5f672a3191b1ffba988862a2c5e9a97bcfa797f780c5878787947528244dd9c4

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22-04-2024 10:59

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General

Target

2024-04-22_be602adfd437ff555964cbf8c52b82c9_cryptolocker.exe
Size

41KB
MD5

be602adfd437ff555964cbf8c52b82c9
SHA1

c62fbc5a4c892c5787c40ec903b9d0a2cc9475d7
SHA256

5f672a3191b1ffba988862a2c5e9a97bcfa797f780c5878787947528244dd9c4
SHA512

08ccb11744d18275c40f7a9e13c88fe5a99a1e960a45b55ad44e849f273150d5cdbcdf5a6425ab571a42de6627f9971b1074b41f00efae377e489b3afb645af3
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6DyE9x3e:bIDOw9a0Dwo3P1ojvUSD79Re

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-22_be602adfd437ff555964cbf8c52b82c9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4900	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 1804 wrote to memory of 4900	1804	2024-04-22_be602adfd437ff555964cbf8c52b82c9_cryptolocker.exe	85
PID 1804 wrote to memory of 4900	1804	2024-04-22_be602adfd437ff555964cbf8c52b82c9_cryptolocker.exe	85
PID 1804 wrote to memory of 4900	1804	2024-04-22_be602adfd437ff555964cbf8c52b82c9_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-22_be602adfd437ff555964cbf8c52b82c9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_be602adfd437ff555964cbf8c52b82c9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1804
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4900

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
41KB

MD5
db6274dea317b44751cd6ec8747d4e52

SHA1
e23fe6e339ad139dd88a18eb962710c638c09d3c

SHA256
b6d91e0559c3936090ca8ff2b2b355fb1cd5bea54294d0afbcfd4c16d7a9c833

SHA512
9e5a4eaf1c74b685e4c8362e9aa0cb84e903ab53962ec02904e37b9b627c52cd9564c38b4cc5f28e23edce183259336b348b1901206b3350232c1ecf67b85f03

Download Submit
memory/1804-0-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1804-2-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/1804-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4900-17-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4900-19-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download