0da959b54501996e301c987df30231a606047dc0cc095ef03278c05881818338

Resubmissions

23/02/2024, 19:57

240223-ypklkaga77 7

23/02/2024, 19:50

240223-ykqa9agh4t 10

Analysis

max time kernel
116s
max time network
157s
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, 19:50

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General

Target

2024-02-23_89fa18b6e0de0b0613263a7f7c2552b5_cryptolocker.exe
Size

47KB
MD5

89fa18b6e0de0b0613263a7f7c2552b5
SHA1

18cd8f6931f61c74b3bc8fae886e2ffaa8f99af3
SHA256

0da959b54501996e301c987df30231a606047dc0cc095ef03278c05881818338
SHA512

22322d7651b5f3d2c4120bf23baf9d7fdb9ce0d2e459e8e2b4d1b8f2dc256f25cfec4717b3fff5e69e95a6177504fe67ccb2be9dab724b2986cf6d43b433b1ff
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIDaI:bgGYcA/53GAA6y37Q6dIV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000230ed-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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-23_89fa18b6e0de0b0613263a7f7c2552b5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
404	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 4432 wrote to memory of 404	4432	2024-02-23_89fa18b6e0de0b0613263a7f7c2552b5_cryptolocker.exe	88
PID 4432 wrote to memory of 404	4432	2024-02-23_89fa18b6e0de0b0613263a7f7c2552b5_cryptolocker.exe	88
PID 4432 wrote to memory of 404	4432	2024-02-23_89fa18b6e0de0b0613263a7f7c2552b5_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-23_89fa18b6e0de0b0613263a7f7c2552b5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_89fa18b6e0de0b0613263a7f7c2552b5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4432
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:404

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
47KB

MD5
3b1885bc6186ba2aeb7df6a8900362af

SHA1
631ea468376659cd6dfbd3e4a5abeb776aff90db

SHA256
2d3b77d730a3d4cb1f08e0bc35039589fa1affc9ed26c54786a335c7d3f0a0be

SHA512
a5cb3383c86fe7308ba1ec188d0328cc60d11d651be3da98a71231db11d92c66ff6797b5702013a266c66b074a5bbf0f570b9e63fc8a131aee27321d7e20dc85

Download Submit
memory/404-18-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/404-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4432-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4432-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4432-2-0x0000000002400000-0x0000000002406000-memory.dmp

Filesize
24KB

Download