557f869689410e08e9de72b6e7bb5d2a64e383326656ad6d3c2cc03e17398fe6

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 17:56

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-25_ec7d595051054a54c210b43ee244a5c4_cryptolocker.exe
Size

48KB
MD5

ec7d595051054a54c210b43ee244a5c4
SHA1

55f11a1f81325fa4e4671276f1fc4a70c540767d
SHA256

557f869689410e08e9de72b6e7bb5d2a64e383326656ad6d3c2cc03e17398fe6
SHA512

547310cf37a1b97b5b88aa0b89a271b7b5e9682d783ce44d789d9a695fdf995329cf45a6b7569fa027c7ef7547d2e0ed3eacaee27b7708d335cf3fbf4edddaf9
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakNA:V6a+pOtEvwDpjH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00c300000001e848-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00c300000001e848-12.dat	CryptoLocker_set1

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-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\International\Geo\Nation	2024-02-25_ec7d595051054a54c210b43ee244a5c4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
548	asih.exe

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 3724 wrote to memory of 548	3724	2024-02-25_ec7d595051054a54c210b43ee244a5c4_cryptolocker.exe	90
PID 3724 wrote to memory of 548	3724	2024-02-25_ec7d595051054a54c210b43ee244a5c4_cryptolocker.exe	90
PID 3724 wrote to memory of 548	3724	2024-02-25_ec7d595051054a54c210b43ee244a5c4_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-25_ec7d595051054a54c210b43ee244a5c4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_ec7d595051054a54c210b43ee244a5c4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3724
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:548

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\asih.exe

Filesize
48KB

MD5
45d27f2643b676c938ae5d5302309e2b

SHA1
23d217e594a72ba3d6f7e49c1a0e3209a3c9de7a

SHA256
de2f63d23ce77534b722d110fc29e4b487688c849d8ea8ed94ed172f4ef93ad9

SHA512
be1f87b629fdf3f7b71f23d218f94dc580d02cb2a788031393e8c8c55be358234600e7521e7f9b1609517420b3b83e1944b7869ca0465aad1c3471010f465c24

Download Submit
memory/548-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/548-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3724-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3724-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3724-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download