84d27097f968478f99ce85e5589d2c99a0155c841a3f3e411f90ebc85e3aacd6

General

Target

2024-05-22_d1c10c14d41be94da84953576be54b59_cryptolocker.exe
Size

40KB
MD5

d1c10c14d41be94da84953576be54b59
SHA1

29cf4ca0bb840b33ef6f04b82734ebc9c35f63d6
SHA256

84d27097f968478f99ce85e5589d2c99a0155c841a3f3e411f90ebc85e3aacd6
SHA512

8f811b2421a6010dc2dc829727a1fdd341b7fff10b145897fe76e501699e0382e170aa891361f6a65e6e9a0471df6672018b38dc6670d1b1c05c2b08a9963535
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYY:qDdFJy3QMOtEvwDpjjWMl7TF

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2084-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2120-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2084-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2120-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2084-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2120-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2084 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_d1c10c14d41be94da84953576be54b59_cryptolocker.exe

pid process

2120 2024-05-22_d1c10c14d41be94da84953576be54b59_cryptolocker.exe

pid	process
2084	asih.exe

pid	process
2120	2024-05-22_d1c10c14d41be94da84953576be54b59_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2120-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2084-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2120-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2084-27-0x0000000000500000-0x0000000000510000-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_d1c10c14d41be94da84953576be54b59_cryptolocker.exe

description	pid	process	target process
PID 2120 wrote to memory of 2084	2120	2024-05-22_d1c10c14d41be94da84953576be54b59_cryptolocker.exe	asih.exe
PID 2120 wrote to memory of 2084	2120	2024-05-22_d1c10c14d41be94da84953576be54b59_cryptolocker.exe	asih.exe
PID 2120 wrote to memory of 2084	2120	2024-05-22_d1c10c14d41be94da84953576be54b59_cryptolocker.exe	asih.exe
PID 2120 wrote to memory of 2084	2120	2024-05-22_d1c10c14d41be94da84953576be54b59_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_d1c10c14d41be94da84953576be54b59_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_d1c10c14d41be94da84953576be54b59_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2120

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2084

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
40KB

MD5
d5589192ed3a8753e91ee69b1ffbc3cb

SHA1
b36d2d40341c822b44d90bb5cbf1e6430677eb6c

SHA256
af6f72166891cd3c0d7e8e11853d4ba8c2d06793ff58a2d2a696143b1b5a7ca8

SHA512
e69210dbb59ed82d1e822816264a9aa19130730d703dbe4afc9d65128441b264e7aef6914658bfcc43f82823e86f5cbd18646ac6ccb01b5ef3f545f40a1a58c7

Download Submit
memory/2084-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2084-19-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2084-26-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2084-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2120-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2120-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2120-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2120-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2120-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads