f9cf47e1b055ac5518cef2f79f5a3c5f763cf951fc19ddd697f24c462d9429a3

Analysis

max time kernel
143s
max time network
153s
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, 21:34

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General

Target

2024-05-01_de457d4cfe116818344677ffe51e8ecf_cryptolocker.exe
Size

46KB
MD5

de457d4cfe116818344677ffe51e8ecf
SHA1

a53eb52d5f76a3a6eb2dc3a8ed1cbb9daa19ff4c
SHA256

f9cf47e1b055ac5518cef2f79f5a3c5f763cf951fc19ddd697f24c462d9429a3
SHA512

af3f63734bd5892db88e1c026963a62646b3a63301227ef6c0bf0ddf854f70001e9ea712178f3721d808e4aeb7e2191a4699108388672ab661de62fcceb6f442
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsil:V6QFElP6n+gMQMOtEvwDpjyaYaFAh39l

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023272-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023272-12.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	2024-05-01_de457d4cfe116818344677ffe51e8ecf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1404	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 4076 wrote to memory of 1404	4076	2024-05-01_de457d4cfe116818344677ffe51e8ecf_cryptolocker.exe	91
PID 4076 wrote to memory of 1404	4076	2024-05-01_de457d4cfe116818344677ffe51e8ecf_cryptolocker.exe	91
PID 4076 wrote to memory of 1404	4076	2024-05-01_de457d4cfe116818344677ffe51e8ecf_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-01_de457d4cfe116818344677ffe51e8ecf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_de457d4cfe116818344677ffe51e8ecf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1404

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=3684 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:672

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
78d337ad4a21aa0f56b609eee8fb6e20

SHA1
0723a0b0fda4468e66a4e7d687b930045273906d

SHA256
1caf20d44d3f26f13effa9687139e3cdfa35577289b5070fb4bd5a0f614056d6

SHA512
8dba946c11ed1e093206332e73a36676220a6a0f02ccce0d87e834c3ec011be07510a7dafeae7885f3030088ed39f91ad8a626398c6d3cd709d03ae01e04bbf4

Download Submit
memory/1404-17-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1404-18-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4076-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4076-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4076-2-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download