f2d913398fe248a5acab694fe282b1e572aa82e038557ee8fff0aa3b433f56aa

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/05/2024, 18:02

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe
Size

59KB
MD5

5120f104b3f69b5866a376e61bd37233
SHA1

7d3f2c442edd0a455c9d726c96f98821be1a6f68
SHA256

f2d913398fe248a5acab694fe282b1e572aa82e038557ee8fff0aa3b433f56aa
SHA512

3462d3cd0710080fe1348ec4758b53490cade34392c100e0862710be782a537708b6d7a0943f00d9bfd1075974483d861fcc96953939c561be66a7efc4afaabc
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAPj9:H6QFElP6n+gou9cvMOtEvwDpjCpVXA

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000014909-11.dat	CryptoLocker_rule2
behavioral1/memory/1688-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2884-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d000000014909-11.dat	CryptoLocker_set1
behavioral1/memory/1688-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2884-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d000000014909-11.dat	UPX
behavioral1/memory/1688-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2884-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2884	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1688	2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d000000014909-11.dat	upx
behavioral1/memory/1688-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2884-26-0x0000000000500000-0x0000000000510000-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 1688 wrote to memory of 2884	1688	2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe	28
PID 1688 wrote to memory of 2884	1688	2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe	28
PID 1688 wrote to memory of 2884	1688	2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe	28
PID 1688 wrote to memory of 2884	1688	2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2884

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
59KB

MD5
621fe82ca97824072378c29a9367b826

SHA1
b33dbca3060274ce920b46941855fbb295cf139c

SHA256
486056dcdf2cf910f4894bdd9025e43397a069cc02a36373219cfa3724ed031a

SHA512
28b9929c3db724d86e4ae967cddf877797fb2c9e829b7b86dcfeb20e922430cbd41a098b34234bc751c6538bf228931f1d4e6c15b460a35bd9fed11c76443925

Download Submit
memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1688-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1688-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1688-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1688-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2884-18-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2884-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2884-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download