700b4699f2eeff41d7fa3a96499996b7512e2f31a24763376921222126abad24

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 23:15

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General

Target

2024-01-18_b4e7e029e4eaf6f474e4f0492a496836_cryptolocker.exe
Size

57KB
MD5

b4e7e029e4eaf6f474e4f0492a496836
SHA1

b715467a080fa6793d0a5e4413aadb49df7a9b31
SHA256

700b4699f2eeff41d7fa3a96499996b7512e2f31a24763376921222126abad24
SHA512

3ec8bca34a11192e176a6993603378755e42ea449b803340077e5ec5e4aac5b5523d7587e1d551864af3ad1cb6bc98ec48481046990307fe321c60949e079f38
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPt547/Gf6:V6QFElP6n+gMQMOtEvwDpjyaLccVCbm6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e630-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e630-12.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	2024-01-18_b4e7e029e4eaf6f474e4f0492a496836_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4684	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 2888 wrote to memory of 4684	2888	2024-01-18_b4e7e029e4eaf6f474e4f0492a496836_cryptolocker.exe	87
PID 2888 wrote to memory of 4684	2888	2024-01-18_b4e7e029e4eaf6f474e4f0492a496836_cryptolocker.exe	87
PID 2888 wrote to memory of 4684	2888	2024-01-18_b4e7e029e4eaf6f474e4f0492a496836_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-18_b4e7e029e4eaf6f474e4f0492a496836_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_b4e7e029e4eaf6f474e4f0492a496836_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4684

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
57KB

MD5
6c94cd9caa63fb29b36f765b57616765

SHA1
3311e239655e86e29aac85a2ea1d9c0409f04e74

SHA256
50f4e7a6f6184f916ad63453decf8ceb8bda2eec8e94b5a16bbfa186d313909f

SHA512
f883df794262c12c8a7a18b5a6086991c905ff8019acfa9552cffa5daa02b6c7400667bb053116400aa7e487c8dbd0a454ecef607ca074e7589ca5b5fc87a7c0

Download Submit
memory/2888-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2888-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2888-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4684-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4684-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download