Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
18-04-2024 05:12
Behavioral task
behavioral1
Sample
2024-04-18_c4f217d3dbb6508ad81666fd2dabe802_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-18_c4f217d3dbb6508ad81666fd2dabe802_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-18_c4f217d3dbb6508ad81666fd2dabe802_cryptolocker.exe
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Size
88KB
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MD5
c4f217d3dbb6508ad81666fd2dabe802
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SHA1
b98e1636dcf66d5d8e1a0d0cdc53647d74dccde0
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SHA256
fb001335afbb66bf1d0bd50fcb94d4465b4b0040a8224292adff3939b4c57c44
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SHA512
f5d328dedeae13421c2c80b0623aaab4f0cdf07fca0a6dd177203d4e43a6ed0ed3b119cfdfb68d72b8635feab41d30bbe05e6de099c2cc5d6f3509885be81f11
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgIk:AnBdOOtEvwDpj6zt
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2120-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2120-14-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c00000001224f-11.dat CryptoLocker_rule2 behavioral1/memory/2084-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2084-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2120-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2120-14-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c00000001224f-11.dat CryptoLocker_set1 behavioral1/memory/2084-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2084-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2120-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2120-14-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000c00000001224f-11.dat UPX behavioral1/memory/2084-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2084-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2084 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2120 2024-04-18_c4f217d3dbb6508ad81666fd2dabe802_cryptolocker.exe -
resource yara_rule behavioral1/memory/2120-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2120-14-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000c00000001224f-11.dat upx behavioral1/memory/2084-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2084-26-0x0000000000500000-0x000000000050F000-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 2120 wrote to memory of 2084 2120 2024-04-18_c4f217d3dbb6508ad81666fd2dabe802_cryptolocker.exe 28 PID 2120 wrote to memory of 2084 2120 2024-04-18_c4f217d3dbb6508ad81666fd2dabe802_cryptolocker.exe 28 PID 2120 wrote to memory of 2084 2120 2024-04-18_c4f217d3dbb6508ad81666fd2dabe802_cryptolocker.exe 28 PID 2120 wrote to memory of 2084 2120 2024-04-18_c4f217d3dbb6508ad81666fd2dabe802_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-18_c4f217d3dbb6508ad81666fd2dabe802_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-18_c4f217d3dbb6508ad81666fd2dabe802_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2120 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2084
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
88KB
MD5fcc56d34b41fb16ea5c2eb3eb534b1f4
SHA1b11f980730428ef81caf8c5dfac3dbbebdda8e47
SHA2566ff890dd28dc952f891e06a82e605cf10a56ebb6962daf56df62660896c759b6
SHA51267a40d62554f1cb0e4912ac4e6a124069a0fb18570bbc718e0b0683e4e767c84e1268de82485004dcf22321f533340f07e017b3d0839cde3399143424ed0197c