41a73cc53068c71d72628fa7e0c2089fb3607d76c962ac6e0ff9fa096aede9d2

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04/04/2024, 19:47

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General

Target

2024-04-04_258f32c644e8773ed7740e8d0f21291a_cryptolocker.exe
Size

44KB
MD5

258f32c644e8773ed7740e8d0f21291a
SHA1

3cec60183228beb04f65c64878441733c38deecf
SHA256

41a73cc53068c71d72628fa7e0c2089fb3607d76c962ac6e0ff9fa096aede9d2
SHA512

577f496ab8bb72bcf0bdbae9e5f9cb3a9ceceee9f4068b2d22f6e106a0656a15a2ed42db535784bcede1eaef3ed5dbda1e59ffaeac64f6d309aacc4bd2098c6f
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+syQNA3:bgGYcA/53GADw8Cl/n3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224d-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
312	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1796	2024-04-04_258f32c644e8773ed7740e8d0f21291a_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 1796 wrote to memory of 312	1796	2024-04-04_258f32c644e8773ed7740e8d0f21291a_cryptolocker.exe	28
PID 1796 wrote to memory of 312	1796	2024-04-04_258f32c644e8773ed7740e8d0f21291a_cryptolocker.exe	28
PID 1796 wrote to memory of 312	1796	2024-04-04_258f32c644e8773ed7740e8d0f21291a_cryptolocker.exe	28
PID 1796 wrote to memory of 312	1796	2024-04-04_258f32c644e8773ed7740e8d0f21291a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-04_258f32c644e8773ed7740e8d0f21291a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-04_258f32c644e8773ed7740e8d0f21291a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1796
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:312

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\hasfj.exe

Filesize
44KB

MD5
61b51fc98ed49efbb72beb316b253180

SHA1
93950a39c1cb70107be477cbd0c3bb46a1212c56

SHA256
def44a1c2521cd99cbd412d30fd98e23591530f1671af546958d7410d1c34b21

SHA512
43842c59a948753fcb62c788e17bc6768b001abbbcaa6dcc2dd6a17abb2f3b001a8ab7d1bac39b82ef4fd2c10cd28d5a7785c32a0b497116ba29525c7e03b6ad

Download Submit
memory/312-15-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/312-22-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1796-0-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download
memory/1796-1-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

Filesize
24KB

Download
memory/1796-8-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download