ee5f5c74359dbce567929b649fc36ffe45eb4b7f53df2f3be655adf4bdfe7271

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/04/2024, 09:36

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General

Target

2024-04-06_4aa5bc9663ad4a78356bc4c7d560979a_cryptolocker.exe
Size

63KB
MD5

4aa5bc9663ad4a78356bc4c7d560979a
SHA1

741daf5475b2f071e4fc606a385a892be092b58d
SHA256

ee5f5c74359dbce567929b649fc36ffe45eb4b7f53df2f3be655adf4bdfe7271
SHA512

d316c8ee0a6b6b3c656e372816fc5d07cfa8be68af03628622a25228b0b6c7bd0788a955939ffa68507e7d5fa6a2f8357897c46be032b6e5a0caa70a83e66fa8
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xblzowe:X6a+SOtEvwDpjBrOa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023226-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023226-12.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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-04-06_4aa5bc9663ad4a78356bc4c7d560979a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3016	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 5020 wrote to memory of 3016	5020	2024-04-06_4aa5bc9663ad4a78356bc4c7d560979a_cryptolocker.exe	88
PID 5020 wrote to memory of 3016	5020	2024-04-06_4aa5bc9663ad4a78356bc4c7d560979a_cryptolocker.exe	88
PID 5020 wrote to memory of 3016	5020	2024-04-06_4aa5bc9663ad4a78356bc4c7d560979a_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-06_4aa5bc9663ad4a78356bc4c7d560979a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-06_4aa5bc9663ad4a78356bc4c7d560979a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5020
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3016

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
63KB

MD5
b2f82e4fe7b1f195ba6f8dfae555ebf6

SHA1
ba65128d3f628d497153b16166936dc259d764e8

SHA256
26125ae9078567ed49499841f80645fcab245a9bbfd9ad9f3b4cf3b206913c2f

SHA512
cd69fec8f3342475b4b27ddea1a3b7baffc95dca87d78992daaca2d0ca95fb948787a5608721bf6a1d16021f539b21b4c453d541fc88ff2593c2814e27df0c82

Download Submit
memory/3016-18-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3016-17-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/5020-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/5020-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/5020-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download