859af5b84c5765827259d66c4b75a467c815703a4545b043e961ca99424f91e0

Analysis

max time kernel
142s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 08:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-22_eb9c4268b5afa193fb6baad2275c5be4_cryptolocker.exe
Size

40KB
MD5

eb9c4268b5afa193fb6baad2275c5be4
SHA1

e38e65a993d4a195a68206524ed9e6081c884321
SHA256

859af5b84c5765827259d66c4b75a467c815703a4545b043e961ca99424f91e0
SHA512

b9400ee5b3e13c2aa7a84b8417dd698216b17bbef3cf1d1f9297e9cd19129a1fa76c2e536835fe4c2abe6ffe75176d00ee52a27143adab6a462efbdef5a3fc0d
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuG:X6QFElP6n+gJQMOtEvwDpjBsYK/f

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023240-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023240-12.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	2024-04-22_eb9c4268b5afa193fb6baad2275c5be4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2180	asih.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 3076 wrote to memory of 2180	3076	2024-04-22_eb9c4268b5afa193fb6baad2275c5be4_cryptolocker.exe	91
PID 3076 wrote to memory of 2180	3076	2024-04-22_eb9c4268b5afa193fb6baad2275c5be4_cryptolocker.exe	91
PID 3076 wrote to memory of 2180	3076	2024-04-22_eb9c4268b5afa193fb6baad2275c5be4_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-22_eb9c4268b5afa193fb6baad2275c5be4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_eb9c4268b5afa193fb6baad2275c5be4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2180

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=4020 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:3612

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
40KB

MD5
538d028e2180e354705c4d9f003fae6c

SHA1
46335d09d36567b91bf52c02e59dff1e77232141

SHA256
d72a5064aa6b0abcaee8b5232ac8e167b90f7790568082d18f2abf3ea801e90b

SHA512
dedca9c67cdb1a59dd47e2c6bcaaee1428d818d5db7d8b301c3452efa2daaa3474caf185fe57021cee31196ff444c3e21cd6f442fa3d2a4d7e15f33e2c277ed9

Download Submit
memory/2180-18-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/2180-17-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/3076-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3076-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3076-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download