0d671c0fe0bfa4d277f3497e30cd20792186659b78c954b7807d4c3b2f006c5f

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 06:33

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General

Target

2024-05-31_5f96721517824c44fe9fc5568facea85_cryptolocker.exe
Size

47KB
MD5

5f96721517824c44fe9fc5568facea85
SHA1

1fe1f6c5263ea621388f9d629b82d51d1077c225
SHA256

0d671c0fe0bfa4d277f3497e30cd20792186659b78c954b7807d4c3b2f006c5f
SHA512

e774b38bae33f40904f0aa2e394c718a59a9013c9aee9fdc2024d9239882ae227397a7a9a008a3907891926541bad42693e2ca35b4d1c7f7527dab436433c263
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsB7A:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3WE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023537-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023537-12.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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-31_5f96721517824c44fe9fc5568facea85_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4592	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 3732 wrote to memory of 4592	3732	2024-05-31_5f96721517824c44fe9fc5568facea85_cryptolocker.exe	90
PID 3732 wrote to memory of 4592	3732	2024-05-31_5f96721517824c44fe9fc5568facea85_cryptolocker.exe	90
PID 3732 wrote to memory of 4592	3732	2024-05-31_5f96721517824c44fe9fc5568facea85_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-31_5f96721517824c44fe9fc5568facea85_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_5f96721517824c44fe9fc5568facea85_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3732
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4592

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 --field-trial-handle=1280,i,1697479186275492802,18058102846092193784,262144 --variations-seed-version --mojo-platform-channel-handle=4412 /prefetch:8
1⤵
PID:3284

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
47KB

MD5
3be250583e436c459d37a90e052eb415

SHA1
77a1aa3a48d8fe6125eea0c40fd3dd9793db8524

SHA256
0d9e4c35aa22406186e1b6a19b0aaca39a9f1cc3abebaec207940ed1860fc01f

SHA512
6a431fbc1d3fac5dee30c837c9d0454ac860814f695f75b476d4eedd7a49f351daa44f7de447d64e4503d69e3913e11fba349a83f24133dfb9f0703544d4f47f

Download Submit
memory/3732-0-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3732-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3732-8-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4592-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4592-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download