a8271ab496d4f29b1860542db4265e77dce04b00d41e8df8dd4908c8c14107ee

Analysis

max time kernel
136s
max time network
147s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10-03-2024 09:47

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General

Target

2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe
Size

38KB
MD5

bce1070054341e451f49ddcc6e7ffbf9
SHA1

6586fc754a591ce1e7cc1b4a560296b0581a5662
SHA256

a8271ab496d4f29b1860542db4265e77dce04b00d41e8df8dd4908c8c14107ee
SHA512

b80dc30921f2c60de77f6caccc1c5d78f979caf995ac4df892fdffd91eae47206cd3aa388640e31b5b084884039f5ae69a3616d31f4425ab836cf0fffcd7c606
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLC00T:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1640-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001223d-11.dat	CryptoLocker_rule2
behavioral1/memory/1640-12-0x0000000002700000-0x000000000270B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1640-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2040-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1640-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000900000001223d-11.dat	CryptoLocker_set1
behavioral1/memory/1640-12-0x0000000002700000-0x000000000270B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1640-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2040-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2040	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1640	2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe

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 1640 wrote to memory of 2040	1640	2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe	28
PID 1640 wrote to memory of 2040	1640	2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe	28
PID 1640 wrote to memory of 2040	1640	2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe	28
PID 1640 wrote to memory of 2040	1640	2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_bce1070054341e451f49ddcc6e7ffbf9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2040

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
38KB

MD5
54ac7ea6911295d837d3458ace37fa06

SHA1
446f345fdcf1a2f4de8ef03bbb79e12f3131bba7

SHA256
2da7d9d297b9ef7a454292ace2eb64dae982e22d789b7e2c2ec73ff756ca60e6

SHA512
5ff026ec417028d526db8c0a272c427d5b7ac75df7cd369aefa94f57b0ab2e67ea9ebcfcbb28c2c6bb5216bddfd79427c56783c5eb258cb48e47e83e786ef764

Download Submit
memory/1640-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1640-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1640-2-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1640-3-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1640-12-0x0000000002700000-0x000000000270B000-memory.dmp

Filesize
44KB

Download
memory/1640-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2040-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2040-20-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2040-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download