c6b792ba28df6ef247ccc292017e95361e8549dd230cab66f4447ec2dcb6e909

Analysis

max time kernel
137s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
20/05/2024, 22:22

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General

Target

2024-05-20_2ec27a7f3d8ff34965a7865dd7039fcb_cryptolocker.exe
Size

44KB
MD5

2ec27a7f3d8ff34965a7865dd7039fcb
SHA1

e6a326c69f108d89f6d5d2fd9f8cc46e9bb3ff37
SHA256

c6b792ba28df6ef247ccc292017e95361e8549dd230cab66f4447ec2dcb6e909
SHA512

f297b4e080329e5bbb746b527bbe7549519b151ba23bf5a83b6b2a640feebae4c970b4d740755686248fdf7c310c7da660fc30f596f2e09a2f0e2fa9e56c2b5c
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD9H7A:X6QFElP6n+gJQMOtEvwDpjBmzDkWDt7A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002323f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002323f-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	2024-05-20_2ec27a7f3d8ff34965a7865dd7039fcb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4492	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 4140 wrote to memory of 4492	4140	2024-05-20_2ec27a7f3d8ff34965a7865dd7039fcb_cryptolocker.exe	90
PID 4140 wrote to memory of 4492	4140	2024-05-20_2ec27a7f3d8ff34965a7865dd7039fcb_cryptolocker.exe	90
PID 4140 wrote to memory of 4492	4140	2024-05-20_2ec27a7f3d8ff34965a7865dd7039fcb_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-20_2ec27a7f3d8ff34965a7865dd7039fcb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_2ec27a7f3d8ff34965a7865dd7039fcb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4140
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4492

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=3716 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
1⤵
PID:2592

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
44KB

MD5
03bd61c2b23a108e9f22144c22a2a2af

SHA1
8adc120ac59e4c5276dfdb9e975f7af5cdbaba64

SHA256
7104a8fa6945472b36425d8434fdd68aaed1f8a8573b9979e11e600c4aef4f40

SHA512
43e45a0a4f68a5bfa30ede43c82af2cd461e045eee894c5b4ca616e091f9f6c74c6262ed6772c2814c393ad65af274debbe6b3c9ffd00b86aa883cde9a64aaf0

Download Submit
memory/4140-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4140-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4140-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4492-17-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4492-18-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download