33f28e1583ce6142dc26f5c5494edfabd6accf01c787f975617a02233e3364b6

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 11:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-18_51d072cca623f565d92a38598c641483_cryptolocker.exe
Size

64KB
MD5

51d072cca623f565d92a38598c641483
SHA1

ba80a793ac3f72b1b8ccd4e9958ec5ed372eba92
SHA256

33f28e1583ce6142dc26f5c5494edfabd6accf01c787f975617a02233e3364b6
SHA512

0e17cbf2a76bf9f1f4a9cec514fd1f18de333e4ef90ce13eccde0c3d173bfe9bcb3d34cb877fa7c5051141bd5b9e80cdb49a510b56e93f4970d7a766921563e4
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5km:zj+soPSMOtEvwDpj4kpmeLmQm

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1460-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231fc-13.dat	CryptoLocker_rule2
behavioral2/memory/1460-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1828-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1460-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000231fc-13.dat	CryptoLocker_set1
behavioral2/memory/1460-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1828-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1460-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x00070000000231fc-13.dat	UPX
behavioral2/memory/1460-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1828-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-18_51d072cca623f565d92a38598c641483_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1828	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1460-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00070000000231fc-13.dat	upx
behavioral2/memory/1460-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1828-26-0x0000000000500000-0x0000000000510000-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 3 IoCs

description	pid	Process	procid_target
PID 1460 wrote to memory of 1828	1460	2024-02-18_51d072cca623f565d92a38598c641483_cryptolocker.exe	85
PID 1460 wrote to memory of 1828	1460	2024-02-18_51d072cca623f565d92a38598c641483_cryptolocker.exe	85
PID 1460 wrote to memory of 1828	1460	2024-02-18_51d072cca623f565d92a38598c641483_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-18_51d072cca623f565d92a38598c641483_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_51d072cca623f565d92a38598c641483_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
64KB

MD5
fd3548e37ac69c8c578e9383fe88a426

SHA1
b9993f458dd6734ce286e366430a2754a6a32349

SHA256
97308913d68bcd5f21c2dfb21326af38dae13ef0b9b9533b8fbf42068e44cbcc

SHA512
c46655984cbd160b604c98e27c8edc3d2c76cd833715334127e1d6cbb39b80f4eb9728a95e4df71d34d487dec863948006a712cb8b3a3ba03286f6b80e8c16f5

Download Submit
memory/1460-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1460-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1460-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1460-3-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/1460-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1828-19-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/1828-23-0x0000000000800000-0x0000000000806000-memory.dmp

Filesize
24KB

Download
memory/1828-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download