11121cdc8039ec1fcc79a1c1323505d1320216f53a4f0a8fa6945e7ce6548f67

Analysis

max time kernel
142s
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
24/05/2024, 05:38

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General

Target

2024-05-24_ba554dfc128348d00135679d7056cd8f_cryptolocker.exe
Size

42KB
MD5

ba554dfc128348d00135679d7056cd8f
SHA1

e30b7f70eaa26b689d08d54e179754f83d499797
SHA256

11121cdc8039ec1fcc79a1c1323505d1320216f53a4f0a8fa6945e7ce6548f67
SHA512

f5112ae8f9625f6a207376118212618fe3b041a1e801df09066d3e4c7b3b60c565ec14ceb37d10b41c4a5a7a0b55d79cc4226639c79886afcfbbc01a91435cb7
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCyD/95c:X6QFElP6n+gJQMOtEvwDpjBsYK/fbDF+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f00000002321d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000f00000002321d-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	2024-05-24_ba554dfc128348d00135679d7056cd8f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2220	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 1576 wrote to memory of 2220	1576	2024-05-24_ba554dfc128348d00135679d7056cd8f_cryptolocker.exe	92
PID 1576 wrote to memory of 2220	1576	2024-05-24_ba554dfc128348d00135679d7056cd8f_cryptolocker.exe	92
PID 1576 wrote to memory of 2220	1576	2024-05-24_ba554dfc128348d00135679d7056cd8f_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-05-24_ba554dfc128348d00135679d7056cd8f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_ba554dfc128348d00135679d7056cd8f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2220

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=4012 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
1⤵
PID:5068

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
42KB

MD5
86761b6cb6181bdf0184a89f26f2517b

SHA1
818d8749421e4c6165150489ee4c1dc24249010c

SHA256
60469fca9a47878ca2f647c265eace7c91220a0dc5b24a8dbe9bff760c43ecf3

SHA512
123697f8bc1658ff8fda197536a9b027e8ede718de2ce51c7e35c7d49d48aed5c5a65bd1346b2a54c2041452811be6a017a38f0d73caf180d2c79af63cf6fe59

Download Submit
memory/1576-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1576-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1576-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download