621afa94f7cb9e70a3462fc1ed5c643e8aa68be647987cd52d9cc8270c8ca779

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
20-02-2024 14:40

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General

Target

2024-02-20_6b198d34ce65322d22896b97e8e1566b_cryptolocker.exe
Size

98KB
MD5

6b198d34ce65322d22896b97e8e1566b
SHA1

3bf300758ef5694cc42c855b7cfb855890987e53
SHA256

621afa94f7cb9e70a3462fc1ed5c643e8aa68be647987cd52d9cc8270c8ca779
SHA512

4815a8056469484b248b2c35bc6b19eccc9a91bba78d935db99950df5c54f952ed13b0f9b5ab9921b9c551096c36809568735df7f9b96ec9227cab655f9204af
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgbwt:V6a+pOtEvwDpjtz5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012274-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012274-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1640	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2272	2024-02-20_6b198d34ce65322d22896b97e8e1566b_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 2272 wrote to memory of 1640	2272	2024-02-20_6b198d34ce65322d22896b97e8e1566b_cryptolocker.exe	28
PID 2272 wrote to memory of 1640	2272	2024-02-20_6b198d34ce65322d22896b97e8e1566b_cryptolocker.exe	28
PID 2272 wrote to memory of 1640	2272	2024-02-20_6b198d34ce65322d22896b97e8e1566b_cryptolocker.exe	28
PID 2272 wrote to memory of 1640	2272	2024-02-20_6b198d34ce65322d22896b97e8e1566b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-20_6b198d34ce65322d22896b97e8e1566b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_6b198d34ce65322d22896b97e8e1566b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1640

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
98KB

MD5
2f895794f0d06cd16659c23728c26cf8

SHA1
00296e5da1aaadc1c07803c4e6c69a40fc679a48

SHA256
73ab184420336f00a50b09db4e8a6766949c31112e282509d53db6cba068e77f

SHA512
59275a9801a19e907d8e19484673f86303f9a539f121ccfb6110d47e70f092c30253fac1343494f28414da50ce16aba09e0882d6483731af3fa323e1d281c52e

Download Submit
memory/1640-16-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1640-15-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2272-0-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2272-1-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2272-8-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download