eb583964d30600f1821cf30bc2ccb76c25911a28c859927093b7b5f71a39b316

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
09/06/2024, 04:24

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-09_f7f79b9f6a749f4237ae579cfa096f62_cryptolocker.exe
Size

40KB
MD5

f7f79b9f6a749f4237ae579cfa096f62
SHA1

523f22fa98d466dadb105137c8385f9a3c587a33
SHA256

eb583964d30600f1821cf30bc2ccb76c25911a28c859927093b7b5f71a39b316
SHA512

b518213dee268a9df73cf8245ca1bf7139fb6133995c48d0c746ff949e48ed4917579ff61642d6f2e7069bcb6d0fc15f3ce2b01386485db9147dc14005380f06
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY/t:qDdFJy3QMOtEvwDpjjWMl7TQ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2252-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001227e-11.dat	CryptoLocker_rule2
behavioral1/memory/2252-13-0x0000000000570000-0x0000000000580000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2252-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2620-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2252-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001227e-11.dat	CryptoLocker_set1
behavioral1/memory/2252-13-0x0000000000570000-0x0000000000580000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2252-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2620-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2252-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d00000001227e-11.dat	UPX
behavioral1/memory/2252-13-0x0000000000570000-0x0000000000580000-memory.dmp	UPX
behavioral1/memory/2252-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2620-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2620	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2252	2024-06-09_f7f79b9f6a749f4237ae579cfa096f62_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2252-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d00000001227e-11.dat	upx
behavioral1/memory/2252-13-0x0000000000570000-0x0000000000580000-memory.dmp	upx
behavioral1/memory/2252-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2620-27-0x0000000000500000-0x0000000000510000-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

description	pid	Process	procid_target
PID 2252 wrote to memory of 2620	2252	2024-06-09_f7f79b9f6a749f4237ae579cfa096f62_cryptolocker.exe	28
PID 2252 wrote to memory of 2620	2252	2024-06-09_f7f79b9f6a749f4237ae579cfa096f62_cryptolocker.exe	28
PID 2252 wrote to memory of 2620	2252	2024-06-09_f7f79b9f6a749f4237ae579cfa096f62_cryptolocker.exe	28
PID 2252 wrote to memory of 2620	2252	2024-06-09_f7f79b9f6a749f4237ae579cfa096f62_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-09_f7f79b9f6a749f4237ae579cfa096f62_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_f7f79b9f6a749f4237ae579cfa096f62_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
40KB

MD5
b57f310a717ebee0e4a0cc042e912a32

SHA1
ae8caf5834717fcaa70d96527123ff0e36971335

SHA256
8d97160f142f8440bfb5ca405bcfc60230e4042d33068ce3ff85b9572be5bf22

SHA512
d8cc3a444cf7b64702f4407f60eb65fe624904ffeb666187096004a4c43cb65052c80b0d9d6b03ea6ed620cfd5b4d7ff7b6c2ccfa4a4696e6126d1c642306da4

Download Submit
memory/2252-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2252-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2252-9-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2252-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2252-13-0x0000000000570000-0x0000000000580000-memory.dmp

Filesize
64KB

Download
memory/2252-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2620-19-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2620-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2620-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download