fb37eb2308ef7c8bc08eee207453532cfd7be52a28b0ddebc0a7d3c9fc65d5b1

Analysis

max time kernel
142s
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
13/03/2024, 06:22

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General

Target

2024-03-13_162cd2a2e7b6e766a81a4928c4c96a92_cryptolocker.exe
Size

37KB
MD5

162cd2a2e7b6e766a81a4928c4c96a92
SHA1

beceae9a7d5e1d5387f4d72ea8d4594a31ecaf67
SHA256

fb37eb2308ef7c8bc08eee207453532cfd7be52a28b0ddebc0a7d3c9fc65d5b1
SHA512

36f84ee5191d8982748d45b8e8b8c456567258668bbe7177c89be9d589c560afb7a13b0e9f724e5fb5d067baf9b15efe7d942c3b3cc71f2df36da042655d845c
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHO:X6QFElP6n+gJQMOtEvwDpjBmzDg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002325c-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	2024-03-13_162cd2a2e7b6e766a81a4928c4c96a92_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2484	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 3956 wrote to memory of 2484	3956	2024-03-13_162cd2a2e7b6e766a81a4928c4c96a92_cryptolocker.exe	101
PID 3956 wrote to memory of 2484	3956	2024-03-13_162cd2a2e7b6e766a81a4928c4c96a92_cryptolocker.exe	101
PID 3956 wrote to memory of 2484	3956	2024-03-13_162cd2a2e7b6e766a81a4928c4c96a92_cryptolocker.exe	101

C:\Users\Admin\AppData\Local\Temp\2024-03-13_162cd2a2e7b6e766a81a4928c4c96a92_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_162cd2a2e7b6e766a81a4928c4c96a92_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2484

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=4116 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:2416

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
37KB

MD5
919423e5a7287fd30759aa64681a605c

SHA1
94178eab5e867e9533574a093c33b07c515a1aad

SHA256
8a96199d0de9cca6cc9329e710457910c8ccb8dfc99f1bfe9a6e70e55360c2ce

SHA512
5c7dad3f4ccc74679017065abd023a12964b14531ac4bb92372211e507be8fa72e2dd3afdae77ba71abc4ecd78ba8a8110c291bc5fc0f3d23c2340121f6ee330

Download Submit
memory/2484-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2484-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3956-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3956-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3956-2-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download