51f126d08fc2479dd09583e4cec8cd3ec1c2ec2552623cbe7e3b18dcc69276f5

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/02/2024, 04:42

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General

Target

2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe
Size

40KB
MD5

38155ce3138dee13a79b87ddded60134
SHA1

c4c21fe841b9ff79c7f6cae17c00ac19f556c6a0
SHA256

51f126d08fc2479dd09583e4cec8cd3ec1c2ec2552623cbe7e3b18dcc69276f5
SHA512

e2ce3290caafdc52334e158a46565d0eb76f2036447a2eb72e1a04bd806b2a295accefbff004fb8ec5d7696c155e4a4e8b6038a315903256e8d33c8b91b082d9
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6DySWW:bIDOw9a0Dwo3P1ojvUSDX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001225b-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2968	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2120	2024-02-29_38155ce3138dee13a79b87ddded60134_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 2120 wrote to memory of 2968	2120	2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe	28
PID 2120 wrote to memory of 2968	2120	2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe	28
PID 2120 wrote to memory of 2968	2120	2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe	28
PID 2120 wrote to memory of 2968	2120	2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2968

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
40KB

MD5
1b3668ae9bee62bcfc7f8d46b53bdc24

SHA1
d92517aa4b697cd6c8146dde7c656073a2fecb18

SHA256
93e71d64123cdd086a3318d6cee749fa134ca105fb9305f48968444f2747abb1

SHA512
6cf706817f3e97b2955e60fa6560a5e86bd9eb0b23b6d81243ad1eddcaa65a53b0bc818250eb677b43403a3ed2329cf390b06dadcaf3749a69d9e4472717e619

Download Submit
memory/2120-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2120-1-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2120-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2968-15-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2968-17-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download