c339b79bfcc7672c7dcfc1619d02226294ba4c1a471e361f213b4666c93d411a

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 23:42

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General

Target

2024-03-14_87959326cf295b4154df672a62b67bc6_cryptolocker.exe
Size

41KB
MD5

87959326cf295b4154df672a62b67bc6
SHA1

9c771621f22d901f8a8962f197d64ace47036f6a
SHA256

c339b79bfcc7672c7dcfc1619d02226294ba4c1a471e361f213b4666c93d411a
SHA512

5b05a43ef61f45ea963182a446242453f308758bb1c8c4642acdd8f7599702458d2848cc9bdc65e983df08c56abd6526dcd0b2fb65c5bafafe138eefbba64d77
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8POKLV:bIDOw9a0Dwo3P1ojvUSDhT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-14_87959326cf295b4154df672a62b67bc6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3940	lossy.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 3552 wrote to memory of 3940	3552	2024-03-14_87959326cf295b4154df672a62b67bc6_cryptolocker.exe	89
PID 3552 wrote to memory of 3940	3552	2024-03-14_87959326cf295b4154df672a62b67bc6_cryptolocker.exe	89
PID 3552 wrote to memory of 3940	3552	2024-03-14_87959326cf295b4154df672a62b67bc6_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-14_87959326cf295b4154df672a62b67bc6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_87959326cf295b4154df672a62b67bc6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3552
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3940

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

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Downloads

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

Filesize
42KB

MD5
56ac03aa3001cae87b8027bfa2ce97a0

SHA1
fb77a6801ef11c921934f7f2512769454c60505e

SHA256
11c19111768855be6885e103ef5cbc43749a8a7dafc11d239cff78eea8993492

SHA512
7a47c0866a23587ab1b1c7fbf74bafce3cc59c8d7fc1517e4c08b1a0bce9df3d6989cba60c00eb448de98f903604e572fcb8aeede92c3df08429c9c00e35013d

Download Submit
memory/3552-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3552-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3552-2-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/3940-17-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3940-23-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download