fcbcc76d69cc1b590f52c03da118ea7dfd1038369fd01c21a45d4fd91ad35d0e

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 20:26

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General

Target

2024-05-29_3e0c852cdef4be7dba977a6bd1be22f2_cryptolocker.exe
Size

38KB
MD5

3e0c852cdef4be7dba977a6bd1be22f2
SHA1

aa8d1f8c6b874befa634d134a114f5003f9375b5
SHA256

fcbcc76d69cc1b590f52c03da118ea7dfd1038369fd01c21a45d4fd91ad35d0e
SHA512

5cea24fa70c7660c5ea0108d3a7e89f96c25ea7a40141e2ee0700c2f9e3e79545f9bcaa2b08aee30c39c89296c218c7fb7200d7f778fc40ccd57f17b5a39dee1
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3V6uVjhbuUys:b7o/2n1TCraU6GD1a4Xt9bRUlV5hbbys

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001227e-13.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3052	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2380	2024-05-29_3e0c852cdef4be7dba977a6bd1be22f2_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2380	2024-05-29_3e0c852cdef4be7dba977a6bd1be22f2_cryptolocker.exe
3052	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 3052	2380	2024-05-29_3e0c852cdef4be7dba977a6bd1be22f2_cryptolocker.exe	28
PID 2380 wrote to memory of 3052	2380	2024-05-29_3e0c852cdef4be7dba977a6bd1be22f2_cryptolocker.exe	28
PID 2380 wrote to memory of 3052	2380	2024-05-29_3e0c852cdef4be7dba977a6bd1be22f2_cryptolocker.exe	28
PID 2380 wrote to memory of 3052	2380	2024-05-29_3e0c852cdef4be7dba977a6bd1be22f2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_3e0c852cdef4be7dba977a6bd1be22f2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_3e0c852cdef4be7dba977a6bd1be22f2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:3052

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

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
38KB

MD5
4e248a1bddb0220791db8586f1b212d4

SHA1
6adbac9cac63cdadbc8d1634f8137648b8ac6f0b

SHA256
458e4a07eb5af33d69bc86c992e67d274572b1033bf7d66ee6859ea388dbc05d

SHA512
994147b847656ad2bfaf34fb8aab45167d08f26c2fb6bbf5dbc5162b384ff427da1e2383b3786344048ad9df775dd77c48dc5fd7ef5f646e573232c47c2559a6

Download Submit
memory/2380-0-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2380-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2380-8-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/3052-23-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download