76d0eae94a7a89a8cbfc50121b639a2c5dacc2d92db9ef8e1e01d334e938c207

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
19/01/2024, 12:33

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General

Target

2024-01-19_355e4c6bac32489cbc1dca656b82e1f1_cryptolocker.exe
Size

62KB
MD5

355e4c6bac32489cbc1dca656b82e1f1
SHA1

a3da1d6df46099e8cb625a220e8a526adee39bfa
SHA256

76d0eae94a7a89a8cbfc50121b639a2c5dacc2d92db9ef8e1e01d334e938c207
SHA512

6425bbf0783ba8a4780ac8dc0b1f1555c5b9f0bf9ea63a3a997c96a8e6336b7960dea430d6ad7ff0eb0984fb5c11dc650c0cb41c3cc4acf5ca356ddcdd07816d
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjY6U2:1nK6a+qdOOtEvwDpjH

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1960-1-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1960-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a00000001220d-14.dat	CryptoLocker_rule2
behavioral1/memory/2976-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2976-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1960-1-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/1960-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a00000001220d-14.dat	CryptoLocker_set1
behavioral1/memory/2976-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2976-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1960-1-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/1960-15-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x000a00000001220d-14.dat	UPX
behavioral1/memory/2976-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2976-26-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2976	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1960	2024-01-19_355e4c6bac32489cbc1dca656b82e1f1_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1960-1-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/1960-15-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x000a00000001220d-14.dat	upx
behavioral1/memory/2976-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2976-26-0x0000000000500000-0x000000000050F311-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 1960 wrote to memory of 2976	1960	2024-01-19_355e4c6bac32489cbc1dca656b82e1f1_cryptolocker.exe	26
PID 1960 wrote to memory of 2976	1960	2024-01-19_355e4c6bac32489cbc1dca656b82e1f1_cryptolocker.exe	26
PID 1960 wrote to memory of 2976	1960	2024-01-19_355e4c6bac32489cbc1dca656b82e1f1_cryptolocker.exe	26
PID 1960 wrote to memory of 2976	1960	2024-01-19_355e4c6bac32489cbc1dca656b82e1f1_cryptolocker.exe	26

C:\Users\Admin\AppData\Local\Temp\2024-01-19_355e4c6bac32489cbc1dca656b82e1f1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-19_355e4c6bac32489cbc1dca656b82e1f1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2976

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

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
62KB

MD5
be4eaf0c35cb4a19bd5eb8c89248cb3e

SHA1
106527bfc4faade9b716ea3e6e5653220f980872

SHA256
6d4fddd483267e6424c6da3a7b88b430e0a8e09dcbb3994dfe425a132fa29fb2

SHA512
5f35523535b8a0b22f8b8b8661a0efbb5888782f7e53aa1704ece5e7d16be612d3827e8ca0fc982c0b6cbe0a3fbe8496cc7afeb9a3a0ae9f435ed1edf89783ee

Download Submit
memory/1960-1-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1960-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1960-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1960-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1960-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2976-25-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2976-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2976-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2976-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download