c86b2c8322b0087aa6be6487add3de03080d0b1b670a5fc5490ebe4245ade7c0

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 07:23

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General

Target

2024-03-06_391dbaa3799a4f8b3cc5a40ea602acf0_cryptolocker.exe
Size

75KB
MD5

391dbaa3799a4f8b3cc5a40ea602acf0
SHA1

21d63d6ea8dfa40c1c6bd60e51a5403fcb107640
SHA256

c86b2c8322b0087aa6be6487add3de03080d0b1b670a5fc5490ebe4245ade7c0
SHA512

37cc98bf541a1507ee9b29b5822f1866ddc5e83bb8319b36103060d1a7c19071cd6debda52a37b808524df19c3e36c815e2dacb43a74c20761d11d69d41cfb4e
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1siMO1:X6a+SOtEvwDpjBZYvQd2b

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023264-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023264-12.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	2024-03-06_391dbaa3799a4f8b3cc5a40ea602acf0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3676	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 2004 wrote to memory of 3676	2004	2024-03-06_391dbaa3799a4f8b3cc5a40ea602acf0_cryptolocker.exe	97
PID 2004 wrote to memory of 3676	2004	2024-03-06_391dbaa3799a4f8b3cc5a40ea602acf0_cryptolocker.exe	97
PID 2004 wrote to memory of 3676	2004	2024-03-06_391dbaa3799a4f8b3cc5a40ea602acf0_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-06_391dbaa3799a4f8b3cc5a40ea602acf0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_391dbaa3799a4f8b3cc5a40ea602acf0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3676

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=4000 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:4564

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
75KB

MD5
d0af05878546d6108d5b7deb331a620d

SHA1
1b08c91edf5096129b49019a4466175c6965f22e

SHA256
c903a3d9e34c44e1f8a7730231f86f0732d9be8ff069057e8a3b18e956cbc1ea

SHA512
1aa30016cc0ba922c10df2378cc07bf82c3c2517bb4baa3a94545d353ee17be2158e9b8284f9cd6fe8f71255c82b3bc717555a6a0a4ac85d0fabfc9bd64cd314

Download Submit
memory/2004-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/2004-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/2004-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3676-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3676-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download