4442fd992b97c1e690cda4a944992298ed1ae7c187853737fc6d28a2c64edbc0

General

Target

2024-05-24_6b6ca414cfc2fddc684b4fa9d74ec34b_cryptolocker.exe
Size

38KB
MD5

6b6ca414cfc2fddc684b4fa9d74ec34b
SHA1

dee4a98eb93ec018f85f465ea62387ffce26d27b
SHA256

4442fd992b97c1e690cda4a944992298ed1ae7c187853737fc6d28a2c64edbc0
SHA512

fa99513735edb4e44b1f91ea4abc48b00ac522ec45738ca298d1997e419f043fe71d9be30ee55e4ba96f8b877b2f5b68b1419b8792c309f182d2beb9b5bb5f21
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axK3Dh:qUmnpomddpMOtEvwDpjjaYaQl

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1776-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1776-12-0x0000000002360000-0x000000000236F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1776-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3048-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3048-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1776-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1776-12-0x0000000002360000-0x000000000236F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1776-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3048-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3048-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1776-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1776-12-0x0000000002360000-0x000000000236F000-memory.dmp	UPX
behavioral1/memory/1776-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/3048-19-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/3048-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3048 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-24_6b6ca414cfc2fddc684b4fa9d74ec34b_cryptolocker.exe

pid process

1776 2024-05-24_6b6ca414cfc2fddc684b4fa9d74ec34b_cryptolocker.exe

pid	process
3048	asih.exe

pid	process
1776	2024-05-24_6b6ca414cfc2fddc684b4fa9d74ec34b_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1776-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/1776-12-0x0000000002360000-0x000000000236F000-memory.dmp	upx
behavioral1/memory/1776-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3048-19-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3048-27-0x0000000000500000-0x000000000050F000-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:

2024-05-24_6b6ca414cfc2fddc684b4fa9d74ec34b_cryptolocker.exe

description	pid	process	target process
PID 1776 wrote to memory of 3048	1776	2024-05-24_6b6ca414cfc2fddc684b4fa9d74ec34b_cryptolocker.exe	asih.exe
PID 1776 wrote to memory of 3048	1776	2024-05-24_6b6ca414cfc2fddc684b4fa9d74ec34b_cryptolocker.exe	asih.exe
PID 1776 wrote to memory of 3048	1776	2024-05-24_6b6ca414cfc2fddc684b4fa9d74ec34b_cryptolocker.exe	asih.exe
PID 1776 wrote to memory of 3048	1776	2024-05-24_6b6ca414cfc2fddc684b4fa9d74ec34b_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_6b6ca414cfc2fddc684b4fa9d74ec34b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_6b6ca414cfc2fddc684b4fa9d74ec34b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3048

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
38KB

MD5
81cc7ce88bd383c42f2fa80606e01487

SHA1
7eebbba42b59b0cdb80de843ed84495af5768785

SHA256
d4405c479f460e5a13fc1573f7f189232b873b67b6f848a6cbc35f69509c0c8e

SHA512
dcbd10f01af28c836fd657b85d0ba3fd79978619ffdde090a0d2500367467497680284530888680cceb8e5291ca9a9fc198e2078c8e34615ebe0093b7d01df57

Download Submit
memory/1776-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1776-2-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1776-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1776-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1776-12-0x0000000002360000-0x000000000236F000-memory.dmp

Filesize
60KB

Download
memory/1776-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3048-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3048-20-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/3048-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads