79da46a5d8597eef1b46b70b2000e4330c6a5a50bade71e8e4ee75f64454a8f8

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
26/05/2024, 00:24

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General

Target

2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe
Size

44KB
MD5

5d823dd093c392e8a621f92859b795bd
SHA1

1b3f79d485f26a5d10d0358a286692788820995e
SHA256

79da46a5d8597eef1b46b70b2000e4330c6a5a50bade71e8e4ee75f64454a8f8
SHA512

2dc177b7b8d9fa38f2a46bcfef2ecf187fb665cf2cf82aff0c054c8c18fc6c2625fef573c0540cf9f318a1f37a5eb9f61cec13b1ce84ac0f48521f8f525a6841
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIDk:bm74zYcgT/Ekn0ryfjvk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2980-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001227b-11.dat	CryptoLocker_rule2
behavioral1/memory/2980-14-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1920-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1920-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1920	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2980	2024-05-26_5d823dd093c392e8a621f92859b795bd_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 2980 wrote to memory of 1920	2980	2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe	28
PID 2980 wrote to memory of 1920	2980	2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe	28
PID 2980 wrote to memory of 1920	2980	2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe	28
PID 2980 wrote to memory of 1920	2980	2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_5d823dd093c392e8a621f92859b795bd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2980
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1920

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
45KB

MD5
538a79fdf25f1ea87af9015f2c3de8db

SHA1
7b964253672ce161eacad5b1463914d90c084aab

SHA256
2e174c46be27643f0c237dffc1f3e4bdfead9156a00a42beeeb362a53ef9ac97

SHA512
10563e68c7eb501aef8b081c60969cfca0261784f45b4fe6dc475dadcc97b5b1e07273800aa943fcd92b776b169b73a4be49c8b1241abc2829aa4ec77c3a7492

Download Submit
memory/1920-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1920-25-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1920-18-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

Filesize
24KB

Download
memory/1920-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2980-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2980-1-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2980-2-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2980-9-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2980-14-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download