0854a06f4b1271cfc12b311901d986fd8e3c263f54e08b1453554070add1895e

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/04/2024, 18:25

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-04-27_0c25490833b52e6202f147da7d22b2f7_cryptolocker.exe
Size

31KB
MD5

0c25490833b52e6202f147da7d22b2f7
SHA1

508e612d720c053025aa7bb079dfdb124b2fa278
SHA256

0854a06f4b1271cfc12b311901d986fd8e3c263f54e08b1453554070add1895e
SHA512

951df33ecf3b0ce53c320819f931f6de56810cbf0c8715758fd2708fc16b8a59b7afe42cbcbc2e1e760e78cd2223b169ce4017006a5411ecbe4f328c9fab4a35
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+4tHurJm:q0zizzOSxMOtEvwDpj/arqd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/112-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012346-11.dat	CryptoLocker_rule2
behavioral1/memory/112-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1580-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/112-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1580-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/112-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d000000012346-11.dat	UPX
behavioral1/memory/112-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1580-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1580	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
112	2024-04-27_0c25490833b52e6202f147da7d22b2f7_cryptolocker.exe

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 112 wrote to memory of 1580	112	2024-04-27_0c25490833b52e6202f147da7d22b2f7_cryptolocker.exe	28
PID 112 wrote to memory of 1580	112	2024-04-27_0c25490833b52e6202f147da7d22b2f7_cryptolocker.exe	28
PID 112 wrote to memory of 1580	112	2024-04-27_0c25490833b52e6202f147da7d22b2f7_cryptolocker.exe	28
PID 112 wrote to memory of 1580	112	2024-04-27_0c25490833b52e6202f147da7d22b2f7_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-27_0c25490833b52e6202f147da7d22b2f7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_0c25490833b52e6202f147da7d22b2f7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:112
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1580

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
31KB

MD5
7f2b549d8af6e5e787c672f3c8b440f6

SHA1
e0ece47e7605ede9b5f4fd9eef5dfb180c8cef9f

SHA256
4f06735706445605ad791598253a0cb2e14c477c0246531b7e16a6140a00c378

SHA512
a8bdcb90cde6a3f92373f3d12f4fa3ad574f40cf4778b2b9f99b2dff5fb16ed386c4a01e5d8e695c66e933c5023123bec776ae8da5ec4d3fcb9501da8ef81206

Download Submit
memory/112-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/112-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/112-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/112-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/112-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1580-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1580-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download