6f4a1ba016109311630133cb080aa03ed1280c1e3099f7a17975498bc3eb0d22

Analysis

max time kernel
147s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 23:03

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General

Target

2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe
Size

38KB
MD5

4aebd60e7ff277321ab78c0746d6fb51
SHA1

789b8dbe3315f2146581c4d77deed242f701d8a5
SHA256

6f4a1ba016109311630133cb080aa03ed1280c1e3099f7a17975498bc3eb0d22
SHA512

c8aa2307cd5abe2975be5c93e3cb43037b6e743c5137d764e2b5df63966214d7555378a406a0690f3219f7180af560394bd28525c690927a5ff2e979b3e919aa
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY9w:qDdFJy3QMOtEvwDpjjWMl7T/

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4284-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4284-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002325d-14.dat	CryptoLocker_rule2
behavioral2/memory/4228-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4284-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4284-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002325d-14.dat	CryptoLocker_set1
behavioral2/memory/4228-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4284-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4284-10-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002325d-14.dat	UPX
behavioral2/memory/4228-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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	2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4228	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4284-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4284-10-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000002325d-14.dat	upx
behavioral2/memory/4228-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 4284 wrote to memory of 4228	4284	2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe	90
PID 4284 wrote to memory of 4228	4284	2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe	90
PID 4284 wrote to memory of 4228	4284	2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_4aebd60e7ff277321ab78c0746d6fb51_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4284
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4228

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=4088 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
1⤵
PID:824

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
38KB

MD5
161c2215709efb00e9def5ea04f6f110

SHA1
db08d372f768168a02772ff1f03b471810a578db

SHA256
1356104043724105ef079a02e223c4c23f50038c31654a52dcfd2ecb126f747b

SHA512
8086ecc87230b5ba464bae720ec02c270dce0def81a99bbbc6364d8ed82ce1b2744be63d8c35f657e9b9ec4497d62c0255510a3703d785f27dc28aeaab731fdc

Download Submit
memory/4228-19-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4228-20-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4228-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4284-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4284-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4284-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4284-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4284-10-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download