4e46578229bd501acb3ff287ea94d420451fcbf3564fb4d53677ce4ec29e3da9

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
18/02/2024, 16:58

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General

Target

2024-02-18_dd3b705cf2b7a9c4673f64e274d44447_cryptolocker.exe
Size

99KB
MD5

dd3b705cf2b7a9c4673f64e274d44447
SHA1

32dec97820ba620676b61d9d04da3a3d2924a98e
SHA256

4e46578229bd501acb3ff287ea94d420451fcbf3564fb4d53677ce4ec29e3da9
SHA512

3af4d778c9655198cee36e6eb8dc6ab696c680a65d4fd51df9fa736edf92cf85cb0684454296ff068e547eac8a265425e0f03c11a91ffa0fa1863bee950090e4
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPer818:AnBdOOtEvwDpj6zY

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1212-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a00000001312a-11.dat	CryptoLocker_rule2
behavioral1/memory/1212-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2152-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2152-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1212-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a00000001312a-11.dat	CryptoLocker_set1
behavioral1/memory/1212-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2152-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2152-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1212-1-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000a00000001312a-11.dat	UPX
behavioral1/memory/1212-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2152-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2152-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2152	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1212	2024-02-18_dd3b705cf2b7a9c4673f64e274d44447_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1212-1-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000a00000001312a-11.dat	upx
behavioral1/memory/1212-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2152-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2152-26-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 1212 wrote to memory of 2152	1212	2024-02-18_dd3b705cf2b7a9c4673f64e274d44447_cryptolocker.exe	28
PID 1212 wrote to memory of 2152	1212	2024-02-18_dd3b705cf2b7a9c4673f64e274d44447_cryptolocker.exe	28
PID 1212 wrote to memory of 2152	1212	2024-02-18_dd3b705cf2b7a9c4673f64e274d44447_cryptolocker.exe	28
PID 1212 wrote to memory of 2152	1212	2024-02-18_dd3b705cf2b7a9c4673f64e274d44447_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-18_dd3b705cf2b7a9c4673f64e274d44447_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_dd3b705cf2b7a9c4673f64e274d44447_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2152

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
99KB

MD5
095d228c2fac6f9904585b2089d61853

SHA1
1fd4e29b1ebaffa8a9cc08617fa64ee2199a717b

SHA256
65654d8d0de561ef98c73c7bcabde0dddd34afa734a3b7c9e559809b4638283c

SHA512
5855b497aa3245fc0ebe7d88bcda0632243cf8d9c7cdf7af63abdd1af12cde60983b4456dc348479d0bd92222fa01a567e296fb3f48144e8ffe85f5818f6cb2c

Download Submit
memory/1212-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1212-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1212-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1212-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1212-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2152-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2152-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2152-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2152-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download