fb83e36620db25622b3857e02835b4e0dba491e7236bda36c9c29f9488b62f4d

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 11:28

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General

Target

2024-02-28_21472ec736dd2470a3db026eb702ea86_cryptolocker.exe
Size

127KB
MD5

21472ec736dd2470a3db026eb702ea86
SHA1

fca4fd6ec21d2073a473a93b35554cb30d74e174
SHA256

fb83e36620db25622b3857e02835b4e0dba491e7236bda36c9c29f9488b62f4d
SHA512

f027645e4d5d4511c9e7ebd237cef36b012fc1e5316310f45b725b45a04127bc9af626db532abeb47c2a7942cb882b832e4e5ba45527c1d8ffd21961960bf403
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//fRU:vCjsIOtEvwDpj5H9YvQd2RU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231ff-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231ff-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-02-28_21472ec736dd2470a3db026eb702ea86_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2316	misid.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 4780 wrote to memory of 2316	4780	2024-02-28_21472ec736dd2470a3db026eb702ea86_cryptolocker.exe	89
PID 4780 wrote to memory of 2316	4780	2024-02-28_21472ec736dd2470a3db026eb702ea86_cryptolocker.exe	89
PID 4780 wrote to memory of 2316	4780	2024-02-28_21472ec736dd2470a3db026eb702ea86_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-28_21472ec736dd2470a3db026eb702ea86_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_21472ec736dd2470a3db026eb702ea86_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4780
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2316

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\misid.exe

Filesize
127KB

MD5
9254d3d2f857a6922c0de46aad87b23e

SHA1
d09fdbd9d4d3d774c6248cd133401d7a8eebe013

SHA256
0541b498c5bda34cad31e657c0aef1ccda0eaf324d8d8d586a7f60d6ee0eb44f

SHA512
ac845bf39dc669174e68c952491b5668fa918a04f9b8ed84869ab9b8ad9a20481f43e729e854ae96597ce75cc403b70f7fd499bfc0b86beb6e0198145a4c030d

Download Submit
memory/2316-17-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2316-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4780-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4780-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4780-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download