919439028ea11e18e11d0e2a58e7c32e4f1a2c0fa769be638085e955cf260f39

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2024, 04:23

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General

Target

2024-05-24_18da331e2d3bb209c53fe606b74584d6_cryptolocker.exe
Size

96KB
MD5

18da331e2d3bb209c53fe606b74584d6
SHA1

f1193dba4d7bf8db3b703a1e5074d4b9613d26fa
SHA256

919439028ea11e18e11d0e2a58e7c32e4f1a2c0fa769be638085e955cf260f39
SHA512

288df3aa7abc142121ca2b1b6a5a6f93b73e8f31ce51d2d0aba1260bb13b9a53d7dc07a5cefba479d9e6b0602023daabe370b79ac0b40cae04ed8fc4ffdb69c6
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgph:V6a+pOtEvwDpjtze

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233dd-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233dd-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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-05-24_18da331e2d3bb209c53fe606b74584d6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3252	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 2456 wrote to memory of 3252	2456	2024-05-24_18da331e2d3bb209c53fe606b74584d6_cryptolocker.exe	83
PID 2456 wrote to memory of 3252	2456	2024-05-24_18da331e2d3bb209c53fe606b74584d6_cryptolocker.exe	83
PID 2456 wrote to memory of 3252	2456	2024-05-24_18da331e2d3bb209c53fe606b74584d6_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-24_18da331e2d3bb209c53fe606b74584d6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_18da331e2d3bb209c53fe606b74584d6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3252

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
96KB

MD5
20ccaf91f6c00674c489a9c4963c2ec0

SHA1
899516033226271124a8d67d4e5a1061a16b0d87

SHA256
07dc8312d9939d6577fe757140a777b69bf001a41c2a8f96d2e4c2c6672d8661

SHA512
17180f9fbac4faa5d987aa8a0ed3006ad600566855046a8b9d2e2461088b75a8577254665b40c590a8985caefdc55dd06a1f2d522ec0b6dc79c90da66200a54c

Download Submit
memory/2456-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2456-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2456-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3252-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3252-23-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download