a634c5c7df4d9315447560e702805a9660448987eabae1b0935777d3fa656342

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/03/2024, 05:30

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General

Target

2024-03-09_6f34ff0c570eedc111e44e13e283e44a_cryptolocker.exe
Size

77KB
MD5

6f34ff0c570eedc111e44e13e283e44a
SHA1

c960b0d100fc9629a579ba203d3a22d73e5efdea
SHA256

a634c5c7df4d9315447560e702805a9660448987eabae1b0935777d3fa656342
SHA512

b869a03cc651aef3ef07fd716eafa75e3020c8bfcfab43ff3402caf8e3a7446775893974112d5916304eb432a8e4187c78cdba0f5cdaf822645c7024ff0c5c4e
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuf1:vCjsIOtEvwDpj5H9YvQd2x

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023260-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023260-12.dat	CryptoLocker_set1

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-09_6f34ff0c570eedc111e44e13e283e44a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3308	misid.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 2372 wrote to memory of 3308	2372	2024-03-09_6f34ff0c570eedc111e44e13e283e44a_cryptolocker.exe	99
PID 2372 wrote to memory of 3308	2372	2024-03-09_6f34ff0c570eedc111e44e13e283e44a_cryptolocker.exe	99
PID 2372 wrote to memory of 3308	2372	2024-03-09_6f34ff0c570eedc111e44e13e283e44a_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-09_6f34ff0c570eedc111e44e13e283e44a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_6f34ff0c570eedc111e44e13e283e44a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3308

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3376 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
1⤵
PID:1140

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\misid.exe

Filesize
77KB

MD5
dbf33dfda1fbfaf71b3711303034f6a0

SHA1
857d65aa656a8f8f579519df0a59f4e8000a3114

SHA256
f4884969a258f6c1517123db479d61e971df27a07ea7f4c491e9376094a3e236

SHA512
b099933cbb546fb5165fbbfa112242c5651dbe781f9eeb40be88c398be31405a394ef079ebfd5b6d462f6bf49ebaaf0d29c7eaf7e4aeeda480dc6bb8caf21e2c

Download Submit
memory/2372-0-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/2372-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/2372-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/3308-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3308-18-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download