0bdb735ca7db2cea0e6c3c91f6b84497e1ff90691b857226e2bf13600efcf1fa

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-02-2024 19:44

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General

Target

2024-02-12_0b35d54aa4eabe8c392c31ff6ab95a52_cryptolocker.exe
Size

54KB
MD5

0b35d54aa4eabe8c392c31ff6ab95a52
SHA1

f5994e935eac3667bceea51323703a18d00bcacc
SHA256

0bdb735ca7db2cea0e6c3c91f6b84497e1ff90691b857226e2bf13600efcf1fa
SHA512

9f203b084c647fcac02ea96f94cf3b435fdf125a86051167a7b4a888d3c1bcaacd439f3b88396c1dd7e055904c9cf3eb90e3d6f61f8a098662363544b6269708
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CdMFa:79mqyNhQMOtEvwDpjBPY7xv3g8ZFa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2488-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2488-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2672-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2488-13-0x0000000002800000-0x000000000280F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2488-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2488-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2672-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2488-13-0x0000000002800000-0x000000000280F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2672 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_0b35d54aa4eabe8c392c31ff6ab95a52_cryptolocker.exe

pid process

2488 2024-02-12_0b35d54aa4eabe8c392c31ff6ab95a52_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2672	asih.exe

pid	process
2488	2024-02-12_0b35d54aa4eabe8c392c31ff6ab95a52_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-02-12_0b35d54aa4eabe8c392c31ff6ab95a52_cryptolocker.exe

description	pid	process	target process
PID 2488 wrote to memory of 2672	2488	2024-02-12_0b35d54aa4eabe8c392c31ff6ab95a52_cryptolocker.exe	asih.exe
PID 2488 wrote to memory of 2672	2488	2024-02-12_0b35d54aa4eabe8c392c31ff6ab95a52_cryptolocker.exe	asih.exe
PID 2488 wrote to memory of 2672	2488	2024-02-12_0b35d54aa4eabe8c392c31ff6ab95a52_cryptolocker.exe	asih.exe
PID 2488 wrote to memory of 2672	2488	2024-02-12_0b35d54aa4eabe8c392c31ff6ab95a52_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_0b35d54aa4eabe8c392c31ff6ab95a52_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_0b35d54aa4eabe8c392c31ff6ab95a52_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2488

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2672

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
54KB

MD5
62378d703fb5d8e9e1c83f60bceaaa2c

SHA1
6c3abcc6f00414275135fa35e61dccb200587dd3

SHA256
932650c61224bf7a5abbb3e7f628421d58ad89d1f5f94dcedbffdc29e81f4bf9

SHA512
19b3afbb52bd7f897891227e2acb6c642ab6cfcbe7c004da17279b29c72a7946283346821272cb059123cd25b4b22974ac853174bc5d891d18b73075d378c1bf

Download Submit
memory/2488-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2488-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2488-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2488-4-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2488-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2488-13-0x0000000002800000-0x000000000280F000-memory.dmp

Filesize
60KB

Download
memory/2672-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2672-19-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download