e1e3bc4b3d64670cdf12e1f2fff9988bdbb080d77bf210b7906011702bb47857

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30/04/2024, 00:30

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General

Target

2024-04-30_3fdfce29d77027618381cde6f0e2811a_cryptolocker.exe
Size

74KB
MD5

3fdfce29d77027618381cde6f0e2811a
SHA1

0b909b564cd642e2839fcdb4915e55f6149c80a1
SHA256

e1e3bc4b3d64670cdf12e1f2fff9988bdbb080d77bf210b7906011702bb47857
SHA512

e0b81f476c6528d922286ada42fe00db9bad465217d85b2901e161358a7e1b23b784930827ad08f16bb290909e6a49dbd937c041c8114d66465073e2f02d0a80
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsZ:X6a+SOtEvwDpjBZYvQd2q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b7f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b7f-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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-04-30_3fdfce29d77027618381cde6f0e2811a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
372	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 2636 wrote to memory of 372	2636	2024-04-30_3fdfce29d77027618381cde6f0e2811a_cryptolocker.exe	86
PID 2636 wrote to memory of 372	2636	2024-04-30_3fdfce29d77027618381cde6f0e2811a_cryptolocker.exe	86
PID 2636 wrote to memory of 372	2636	2024-04-30_3fdfce29d77027618381cde6f0e2811a_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-30_3fdfce29d77027618381cde6f0e2811a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_3fdfce29d77027618381cde6f0e2811a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:372

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
8e38856f0cdff3ba0cab5bda581c41b4

SHA1
8e87d99c516d4fe39f3665d16a462b6a9157815e

SHA256
cf7915bf5eeb1d1a4c8902b0493536a63cddc416975aa382b5f6ffb5ac645b04

SHA512
c8b9239872d4fad9d426a3f337aabd51de3197a93617c2b508909a1907fec79976c5099e954753313beaed3811ad0830c970d94751c56e927d8b62c1bdf9aa94

Download Submit
memory/372-23-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/2636-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2636-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2636-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download