116252f981f1c3f25f39ef9c2225017dc1920ef95b45143915eca06fe6424c69

Analysis

max time kernel
142s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 21:30

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General

Target

2024-06-04_4e4486194b6178f8e0ff89a1ee070e69_cryptolocker.exe
Size

50KB
MD5

4e4486194b6178f8e0ff89a1ee070e69
SHA1

fe762551de8a2dfb346157803c9ff0a3c16c2dc3
SHA256

116252f981f1c3f25f39ef9c2225017dc1920ef95b45143915eca06fe6424c69
SHA512

b0b9c4ec9930e2fa7e96e9077441ecbdaf3dd7b268dc889a8ba258de0569018ea8f2cb380c521eacdffdf66a3b8bcc879e38f0144c4bfe5576b3e9939bb407e8
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vdXfb:X6QFElP6n+gJBMOtEvwDpjBtEdXfb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002326d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002326d-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	2024-06-04_4e4486194b6178f8e0ff89a1ee070e69_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1236	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 4964 wrote to memory of 1236	4964	2024-06-04_4e4486194b6178f8e0ff89a1ee070e69_cryptolocker.exe	89
PID 4964 wrote to memory of 1236	4964	2024-06-04_4e4486194b6178f8e0ff89a1ee070e69_cryptolocker.exe	89
PID 4964 wrote to memory of 1236	4964	2024-06-04_4e4486194b6178f8e0ff89a1ee070e69_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-06-04_4e4486194b6178f8e0ff89a1ee070e69_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_4e4486194b6178f8e0ff89a1ee070e69_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4964
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1236

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=4240 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
1⤵
PID:2240

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
50KB

MD5
d90d058932632b98cb66bdef00c13aaf

SHA1
32cd2400798ddefb1cdefe5080b4c72434663db7

SHA256
e1ec88e2b67810b2b1ebb9fa8c2e3fb7d8eacbe10c02681036d409015b1962ee

SHA512
32275f5f3af455e8fd802f8e2bc067ab287a09690bf0f8732e19700b20433f5aad3ca6ce9c5060989a6f88b34ed9b7a141bb2154767f53c9d3303405399b1e14

Download Submit
memory/1236-18-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1236-17-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4964-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4964-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4964-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download