Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
03/06/2024, 10:33
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe
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Size
65KB
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MD5
7e01817dc3ddb01bff675c1974210154
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SHA1
b014211997cf91de72659266077dc5f492875846
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SHA256
81b87de5f20ca243f95d8d87597191a84f99843b97d6b7004415bab761fc9979
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SHA512
5a1e4d639bd843595b16777172ca0abadf4ccfe98dd0958b6a8624a9882954b07013cd788716f76434eb91e47d69c83f317eea5e7a83e8791d55feebb3ca5096
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SSDEEP
1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsiD:BbdDmjr+OtEvwDpjM8e
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2036-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d00000001226c-11.dat CryptoLocker_rule2 behavioral1/memory/2036-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2092-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2092-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2036-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2092-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2092-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2036-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000d00000001226c-11.dat UPX behavioral1/memory/2036-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2092-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2092-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2092 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2036 2024-06-03_7e01817dc3ddb01bff675c1974210154_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 2036 wrote to memory of 2092 2036 2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe 28 PID 2036 wrote to memory of 2092 2036 2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe 28 PID 2036 wrote to memory of 2092 2036 2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe 28 PID 2036 wrote to memory of 2092 2036 2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2092
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
65KB
MD5d57f541d8e4fbdc01b70f1af9594c1e9
SHA18724ac5296ce819aeaf3472c540213c4c52bbc3f
SHA256b1cd45893b63aa5a20fa469d78141cc49eed1b426f81c034d80289ef20a400a2
SHA512c46d5b2c2786414307038fc00ff13da7d12c7f7ee4994d04dd01abf63992c112e06bc25af1dbb17d6fd03a4aae35d266e4090ff00d5c6c8f59d491d84821c9e4