af9cb155fde17b6540e2f75c6db9aa5f77ad874767e2ea9f95e54c6330f09925

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/06/2024, 00:27

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General

Target

2024-06-30_7a4fdbb13c66da86c2308f753d70ecf0_cryptolocker.exe
Size

78KB
MD5

7a4fdbb13c66da86c2308f753d70ecf0
SHA1

1341605a37ce997c03c102024cd41f58d5a0be03
SHA256

af9cb155fde17b6540e2f75c6db9aa5f77ad874767e2ea9f95e54c6330f09925
SHA512

b178abeb9a411ffaa0d4c6a62d94e80dac4b32f5c076e1aebbc6ae5d585123cc13500f8fd975be7a1bfe37aa068a94f201c029c012d15d7d93c22e5877cb7d2d
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsoLkt4:X6a+SOtEvwDpjBZYvQd2d

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-30_7a4fdbb13c66da86c2308f753d70ecf0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
576	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 2852 wrote to memory of 576	2852	2024-06-30_7a4fdbb13c66da86c2308f753d70ecf0_cryptolocker.exe	80
PID 2852 wrote to memory of 576	2852	2024-06-30_7a4fdbb13c66da86c2308f753d70ecf0_cryptolocker.exe	80
PID 2852 wrote to memory of 576	2852	2024-06-30_7a4fdbb13c66da86c2308f753d70ecf0_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-06-30_7a4fdbb13c66da86c2308f753d70ecf0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-30_7a4fdbb13c66da86c2308f753d70ecf0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:576

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
79KB

MD5
f6fe3ebcb8f6f375768ef4eb47c089da

SHA1
f4e4535e6002235241f93e18f41e885c8f3e72f9

SHA256
9d759d935046a4ef64dd0ae4af747258cc0252aa1a69fec656e7c1ec69c4f82b

SHA512
8bfdd463ce67096fe8865b84ffe9a9ae731deb80ae0a9b010ccc1f857c101e26c2f6a9f0421803d0fa07b36433a79ae314fb39b6517d3d8b232cccbf81fa1df4

Download Submit
memory/576-17-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/576-23-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/2852-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2852-1-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2852-8-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download