Analysis
-
max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
19-04-2024 04:10
Behavioral task
behavioral1
Sample
2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe
Resource
win10v2004-20240226-en
General
-
Target
2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe
-
Size
68KB
-
MD5
850659d463094b653a5447beae0f6b91
-
SHA1
cd865a5bf64e8d713bfe0a92c84ceaedd1de6fba
-
SHA256
3dd59d0cd59eb8aeb9d2e3b047f22749681e45ae0e4018fd04bf068183c2d90c
-
SHA512
540fc63a0e27f7d8c4c1506fbcb38cdb7797479094c65adaeef0b121f519e9d319f278c2b0e1e97b978fbbbc978d4e88d30384dc7a16d7120fbb84b63d96c3ba
-
SSDEEP
768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1PZ:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAZ
Malware Config
Signatures
-
Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1656-1-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d000000012253-11.dat CryptoLocker_rule2 behavioral1/memory/1656-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2036-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2036-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1656-1-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d000000012253-11.dat CryptoLocker_set1 behavioral1/memory/1656-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2036-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2036-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1656-1-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000d000000012253-11.dat UPX behavioral1/memory/1656-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2036-17-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2036-27-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2036 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1656 2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe -
resource yara_rule behavioral1/memory/1656-1-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000d000000012253-11.dat upx behavioral1/memory/1656-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2036-17-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2036-27-0x0000000000500000-0x000000000050F000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1656 wrote to memory of 2036 1656 2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe 28 PID 1656 wrote to memory of 2036 1656 2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe 28 PID 1656 wrote to memory of 2036 1656 2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe 28 PID 1656 wrote to memory of 2036 1656 2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-19_850659d463094b653a5447beae0f6b91_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1656 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2036
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
68KB
MD5862112f14a280b0e04207da658822ce5
SHA1f2e2e5f20482d8f9327bf758b04bd6e19397de36
SHA2560ee2cc3baab880f277727598777e80e91419eb40eaf2cc53b3047eac4c0722e1
SHA512aa6e4a10e601bf8438af94af635cc9f8ab6b97763bd4a079728bf46c3bd7d878769f2dfa8a5a68248ac4cc403e8a27604281971667964bee801afc3af8a4cb49