89209d331c349e10338f7a88dd740a3c34802a207142767ea00f89923aa641de

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2024 20:34

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General

Target

2024-02-19_76eee029cc29b2801f2e182210f865b0_cryptolocker.exe
Size

82KB
MD5

76eee029cc29b2801f2e182210f865b0
SHA1

8ed33a6b78f5dbd4a64b7294ca6f9242a0edb49b
SHA256

89209d331c349e10338f7a88dd740a3c34802a207142767ea00f89923aa641de
SHA512

924463b1e3244fa107cd835c091bec623b17fcb8ce2c7166faf232fa92acdbdc07b25ba3bfeb9b21f7837659a524524c729a312a3b1c668bb97683086f5dae97
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNlVSLJ:V6a+pOtEvwDpjvpU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231cc-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231cc-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-19_76eee029cc29b2801f2e182210f865b0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2384	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 4460 wrote to memory of 2384	4460	2024-02-19_76eee029cc29b2801f2e182210f865b0_cryptolocker.exe	85
PID 4460 wrote to memory of 2384	4460	2024-02-19_76eee029cc29b2801f2e182210f865b0_cryptolocker.exe	85
PID 4460 wrote to memory of 2384	4460	2024-02-19_76eee029cc29b2801f2e182210f865b0_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-19_76eee029cc29b2801f2e182210f865b0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_76eee029cc29b2801f2e182210f865b0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4460
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2384

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
82KB

MD5
5f26e0c36f6e39109e5c7c2d6a63c999

SHA1
cc94ea3316ab4b90f2960c207b9a56194f09272c

SHA256
4e298fa96c54430984a03fe21e87e1f44d9d80e18e299e798813a6c65586209e

SHA512
7802cce679bed4fefe979255ae68e56d2197cd696b27c498c45346b314f13e1564e265eab3f1ef0b7ccc7492d0a7905a50fcc71f2285d18e6bb00e33ce609b90

Download Submit
memory/2384-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2384-19-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4460-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4460-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4460-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download