d546d7c2c1b8a670f4ff229c454e1757362753384d082f2248fcad1dce44d8d5

General

Target

2024-05-23_ed16d0a278a6f854dc73c4ad3b5f5b2a_cryptolocker.exe
Size

39KB
MD5

ed16d0a278a6f854dc73c4ad3b5f5b2a
SHA1

dd66cb1d04a89a89ab68f727124a4bb37c3af6a8
SHA256

d546d7c2c1b8a670f4ff229c454e1757362753384d082f2248fcad1dce44d8d5
SHA512

b4bfce0a9314d02b50a313f51721687db80fe5ea7b665fae4403c6bfa1ab8d39fec05bda1a6c40ef368cd62c985a1e13f7e02a84d294f7e7e6e822cc63f598af
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYan8h:qDdFJy3QMOtEvwDpjjWMl7Tdn8h

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2896-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2896-13-0x0000000002320000-0x0000000002330000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2896-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2368-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2368-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2896-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2896-13-0x0000000002320000-0x0000000002330000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2896-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2368-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2368-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2896-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2896-13-0x0000000002320000-0x0000000002330000-memory.dmp	UPX
behavioral1/memory/2896-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2368-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2368-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2368 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_ed16d0a278a6f854dc73c4ad3b5f5b2a_cryptolocker.exe

pid process

2896 2024-05-23_ed16d0a278a6f854dc73c4ad3b5f5b2a_cryptolocker.exe

pid	process
2368	asih.exe

pid	process
2896	2024-05-23_ed16d0a278a6f854dc73c4ad3b5f5b2a_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2896-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2896-13-0x0000000002320000-0x0000000002330000-memory.dmp	upx
behavioral1/memory/2896-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2368-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2368-27-0x0000000000500000-0x0000000000510000-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:

2024-05-23_ed16d0a278a6f854dc73c4ad3b5f5b2a_cryptolocker.exe

description	pid	process	target process
PID 2896 wrote to memory of 2368	2896	2024-05-23_ed16d0a278a6f854dc73c4ad3b5f5b2a_cryptolocker.exe	asih.exe
PID 2896 wrote to memory of 2368	2896	2024-05-23_ed16d0a278a6f854dc73c4ad3b5f5b2a_cryptolocker.exe	asih.exe
PID 2896 wrote to memory of 2368	2896	2024-05-23_ed16d0a278a6f854dc73c4ad3b5f5b2a_cryptolocker.exe	asih.exe
PID 2896 wrote to memory of 2368	2896	2024-05-23_ed16d0a278a6f854dc73c4ad3b5f5b2a_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_ed16d0a278a6f854dc73c4ad3b5f5b2a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_ed16d0a278a6f854dc73c4ad3b5f5b2a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2896

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2368

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
39KB

MD5
458c2f27470ae7ca5213aab57e5efd2b

SHA1
01776be1ba3e829f550a8e97505af9214a36b59f

SHA256
6c30773f97ae9129f1d969f0802e3323ab1e237e4877e9a7a12d49336a07c4fa

SHA512
a06ce96d7b65ec39690834a98b7f12b420333984b106991b42b7d45606540cbe3ba751f78a00e31c6c80b067c945fe69a16afabb9d46f2609e5fe504f2a57fcc

Download Submit
memory/2368-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2368-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2896-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2896-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2896-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2896-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2896-13-0x0000000002320000-0x0000000002330000-memory.dmp

Filesize
64KB

Download
memory/2896-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads