af6e8bcafce4dc1f172cdde89b10b5a9f14de72a07e1ee73847f7df75a6e9372

Analysis

max time kernel
142s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2024, 10:38

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General

Target

2024-05-24_8224be6fc777d933f35e3eebb41b9e54_cryptolocker.exe
Size

45KB
MD5

8224be6fc777d933f35e3eebb41b9e54
SHA1

0679a33c9f436526e5164cffd657dfa8e5ee4fbe
SHA256

af6e8bcafce4dc1f172cdde89b10b5a9f14de72a07e1ee73847f7df75a6e9372
SHA512

dd69993abc01162d038e461de5ef221aa36b2560e1cab0f7ca2c71c865fb558e9af513c2a249f1912938e8e90b0e057aacd9b993c7273b8c35fa0175f0cb7abe
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD90:X6QFElP6n+gJQMOtEvwDpjBmzDkWDa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023259-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023259-12.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	2024-05-24_8224be6fc777d933f35e3eebb41b9e54_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3996	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 1804 wrote to memory of 3996	1804	2024-05-24_8224be6fc777d933f35e3eebb41b9e54_cryptolocker.exe	90
PID 1804 wrote to memory of 3996	1804	2024-05-24_8224be6fc777d933f35e3eebb41b9e54_cryptolocker.exe	90
PID 1804 wrote to memory of 3996	1804	2024-05-24_8224be6fc777d933f35e3eebb41b9e54_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-24_8224be6fc777d933f35e3eebb41b9e54_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_8224be6fc777d933f35e3eebb41b9e54_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1804
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3996

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=4104 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:4560

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
45KB

MD5
e83ab34871a5924900157eb114252a89

SHA1
914d041f9eae38c3c167d03fdcdae8506953e57a

SHA256
a621319527b1ab0f0d33b3830e6636b5c8600a7467546acdff3a821bf7630a48

SHA512
4f75cf828730ae1b9a80db8416fb5cc58d1dc2fd1cdca84e3a5136ad034be83e457b0acb2786d862269c4423cfd762e03b42652b53dc09899a93e14dc764035e

Download Submit
memory/1804-0-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download
memory/1804-1-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download
memory/1804-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/3996-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3996-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download