8fc2f9001d875fd0d411fd8949f24887ba10fbb60761a66884c3ec82e2b1b593

Analysis

max time kernel
143s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/03/2024, 05:28

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General

Target

2024-03-09_4b96bdf2520a0666935c80e5932f8220_cryptolocker.exe
Size

63KB
MD5

4b96bdf2520a0666935c80e5932f8220
SHA1

88e5fe1afc5dd9a7bc09d9cb523d4813716cfcf8
SHA256

8fc2f9001d875fd0d411fd8949f24887ba10fbb60761a66884c3ec82e2b1b593
SHA512

d46a8f66d53d5779d6e037e6f0c1da117eb453c87e9dc287514c35b9847195f2c9d3e3a79284375ef73cf8685a7434cbfbb009d26eb66b4dbdbcc8367cb4175a
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVCbmh85u:V6a+pOtEvwDpjvN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023263-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023263-12.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	2024-03-09_4b96bdf2520a0666935c80e5932f8220_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3588	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 228 wrote to memory of 3588	228	2024-03-09_4b96bdf2520a0666935c80e5932f8220_cryptolocker.exe	99
PID 228 wrote to memory of 3588	228	2024-03-09_4b96bdf2520a0666935c80e5932f8220_cryptolocker.exe	99
PID 228 wrote to memory of 3588	228	2024-03-09_4b96bdf2520a0666935c80e5932f8220_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-09_4b96bdf2520a0666935c80e5932f8220_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_4b96bdf2520a0666935c80e5932f8220_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:228
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3588

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=3936 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:2108

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
63KB

MD5
d9da40114872cdf7d1dc16092e239b0b

SHA1
539d6658be388228578b5c06104e18c32106bb8d

SHA256
7237b953fad575dec9938e8ae3954311e8026aa2ec39a70211598628039307fa

SHA512
3ab0e8acd253d0d00b2a93b5e658708083bae73fc831fc806102bde12ac3f3421840a2d2486a7fef502b2d02e1a12c1586987fd0c404ab325d2d166e7b7c0925

Download Submit
memory/228-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/228-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/228-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download