4d3d4a772d2dc84d8cda6ac4cd8e3f8c823798e4043693bc318b02b1c1abbca8

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
16-04-2024 07:36

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General

Target

2024-04-16_7e6f54ac18dced5c94b66a6bad917ad2_cryptolocker.exe
Size

30KB
MD5

7e6f54ac18dced5c94b66a6bad917ad2
SHA1

491354bca30b7a577c3d119f796b34b124cad81a
SHA256

4d3d4a772d2dc84d8cda6ac4cd8e3f8c823798e4043693bc318b02b1c1abbca8
SHA512

a0185de3b13192bca1c8d7b73b5a4ee633f9588d2728fba0f933e44fb917bf956fad6ac92b1b5ae9cd84280a7c46b01f19f7fef6410cceb8c20d20e3392256e1
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUg4:bG74zYcgT/Ekd0ryfjs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2040-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012253-11.dat	CryptoLocker_rule2
behavioral1/memory/2040-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2520-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2040-13-0x0000000001E60000-0x0000000001E6A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2520-27-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2520	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2040	2024-04-16_7e6f54ac18dced5c94b66a6bad917ad2_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 2520	2040	2024-04-16_7e6f54ac18dced5c94b66a6bad917ad2_cryptolocker.exe	28
PID 2040 wrote to memory of 2520	2040	2024-04-16_7e6f54ac18dced5c94b66a6bad917ad2_cryptolocker.exe	28
PID 2040 wrote to memory of 2520	2040	2024-04-16_7e6f54ac18dced5c94b66a6bad917ad2_cryptolocker.exe	28
PID 2040 wrote to memory of 2520	2040	2024-04-16_7e6f54ac18dced5c94b66a6bad917ad2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-16_7e6f54ac18dced5c94b66a6bad917ad2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-16_7e6f54ac18dced5c94b66a6bad917ad2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2520

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
30KB

MD5
b537d6970fe9aa43a5019e6392b63ec8

SHA1
059fc39dcd873fdc3778b20946d067287a024605

SHA256
3945d9c4d0884032e3c30c902989592af2b04ab499d43205323c79958a7c6b42

SHA512
5c6e520878055729ee951e0d00953fc9bdcd6d5fc9e4c3c4dd3ce807268cb4f93bfd8331b6488998206a584fd5faabed4173cb7a6527819aad456d4875ae5f6a

Download Submit
memory/2040-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2040-1-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/2040-3-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/2040-2-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/2040-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2040-13-0x0000000001E60000-0x0000000001E6A000-memory.dmp

Filesize
40KB

Download
memory/2520-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2520-19-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2520-21-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2520-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download