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
11-05-2024 12:32
Behavioral task
behavioral1
Sample
2024-05-11_e4c05ee94b87eb67b624a48aacb6d249_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-11_e4c05ee94b87eb67b624a48aacb6d249_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-11_e4c05ee94b87eb67b624a48aacb6d249_cryptolocker.exe
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Size
90KB
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MD5
e4c05ee94b87eb67b624a48aacb6d249
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SHA1
fa541b03512fad9578c2e7211a4cea83990f5275
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SHA256
f015a523fad936fcebc7d36d4f28689e4fa2d556dae2b49792b7298b3261a0a0
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SHA512
a0b5b167d1063150997ba327b572049f43979fecb15dc872a1ba6ef148e4296b27b1851e82200f365442aee906014e4371f6a2a46858ff694e2f7da403b75cc2
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SSDEEP
1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAHc:n6a+1SEOtEvwDpjYYvQd2P8
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2416-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000012286-11.dat CryptoLocker_rule2 behavioral1/memory/2416-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2936-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2936-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2416-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a000000012286-11.dat CryptoLocker_set1 behavioral1/memory/2416-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2936-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2936-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2416-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000a000000012286-11.dat UPX behavioral1/memory/2416-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2936-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2936-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2936 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2416 2024-05-11_e4c05ee94b87eb67b624a48aacb6d249_cryptolocker.exe -
resource yara_rule behavioral1/memory/2416-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000a000000012286-11.dat upx behavioral1/memory/2416-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2936-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2936-26-0x0000000000500000-0x0000000000510000-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 WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2416 wrote to memory of 2936 2416 2024-05-11_e4c05ee94b87eb67b624a48aacb6d249_cryptolocker.exe 28 PID 2416 wrote to memory of 2936 2416 2024-05-11_e4c05ee94b87eb67b624a48aacb6d249_cryptolocker.exe 28 PID 2416 wrote to memory of 2936 2416 2024-05-11_e4c05ee94b87eb67b624a48aacb6d249_cryptolocker.exe 28 PID 2416 wrote to memory of 2936 2416 2024-05-11_e4c05ee94b87eb67b624a48aacb6d249_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-11_e4c05ee94b87eb67b624a48aacb6d249_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-11_e4c05ee94b87eb67b624a48aacb6d249_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2416 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2936
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
90KB
MD5b1c0c84aecc279c1344715eadf6576a0
SHA149e9f91a9b2b9555bb80663c7dac6296354ff6a0
SHA2569622fbda3a5e93bddba8f7ecdde545ffa38bd028290fe4f7481c16c119b447dd
SHA51216b1477997759de0b863894b155a294f1b249cd9b5b27d0edfaee405a1e8b08a2ac04d95d31c7e201c8739a9956408e62b539dbf3eb13351e885a13ad16d7567