7719ab48f46c90030422847b2f8ea4e57308973a41a1514370f3ab7e01c29b43

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21/02/2024, 18:04

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General

Target

2024-02-21_e3c63d9d7a2cb3723358e2912009491c_cryptolocker.exe
Size

44KB
MD5

e3c63d9d7a2cb3723358e2912009491c
SHA1

31eee676e146fc7809d535426ecc23e646129d65
SHA256

7719ab48f46c90030422847b2f8ea4e57308973a41a1514370f3ab7e01c29b43
SHA512

da7e023881890667076676141545824fc1392310c90768e2d98153d109637dbeb6b3233dad5a5d356d0aaa98b1170db19393fb4a2bb26350b1615d64cf286687
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSR:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2152-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a00000001410d-11.dat	CryptoLocker_rule2
behavioral1/memory/2152-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2140-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2152-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a00000001410d-11.dat	CryptoLocker_set1
behavioral1/memory/2152-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2140-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2140	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2152	2024-02-21_e3c63d9d7a2cb3723358e2912009491c_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 2152 wrote to memory of 2140	2152	2024-02-21_e3c63d9d7a2cb3723358e2912009491c_cryptolocker.exe	28
PID 2152 wrote to memory of 2140	2152	2024-02-21_e3c63d9d7a2cb3723358e2912009491c_cryptolocker.exe	28
PID 2152 wrote to memory of 2140	2152	2024-02-21_e3c63d9d7a2cb3723358e2912009491c_cryptolocker.exe	28
PID 2152 wrote to memory of 2140	2152	2024-02-21_e3c63d9d7a2cb3723358e2912009491c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-21_e3c63d9d7a2cb3723358e2912009491c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_e3c63d9d7a2cb3723358e2912009491c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2140

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
44KB

MD5
b108aec993b97c1174b24a7c8133adfa

SHA1
8acb355a5c031d9ad49866ce6d74206eaa4325b4

SHA256
bd9a12b34713c5906242ac4e365802c0883df8dc63106586249504ea193800cf

SHA512
496531ee16a54b89f07b1075e307e080ad0a10fa659fa2786027e54367b6c423ec205d117279fe9aea2cd81f61794fcc8e5daa5bbccde126b2a0494ae9ad9ae3

Download Submit
memory/2140-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2140-18-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2140-20-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2152-1-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2152-0-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2152-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2152-3-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2152-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download