1f65d45c697bd28c7bc6b5f2eaa556df850bd21c17da04d7581bd33a73f2d769

Analysis

max time kernel
212s
max time network
231s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/02/2024, 04:46

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General

Target

2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe
Size

92KB
MD5

633149d7fc0fef13b41f077294936b96
SHA1

01dbce0343fcff1f6f5a22152acfab906245f494
SHA256

1f65d45c697bd28c7bc6b5f2eaa556df850bd21c17da04d7581bd33a73f2d769
SHA512

01f7c09adb8da3b396effbb5fd14301f9345fb4fbeabc2a08d8effe828e14966681e400dcb60f1c6a66ec1ccd29c726e8981e6b796f2ba349ed00d2556955213
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0QVOg:AnBdOOtEvwDpj6zs

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2760-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2760-10-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00120000000055a2-13.dat	CryptoLocker_rule2
behavioral1/memory/2372-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2372-29-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2760-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2760-10-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00120000000055a2-13.dat	CryptoLocker_set1
behavioral1/memory/2372-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2372-29-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2760-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2760-10-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x00120000000055a2-13.dat	UPX
behavioral1/memory/2372-19-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2372-29-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2372	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2760	2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2760-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2760-10-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x00120000000055a2-13.dat	upx
behavioral1/memory/2372-19-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2372-29-0x0000000000500000-0x000000000050F000-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 2760 wrote to memory of 2372	2760	2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe	28
PID 2760 wrote to memory of 2372	2760	2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe	28
PID 2760 wrote to memory of 2372	2760	2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe	28
PID 2760 wrote to memory of 2372	2760	2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_633149d7fc0fef13b41f077294936b96_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2372

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
92KB

MD5
9ab33349dffba91974b5f822f3d34f6f

SHA1
69376ee573d86488186f908c9b52b4a72e7446c4

SHA256
9e2306d4bd845dd261d71aed3ef4345a2d040ccf57d2970f072d48d324f8dcb0

SHA512
acbcd35f90200cd029b3f801de0cee4270af1c9e9b9b82a9a63a2076878110e1c9b9db7b2e47cef8dee33b9bcf3bc61963b89643f43513fb8a7c348ecddd8e6d

Download Submit
memory/2372-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2372-21-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2372-23-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2372-29-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2760-1-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2760-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2760-3-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2760-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2760-10-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2760-18-0x0000000002810000-0x000000000281F000-memory.dmp

Filesize
60KB

Download