0de41ff826682c4dae42a1d2d9b702ddf207cb674ada33d1773f93eafa83ad4f

General

Target

2024-05-22_4d75aad41f1e7200685846194ba21475_cryptolocker.exe
Size

77KB
MD5

4d75aad41f1e7200685846194ba21475
SHA1

b83fd9103e46bfd64be3af77169ef0eda77f145a
SHA256

0de41ff826682c4dae42a1d2d9b702ddf207cb674ada33d1773f93eafa83ad4f
SHA512

9c549d7edba2b09de53e9265d034b58513b90002b11cf3bb0d8bb173f4ed2fe0e5ce53379093b921db48570e4f622f972f502adbd5a299b5b2b635338575d6ce
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUxB1u:T6a+rdOOtEvwDpjNtHPp

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2220-13-0x0000000002840000-0x0000000002850000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2220-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1196-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1196-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2220-13-0x0000000002840000-0x0000000002850000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2220-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1196-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1196-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2220-13-0x0000000002840000-0x0000000002850000-memory.dmp	UPX
behavioral1/memory/2220-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1196-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1196-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1196 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_4d75aad41f1e7200685846194ba21475_cryptolocker.exe

pid process

2220 2024-05-22_4d75aad41f1e7200685846194ba21475_cryptolocker.exe

pid	process
1196	asih.exe

pid	process
2220	2024-05-22_4d75aad41f1e7200685846194ba21475_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2220-13-0x0000000002840000-0x0000000002850000-memory.dmp	upx
behavioral1/memory/2220-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1196-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1196-27-0x0000000000500000-0x0000000000510000-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_4d75aad41f1e7200685846194ba21475_cryptolocker.exe

description	pid	process	target process
PID 2220 wrote to memory of 1196	2220	2024-05-22_4d75aad41f1e7200685846194ba21475_cryptolocker.exe	asih.exe
PID 2220 wrote to memory of 1196	2220	2024-05-22_4d75aad41f1e7200685846194ba21475_cryptolocker.exe	asih.exe
PID 2220 wrote to memory of 1196	2220	2024-05-22_4d75aad41f1e7200685846194ba21475_cryptolocker.exe	asih.exe
PID 2220 wrote to memory of 1196	2220	2024-05-22_4d75aad41f1e7200685846194ba21475_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_4d75aad41f1e7200685846194ba21475_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_4d75aad41f1e7200685846194ba21475_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2220

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1196

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

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Downloads

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

Filesize
77KB

MD5
3522f7904cdf72790db69bd87d061d17

SHA1
47676e4a3a1601dd96dece8336d9378f6c3455b1

SHA256
f89ab74e5982c135a3118fbc53df3656120c9efd9108ba69aa54fbb627c2c3db

SHA512
8e5adc51b43c3d9e02bc0b9a6565f75ec5f2e0b931f1201f62381ef2990dfb07d0c38c5986bfa509d0d9941aa23c6132fc7b14d29afe4635e8ecc2b62582ddf6

Download Submit
memory/1196-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1196-26-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1196-19-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/1196-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-1-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2220-9-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2220-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2220-13-0x0000000002840000-0x0000000002850000-memory.dmp

Filesize
64KB

Download
memory/2220-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads