latrodectus | 5decad758ad23f90ceafd132702935d4feb17a77859bbd2d6573f00e1d3180f1

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
30-08-2024 08:23

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General

Target

ef37aa053b8b86c089bfb95871511820N.dll
Size

72KB
MD5

ef37aa053b8b86c089bfb95871511820
SHA1

84b530565a0d6d84a96bd2a8ec89174dff77311d
SHA256

5decad758ad23f90ceafd132702935d4feb17a77859bbd2d6573f00e1d3180f1
SHA512

658350af7c46eae8bbfbf0aa4d78580a0efb7e908ef9c5a200c9d3cacc8a51c03930407bb5a1da86fc1ab58ca8bc4fd729a650ded220ce188c456b57cff82c5c
SSDEEP

1536:ozhHuRqOoGc2WsV/bWM5wpokf8m1eTWfk:ozhHuRooWM5wBkmHf

Score

10^/10

latrodectus loader

Malware Config

Signatures

Detects Latrodectus 2 IoCs

Detects Latrodectus v1.4.

resource	yara_rule
behavioral1/files/0x0007000000018780-1.dat	family_latrodectus_1_4
behavioral1/memory/2636-6-0x000007FEFAAA0000-0x000007FEFAAB6000-memory.dmp	family_latrodectus_1_4

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

Deletes itself 1 IoCs

pid	Process
2636	rundll32.exe

Loads dropped DLL 4 IoCs

pid	Process
1628	rundll32.exe
1628	rundll32.exe
1628	rundll32.exe
1628	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2636	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 1628	2636	rundll32.exe	30
PID 2636 wrote to memory of 1628	2636	rundll32.exe	30
PID 2636 wrote to memory of 1628	2636	rundll32.exe	30
PID 2636 wrote to memory of 2688	2636	rundll32.exe	31
PID 2636 wrote to memory of 2688	2636	rundll32.exe	31
PID 2636 wrote to memory of 2688	2636	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\ef37aa053b8b86c089bfb95871511820N.dll,#1
1⤵
- Deletes itself
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\system32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_c4bac14b.dll", #1
  2⤵
  - Loads dropped DLL
  PID:1628
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2636 -s 276
  2⤵
  PID:2688

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_c4bac14b.dll

Filesize
72KB

MD5
ef37aa053b8b86c089bfb95871511820

SHA1
84b530565a0d6d84a96bd2a8ec89174dff77311d

SHA256
5decad758ad23f90ceafd132702935d4feb17a77859bbd2d6573f00e1d3180f1

SHA512
658350af7c46eae8bbfbf0aa4d78580a0efb7e908ef9c5a200c9d3cacc8a51c03930407bb5a1da86fc1ab58ca8bc4fd729a650ded220ce188c456b57cff82c5c

Download Submit
memory/2636-6-0x000007FEFAAA0000-0x000007FEFAAB6000-memory.dmp

Filesize
88KB

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