6c643d472ea2d49af2cf07145625ee0eb51bc0e90674b555f71ff8a6e04ad8fd

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
20/04/2024, 23:30

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General

Target

2024-04-20_4c988ebe76dd482c4ff3b1b1c3a2899f_cryptolocker.exe
Size

46KB
MD5

4c988ebe76dd482c4ff3b1b1c3a2899f
SHA1

b969447bde10e25ae356b6474af1bb93c868d1db
SHA256

6c643d472ea2d49af2cf07145625ee0eb51bc0e90674b555f71ff8a6e04ad8fd
SHA512

a4f7b62e5a145beabf6ba46a9646017b7c4da5a7641a7cdffd96fa353ca4ebaca9b6d145a1fcaaa06a5a4b489c6155ba9bcb233ad0e5e75dd7979ed8f52d3748
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLW2VT:79inqyNR/QtOOtEvwDpjBKccJVODvy3e

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2792-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012251-11.dat	CryptoLocker_rule2
behavioral1/memory/2792-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2236-20-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2792-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012251-11.dat	CryptoLocker_set1
behavioral1/memory/2792-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2236-20-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2236	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2792	2024-04-20_4c988ebe76dd482c4ff3b1b1c3a2899f_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 2792 wrote to memory of 2236	2792	2024-04-20_4c988ebe76dd482c4ff3b1b1c3a2899f_cryptolocker.exe	28
PID 2792 wrote to memory of 2236	2792	2024-04-20_4c988ebe76dd482c4ff3b1b1c3a2899f_cryptolocker.exe	28
PID 2792 wrote to memory of 2236	2792	2024-04-20_4c988ebe76dd482c4ff3b1b1c3a2899f_cryptolocker.exe	28
PID 2792 wrote to memory of 2236	2792	2024-04-20_4c988ebe76dd482c4ff3b1b1c3a2899f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-20_4c988ebe76dd482c4ff3b1b1c3a2899f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_4c988ebe76dd482c4ff3b1b1c3a2899f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2236

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
46KB

MD5
954289206048e154eefd51a975004baa

SHA1
832c9dbfec5ab4f44559d234a5b53636d542775b

SHA256
c29d65ca28028d2ee5a260cf7156b586f09ec7320c483b2c9c167a53e7f8106a

SHA512
485a949c7e3a43bb499bfe5e5be23fb80d9e6ada2537421289e3ebc4bb9ba8c09f82f4df19e38024b9381861dbe245d815971a9b5f1513814b4d62e6ae16caaf

Download Submit
memory/2236-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2236-17-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/2236-20-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2792-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2792-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2792-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2792-3-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2792-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download