latrodectus | 3af3c1b6c72f09371c9975eb0914c5b187ba363c0cddf8164d14a0b7c1fcb5dc

General

Target

rozelin.dll
Size

1.5MB
MD5

f9bb8819674b780198ec05761a3ed0d6
SHA1

4c61542d76a0107eb80a950c33cd9bd5029a9b32
SHA256

3af3c1b6c72f09371c9975eb0914c5b187ba363c0cddf8164d14a0b7c1fcb5dc
SHA512

7b636446567b453c37a28b904d9f716a2aaff54676270760702995efdb521a10ae5f1a9254529eadc092b678a3b99e59efaec444f7f923d8e213298ae48f4fdc
SSDEEP

24576:aoAIjF2weVvd7+StIkabYLhRCuNHd56L4ZzFYMczX5UHuMH:cIjQwYvd7+StIkss/CY304NFYMypUH

Score

10^/10

latrodectus loader

Malware Config

Extracted

Family

latrodectus

C2

https://isomicrotich.com/test/

https://rilomenifis.com/test/

Signatures

Detects Latrodectus 6 IoCs

Detects Latrodectus v1.4.

resource	yara_rule
behavioral1/memory/2628-0-0x0000000001D30000-0x0000000001D46000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2628-1-0x0000000001D30000-0x0000000001D46000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2628-2-0x0000000001D30000-0x0000000001D46000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2628-10-0x0000000001D30000-0x0000000001D46000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2892-12-0x0000000000250000-0x0000000000266000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2892-11-0x0000000000250000-0x0000000000266000-memory.dmp	family_latrodectus_1_4

Latrodectus family
latrodectus
Latrodectus loader
Latrodectus is a loader written in C++.
loader latrodectus

Deletes itself 1 IoCs

pid	Process
2628	rundll32.exe

Loads dropped DLL 4 IoCs

pid	Process
2892	rundll32.exe
2892	rundll32.exe
2892	rundll32.exe
2892	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2628	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 2892	2628	rundll32.exe	31
PID 2628 wrote to memory of 2892	2628	rundll32.exe	31
PID 2628 wrote to memory of 2892	2628	rundll32.exe	31

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\rozelin.dll,#1
1⤵
- Deletes itself
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Windows\system32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_944056e8.dll", #1
  2⤵
  - Loads dropped DLL
  PID:2892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Custom_update\Update_944056e8.dll

Filesize
1.5MB

MD5
f9bb8819674b780198ec05761a3ed0d6

SHA1
4c61542d76a0107eb80a950c33cd9bd5029a9b32

SHA256
3af3c1b6c72f09371c9975eb0914c5b187ba363c0cddf8164d14a0b7c1fcb5dc

SHA512
7b636446567b453c37a28b904d9f716a2aaff54676270760702995efdb521a10ae5f1a9254529eadc092b678a3b99e59efaec444f7f923d8e213298ae48f4fdc

Download Submit
memory/2628-0-0x0000000001D30000-0x0000000001D46000-memory.dmp

Filesize
88KB

Download
memory/2628-1-0x0000000001D30000-0x0000000001D46000-memory.dmp

Filesize
88KB

Download
memory/2628-2-0x0000000001D30000-0x0000000001D46000-memory.dmp

Filesize
88KB

Download
memory/2628-4-0x0000000180000000-0x0000000180190000-memory.dmp

Filesize
1.6MB

Download
memory/2628-10-0x0000000001D30000-0x0000000001D46000-memory.dmp

Filesize
88KB

Download
memory/2892-12-0x0000000000250000-0x0000000000266000-memory.dmp

Filesize
88KB

Download
memory/2892-11-0x0000000000250000-0x0000000000266000-memory.dmp

Filesize
88KB

Download

Analysis

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