600782d90d3ec673ac588de3266d9e8d8256f468052c68c7ed2ca135107e0206

Analysis

max time kernel
155s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14-03-2024 08:33

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General

Target

2024-03-14_4a056c4182977b6595258bf9b2a1713a_cryptolocker.exe
Size

123KB
MD5

4a056c4182977b6595258bf9b2a1713a
SHA1

a1addb93dbdb6d4f52223911f147e2882793226c
SHA256

600782d90d3ec673ac588de3266d9e8d8256f468052c68c7ed2ca135107e0206
SHA512

83b1e82e06cec69f032df54f5c1554270716f95c6393d2211495bba9500da0a70a58208a153859ff321658a1c6e89bf931a4d184b9e27ecd904806a21f1e7de1
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwMgdVh:u6a++OtEvwDpj6zzh

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-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	2024-03-14_4a056c4182977b6595258bf9b2a1713a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4784	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 2480 wrote to memory of 4784	2480	2024-03-14_4a056c4182977b6595258bf9b2a1713a_cryptolocker.exe	101
PID 2480 wrote to memory of 4784	2480	2024-03-14_4a056c4182977b6595258bf9b2a1713a_cryptolocker.exe	101
PID 2480 wrote to memory of 4784	2480	2024-03-14_4a056c4182977b6595258bf9b2a1713a_cryptolocker.exe	101

C:\Users\Admin\AppData\Local\Temp\2024-03-14_4a056c4182977b6595258bf9b2a1713a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_4a056c4182977b6595258bf9b2a1713a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4784

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=3692 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:1696

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\asih.exe

Filesize
123KB

MD5
095d0748311140c419939b6adf25e023

SHA1
877e74264dfcf2f2b2689d5dbe0ba3edf6a14339

SHA256
e375d89208189480ebb53d20eb4a880a07160c5e5c2cf0cf0bc4747b771b56ad

SHA512
4bd74d5504393707f81a512a052cc6c910fcf514844657462cd8c2f3fcb1902efef9ffd1c4b10296bcb8a99c0d9bf3494142a91b63e3c80b08f52cb716682f51

Download Submit
memory/2480-0-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2480-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2480-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4784-18-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4784-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download