4d65c8845b68da5fa654919cf8930bc0b85b6ef6cb82d0053b982945a0014ff8

Analysis

max time kernel
149s
max time network
156s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-03-2024 13:53

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General

Target

2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe
Size

49KB
MD5

99a6ddf994c0fecf64bd5345b5f3e98c
SHA1

70d0ae83b1cfa18e0d2f630183407733e9d7597e
SHA256

4d65c8845b68da5fa654919cf8930bc0b85b6ef6cb82d0053b982945a0014ff8
SHA512

0346da28856c8da95e43f8a06a35d678c392a135cf23fce661e09187313332066e9a5c094354fc9d19ea6f537934108a7392729b0153e2fb3439105d6e73a4ad
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZT:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001223a-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001223a-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3056	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2192	2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_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 2192 wrote to memory of 3056	2192	2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe	28
PID 2192 wrote to memory of 3056	2192	2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe	28
PID 2192 wrote to memory of 3056	2192	2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe	28
PID 2192 wrote to memory of 3056	2192	2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_99a6ddf994c0fecf64bd5345b5f3e98c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3056

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\asih.exe

Filesize
49KB

MD5
332afb043bdb9c9c79dbad2424621f7c

SHA1
0be1193aabea778ebfbd72e2387017fb3a6198ed

SHA256
21ac4e1963f025796c44ddfaa8648bf78bbf7a981ff3a070d23d53cfb70e29e6

SHA512
8ebe5cfc41c6d27ea22c31aa279a6692830c6e6a2860f22a124bf85e88759d0fc479fd20eef7c375b45bbec5df76986e5071f9340768a861496c19bc0d58eceb

Download Submit
memory/2192-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2192-1-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2192-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3056-15-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/3056-20-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download