0fd4ba050d6c8d3c2f639dd34f5202319beb1674bc7a61c9f800b86c1524ea0b

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
03/06/2024, 00:23

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General

Target

2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe
Size

43KB
MD5

066d2640bb06f47de340535ba2b4c769
SHA1

d08c1ff3d974734fc1d77e5cf54f3cabae3b15d9
SHA256

0fd4ba050d6c8d3c2f639dd34f5202319beb1674bc7a61c9f800b86c1524ea0b
SHA512

a26fe6405f9fcf4e1962522c13d00d077532a64ecc99b87360a0594bcd79e6ad7f494394b4a70def79bb9685fbcaca6117bd2ca145cbb955cd179d80fcc38ad6
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqtU:bCDOw9aMDooc+vAqtU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1300-8-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000120ff-11.dat	CryptoLocker_rule2
behavioral1/memory/1300-14-0x0000000002390000-0x000000000239A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3068-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3068	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1300	2024-06-03_066d2640bb06f47de340535ba2b4c769_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 1300 wrote to memory of 3068	1300	2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe	28
PID 1300 wrote to memory of 3068	1300	2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe	28
PID 1300 wrote to memory of 3068	1300	2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe	28
PID 1300 wrote to memory of 3068	1300	2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1300
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3068

Network

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\lossy.exe

Filesize
43KB

MD5
5e5eb0b3af94fdb5099ee6e855f569df

SHA1
5ec3c839bfe6ba08199504e85eeb7e7cb60342cf

SHA256
c9de61345b4ead771815e93f4131f9fbdf24a72b657458370880e527efcf80fa

SHA512
c22778d98eb911db3821ef57f8486f1018193b5e36eea3374dc74ad8e94f131597a0675cdf3953fedbbe612640a4a6c3c3044cf86f173ef493139ebe1aeae534

Download Submit
memory/1300-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1300-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1300-8-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1300-1-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1300-14-0x0000000002390000-0x000000000239A000-memory.dmp

Filesize
40KB

Download
memory/1300-25-0x0000000002390000-0x000000000239A000-memory.dmp

Filesize
40KB

Download
memory/3068-17-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/3068-24-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3068-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download