f1fbd7ad7e7413ce1496ed9071440ac3b014a782dbb77228764e3595cedc89ce

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/05/2024, 04:49

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General

Target

2024-05-04_92a048c996fe0af089040b9d55805699_cryptolocker.exe
Size

46KB
MD5

92a048c996fe0af089040b9d55805699
SHA1

3dbdab0202ff4ed6eb59b40967ae209b1c8a224c
SHA256

f1fbd7ad7e7413ce1496ed9071440ac3b014a782dbb77228764e3595cedc89ce
SHA512

504e841f550b39bea5208214ef475695209ee33e438e05af1b10652f13440f734c7fb2f515b9783158380b365ebc815ebeea5f7773dcb493c6f91d5405961255
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsBT:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3WT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023219-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023219-12.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	2024-05-04_92a048c996fe0af089040b9d55805699_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3356	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 4656 wrote to memory of 3356	4656	2024-05-04_92a048c996fe0af089040b9d55805699_cryptolocker.exe	90
PID 4656 wrote to memory of 3356	4656	2024-05-04_92a048c996fe0af089040b9d55805699_cryptolocker.exe	90
PID 4656 wrote to memory of 3356	4656	2024-05-04_92a048c996fe0af089040b9d55805699_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-04_92a048c996fe0af089040b9d55805699_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_92a048c996fe0af089040b9d55805699_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3356

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=3712 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
1⤵
PID:3428

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
46KB

MD5
61f71d000591f0c1ab92acce15b9f4d1

SHA1
d8da142de3512d2e70e0e1ecb840615dc6fa57ba

SHA256
dc8f52f9878da010e5dd587ddd9cccbced26c92ca2ef1d2f210b2e9616b38156

SHA512
303ae8ea9ebdb770f88a3e74398cb2b2fd4884fa4b4ac40ff338bc8384faabba5695ead48dc68aac3466ceb3e5a1089ee5a36858b4ba77dd45713a5d0413a6ae

Download Submit
memory/3356-17-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/3356-23-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4656-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4656-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4656-2-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download