Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
05-05-2024 08:37
Behavioral task
behavioral1
Sample
2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe
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Size
62KB
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MD5
e8574fda6b4ddf235348bc12598d9c0a
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SHA1
0ae32d2d34c9a63042a93dcd52b2e0edf21ae64e
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SHA256
4e184d635dd2679d0258169ac290031ee1d441c7cd0c92d2e8160e6d101e0e81
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SHA512
ac57669ec3485909c71d5cfa2bbfa282fb371600834816c88c5d9c389cf32fce2b4deca51dddcfb815be03c44e87bde5db9f3955a74f33eabd499a199dbd4db4
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SSDEEP
768:P8mnjO6LsoEEeegiZPvEhHSG+gbum/kLyMro2GtOOtEvwDpjKvWxHCbSVaFn0jKF:P8mnK6QFElP6n+gymddpMOtEvwDpjYM+
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2804-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000014fe1-11.dat CryptoLocker_rule2 behavioral1/memory/2804-13-0x0000000001FA0000-0x0000000001FB0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2816-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/2804-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/2816-26-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/2804-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000014fe1-11.dat CryptoLocker_set1 behavioral1/memory/2804-13-0x0000000001FA0000-0x0000000001FB0000-memory.dmp CryptoLocker_set1 behavioral1/memory/2816-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/2804-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/2816-26-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/2804-0-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/files/0x000b000000014fe1-11.dat UPX behavioral1/memory/2804-13-0x0000000001FA0000-0x0000000001FB0000-memory.dmp UPX behavioral1/memory/2816-17-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2804-15-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2816-26-0x0000000000500000-0x000000000050F311-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2816 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2804 2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe -
resource yara_rule behavioral1/memory/2804-0-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/files/0x000b000000014fe1-11.dat upx behavioral1/memory/2804-13-0x0000000001FA0000-0x0000000001FB0000-memory.dmp upx behavioral1/memory/2816-17-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2804-15-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2816-26-0x0000000000500000-0x000000000050F311-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 2804 wrote to memory of 2816 2804 2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe 28 PID 2804 wrote to memory of 2816 2804 2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe 28 PID 2804 wrote to memory of 2816 2804 2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe 28 PID 2804 wrote to memory of 2816 2804 2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2804 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2816
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
62KB
MD59a1c8b39188557a91a3c93a7c0427eb7
SHA19768f2fad27ecb12f9f86e25371f510e1e9edd0c
SHA25666c313cc1befb6c1394638d5db45b08564939dce9fcbdbfe91ccb2abbb0be041
SHA5129d45fa77f97ab54cc2d829ebc4207a4f8b7dce5d9b05928468247eb8667ea67e09b21cb4cd1e5ed0c6039fdf63971e74c273eeb73faaf2565f57bca027c8bcd9