075946e6897a9c1a31e4caa7ff1c5f2b0c6fa3bd7ec50c167bc8d526deadda8d

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 02:26

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General

Target

2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe
Size

41KB
MD5

0e7afbb0f0f5ac291c89a8b37b34ee5a
SHA1

53ccaac2a49e8b4259d4ddbfa7fcc65d98ab81be
SHA256

075946e6897a9c1a31e4caa7ff1c5f2b0c6fa3bd7ec50c167bc8d526deadda8d
SHA512

077068b4c6616b411e5b16a3bc91ccdfabb5f37140417c9fabcb06859c7cef84fdbb521cd4d73fd79175e319157bf850824bfd4a7d5f6ed04c58050fa925b4e4
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCyD/95i:X6QFElP6n+gJQMOtEvwDpjBsYK/fbDFI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000015d31-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000015d31-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2380	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2040	2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_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 2040 wrote to memory of 2380	2040	2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe	28
PID 2040 wrote to memory of 2380	2040	2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe	28
PID 2040 wrote to memory of 2380	2040	2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe	28
PID 2040 wrote to memory of 2380	2040	2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_0e7afbb0f0f5ac291c89a8b37b34ee5a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2380

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\asih.exe

Filesize
42KB

MD5
baf25c02fff7714797893cbd209fdd4c

SHA1
62c38b5c3efc25e514eca3b4d0a157617b4f7e60

SHA256
3bd4b2fe1392f8f7cb67babd43b5b14109deab947e9916f0bad1835e1ab532c1

SHA512
0122c0958ef692c3016042b5a6f33320a870187b12471515f90a72f2a7ad36a751cbd7da4da54b4977f58713344074fcc3ce1f4d3f4755dfd4c427bd20764e81

Download Submit
memory/2040-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2040-1-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2040-8-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2380-15-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2380-16-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download