dc170668f64133df89f372c24bc963512bdb359b38d38c5ccdcb1353fa55a5b3

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/04/2024, 21:28

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General

Target

2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe
Size

388KB
MD5

531e145259c2be8394edd41d386991c4
SHA1

b961cc4e32baa3464457df4e6f25e81a0b219e39
SHA256

dc170668f64133df89f372c24bc963512bdb359b38d38c5ccdcb1353fa55a5b3
SHA512

259ea19b94e115fe0a83cde9955408ef60c04c1be6432f7747376e048e7aadca79d7a36018cc5b518cd151f2d788bae8a1f0dc987c229ed0d717bfd18867a44e
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXR:nnOflT/ZFIjBz3xjTxynGUOUhXR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224f-13.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2788	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2020	2024-04-05_531e145259c2be8394edd41d386991c4_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 2020 wrote to memory of 2788	2020	2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe	28
PID 2020 wrote to memory of 2788	2020	2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe	28
PID 2020 wrote to memory of 2788	2020	2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe	28
PID 2020 wrote to memory of 2788	2020	2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_531e145259c2be8394edd41d386991c4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2788

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

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

Filesize
389KB

MD5
57dce518b0cf8857ec13179f0ef1b82a

SHA1
acecd76922d6621bd6da122209c9adee64143fa3

SHA256
9d8c7f68efa7a7c98513c49654f29a5d2c25a7c5a7ca0c0d293ee79a7426939c

SHA512
1079fab04755c30fa5f9fab2cedb5d938c103ec440849a7fe8b1235a9a657552f79800ae43033b0ff2f4a3e47a89ce930323cba97c7f300c9627758392f725a0

Download Submit
memory/2020-0-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2020-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2020-7-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2788-16-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2788-15-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download