08e4b24c9c0d83815d4b683aaafe39d7aa0a187a2ef6ffb9a97a6bb21d2ced88

Analysis

max time kernel
149s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2024, 00:47

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General

Target

2024-01-25_4a83ca4d3537a9fd4989c6cafc064c58_cryptolocker.exe
Size

43KB
MD5

4a83ca4d3537a9fd4989c6cafc064c58
SHA1

654b211e6df05a10c5b451e247a4d9a49f76f315
SHA256

08e4b24c9c0d83815d4b683aaafe39d7aa0a187a2ef6ffb9a97a6bb21d2ced88
SHA512

be0882760c0e45fbc94649248129779f185b510ca56cb83d92484ba7cf7dca1e0a2286d172124c17dfd915f88e62a37ff58c53140a375f76af9bb0d6192e3f47
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPx9UnuN:bIDOw9a0Dwo3P1ojvUSD4PIng

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023155-12.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-01-25_4a83ca4d3537a9fd4989c6cafc064c58_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3500	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 1032 wrote to memory of 3500	1032	2024-01-25_4a83ca4d3537a9fd4989c6cafc064c58_cryptolocker.exe	87
PID 1032 wrote to memory of 3500	1032	2024-01-25_4a83ca4d3537a9fd4989c6cafc064c58_cryptolocker.exe	87
PID 1032 wrote to memory of 3500	1032	2024-01-25_4a83ca4d3537a9fd4989c6cafc064c58_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-25_4a83ca4d3537a9fd4989c6cafc064c58_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_4a83ca4d3537a9fd4989c6cafc064c58_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1032
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3500

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
44KB

MD5
41efc55e3a04155d54f60161631e033b

SHA1
6b52899ee18a45b20a9152a45622cadef02c7852

SHA256
6ea3c06357168631e83e6ba225c16bad473f0cb4d55cb484b61de53d8d57dabe

SHA512
6d50013a7f3b8d8d02ea53153ec2cadafa63a1c07a6712ab8aa51aa9355ac933e81e39d42ac6bae7ea74adec96a480ab239d2e7a7b66c66ac5138c4e514681f9

Download Submit
memory/1032-0-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/1032-1-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/1032-3-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download