58225887b0232d1f7fe81fe08f791d15acc6bd9f93352d4f2052500700a01598

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13/05/2024, 19:34

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General

Target

2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe
Size

44KB
MD5

622ce6eaaaef1052095a19d9259e7a77
SHA1

bacb0cfca2079fcf9a4221837875bd7aff90177f
SHA256

58225887b0232d1f7fe81fe08f791d15acc6bd9f93352d4f2052500700a01598
SHA512

e7c2dc6e361fa9fd1c95db7a6eccef26d138079e2f84f884897e41d199d50eafd8e20cab1acaabb4f20ea34e2cce48b4d927fa34643d89d8c8850a057d6340b6
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUpEui0U3o:bm74zYcgT/Ekn0ryfjLuH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2968-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d0000000139d9-11.dat	CryptoLocker_rule2
behavioral1/memory/2968-15-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2564-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2564-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2564	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2968	2024-05-13_622ce6eaaaef1052095a19d9259e7a77_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 2968 wrote to memory of 2564	2968	2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe	28
PID 2968 wrote to memory of 2564	2968	2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe	28
PID 2968 wrote to memory of 2564	2968	2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe	28
PID 2968 wrote to memory of 2564	2968	2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2564

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
3b4caa357302539514a8e9e665b2a669

SHA1
30c5efb5f1fcef922d7fb4ee53400b438d43e308

SHA256
26c53674eda38f0a6629002183a878a44b991449bd4ef419eccba090d03182f1

SHA512
9666db6c03ec2f0894c9218c8ba39cb4ecf4bd62a9e837649a61df91f49e70ce5e1243ee9e9226b4f81962984b086721bc1b530a79599783712fdda2ddec49e2

Download Submit
memory/2564-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2564-18-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2564-25-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2564-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2968-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2968-1-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2968-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2968-9-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2968-15-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download