d63ae84bea591dbfa9384b0386a2891c20e2658532ca68df593b65b9074cf1db

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2024, 12:50

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General

Target

2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe
Size

42KB
MD5

97fc40e3d7dc2c4d48f8613235ce97f6
SHA1

290128675b847b6189fac98025168fa1c483583c
SHA256

d63ae84bea591dbfa9384b0386a2891c20e2658532ca68df593b65b9074cf1db
SHA512

28f16ff84959751afa81d21a12dd0ba9190de57b72be019aac1b83eae725565e6b221391c146ad26c5693901cbd028ee98a65a04d05869ac180110a723ba2ff8
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqtN:bCDOw9aMDooc+vAqtN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4584-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023298-13.dat	CryptoLocker_rule2
behavioral2/memory/3024-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4584-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3024-27-0x0000000008000000-0x000000000800A000-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	2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3024	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 4584 wrote to memory of 3024	4584	2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe	83
PID 4584 wrote to memory of 3024	4584	2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe	83
PID 4584 wrote to memory of 3024	4584	2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_97fc40e3d7dc2c4d48f8613235ce97f6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4584
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3024

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
517fc3d717436321f295ae22f084bec5

SHA1
b03a3400912265744f11dcf3d78cbfb6d83b2ed6

SHA256
a434b508b236c00a8997ba45d4eca8c9cd737f3a7ae556cae08695c9774cd597

SHA512
e30dde3f8b3218ef5ad3471f8ea95aafdb0dfa14fccc0db09c30699ec2ec079a66f26d51821a503aa034af9ad040eefcf782ac7223bcf12db56f8e4b9ffc8be3

Download Submit
memory/3024-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3024-26-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/3024-20-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3024-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4584-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4584-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4584-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4584-9-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4584-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download