e11521cba469a4d16ffccbeb921cea8ea30086af47f7ec48953c3772f10d9631

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
29/02/2024, 09:46

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General

Target

2024-02-29_8d725fa5748b774a4b45a4945f403723_cryptolocker.exe
Size

126KB
MD5

8d725fa5748b774a4b45a4945f403723
SHA1

17469d33c0db5e0ebf0af63b9883d47d573faaf0
SHA256

e11521cba469a4d16ffccbeb921cea8ea30086af47f7ec48953c3772f10d9631
SHA512

80216b388c08c3aa54b77142d7c0dea8177948a94a1c3c491a7aaeb3e8c4fe54b00051a849d69aca8dde0d7c7c8ae33790121bc53e1e7dd260fd2ddbdf85d92f
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1es:AnBdOOtEvwDpj6zi

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2456-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0008000000012262-11.dat	CryptoLocker_rule2
behavioral1/memory/2456-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2516-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2516-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2456-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0008000000012262-11.dat	CryptoLocker_set1
behavioral1/memory/2456-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2516-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2516-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2456-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x0008000000012262-11.dat	UPX
behavioral1/memory/2456-14-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2516-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2516-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2516	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2456	2024-02-29_8d725fa5748b774a4b45a4945f403723_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2456-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x0008000000012262-11.dat	upx
behavioral1/memory/2456-14-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2516-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2516-27-0x0000000000500000-0x000000000050F000-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 2456 wrote to memory of 2516	2456	2024-02-29_8d725fa5748b774a4b45a4945f403723_cryptolocker.exe	28
PID 2456 wrote to memory of 2516	2456	2024-02-29_8d725fa5748b774a4b45a4945f403723_cryptolocker.exe	28
PID 2456 wrote to memory of 2516	2456	2024-02-29_8d725fa5748b774a4b45a4945f403723_cryptolocker.exe	28
PID 2456 wrote to memory of 2516	2456	2024-02-29_8d725fa5748b774a4b45a4945f403723_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-29_8d725fa5748b774a4b45a4945f403723_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_8d725fa5748b774a4b45a4945f403723_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2516

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
126KB

MD5
632cbc2452358af9be4229b8cd198831

SHA1
4b0c2472c3f9a565a25bddbc8a53b30390fde8e7

SHA256
1055308fe02aa81ef3aee084524b2163013fbe8e3e832cd7ebc26d0c8c19f4bf

SHA512
117fa501ff07c80fea80d69c9dc2072878fb231a57e2fe8fcb20931626bfba0e49c4de62f76191d4d0e7ae72192e9dff0eb4585ef30768c53fce1101cd95b572

Download Submit
memory/2456-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2456-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2456-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2456-2-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2456-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2456-16-0x0000000002480000-0x000000000248F000-memory.dmp

Filesize
60KB

Download
memory/2456-29-0x0000000002480000-0x000000000248F000-memory.dmp

Filesize
60KB

Download
memory/2516-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2516-19-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2516-26-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2516-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download