a95462c4f48d8da6a0449b91a227beb13811b7f00dedaf64176da8e4723b1afb

Analysis

max time kernel
174s
max time network
185s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19-01-2024 10:18

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General

Target

2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe
Size

47KB
MD5

d1e205dd09e1e55b492b503a801a2ff1
SHA1

cc71af238b0ba2a33969ab67f2fd4ab93ad635f7
SHA256

a95462c4f48d8da6a0449b91a227beb13811b7f00dedaf64176da8e4723b1afb
SHA512

a839706d75645657e54e41e240b09b93302f236fc4a12513fd7156e8fd9ad55e9180883d96e1aca472012fa2774108b0f9438090b9a091c71727c76a46394cd5
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnT9:79mqyNhQMOtEvwDpjBxe8S

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2300-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00070000000120ff-11.dat	CryptoLocker_rule2
behavioral1/memory/2764-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2300-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2300-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00070000000120ff-11.dat	CryptoLocker_set1
behavioral1/memory/2764-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2300-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2764	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2300	2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_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 2300 wrote to memory of 2764	2300	2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe	27
PID 2300 wrote to memory of 2764	2300	2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe	27
PID 2300 wrote to memory of 2764	2300	2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe	27
PID 2300 wrote to memory of 2764	2300	2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe	27

C:\Users\Admin\AppData\Local\Temp\2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-19_d1e205dd09e1e55b492b503a801a2ff1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2764

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
47KB

MD5
214a8d2982ff8ba9f7ed8e21426e7d15

SHA1
ccd702eb1f3cc57f40af90e0d4c727d6fd341935

SHA256
7ea3a86929b42974e879304dece2a31ec43e5a0dc1136183df1bb213aa40dbe3

SHA512
dfd785a727547b6104aff2bf76a87a251d2e1178b7d82e14a925e41d794da61a97b3c96ed7438af7f43b77a4121da641e0f1624a72ef74db7038277dff1c74a6

Download Submit
memory/2300-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2300-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2300-2-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2300-3-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2300-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2764-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2764-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2764-18-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download