5c429dcb2ed19b04b38bd52b37631d7e21fe9aa7cd17dff536c4b9eace2165cf

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
27-05-2024 23:25

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General

Target

2024-05-27_601fed67897376a58f842a1c4bc5b21c_cryptolocker.exe
Size

43KB
MD5

601fed67897376a58f842a1c4bc5b21c
SHA1

42a2a36ac66e2f92fa9277d4e9dee0f7849c8013
SHA256

5c429dcb2ed19b04b38bd52b37631d7e21fe9aa7cd17dff536c4b9eace2165cf
SHA512

e6d57889f385feb4838e8083743dea0253841fba656f8af7defed1597b37345ca91edc161bcfa636485bc9a8f7ec8bd78f9e729d6cca88fbb2cec2fdea377302
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAH/H:bCDOw9aMDooc+vAfH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1084-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023297-13.dat	CryptoLocker_rule2
behavioral2/memory/1084-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3400-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3400-27-0x0000000008000000-0x000000000800A000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-27_601fed67897376a58f842a1c4bc5b21c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3400	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 1084 wrote to memory of 3400	1084	2024-05-27_601fed67897376a58f842a1c4bc5b21c_cryptolocker.exe	81
PID 1084 wrote to memory of 3400	1084	2024-05-27_601fed67897376a58f842a1c4bc5b21c_cryptolocker.exe	81
PID 1084 wrote to memory of 3400	1084	2024-05-27_601fed67897376a58f842a1c4bc5b21c_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-27_601fed67897376a58f842a1c4bc5b21c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_601fed67897376a58f842a1c4bc5b21c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1084
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3400

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
43KB

MD5
2daefe8f0c89203588330d8a58049c7d

SHA1
f212c161d5323f08a873fe0317042912795f0694

SHA256
2633f2c2c1c1087228ec7733a2807d535388fd372e6db744cbff2d3fe5b1c4ca

SHA512
10c2564d944e366939476157f77043a91fe98edc5c15758114a8808e97106f9812206c3c948c408b3843e318d2715a6fd1090b8c9583e515351ebf88f10ad03e

Download Submit
memory/1084-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1084-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1084-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1084-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1084-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3400-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3400-20-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3400-26-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/3400-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download