6b4b7d2b1659d50cfa_cryptolocker.exe 28 PID 1740 wrote to memory of 2444 1740 2024-05-23_0db333c2c2153c6b4b7d2b1659d50cfa_cryptolocker.exe 28 PID 1740 wrote to memory of 2444 1740 2024-05-23_0db333c2c2153c6b4b7d2b1659d50cfa_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-23_0db333c2c2153c6b4b7d2b1659d50cfa_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-23_0db333c2c2153c6b4b7d2b1659d50cfa_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1740 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2444
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
54KB
MD547e5344e9dd3ec0ca9dce8c56c9593e9
SHA117fe2e42cd072642a58df768133f2b08a7823828
SHA2560159cf9bc6ce3131653ea1ca971effbb1ce113a8d9d5ffdc5e8676c7fd6426a4
SHA51293f6d8abb65c0dfd8eb25fc578214a3f3765b1b0b624541d06a6aa78947681dd2e1e124dfa6a29ae7647676fbe1b855d5aaa43d9a4579fc7b9a916beb3bd35f7