9deb188a5095fde522675a4ce981a932fbeabb8d1ff57a23a7782fee1978e4a4

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:35

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-22_5a2bd9922c6041adf81ecf159ed0e27c_cryptolocker.exe
Size

42KB
MD5

5a2bd9922c6041adf81ecf159ed0e27c
SHA1

f9d31240f52f74776822f7e2dd9e47c33657b08a
SHA256

9deb188a5095fde522675a4ce981a932fbeabb8d1ff57a23a7782fee1978e4a4
SHA512

a1c3f2b88c840e2ab69e7c752b093eb365fa96fa097f2c9724d31eb7c6c6d36e7357a921d4a97cac2481c9389b4e9ad5d31309d82c8f4479bbe05073eaf9b0d0
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAHTzX:bCDOw9aMDooc+vAH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/384-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\lossy.exe	CryptoLocker_rule2
behavioral2/memory/384-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2844-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2844-27-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

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

Processes:

2024-05-22_5a2bd9922c6041adf81ecf159ed0e27c_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-22_5a2bd9922c6041adf81ecf159ed0e27c_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

lossy.exe

pid process

2844 lossy.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2844	lossy.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_5a2bd9922c6041adf81ecf159ed0e27c_cryptolocker.exe

description	pid	process	target process
PID 384 wrote to memory of 2844	384	2024-05-22_5a2bd9922c6041adf81ecf159ed0e27c_cryptolocker.exe	lossy.exe
PID 384 wrote to memory of 2844	384	2024-05-22_5a2bd9922c6041adf81ecf159ed0e27c_cryptolocker.exe	lossy.exe
PID 384 wrote to memory of 2844	384	2024-05-22_5a2bd9922c6041adf81ecf159ed0e27c_cryptolocker.exe	lossy.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_5a2bd9922c6041adf81ecf159ed0e27c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_5a2bd9922c6041adf81ecf159ed0e27c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:384

C:\Users\Admin\AppData\Local\Temp\lossy.exe
"C:\Users\Admin\AppData\Local\Temp\lossy.exe"
2⤵
- Executes dropped EXE
PID:2844

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\lossy.exe
Filesize
42KB

MD5
2920d0d9a91275701bfcf25beaed8e06

SHA1
ea95795bb507549e548623e326ed6bf7b5bec789

SHA256
5409126e30c03a0ed6be417dd98be3ad2b4df1b84508f3e7aa9c4b2b38525436

SHA512
ab19fc8c186df408a171755ed6fb28a11a47b4086695e17c0a14b70e08c0f2c51ccd6443dd279515320844238d48cf08786e95c2fd8a188cc301806e17c70832

Download Submit
memory/384-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/384-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/384-2-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/384-9-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/384-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2844-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2844-20-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/2844-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2844-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download