latrodectus | fc21a125287c3539e11408587bcaa6f3b54784d9d458facbc54994f05d7ef1b0

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11-04-2024 23:28

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General

Target

Update_9b2e8e34.dll
Size

69KB
MD5

c189e585a4aea11380082f7c25aef6b8
SHA1

3d84e7bdd40cd41df467830563d0f62779469a1b
SHA256

fc21a125287c3539e11408587bcaa6f3b54784d9d458facbc54994f05d7ef1b0
SHA512

f25cc7078bea3d2ae952a8d7406fb61fa6954d848e9a1f1ac6f5c4ff7151955c10531e7ce6c98baaacc4068ee6c8245a886eca41d0906c0d847d6fcf5158a47b
SSDEEP

768:RvrkZkx7jOx10Io0O99dyyus8GgrFuNtxv4c/HFGKndcHrqzwzvCoQ5w7t:Rv1dj7aO9qyV8Kv4c/HFGLlzKoQi

Score

10^/10

latrodectus loader

Malware Config

Extracted

Family

latrodectus

https://winarkamaps.com/live/

https://stratimasesstr.com/live/

Signatures

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

Detect larodectus Loader variant 2 8 IoCs

loader

resource	yara_rule
behavioral2/memory/3156-0-0x000001C30BA60000-0x000001C30BA74000-memory.dmp	family_latrodectus_v2
behavioral2/memory/3156-1-0x000001C30BA60000-0x000001C30BA74000-memory.dmp	family_latrodectus_v2
behavioral2/memory/4328-6-0x000001A20B2E0000-0x000001A20B2F4000-memory.dmp	family_latrodectus_v2
behavioral2/files/0x000a00000002316b-5.dat	family_latrodectus_v2
behavioral2/memory/3156-7-0x000001C30BA60000-0x000001C30BA74000-memory.dmp	family_latrodectus_v2
behavioral2/memory/4328-9-0x000001A20B2E0000-0x000001A20B2F4000-memory.dmp	family_latrodectus_v2
behavioral2/memory/4328-8-0x000001A20B2E0000-0x000001A20B2F4000-memory.dmp	family_latrodectus_v2
behavioral2/memory/3156-4-0x0000000180000000-0x0000000180014000-memory.dmp	family_latrodectus_v2

Deletes itself 1 IoCs

pid	Process
3156	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4328	rundll32.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3156	rundll32.exe
3156	rundll32.exe
3156	rundll32.exe
3156	rundll32.exe
4328	rundll32.exe
4328	rundll32.exe
4328	rundll32.exe
4328	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3156	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3156 wrote to memory of 4328	3156	rundll32.exe	85
PID 3156 wrote to memory of 4328	3156	rundll32.exe	85

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\Update_9b2e8e34.dll,#1
1⤵
- Deletes itself
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:3156
- C:\Windows\system32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_48abe634.dll", #1
  2⤵
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  PID:4328

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_48abe634.dll

Filesize
69KB

MD5
c189e585a4aea11380082f7c25aef6b8

SHA1
3d84e7bdd40cd41df467830563d0f62779469a1b

SHA256
fc21a125287c3539e11408587bcaa6f3b54784d9d458facbc54994f05d7ef1b0

SHA512
f25cc7078bea3d2ae952a8d7406fb61fa6954d848e9a1f1ac6f5c4ff7151955c10531e7ce6c98baaacc4068ee6c8245a886eca41d0906c0d847d6fcf5158a47b

Download Submit
memory/3156-0-0x000001C30BA60000-0x000001C30BA74000-memory.dmp

Filesize
80KB

Download
memory/3156-1-0x000001C30BA60000-0x000001C30BA74000-memory.dmp

Filesize
80KB

Download
memory/3156-7-0x000001C30BA60000-0x000001C30BA74000-memory.dmp

Filesize
80KB

Download
memory/3156-4-0x0000000180000000-0x0000000180014000-memory.dmp

Filesize
80KB

Download
memory/4328-6-0x000001A20B2E0000-0x000001A20B2F4000-memory.dmp

Filesize
80KB

Download
memory/4328-9-0x000001A20B2E0000-0x000001A20B2F4000-memory.dmp

Filesize
80KB

Download
memory/4328-8-0x000001A20B2E0000-0x000001A20B2F4000-memory.dmp

Filesize
80KB

Download