43030d71b82db253e26877eacdc6547dca5b4f8dba8dc794161cbeb30150b23f

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 17:44

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General

Target

2024-01-25_2a19eede904690a3381a9cf82e1745b3_cryptolocker.exe
Size

55KB
MD5

2a19eede904690a3381a9cf82e1745b3
SHA1

9c80343a80cc6182709d4ba8fb425db9f36911bd
SHA256

43030d71b82db253e26877eacdc6547dca5b4f8dba8dc794161cbeb30150b23f
SHA512

3b4b868cca83068016f7c073e959117b7f02601476176a2589213c98afe8651bbe62f800a91ee5c0e00ac370b3accd6a3164114e5f3eb4446574ee1c25f720de
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylsPxAu:79mqyNhQMOtEvwDpjBPY7xv3gy5V

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2440-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012242-11.dat	CryptoLocker_rule2
behavioral1/memory/2440-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2656-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2440-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012242-11.dat	CryptoLocker_set1
behavioral1/memory/2440-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2656-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2656	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2440	2024-01-25_2a19eede904690a3381a9cf82e1745b3_cryptolocker.exe

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 2440 wrote to memory of 2656	2440	2024-01-25_2a19eede904690a3381a9cf82e1745b3_cryptolocker.exe	28
PID 2440 wrote to memory of 2656	2440	2024-01-25_2a19eede904690a3381a9cf82e1745b3_cryptolocker.exe	28
PID 2440 wrote to memory of 2656	2440	2024-01-25_2a19eede904690a3381a9cf82e1745b3_cryptolocker.exe	28
PID 2440 wrote to memory of 2656	2440	2024-01-25_2a19eede904690a3381a9cf82e1745b3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-25_2a19eede904690a3381a9cf82e1745b3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_2a19eede904690a3381a9cf82e1745b3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
55KB

MD5
ca1c45ce8579fcf36e3f3d5b4322038b

SHA1
b954e6143c70340f330180883f5bcdb3d6c7ddb5

SHA256
a056500731131b8c009812b32453e2f4f50a969ff02ad8625d5ef275a3db130d

SHA512
2ca91fa2ba98a3f358bf4eb7c887c2bac3ac04afaa17659ef117ae8636b70edec9c00f620326e9c2cb9c1f9bea7a6d5b367055fcb5d23157fe5ee138d3240502

Download Submit
memory/2440-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2440-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2440-2-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2440-9-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2440-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2656-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2656-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2656-18-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download