0a9b8a309257643c065a7fbe4df725b0318f533f29282bc0c4d6e200ed158e8e

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
07/06/2024, 21:23

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General

Target

2024-06-07_418cfca1e7c0f889fc858e29ef8abb6c_cryptolocker.exe
Size

41KB
MD5

418cfca1e7c0f889fc858e29ef8abb6c
SHA1

2f8874234a9e869f5b96d4d8821250facf6a00f3
SHA256

0a9b8a309257643c065a7fbe4df725b0318f533f29282bc0c4d6e200ed158e8e
SHA512

0eb379e416f421437bac95fd45a4413f6ec90966206d2d0761066e62d402e208e940cfa75f27b57acfbe5430e3ea127a6f9c64f3a5b218eab004bb025c6909de
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaBc4SA:qDdFJy3QMOtEvwDpjjWMl7TdsA

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000141a2-11.dat	CryptoLocker_rule2
behavioral1/memory/2360-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3060-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b0000000141a2-11.dat	CryptoLocker_set1
behavioral1/memory/2360-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3060-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b0000000141a2-11.dat	UPX
behavioral1/memory/2360-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3060-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3060	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2360	2024-06-07_418cfca1e7c0f889fc858e29ef8abb6c_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2360-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b0000000141a2-11.dat	upx
behavioral1/memory/2360-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3060-25-0x0000000000500000-0x0000000000510000-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 2360 wrote to memory of 3060	2360	2024-06-07_418cfca1e7c0f889fc858e29ef8abb6c_cryptolocker.exe	28
PID 2360 wrote to memory of 3060	2360	2024-06-07_418cfca1e7c0f889fc858e29ef8abb6c_cryptolocker.exe	28
PID 2360 wrote to memory of 3060	2360	2024-06-07_418cfca1e7c0f889fc858e29ef8abb6c_cryptolocker.exe	28
PID 2360 wrote to memory of 3060	2360	2024-06-07_418cfca1e7c0f889fc858e29ef8abb6c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-07_418cfca1e7c0f889fc858e29ef8abb6c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-07_418cfca1e7c0f889fc858e29ef8abb6c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3060

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
41KB

MD5
39cabafbbc76b7578fff2545d439a4df

SHA1
c983fe3b5fed4c96fb2d70328ca80d88fa766f6a

SHA256
bbce3a98fd8961ca2bd3ac1eb0df51226926bf93772cef9e69c15e71a80eee99

SHA512
47ecdec671c4e72d3ed6bc7746b91b5d6f5308eb91cd313be2ee4306ee18c6a924f9a69f4f3a0851d61671f69bdc784321548b7f2783894126068dce68caeb7f

Download Submit
memory/2360-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2360-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2360-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2360-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2360-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3060-26-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/3060-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3060-18-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download