0b4ce3786d7d9f20959dbf6fe829f381577cd1bccebfb6ec388dc281d9781939

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/05/2024, 12:57

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General

Target

2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe
Size

41KB
MD5

e0d511f7fd9f70d49c795034cde00e98
SHA1

48f85cd4ac4449173b7e9039563c6f65fbd03109
SHA256

0b4ce3786d7d9f20959dbf6fe829f381577cd1bccebfb6ec388dc281d9781939
SHA512

6801785d99bbaa2c96aa60389e664326cf4ad9a0afb9aea1f5d790ca5261cde3ed933f99ea00d1b2a424503c8ce0a946a9009b4065c20c754f9d7b278556d450
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAn7n:bCDOw9aMDooc+vA7n

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2736-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2736-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000144e4-14.dat	CryptoLocker_rule2
behavioral1/memory/2328-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2328	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2736	2024-05-24_e0d511f7fd9f70d49c795034cde00e98_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 2736 wrote to memory of 2328	2736	2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe	28
PID 2736 wrote to memory of 2328	2736	2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe	28
PID 2736 wrote to memory of 2328	2736	2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe	28
PID 2736 wrote to memory of 2328	2736	2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_e0d511f7fd9f70d49c795034cde00e98_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2328

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\lossy.exe

Filesize
41KB

MD5
33bc75e6f9d1339a9a05e188abe6b8b4

SHA1
89565b8096b88be9a71ea9eb90b4c78aa1323b7a

SHA256
b4a5319a50341ba428ed3c07892a72b46d85fafb3cbe0f7034ecf594aa025269

SHA512
cd8396e25aa76931e5fc94ff75211cc15cc4558051ed4176289759be5aa3a93a7d6405c7064b9a1817e6b7aed73a7d79268e0a786a16ee3d6eb38de9d45e328e

Download Submit
memory/2328-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2328-17-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2328-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2736-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2736-2-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/2736-1-0x0000000001C50000-0x0000000001C56000-memory.dmp

Filesize
24KB

Download
memory/2736-9-0x0000000001C50000-0x0000000001C56000-memory.dmp

Filesize
24KB

Download
memory/2736-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download