0b701ba7c405ddefeea0c5748d816f697ba9fa7c30cedbc2fc5a607f7defc674

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02/06/2024, 13:55

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General

Target

2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe
Size

42KB
MD5

dd9992cbe0e967903b16b31879b24685
SHA1

848e4443b50a360cf95e8d740d25e7138601d5b8
SHA256

0b701ba7c405ddefeea0c5748d816f697ba9fa7c30cedbc2fc5a607f7defc674
SHA512

ebce38117929896b910b0c5f556bec4e95c13c3964f9b23497bfe41c4645c7f3c6db5e3c6793aa6f979369c382e4dcf302730e7d63b9b30b77a5d91574a855ad
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqAa:bCDOw9aMDooc+vAqAa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2040-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000014284-11.dat	CryptoLocker_rule2
behavioral1/memory/2040-12-0x0000000002730000-0x000000000273A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2040-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1688-25-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1688	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2040	2024-06-02_dd9992cbe0e967903b16b31879b24685_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 2040 wrote to memory of 1688	2040	2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe	28
PID 2040 wrote to memory of 1688	2040	2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe	28
PID 2040 wrote to memory of 1688	2040	2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe	28
PID 2040 wrote to memory of 1688	2040	2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1688

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
42KB

MD5
a91b917c4a912e538304b167e333ab7f

SHA1
000aa85bfaf706639e96cf2c53dbb3fce38dd570

SHA256
769d3903866c406873a95bdfc76885d98200d7fed8de166cb1433049ff783166

SHA512
210b9548ca6e60e9b6eae724ada71b69dd6dd4ab7a08e0774cdaa8fad9885970e6dcf5ae06b1cd2b1fd8f0937bb064071a2e80d431dd50a48d6bb9f7889b3d4e

Download Submit
memory/1688-26-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1688-25-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1688-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2040-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2040-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2040-2-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/2040-9-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2040-12-0x0000000002730000-0x000000000273A000-memory.dmp

Filesize
40KB

Download
memory/2040-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download