fa3ec97c0f8cb40a1e2f96527482df1a1206a8927d7fed20922968648bbe9c03

Analysis

max time kernel
142s
max time network
154s
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, 17:30

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General

Target

2024-04-22_20422797274e6488ec03aeb266029cb2_cryptolocker.exe
Size

51KB
MD5

20422797274e6488ec03aeb266029cb2
SHA1

0f94e1e3a68d1f583f624c21eb250d89407f1093
SHA256

fa3ec97c0f8cb40a1e2f96527482df1a1206a8927d7fed20922968648bbe9c03
SHA512

070a632f33c03c81684e6a7df140d64d2b5d0549c57e19fda30ed5c4b3d553574399cabe6a562785b4f6cc83e00f891db3142bbb978bbaf18b36f39e77aa2df3
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vaTCFWpzgVoI:X6QFElP6n+gJBMOtEvwDpjBtELVd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325b-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_20422797274e6488ec03aeb266029cb2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
680	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 1372 wrote to memory of 680	1372	2024-04-22_20422797274e6488ec03aeb266029cb2_cryptolocker.exe	92
PID 1372 wrote to memory of 680	1372	2024-04-22_20422797274e6488ec03aeb266029cb2_cryptolocker.exe	92
PID 1372 wrote to memory of 680	1372	2024-04-22_20422797274e6488ec03aeb266029cb2_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-04-22_20422797274e6488ec03aeb266029cb2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_20422797274e6488ec03aeb266029cb2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1372
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:680

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=1028 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
1⤵
PID:4016

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
52KB

MD5
e7389f369e756375a4fb53e85e2952f8

SHA1
6a3b1e9270f24b58c91fab06b42ff49918b5ee05

SHA256
79ba76629f6633c0a0d97869423175f6f27045585fd0912ca73517198b777e71

SHA512
9c97214e9cd97f7466a48509a8716ba5564a82d2cf71cf815dc62cbc476b9337a8e73264909efc21479a8229460ec91f44b922e0a7125622d07f449f948a6686

Download Submit
memory/680-18-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/680-17-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/1372-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1372-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1372-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download