e7ba035b2e0035a05c5b51c3130d73be305c71865f734556e44781ac78661af5

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
20/04/2024, 04:55

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General

Target

2024-04-20_f12851a675097374574b19e17650712f_cryptolocker.exe
Size

61KB
MD5

f12851a675097374574b19e17650712f
SHA1

31eddace3805aaccfb8802b6f61551c71d9c27aa
SHA256

e7ba035b2e0035a05c5b51c3130d73be305c71865f734556e44781ac78661af5
SHA512

54b0bed721d9bcd15d6cc713db5045a9b8442e8ef741355c42d2edb3437950d7c754d3af005a033101d06cea3fe9af54bfd1cf1cf29512a72b76e12017fd2a29
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVCbt5q:V6a+pOtEvwDpjvD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012256-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012256-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2016	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2340	2024-04-20_f12851a675097374574b19e17650712f_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 2340 wrote to memory of 2016	2340	2024-04-20_f12851a675097374574b19e17650712f_cryptolocker.exe	28
PID 2340 wrote to memory of 2016	2340	2024-04-20_f12851a675097374574b19e17650712f_cryptolocker.exe	28
PID 2340 wrote to memory of 2016	2340	2024-04-20_f12851a675097374574b19e17650712f_cryptolocker.exe	28
PID 2340 wrote to memory of 2016	2340	2024-04-20_f12851a675097374574b19e17650712f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-20_f12851a675097374574b19e17650712f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_f12851a675097374574b19e17650712f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2016

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
61KB

MD5
3f0a0fc6ed843ee4bde3f1ed7e6cacb0

SHA1
fa35f3c591bb7f71f0ace0be254eb458458bd9c7

SHA256
336d4c5cba92e1fe0d2a1a7a1cbb3cbde282b984bfb5c468fa92128d815a6293

SHA512
5d725f5489920ac27a17d59efc6f558be7fe374cffc13a6203530a705c91ce94c2f2ffb5be23f4a082d04dfc9b181d4f3a65735262e857e4364c3fa531bfd051

Download Submit
memory/2016-15-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

Filesize
24KB

Download
memory/2016-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2340-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2340-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2340-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download