bc424e51e0f9558b5849d25c8c20c7b3544473c6e2e14e539875ae5b7357a0cd

Analysis

max time kernel
142s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 06:01

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General

Target

2024-04-15_7053916314629c8e2ecf224d4851fdd3_cryptolocker.exe
Size

45KB
MD5

7053916314629c8e2ecf224d4851fdd3
SHA1

d9c41e4aa54fa798778262c9cd110db4de4e2560
SHA256

bc424e51e0f9558b5849d25c8c20c7b3544473c6e2e14e539875ae5b7357a0cd
SHA512

5e5554bcc5604c59cef5ddda1c14f151c29748083390e649fb0b49f169127eef623bef3a2f5f055bd08e40d42538c768bf55b32e16ed2363ebe0675b66792a23
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPo5:P6QFElP6k+MRQMOtEvwDpjBQpVXz5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/500-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023262-13.dat	CryptoLocker_rule2
behavioral2/memory/500-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1924-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/500-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023262-13.dat	CryptoLocker_set1
behavioral2/memory/500-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1924-26-0x0000000000500000-0x000000000050B000-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	2024-04-15_7053916314629c8e2ecf224d4851fdd3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1924	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 500 wrote to memory of 1924	500	2024-04-15_7053916314629c8e2ecf224d4851fdd3_cryptolocker.exe	91
PID 500 wrote to memory of 1924	500	2024-04-15_7053916314629c8e2ecf224d4851fdd3_cryptolocker.exe	91
PID 500 wrote to memory of 1924	500	2024-04-15_7053916314629c8e2ecf224d4851fdd3_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-15_7053916314629c8e2ecf224d4851fdd3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_7053916314629c8e2ecf224d4851fdd3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:500
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1924

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=1324 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
1⤵
PID:5564

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
45KB

MD5
82dee6842c9bd2ab6ad3381d6d2db09e

SHA1
3451db0c05c6ac9cf7fa85dbc3d61ad0d5de086c

SHA256
1df716a9e3e02abcd398835bbdbac3f303adc9d4715578d70a571325bbc76e5c

SHA512
814f5f45c7a5fcfa6ec4bf6037f4b41f0e29c65fe50024039a3e789a477cbf598b54a24075ab4d114dbce8ce142fde8466107cf758ccd26b99dfe429dcbe00f5

Download Submit
memory/500-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/500-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/500-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/500-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/500-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1924-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1924-22-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1924-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download