bcbd9be946286d03ae2ef96d93d58a1c87d3bab3170e273c959a375491718459

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
15/05/2024, 18:27

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General

Target

2024-05-15_1a4575d7756ef7efbcadc7e5bb6088c2_cryptolocker.exe
Size

41KB
MD5

1a4575d7756ef7efbcadc7e5bb6088c2
SHA1

7b696471223ff75972fa48232b7737592d697f3e
SHA256

bcbd9be946286d03ae2ef96d93d58a1c87d3bab3170e273c959a375491718459
SHA512

a91d0c1e126c6a7edc3fd29138188cd5fafcd35f51685022256cee4b825758289e8aa4c0b548001d5072c725427bde5027efa3d1cc62ba4874c4b7fec123154a
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqtA:bCDOw9aMDooc+vAqtA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2308-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000014323-11.dat	CryptoLocker_rule2
behavioral1/memory/2308-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2664-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2664	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2308	2024-05-15_1a4575d7756ef7efbcadc7e5bb6088c2_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 2308 wrote to memory of 2664	2308	2024-05-15_1a4575d7756ef7efbcadc7e5bb6088c2_cryptolocker.exe	28
PID 2308 wrote to memory of 2664	2308	2024-05-15_1a4575d7756ef7efbcadc7e5bb6088c2_cryptolocker.exe	28
PID 2308 wrote to memory of 2664	2308	2024-05-15_1a4575d7756ef7efbcadc7e5bb6088c2_cryptolocker.exe	28
PID 2308 wrote to memory of 2664	2308	2024-05-15_1a4575d7756ef7efbcadc7e5bb6088c2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-15_1a4575d7756ef7efbcadc7e5bb6088c2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-15_1a4575d7756ef7efbcadc7e5bb6088c2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2664

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
e329dacb7c9adc4841649a5050395a2f

SHA1
22871d12467bd00713314db58b9d23e422d3bb93

SHA256
6b4cd8965344937ed35e50f858db2a64f29551c06801aa14365750ac02a40c9f

SHA512
30954c586daa7390e7eca522bdc72287a4232051869985ee019b465cbc060544367b8aeb1e4d726fa9e83de6b7cc79975dbc56efa4fb6141547dd126c1f62021

Download Submit
memory/2308-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2308-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2308-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2308-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2308-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2308-14-0x0000000002210000-0x000000000221A000-memory.dmp

Filesize
40KB

Download
memory/2664-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2664-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2664-18-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download