d9dd5c76de3d6d2fe2e1bbbd92984b5c88957153a2c3ef5660cbd308e02116d7

Analysis

max time kernel
149s
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
09-05-2024 21:52

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General

Target

2024-05-09_3b89a259a0bdb17dd8cc0223ca5f9dd6_cryptolocker.exe
Size

75KB
MD5

3b89a259a0bdb17dd8cc0223ca5f9dd6
SHA1

f76ca7c73ed5d639888197707f450b187e567ac6
SHA256

d9dd5c76de3d6d2fe2e1bbbd92984b5c88957153a2c3ef5660cbd308e02116d7
SHA512

8e91924e75c90e578067436fd22dcf6bb0a3f564c736155c5f240bb1b372cef97e2d2279d174bc0068a11153592d7f8110b10214c1a91bf096434e66f7f2c5d7
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsS:X6a+SOtEvwDpjBZYvQd2B

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023270-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023270-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-09_3b89a259a0bdb17dd8cc0223ca5f9dd6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
732	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 4948 wrote to memory of 732	4948	2024-05-09_3b89a259a0bdb17dd8cc0223ca5f9dd6_cryptolocker.exe	80
PID 4948 wrote to memory of 732	4948	2024-05-09_3b89a259a0bdb17dd8cc0223ca5f9dd6_cryptolocker.exe	80
PID 4948 wrote to memory of 732	4948	2024-05-09_3b89a259a0bdb17dd8cc0223ca5f9dd6_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-05-09_3b89a259a0bdb17dd8cc0223ca5f9dd6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_3b89a259a0bdb17dd8cc0223ca5f9dd6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4948
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:732

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
4b3ab6a67acc4da8f28e42081cb39a9e

SHA1
386188dd1467c8a5e3a4de4d874d86fe03beb4c5

SHA256
c295a70a207a851b3d303123cec4da91a4a0bfd443e0dec311fbfd004624f710

SHA512
e2266548d84f53fbd7d519ac40b4eed104c3b24de835d921a6f6f2d8b8bfb7b3681782c95b5f4a74cc6664868535c59c1d55112bc1c7aaa0168c6ce7d6ff1338

Download Submit
memory/732-17-0x0000000001F80000-0x0000000001F86000-memory.dmp

Filesize
24KB

Download
memory/732-23-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/4948-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4948-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4948-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download