21efb1da8621c4e7d521a10d7dc3126bf9f6fd66a5362d969d8b8b1835d0c8e3

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 17:29

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General

Target

2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe
Size

51KB
MD5

45839bd83f62f5e00b912323aedeb992
SHA1

960b293fcbd7da2cac34b228072cfeee5dfde933
SHA256

21efb1da8621c4e7d521a10d7dc3126bf9f6fd66a5362d969d8b8b1835d0c8e3
SHA512

b86feec17bddf733d7aec70ac203724e65e86fa70d15f1327c82aed02c725c1d5a8092a785dc4ff10de64524c773ddff3fa8a0cbe8850707dfde9834ff8126e6
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPxyV4tFVgQ4Ij:bIDOw9a0Dwo3P1ojvUSD4PRtFVgPc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023215-12.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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
316	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 3952 wrote to memory of 316	3952	2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe	90
PID 3952 wrote to memory of 316	3952	2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe	90
PID 3952 wrote to memory of 316	3952	2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_45839bd83f62f5e00b912323aedeb992_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3952
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:316

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
52KB

MD5
31429e1be54df82cd27932138924a72d

SHA1
ea8b1f5db586ceca84dff56994815605c44abdba

SHA256
e1b7d18ed18b95c6034bfdfe4191dcbdfa413c059124e35534f647ad8f19b058

SHA512
0b6175bf5161eeb7f663d465af8e716ea254a5a7ed824495bc894bd7b9b35811c8aa03c57f49f59e9e4f8f524eccceab44f98e232c3e014288b7e1f5edd195d5

Download Submit
memory/316-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/316-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3952-0-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3952-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3952-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download