c6e8a07f1b0581c238d278c96fbcd4bd94365518644a4e62ce2528fc64fb126d

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
04-05-2024 04:38

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General

Target

2024-05-04_59a69d3cdc90dda2a0468d1325bbe011_cryptolocker.exe
Size

31KB
MD5

59a69d3cdc90dda2a0468d1325bbe011
SHA1

16dd23650a1bce18532360a6b4992dca0fd6d4dd
SHA256

c6e8a07f1b0581c238d278c96fbcd4bd94365518644a4e62ce2528fc64fb126d
SHA512

f93b80aeebfb99372ce1dde079ff6eabe2c3265453da9921636555376f0f82ca62da7156a3ab28cb67f900055a4bedf10eb836d11d07dd5b9bbba5eb6ead975b
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXvf:bG74zYcgT/Ekd0ryfjkf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/964-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b000000023b93-13.dat	CryptoLocker_rule2
behavioral2/memory/3992-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/964-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3992-27-0x0000000008000000-0x000000000800A000-memory.dmp	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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-05-04_59a69d3cdc90dda2a0468d1325bbe011_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3992	hasfj.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 964 wrote to memory of 3992	964	2024-05-04_59a69d3cdc90dda2a0468d1325bbe011_cryptolocker.exe	85
PID 964 wrote to memory of 3992	964	2024-05-04_59a69d3cdc90dda2a0468d1325bbe011_cryptolocker.exe	85
PID 964 wrote to memory of 3992	964	2024-05-04_59a69d3cdc90dda2a0468d1325bbe011_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-04_59a69d3cdc90dda2a0468d1325bbe011_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_59a69d3cdc90dda2a0468d1325bbe011_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:964
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3992

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\hasfj.exe

Filesize
31KB

MD5
c9df4fa1bfa9b2abe250244a84aaf0f4

SHA1
0b80283841147bba79e6fb1cc7077b0bd1ec44e7

SHA256
5bd21546a7811e4c181cd4af0bf1148b2e3a19509e807a8e42c5c756b3750a26

SHA512
68982d122f20ee2754f000c22e84887e6b3315f37847bcf4f44c16b1e1f9d382ceef8932df58fcabcc9351582726518e2dba920198f947ab6aa664e8bfb30446

Download Submit
memory/964-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/964-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/964-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/964-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/964-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3992-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3992-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3992-26-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3992-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download