435cb902e81f957fa94f9bd9b35722c5efbfd2ee01e7dbb5f52db0df1ef8e20b

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
05/05/2024, 05:26

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General

Target

2024-05-05_df20c5b288d537545f5cb1778162449e_cryptolocker.exe
Size

39KB
MD5

df20c5b288d537545f5cb1778162449e
SHA1

8102eccb21cd3734c3ec1c6182e9d52070e10e8f
SHA256

435cb902e81f957fa94f9bd9b35722c5efbfd2ee01e7dbb5f52db0df1ef8e20b
SHA512

8d96f2766565a33346b0fd6006f906e563bb4a058b8383a92d00cedf61623c9ce91653d9f848377acf29e85306cd88255603425d4205b9b60fdf80b2bb21ce99
SSDEEP

768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDk9lJ:ZzFbxmLPWQMOtEvwDpjLeJAsKcWJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000014323-11.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2648	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2392	2024-05-05_df20c5b288d537545f5cb1778162449e_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 2392 wrote to memory of 2648	2392	2024-05-05_df20c5b288d537545f5cb1778162449e_cryptolocker.exe	28
PID 2392 wrote to memory of 2648	2392	2024-05-05_df20c5b288d537545f5cb1778162449e_cryptolocker.exe	28
PID 2392 wrote to memory of 2648	2392	2024-05-05_df20c5b288d537545f5cb1778162449e_cryptolocker.exe	28
PID 2392 wrote to memory of 2648	2392	2024-05-05_df20c5b288d537545f5cb1778162449e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-05_df20c5b288d537545f5cb1778162449e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-05_df20c5b288d537545f5cb1778162449e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2648

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\misid.exe

Filesize
39KB

MD5
a1e697cb69013b66c068bd0c201f278b

SHA1
8b74ea3a751fa3b91198ee50495472f879e86795

SHA256
35a87c81a886d83e508b1ae9287da94cbed7dae619936f0c1dae38aa45ed6d25

SHA512
ef277212e9208f9ef9baa932606f5f44ba0a07ba2551b35c65ededbab5bc97ec1a31b6e69fc013d515564fb4bebf0b53fae9087fdb81a932e3594d98d356b7ca

Download Submit
memory/2392-0-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2392-1-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2392-9-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2392-8-0x0000000000230000-0x00000000002B0000-memory.dmp

Filesize
512KB

Download
memory/2648-16-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2648-24-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2648-23-0x00000000001C0000-0x0000000000200000-memory.dmp

Filesize
256KB

Download