83dc190afa44e898c6f095119264b961d546941c48d90b954b855d58179f2434

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 02:52

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General

Target

2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe
Size

50KB
MD5

e11098b1984a86d8d1d45df23e569c48
SHA1

b8127d4efe6f9be740dfa2eab64a883e356481f8
SHA256

83dc190afa44e898c6f095119264b961d546941c48d90b954b855d58179f2434
SHA512

3fa71b3fde564a94c0933454daa95ceb154e17e0cd967aeee76be1ed374cf5f21262b3e6f490b8c2d6c12a8af28afd3be345417a043bdde35a42559448363d52
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoccN:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1308-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1308-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2992-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2992-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1308-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2992-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2992-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1308-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1308-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2992-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2992-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2992 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe

pid process

1308 2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2992	asih.exe

pid	process
1308	2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe

description	pid	process	target process
PID 1308 wrote to memory of 2992	1308	2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe	asih.exe
PID 1308 wrote to memory of 2992	1308	2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe	asih.exe
PID 1308 wrote to memory of 2992	1308	2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe	asih.exe
PID 1308 wrote to memory of 2992	1308	2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_e11098b1984a86d8d1d45df23e569c48_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1308

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2992

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
50KB

MD5
82e14ab34df188f7bb871c6e0091e427

SHA1
7cd99a5abcbd8049cb6c29f712c2e322a0b2473e

SHA256
31f7a4721098673ac81058595901de653c168eaa84baefc4003d81007675ca3b

SHA512
32b6788de2a8a0548d165652caab058688508f30363b82e439068e806517718d7cb30e17de76e958d4193734afb8e43fdb7735ad6a5660031f3bcd5fe9a3f576

Download Submit
memory/1308-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1308-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1308-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1308-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1308-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2992-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2992-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2992-26-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2992-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download