486ec164136480deeadd75f9437f060ec68872766fed920206eea961a1c76a78

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 03:32

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General

Target

2024-02-23_7151393f6d2756c26c9f8ededa3ba2bf_cryptolocker.exe
Size

51KB
MD5

7151393f6d2756c26c9f8ededa3ba2bf
SHA1

6273db3f6723f4f055eb070d77edd3d6c363ebf8
SHA256

486ec164136480deeadd75f9437f060ec68872766fed920206eea961a1c76a78
SHA512

fcf2802557d66f8450eec66903df9a6c4f75676462a5fa2f3c8a21fb2546b131d9ca46511649a93ff507c8b480e7858cad079232d581991057ac771e14d66c6f
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9Xv+aGzQ9t:bIDOw9a0DwitDZzclqQ9t

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023225-12.dat	CryptoLocker_rule2

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-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation	2024-02-23_7151393f6d2756c26c9f8ededa3ba2bf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4812	lossy.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 3252 wrote to memory of 4812	3252	2024-02-23_7151393f6d2756c26c9f8ededa3ba2bf_cryptolocker.exe	87
PID 3252 wrote to memory of 4812	3252	2024-02-23_7151393f6d2756c26c9f8ededa3ba2bf_cryptolocker.exe	87
PID 3252 wrote to memory of 4812	3252	2024-02-23_7151393f6d2756c26c9f8ededa3ba2bf_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-23_7151393f6d2756c26c9f8ededa3ba2bf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_7151393f6d2756c26c9f8ededa3ba2bf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3252
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4812

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\lossy.exe

Filesize
52KB

MD5
67af34719850ea6af886194c2bbcc6e4

SHA1
97113c55e2cc5975a0e08d0289b0772cd97c2a49

SHA256
c681a2becc7005f019ce2685ec39a4b0f9a53c451f2d79b36f7c00a514a896c3

SHA512
2589c9d0e2df50658590f4dbb76a6ea5b01a13d7e520b35da8e72ab92715814d20170d36a5017fa2c1f8872b182a2e2372e67c1f567a3e89199e7a7d18d9943c

Download Submit
memory/3252-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3252-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3252-2-0x0000000000500000-0x0000000000506000-memory.dmp

Filesize
24KB

Download
memory/4812-18-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/4812-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download