7e55c3da8e88198f05b9d2696a3cac064498f97ce2bd57dee9f8ecca477f1acc

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
03-06-2024 03:33

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General

Target

2024-06-03_359810d2c8d40412b90848bbb50f95c3_cryptolocker.exe
Size

44KB
MD5

359810d2c8d40412b90848bbb50f95c3
SHA1

a62a4a99b1bd8688f1cbfc183ea97109dbb9ac47
SHA256

7e55c3da8e88198f05b9d2696a3cac064498f97ce2bd57dee9f8ecca477f1acc
SHA512

8e822f4407c034bab53b23c2fc22c6caa6d51e80ee60528672e7d03a712a57bfba9729049d67a867838a876ef53d51c81e1b82fdbbb0edd0473db675bfb1fc6c
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAH0Z:bCDOw9aMDooc+vAUZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2052-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012279-11.dat	CryptoLocker_rule2
behavioral1/memory/2052-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2836-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2836	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2052	2024-06-03_359810d2c8d40412b90848bbb50f95c3_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 2052 wrote to memory of 2836	2052	2024-06-03_359810d2c8d40412b90848bbb50f95c3_cryptolocker.exe	28
PID 2052 wrote to memory of 2836	2052	2024-06-03_359810d2c8d40412b90848bbb50f95c3_cryptolocker.exe	28
PID 2052 wrote to memory of 2836	2052	2024-06-03_359810d2c8d40412b90848bbb50f95c3_cryptolocker.exe	28
PID 2052 wrote to memory of 2836	2052	2024-06-03_359810d2c8d40412b90848bbb50f95c3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-03_359810d2c8d40412b90848bbb50f95c3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_359810d2c8d40412b90848bbb50f95c3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2052
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2836

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
44KB

MD5
43ae9b70c03e1c5ecd8fa8c806042f04

SHA1
d899eb4c04df8edf9f87945ae84396c4cdfd9eb5

SHA256
85ed08c29534d29c83f37687eacf5bb94cafe007c550a57ec9e19b3a8bdc7f57

SHA512
cc9a721f8612e2eb5d61d19ea3a869e688ca246a7b3726f5903c5b0526f0cc9563e3593b9db75496773e4e4f8e3df0c8091cccd0806d885d857b3894fa350620

Download Submit
memory/2052-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2052-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2052-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2052-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2052-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2836-17-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/2836-24-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2836-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download