f7a2360a6ae87b9d8c33d0a11da1e5f84dddece3ab33b7937961e720a5bacce8

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
29/03/2024, 02:53

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General

Target

2024-03-29_59a1651198ddb3b448af10df6d95988d_cryptolocker.exe
Size

54KB
MD5

59a1651198ddb3b448af10df6d95988d
SHA1

cc2a08b4ba5a4d18743af2a47c2a6cb6abf44f35
SHA256

f7a2360a6ae87b9d8c33d0a11da1e5f84dddece3ab33b7937961e720a5bacce8
SHA512

430f50ec979754c37f7c380a98872d52353f525c73c4f46ac28827269fe7e5cbace04e5d0a900a372f08c6353d8671f4ee9dc6e57b5fbcd8c7359623179a8906
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CCjg0:79mqyNhQMOtEvwDpjBPY7xv3g8O0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/820-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002325a-13.dat	CryptoLocker_rule2
behavioral2/memory/820-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/820-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002325a-13.dat	CryptoLocker_set1
behavioral2/memory/820-25-0x0000000000500000-0x000000000050F000-memory.dmp	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	2024-03-29_59a1651198ddb3b448af10df6d95988d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1952	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 820 wrote to memory of 1952	820	2024-03-29_59a1651198ddb3b448af10df6d95988d_cryptolocker.exe	95
PID 820 wrote to memory of 1952	820	2024-03-29_59a1651198ddb3b448af10df6d95988d_cryptolocker.exe	95
PID 820 wrote to memory of 1952	820	2024-03-29_59a1651198ddb3b448af10df6d95988d_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-03-29_59a1651198ddb3b448af10df6d95988d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_59a1651198ddb3b448af10df6d95988d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:820
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1952

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=1408 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:5056

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
54KB

MD5
dc4d51be09c665c1f6458b17754c85c8

SHA1
d0ad809705299eb0fe1b84a19f9ca28a1cfd6d9f

SHA256
a7a9ba9fb0e4e5c7b9d06670140a83b0d3651d81388222e06acede93d8def627

SHA512
5c62566016c36e4fbbf7d1105fe452a065ce5af87602b7058d591a9e035bedc4feb6f00f7c6d0df0a6df8e9307eae4046ef7bc2aea85c977227b7eb8f12fcbcc

Download Submit
memory/820-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/820-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/820-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/820-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/820-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1952-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1952-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download