4ef2ba74836f335e1d413a404cbe13c2af6672c41da10f9c5405f96f15a1f742

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/02/2024, 07:38 UTC

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General

Target

2024-02-29_859fdc590b0cd7f2b57562f546840084_cryptolocker.exe
Size

32KB
MD5

859fdc590b0cd7f2b57562f546840084
SHA1

4c45f8c3eb757e058de68b86f023d71fd9532773
SHA256

4ef2ba74836f335e1d413a404cbe13c2af6672c41da10f9c5405f96f15a1f742
SHA512

d2fd537da1debf7d7287445c03d564605f522814491d952d32b4d9d2afd9dfb2bd0c488ebc32e424ef3b7a647073897cd8af90d2d0049fc44046f2e16efc5862
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUr766SJ/Tl+bltoGk6WdsZR:bA74zYcgT/Ekd0ryfjQRSlwltYU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x00070000000120e4-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2860	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2872	2024-02-29_859fdc590b0cd7f2b57562f546840084_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2860	2872	2024-02-29_859fdc590b0cd7f2b57562f546840084_cryptolocker.exe	28
PID 2872 wrote to memory of 2860	2872	2024-02-29_859fdc590b0cd7f2b57562f546840084_cryptolocker.exe	28
PID 2872 wrote to memory of 2860	2872	2024-02-29_859fdc590b0cd7f2b57562f546840084_cryptolocker.exe	28
PID 2872 wrote to memory of 2860	2872	2024-02-29_859fdc590b0cd7f2b57562f546840084_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-29_859fdc590b0cd7f2b57562f546840084_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_859fdc590b0cd7f2b57562f546840084_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2860

Network

DNS

mytarta.com

hasfj.exe

Remote address:

8.8.8.8:53

Request

mytarta.com

IN A

Response

No results found

8.8.8.8:53

mytarta.com

dns

hasfj.exe

57 B
107 B
1
1

DNS Request

mytarta.com

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
32KB

MD5
9f4dd1af68f195625ad69c4ceffdd19a

SHA1
2fb51ebb03488fb591ff374aa6d9968bf9ac36f7

SHA256
262c146dd0486b0f2f961ba727016c693a12a8aa0c2ba42e930628be78a11176

SHA512
3f8dbd774eadc9181f538ad77b95edcbfb105131c161085e44c96c1c217c3e58123b83b97d98bb847b53d667c065c36f6b1ea259d031d366730b4725bb8ae72b

Download Submit
memory/2860-15-0x0000000001BC0000-0x0000000001BC6000-memory.dmp

Filesize
24KB

Download
memory/2860-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2872-0-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2872-3-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2872-1-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download