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Analysis
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max time kernel
150s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
29/05/2024, 15:42
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe
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Size
68KB
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MD5
acfdf5809a6dadc684947ff3af9bb81a
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SHA1
d977194d6f342ab42c8290c803be60315b90375b
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SHA256
d09150c8e0bb5c305c5b9ba58446eb16b0d15b77d7e70f9b540aa4063d8b8691
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SHA512
e474f432292edbf7e962747ed24835b76a650ae58c223707386da4aa738d43e0f1d27b3bb4295243f2b47c9ae50657c83c774ca7770590c53e0625bb28124c41
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLEk:aq7tdgI2MyzNORQtOflIwoHNV2XBFV78
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000e000000014698-10.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x000e000000014698-10.dat CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
pid Process 2540 hurok.exe -
Loads dropped DLL 1 IoCs
pid Process 3008 2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_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 3008 2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe 2540 hurok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3008 wrote to memory of 2540 3008 2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe 28 PID 3008 wrote to memory of 2540 3008 2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe 28 PID 3008 wrote to memory of 2540 3008 2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe 28 PID 3008 wrote to memory of 2540 3008 2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3008 -
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:2540
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
68KB
MD55a9c8cc6628de759b72f1123f462c2ac
SHA1f634037ec726e680a39e25e8c4fd38f29ea3b941
SHA2562e09fa541af4ac44b7f357ea9fe70605b00e32e314a8ceedb13f1384c2d5528e
SHA5126baed324d487091b92f267cc2e09cf2c22cf01e067d2e3126eca71f43c33d9d988d1f326c03b1e83c183b1210b5f408389714885565941bbabf4cbe47eb0f7a1