9540b099f4c7fdadc9b4f80783e099e21ad721f2411667f175de4bfe808605ae

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
10/05/2024, 23:25

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General

Target

2024-05-10_94728b4d5f8234b02c5d64b338c4714c_cryptolocker.exe
Size

64KB
MD5

94728b4d5f8234b02c5d64b338c4714c
SHA1

890a4bb10d0c2941ca386ac16cefbe9e6cc3e1bc
SHA256

9540b099f4c7fdadc9b4f80783e099e21ad721f2411667f175de4bfe808605ae
SHA512

ff77b2fc6ebe2af35a3433b01b12d97f658c0a5b647328cd7ada4150eb79237864271576a59ac2e1d9257837eecfc396430cd6062bd0eed291a51f6f989852f9
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsiR:BbdDmjr+OtEvwDpjM84

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2960-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000015c52-11.dat	CryptoLocker_rule2
behavioral1/memory/2960-13-0x0000000000630000-0x0000000000640000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2848-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/2960-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2848-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2960-8-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000015c52-11.dat	UPX
behavioral1/memory/2960-13-0x0000000000630000-0x0000000000640000-memory.dmp	UPX
behavioral1/memory/2848-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2848	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2960	2024-05-10_94728b4d5f8234b02c5d64b338c4714c_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 2960 wrote to memory of 2848	2960	2024-05-10_94728b4d5f8234b02c5d64b338c4714c_cryptolocker.exe	28
PID 2960 wrote to memory of 2848	2960	2024-05-10_94728b4d5f8234b02c5d64b338c4714c_cryptolocker.exe	28
PID 2960 wrote to memory of 2848	2960	2024-05-10_94728b4d5f8234b02c5d64b338c4714c_cryptolocker.exe	28
PID 2960 wrote to memory of 2848	2960	2024-05-10_94728b4d5f8234b02c5d64b338c4714c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-10_94728b4d5f8234b02c5d64b338c4714c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_94728b4d5f8234b02c5d64b338c4714c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2848

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
64KB

MD5
8ddbbb082228a50851c6d98b13c70703

SHA1
7acd0438b6f7302481177720ead8694bc50b72dc

SHA256
cc059f09e00926039ee597d782a1cd5c0b32ce567e428ebb378136318515b892

SHA512
0401a9a3974328cc312c5484232aaf9bec4dfaff76e5eaba39e3b86b66ecdaf595959d303163a72aa39214b6782e47e00a199a50cc0064e7cb4eee0dc7198928

Download Submit
memory/2848-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2848-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2960-0-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2960-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2960-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2960-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2960-13-0x0000000000630000-0x0000000000640000-memory.dmp

Filesize
64KB

Download