acb9e1c23f0b66d30d0a52ad30cf299748bad4c80ae53840d324bd1da31bf620

General

Target

2024-05-22_99d56d1d3eaf8e33d943df9b696d4274_cryptolocker.exe
Size

79KB
MD5

99d56d1d3eaf8e33d943df9b696d4274
SHA1

6d1b3625e7f39ae4da8b533dc815b5be108aba34
SHA256

acb9e1c23f0b66d30d0a52ad30cf299748bad4c80ae53840d324bd1da31bf620
SHA512

e068e76fc4c3677574d43638c51d8ce9c1b262fef91828e52577f55a4f5f5069eb5101200d3059f73701daf0c3de18bfabcfc486c95d271865ac67e9202c891b
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdJcRP:T6a+rdOOtEvwDpjNtO

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2356-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2356-13-0x0000000002980000-0x0000000002990000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2356-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2644-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2644-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2356-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2356-13-0x0000000002980000-0x0000000002990000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2356-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2644-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2644-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2356-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2356-13-0x0000000002980000-0x0000000002990000-memory.dmp	UPX
behavioral1/memory/2356-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2644-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2644-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2644 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_99d56d1d3eaf8e33d943df9b696d4274_cryptolocker.exe

pid process

2356 2024-05-22_99d56d1d3eaf8e33d943df9b696d4274_cryptolocker.exe

pid	process
2644	asih.exe

pid	process
2356	2024-05-22_99d56d1d3eaf8e33d943df9b696d4274_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2356-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2356-13-0x0000000002980000-0x0000000002990000-memory.dmp	upx
behavioral1/memory/2356-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2644-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2644-27-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-22_99d56d1d3eaf8e33d943df9b696d4274_cryptolocker.exe

description	pid	process	target process
PID 2356 wrote to memory of 2644	2356	2024-05-22_99d56d1d3eaf8e33d943df9b696d4274_cryptolocker.exe	asih.exe
PID 2356 wrote to memory of 2644	2356	2024-05-22_99d56d1d3eaf8e33d943df9b696d4274_cryptolocker.exe	asih.exe
PID 2356 wrote to memory of 2644	2356	2024-05-22_99d56d1d3eaf8e33d943df9b696d4274_cryptolocker.exe	asih.exe
PID 2356 wrote to memory of 2644	2356	2024-05-22_99d56d1d3eaf8e33d943df9b696d4274_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_99d56d1d3eaf8e33d943df9b696d4274_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_99d56d1d3eaf8e33d943df9b696d4274_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:2644

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
79KB

MD5
f0c946ac45c0c6d1aedb4f71fb9d652e

SHA1
078e37c59c33fdd4baa431062b425bc02519ebaf

SHA256
a75f52e7c6c7d0fb5fdf200fc691899216465b39c231cf3f3354685874b05c51

SHA512
2b74453c39f0d32c338a03c16c55af25e847de2cfd2f07439a9989b5f45deb4a22105e43f2d0e66cf57a98041f27ab873817cfa21fe5923c1d03797144aac97c

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

Filesize
64KB

Download
memory/2356-1-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2356-3-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2356-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2356-13-0x0000000002980000-0x0000000002990000-memory.dmp

Filesize
64KB

Download
memory/2356-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2644-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2644-19-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2644-26-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2644-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads