ffdfbce27dc698f9ae5a22c90ba9b00da626dc3006f5425588b3d4faf819988b

Analysis

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

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
18/04/2024, 10:37

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General

Target

2024-04-18_8e3eaed9c8841abbe02801e6d8d7006c_cryptolocker.exe
Size

41KB
MD5

8e3eaed9c8841abbe02801e6d8d7006c
SHA1

f0e716dffe243ed5ff3e7dd2f94505a33e72f100
SHA256

ffdfbce27dc698f9ae5a22c90ba9b00da626dc3006f5425588b3d4faf819988b
SHA512

775cca79b9247810ab2637d898dd28e4bd2f18679a396f562e27bd8dea8f51901f6352abd984cd8d56f4bf513e00d8058a7d0ea1770850883597a538e03a4418
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAHz:bCDOw9aMDooc+vAT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/3068-1-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012339-11.dat	CryptoLocker_rule2
behavioral1/memory/3044-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3068-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3068-12-0x0000000002250000-0x000000000225A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3044-27-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3044	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
3068	2024-04-18_8e3eaed9c8841abbe02801e6d8d7006c_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 3068 wrote to memory of 3044	3068	2024-04-18_8e3eaed9c8841abbe02801e6d8d7006c_cryptolocker.exe	28
PID 3068 wrote to memory of 3044	3068	2024-04-18_8e3eaed9c8841abbe02801e6d8d7006c_cryptolocker.exe	28
PID 3068 wrote to memory of 3044	3068	2024-04-18_8e3eaed9c8841abbe02801e6d8d7006c_cryptolocker.exe	28
PID 3068 wrote to memory of 3044	3068	2024-04-18_8e3eaed9c8841abbe02801e6d8d7006c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-18_8e3eaed9c8841abbe02801e6d8d7006c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_8e3eaed9c8841abbe02801e6d8d7006c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3068
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3044

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\lossy.exe

Filesize
41KB

MD5
78b17102565d73239c0133ff77b32cf4

SHA1
cfd9d435c3e9bfa2e2b3d7ac01a8fa0fbbfe719e

SHA256
a0849ab7048caaf57a6480f6fc75db529a2c1c6c56ab2be74e92cf739054ae60

SHA512
4b1ecbb1bc8b26471a81e74de03d6fd196c8d1d56646610da80e63d5f95e0ee46018f65185c86bc9b40ff338071a8ffda8595035f39ddfdfa790073c7db0704d

Download Submit
memory/3044-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3044-19-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/3044-24-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/3044-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3068-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3068-1-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3068-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3068-3-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/3068-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3068-12-0x0000000002250000-0x000000000225A000-memory.dmp

Filesize
40KB

Download