latrodectus | 1db686635bcdde30163e1e624c4d8f107fd2a20507690151c69cc6a0c482207a

Analysis

max time kernel
150s
max time network
125s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
26-08-2024 12:52

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General

Target

1db686635bcdde30163e1e624c4d8f107fd2a20507690151c69cc6a0c482207a.dll
Size

701KB
MD5

8703a1209bd5be3e9c15eb4e5db332de
SHA1

0e110df37f6315f3a76b12714afcc55323563388
SHA256

1db686635bcdde30163e1e624c4d8f107fd2a20507690151c69cc6a0c482207a
SHA512

2dbd2753264091580055bbbcde0c6de15c3eaa593f1c1eabf0d65cc886298149798dde80259058090b2bbb446dfab27589d90fe3f92411721d90c81c9234b9c4
SSDEEP

12288:MxoevQe9z3gFRpto9dqdUbkXlBWMbM9q2xsEX9Tmo8w7jkPpzGL8SCU2o3Fa52xg:Mx1vQeaLzGL8SCdYnW

Score

10^/10

latrodectus loader

Malware Config

Signatures

Detects Latrodectus 3 IoCs

Detects Latrodectus v1.4.

resource	yara_rule
behavioral1/memory/2540-0-0x0000000000130000-0x0000000000146000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2540-4-0x0000000000130000-0x0000000000146000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2512-9-0x00000000001B0000-0x00000000001C6000-memory.dmp	family_latrodectus_1_4

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

Deletes itself 1 IoCs

pid	Process
2540	rundll32.exe

Loads dropped DLL 8 IoCs

pid	Process
2512	rundll32.exe
2512	rundll32.exe
2512	rundll32.exe
2512	rundll32.exe
600	rundll32.exe
600	rundll32.exe
600	rundll32.exe
600	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2540	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 2512	2540	rundll32.exe	30
PID 2540 wrote to memory of 2512	2540	rundll32.exe	30
PID 2540 wrote to memory of 2512	2540	rundll32.exe	30
PID 1172 wrote to memory of 600	1172	taskeng.exe	33
PID 1172 wrote to memory of 600	1172	taskeng.exe	33
PID 1172 wrote to memory of 600	1172	taskeng.exe	33

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\1db686635bcdde30163e1e624c4d8f107fd2a20507690151c69cc6a0c482207a.dll,#1
1⤵
- Deletes itself
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\system32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_1fecc22a.dll", #1
  2⤵
  - Loads dropped DLL
  PID:2512

C:\Windows\system32\taskeng.exe
taskeng.exe {893A87B6-8447-424A-9ABB-CAC0920A6248} S-1-5-21-3450744190-3404161390-554719085-1000:PDIZKVQX\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1172
- C:\Windows\system32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_1fecc22a.dll", #1
  2⤵
  - Loads dropped DLL
  PID:600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Custom_update\Update_1fecc22a.dll

Filesize
701KB

MD5
8703a1209bd5be3e9c15eb4e5db332de

SHA1
0e110df37f6315f3a76b12714afcc55323563388

SHA256
1db686635bcdde30163e1e624c4d8f107fd2a20507690151c69cc6a0c482207a

SHA512
2dbd2753264091580055bbbcde0c6de15c3eaa593f1c1eabf0d65cc886298149798dde80259058090b2bbb446dfab27589d90fe3f92411721d90c81c9234b9c4

Download Submit
memory/2512-9-0x00000000001B0000-0x00000000001C6000-memory.dmp

Filesize
88KB

Download
memory/2540-0-0x0000000000130000-0x0000000000146000-memory.dmp

Filesize
88KB

Download
memory/2540-4-0x0000000000130000-0x0000000000146000-memory.dmp

Filesize
88KB

Download
memory/2540-2-0x0000000180000000-0x00000001800BA000-memory.dmp

Filesize
744KB

Download