49d22793f668ae691847f1dd5dafcbfd70cc92a7ae5468bec2bafc2555451da4

Analysis

max time kernel
152s
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
01-05-2024 10:25

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General

Target

2024-05-01_617e19ca8da2e49e6b7ee4fd8e099c65_cryptolocker.exe
Size

35KB
MD5

617e19ca8da2e49e6b7ee4fd8e099c65
SHA1

121499d04866a205eee73b0f32e814196dcb3a5f
SHA256

49d22793f668ae691847f1dd5dafcbfd70cc92a7ae5468bec2bafc2555451da4
SHA512

b044865561191aab9a1128d55bf12c150a2ddea165f8a6d168e2988a6afa8ee2204f55ce3d5dacd33ede16978d4bae9e265f0c2352ad3382265c1f840f6922a5
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunIVpeNs23mAA6lxJ:bA74zYcgT/Ekd0ryfjPIunqpeNswm6J

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001000000002323e-12.dat	CryptoLocker_rule2

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	2024-05-01_617e19ca8da2e49e6b7ee4fd8e099c65_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4728	hasfj.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 3400 wrote to memory of 4728	3400	2024-05-01_617e19ca8da2e49e6b7ee4fd8e099c65_cryptolocker.exe	91
PID 3400 wrote to memory of 4728	3400	2024-05-01_617e19ca8da2e49e6b7ee4fd8e099c65_cryptolocker.exe	91
PID 3400 wrote to memory of 4728	3400	2024-05-01_617e19ca8da2e49e6b7ee4fd8e099c65_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-01_617e19ca8da2e49e6b7ee4fd8e099c65_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_617e19ca8da2e49e6b7ee4fd8e099c65_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3400
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4728

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=4076 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:8
1⤵
PID:5052

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\hasfj.exe

Filesize
35KB

MD5
f6b1d379f01dca31a46ab246dd59e33d

SHA1
c0f4fc31a6fe94b88846bb06b277726a984a23f8

SHA256
55d8b66fa00c07cb1f1430ab990b6c9d143920f66d546116bd62cef184c6bc93

SHA512
925bd9c34a34c9f92cf0c9aece49b0cf19c5f405f7bcc81f7efa3de1bf4b83138e857cbc07c6fb98c81ef95c1caa7d2100219276f57990a70d34dcd5cdb1a8ed

Download Submit
memory/3400-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3400-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3400-2-0x0000000002290000-0x0000000002296000-memory.dmp

Filesize
24KB

Download
memory/4728-18-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4728-23-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download