efc847b8b22dabeb00e19343831018c9cfea125c6885524aefbf6cb3dfe16a25

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18/04/2024, 05:46

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General

Target

2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe
Size

389KB
MD5

57dc53d4c436d7f20e14905df7e355d8
SHA1

8d4288bf8c6d9b33b92305596e312782911d90d2
SHA256

efc847b8b22dabeb00e19343831018c9cfea125c6885524aefbf6cb3dfe16a25
SHA512

8d974f2f2ded35d4900267d1a165d06691e2942b1fb5db079ec0b2ebaf7756c2f4d74a48bf44e501080d2e78255556e28859c9ebc5a65559d23edc694f71a612
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzX3:nnOflT/ZFIjBz3xjTxynGUOUhX3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012247-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2500	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2068	2024-04-18_57dc53d4c436d7f20e14905df7e355d8_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 2068 wrote to memory of 2500	2068	2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe	28
PID 2068 wrote to memory of 2500	2068	2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe	28
PID 2068 wrote to memory of 2500	2068	2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe	28
PID 2068 wrote to memory of 2500	2068	2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2500

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\hasfj.exe

Filesize
389KB

MD5
36e877283893aefdc9b70a80a87b200a

SHA1
923ccc012ef7d7c9a37a20276b2a01cbd541effb

SHA256
21dcf7238c7d41ed939223c4f761a25b5bf250ef8561de58f61ff20c57963e86

SHA512
c952c68663187aa5b1ea2edfbe66bff4139b6690b903b751ab842962138e2eca3c77bf0d463098034aa154f2ee356ee08ec1582a6fa605eea831e6e5ddcfce8d

Download Submit
memory/2068-0-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2068-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2068-1-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2500-15-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2500-17-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download