af1308a0f02277ee4dfec31fe7599defd245ea30993273ff7bebceb6073d13bc

General

Target

2024-05-23_26f9eb22205b21dee337a91f3030e699_cryptolocker.exe
Size

60KB
MD5

26f9eb22205b21dee337a91f3030e699
SHA1

22196e361a45d420adc663843e87b792259a5ec4
SHA256

af1308a0f02277ee4dfec31fe7599defd245ea30993273ff7bebceb6073d13bc
SHA512

7f2cf54ebf7cc7ba9f1b281e8474f00b4fd1573b893a927a8db40021b4a7a90973c70bc2777916681d353b1ef4327fa64d5e05c4256a69c2e965fe2cff8f91e6
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaUf3J:z6a+CdOOtEvwDpjQ+

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2600-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2600-13-0x0000000002840000-0x0000000002850000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2604-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2604-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2600-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2600-13-0x0000000002840000-0x0000000002850000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2604-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2604-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2600-8-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2600-13-0x0000000002840000-0x0000000002850000-memory.dmp	UPX
behavioral1/memory/2604-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2604-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2604 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_26f9eb22205b21dee337a91f3030e699_cryptolocker.exe

pid process

2600 2024-05-23_26f9eb22205b21dee337a91f3030e699_cryptolocker.exe

pid	process
2604	asih.exe

pid	process
2600	2024-05-23_26f9eb22205b21dee337a91f3030e699_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2600-8-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2600-13-0x0000000002840000-0x0000000002850000-memory.dmp	upx
behavioral1/memory/2604-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2604-26-0x0000000000500000-0x0000000000510000-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:

2024-05-23_26f9eb22205b21dee337a91f3030e699_cryptolocker.exe

description	pid	process	target process
PID 2600 wrote to memory of 2604	2600	2024-05-23_26f9eb22205b21dee337a91f3030e699_cryptolocker.exe	asih.exe
PID 2600 wrote to memory of 2604	2600	2024-05-23_26f9eb22205b21dee337a91f3030e699_cryptolocker.exe	asih.exe
PID 2600 wrote to memory of 2604	2600	2024-05-23_26f9eb22205b21dee337a91f3030e699_cryptolocker.exe	asih.exe
PID 2600 wrote to memory of 2604	2600	2024-05-23_26f9eb22205b21dee337a91f3030e699_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_26f9eb22205b21dee337a91f3030e699_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_26f9eb22205b21dee337a91f3030e699_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2600

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2604

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
60KB

MD5
776268f74a35457cdff13ce5a70a5470

SHA1
47b33b92ee3f3b04ca648b41bc53e3f435ea9309

SHA256
ef2570d410c83036342248d5a516aa480fb8b182d6a309db700e9fc7e3ea7267

SHA512
1163510d9e125927b9158890f63afb44e7ff0bd266bfe736a5f6fc2d16d97834184a08298d3678d0fdb2bb3b2f000bd6faf78fe3971a5fd391bfad2702a81be5

Download Submit
memory/2600-9-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2600-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2600-1-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2600-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2600-13-0x0000000002840000-0x0000000002850000-memory.dmp

Filesize
64KB

Download
memory/2604-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2604-18-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2604-25-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2604-26-0x0000000000500000-0x0000000000510000-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