16d66d178013617c419fc5eaef7151540b26604d211763780221efc24b2c4c18

Analysis

max time kernel
149s
max time network
155s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
21-02-2024 13:53

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General

Target

2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe
Size

44KB
MD5

90ae8a14ca3e7f58331add80ae5e5e63
SHA1

51d068fac2e31b34719107bbb6a65a2740eb6361
SHA256

16d66d178013617c419fc5eaef7151540b26604d211763780221efc24b2c4c18
SHA512

89c6e1a499d099658e6675cdf7fcceded83081c2dc4d239c4617d448693a71e4607f6d9899ea06c6be88faa2f009561dc212a234847b38664abda4e39d044fd4
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSJJO:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2196-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012261-11.dat	CryptoLocker_rule2
behavioral1/memory/2196-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2656-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2196-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012261-11.dat	CryptoLocker_set1
behavioral1/memory/2196-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2656-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2656	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2196	2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_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 2196 wrote to memory of 2656	2196	2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe	28
PID 2196 wrote to memory of 2656	2196	2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe	28
PID 2196 wrote to memory of 2656	2196	2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe	28
PID 2196 wrote to memory of 2656	2196	2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2656

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
45KB

MD5
494408f4da79cdee5e383b094e7dc127

SHA1
324c3abd734ad30a3a110a6062ccad8715828850

SHA256
9ab571c490b872a9d27b523e32fdfa57bc097b5c8f72bbb0dfa27f1fd3e4ede7

SHA512
48c4105b660c0fb634060a48eebb5becbdedc463063d8d8d9f09bb2003af9706d644ef4fcc772211ddaff898fb6dc1b9d4aff693dc04ec7476a9ba57f3fb5d11

Download Submit
memory/2196-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2196-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2196-3-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2196-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2196-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2656-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2656-19-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2656-18-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download