7e60950322ff038a01336a246e6e51e4688b653a4933e8ed9aa34cdc0a0cbc71

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
13-03-2024 20:46

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General

Target

2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe
Size

32KB
MD5

f1d6ace7fbccd81b070fc74bc5b1a658
SHA1

3ae170529ba2dec578fafcc55cd50b9c27efbd98
SHA256

7e60950322ff038a01336a246e6e51e4688b653a4933e8ed9aa34cdc0a0cbc71
SHA512

181b65b19ca0bd7a4fddef3327201a6ef7483c06408fa24b8f39c2e46a56bc1e7aaadcfe28824fe3ab513ab52897f819542a7caddbf11841e347fb1678dde18a
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+jHNGoU:q0zizzOSxMOtEvwDpj/ar1NzU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2416-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012252-14.dat	CryptoLocker_rule2
behavioral1/memory/2416-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1708-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1708-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2416-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2416-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1708-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1708-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2416-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012252-14.dat	UPX
behavioral1/memory/2416-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1708-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1708-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1708	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2416	2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_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 2416 wrote to memory of 1708	2416	2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe	28
PID 2416 wrote to memory of 1708	2416	2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe	28
PID 2416 wrote to memory of 1708	2416	2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe	28
PID 2416 wrote to memory of 1708	2416	2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2416
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1708

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

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Downloads

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

Filesize
32KB

MD5
f9d8fec54ac22d9ecf3ae832c8ea3e4b

SHA1
349f5fe5133e5712dead4809ff6e90ab5d1c146d

SHA256
b73f1d187edc32e092a9c1cbd2eb3ce42b0b16889f62710854746e63d3f4085e

SHA512
928789cfc7420baafc906d3cf4fb5d0fcbfc3f8499031880baac31e5b4b06c60927a6e76a613ff1019ae7746d87f908c1bd08b725990608e29a9f1f738a0bbf0

Download Submit
memory/1708-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1708-18-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1708-25-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/1708-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2416-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2416-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2416-2-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2416-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2416-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download