7bf11240e354ae0f5bd728145031adf26285800071aec8274df1f4c8fe9910e7

Analysis

max time kernel
144s
max time network
148s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
28/04/2024, 05:23

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General

Target

2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe
Size

41KB
MD5

056d073f5a9609291cc162e1cab74478
SHA1

a125d97c3b26acabb553c3694a50ff30061518f0
SHA256

7bf11240e354ae0f5bd728145031adf26285800071aec8274df1f4c8fe9910e7
SHA512

672046a09e8f489b025753ef0f0387e2ff26cafdd1b2f2311029fdee7e79e6cab51ef9db8d95006932094d54614a28faf2a02d1ef4b11ba94d0722c5860314b3
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAg:bCDOw9aMDooc+vAg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1576-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c0000000122ee-11.dat	CryptoLocker_rule2
behavioral1/memory/1576-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2612-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2612-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2612	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1576	2024-04-28_056d073f5a9609291cc162e1cab74478_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 1576 wrote to memory of 2612	1576	2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe	28
PID 1576 wrote to memory of 2612	1576	2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe	28
PID 1576 wrote to memory of 2612	1576	2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe	28
PID 1576 wrote to memory of 2612	1576	2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_056d073f5a9609291cc162e1cab74478_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2612

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
fe88f0c03094f17170bb4bf071532f95

SHA1
aba01f3c4cf8ebee8b099a7fb136c15123179eb2

SHA256
b6a5b8945b26cf86527bef6e4ad7fe12356a58938bf8691fc618a3104e3a8921

SHA512
142b28f349a542e94321652de5bb5640de72ee8c09cbaa487766e0c84172d30975cf255a29bb7362ed2e7e041a393e771e2aaa1cc377e0f50f533218dd753220

Download Submit
memory/1576-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1576-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1576-2-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1576-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1576-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2612-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2612-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2612-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download