14504a6244e43cf440be0433f129d1402a4b348b228f875655dd36ed9567136d

General

Target

2024-04-19_860c9bc7a9bd2d9f9d3bccae00c64ea0_cryptolocker.exe
Size

99KB
MD5

860c9bc7a9bd2d9f9d3bccae00c64ea0
SHA1

ffc89d4b4e6f4c7330440f291b46f66da9215d59
SHA256

14504a6244e43cf440be0433f129d1402a4b348b228f875655dd36ed9567136d
SHA512

a3b92b62afd0bac5443e32ea33b8588c011cf9fe2f91dd07c55e89275a773f87e3e96755115d0b501e8c52a223c19000445a4c78c15c6d65129025b072f6d093
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbbr/BKiXv:z6a+CdOOtEvwDpjcb

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2356-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000014120-11.dat	CryptoLocker_rule2
behavioral1/memory/2356-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3016-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2356-13-0x0000000001FA0000-0x0000000001FB0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3016-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/2356-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000014120-11.dat	CryptoLocker_set1
behavioral1/memory/2356-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3016-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2356-13-0x0000000001FA0000-0x0000000001FB0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3016-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2356-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000014120-11.dat	UPX
behavioral1/memory/2356-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3016-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2356-13-0x0000000001FA0000-0x0000000001FB0000-memory.dmp	UPX
behavioral1/memory/3016-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3016	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2356	2024-04-19_860c9bc7a9bd2d9f9d3bccae00c64ea0_cryptolocker.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2356-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0009000000014120-11.dat	upx
behavioral1/memory/2356-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3016-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2356-13-0x0000000001FA0000-0x0000000001FB0000-memory.dmp	upx
behavioral1/memory/3016-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 3016	2356	2024-04-19_860c9bc7a9bd2d9f9d3bccae00c64ea0_cryptolocker.exe	28
PID 2356 wrote to memory of 3016	2356	2024-04-19_860c9bc7a9bd2d9f9d3bccae00c64ea0_cryptolocker.exe	28
PID 2356 wrote to memory of 3016	2356	2024-04-19_860c9bc7a9bd2d9f9d3bccae00c64ea0_cryptolocker.exe	28
PID 2356 wrote to memory of 3016	2356	2024-04-19_860c9bc7a9bd2d9f9d3bccae00c64ea0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-19_860c9bc7a9bd2d9f9d3bccae00c64ea0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_860c9bc7a9bd2d9f9d3bccae00c64ea0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
99KB

MD5
fa9cdef428984e4229593a9a72609a39

SHA1
cad32add42cc7b26beca787a1f0fe69f3bef0ac7

SHA256
22eb187f0a9b274b984ed7c2be8fadac3fbefce7913a71715207137855590dfa

SHA512
fca59408997e76a411a86b75d187a8927a7bf65767461c7dcde433505cd62922944929acb79ae9baa6471d0d73e41df8f1dcbdef3ee10caa76272008f7d49361

Download Submit
memory/2356-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2356-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2356-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2356-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2356-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2356-13-0x0000000001FA0000-0x0000000001FB0000-memory.dmp

Filesize
64KB

Download
memory/3016-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3016-19-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/3016-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3016-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

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