062b021e647c46610efc3172452b4006afcf992b131c01aedccd06543845847a

Analysis

max time kernel
147s
max time network
167s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
20-04-2024 04:44

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General

Target

2024-04-20_ac7f9fb476e82a0272c4f41768f8d7f6_cryptolocker.exe
Size

74KB
MD5

ac7f9fb476e82a0272c4f41768f8d7f6
SHA1

f03e5689695f2190c61a501e306d9439f706ff4c
SHA256

062b021e647c46610efc3172452b4006afcf992b131c01aedccd06543845847a
SHA512

849af5a0c6320944c1f17009cdbcb323a85d4167a3660036c30031ee69b364497f5810d49e392c350e3c54c06b851805afb6594a85d83414a8ab4a1ab278c3df
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHs9:X6a+SOtEvwDpjBZYvQd2O

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023246-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023246-12.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	2024-04-20_ac7f9fb476e82a0272c4f41768f8d7f6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3496	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 1516 wrote to memory of 3496	1516	2024-04-20_ac7f9fb476e82a0272c4f41768f8d7f6_cryptolocker.exe	91
PID 1516 wrote to memory of 3496	1516	2024-04-20_ac7f9fb476e82a0272c4f41768f8d7f6_cryptolocker.exe	91
PID 1516 wrote to memory of 3496	1516	2024-04-20_ac7f9fb476e82a0272c4f41768f8d7f6_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-20_ac7f9fb476e82a0272c4f41768f8d7f6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_ac7f9fb476e82a0272c4f41768f8d7f6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3496

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=4084 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
1⤵
PID:4264

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
74KB

MD5
79aa43cb9625e40a4dbb760a8955113c

SHA1
63b54d87c60f84cb5ba30b18cb20ec0deed7c37c

SHA256
3c421d032990e3e5a3cedbdaace68a773d4373479376d40c550bdc46538016dc

SHA512
74304de7f87924107218f826759644c6b59151ad400cd46b967ff39c845c74b691d2deac867b09fe238021dcc7b081f12db9759ed5919ab270fd02f41dcbfd3a

Download Submit
memory/1516-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1516-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1516-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/3496-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3496-19-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download