5dbc4fd8ff6ccc16509240eaf8a9c2be6669d7d6dba49012f2bbc582c7ddd9eb

Analysis

max time kernel
138s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 14:11

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General

Target

2024-03-15_e83975a026c19acf720b16693ae5c7d6_cryptolocker.exe
Size

50KB
MD5

e83975a026c19acf720b16693ae5c7d6
SHA1

398a6523dd3d81d94acd31c0f5c5c41696388713
SHA256

5dbc4fd8ff6ccc16509240eaf8a9c2be6669d7d6dba49012f2bbc582c7ddd9eb
SHA512

7dcb04403781ae23ff65f7cedbdc84a1b4260cb6e42b75ed8cbb5b222f194afd7a2cd6bf684acfe6ff97908fef1a6226906c3c7a7aa434a72ca232f8fb4aab16
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKxa:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7G

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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	2024-03-15_e83975a026c19acf720b16693ae5c7d6_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4704	hurok.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 4828 wrote to memory of 4704	4828	2024-03-15_e83975a026c19acf720b16693ae5c7d6_cryptolocker.exe	100
PID 4828 wrote to memory of 4704	4828	2024-03-15_e83975a026c19acf720b16693ae5c7d6_cryptolocker.exe	100
PID 4828 wrote to memory of 4704	4828	2024-03-15_e83975a026c19acf720b16693ae5c7d6_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-15_e83975a026c19acf720b16693ae5c7d6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_e83975a026c19acf720b16693ae5c7d6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4828
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4704

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=5164 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:4020

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\hurok.exe

Filesize
50KB

MD5
5d16fa6c51d6c71dbebc7d1c10692b16

SHA1
88e8410697068656ee7693abd9828b6a9103608f

SHA256
ff784b8c9d0d0946cd347734009aff3fe54c95488348b9ff0a9e106056c31a2f

SHA512
ee62a273973e3d400d4b6bf4f286460bbd1c44634b0c18f041296d3c74a0f9b4a0b9bd95c191ffac1ebc4eb0ea5487bdc17c1f031fec68a522c5cad0e0c756c6

Download Submit
memory/4704-20-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4828-0-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/4828-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/4828-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download