latrodectus | 8acb675710a2906506098266edddd3895c33ec07307035f7e92d2dda2613d3d6

Analysis

max time kernel
138s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
submitted
31/08/2024, 12:21

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General

Target
UpdaterTag.dll
Size 74KB
Sample240831-pjt4dashmg
SHA256 8acb675710a2906506098266edddd3895c33ec07307035f7e92d2dda2613d3d6
MD5 972da9469d08afb5028f7c5aa70e9ac9
SHA1 83e00c329d98f4d9747e7c361c5eabaaeff7ee87
SHA512 077aab2448755bb25ff5242fdb0a6e88e1145a3e93429a80a04fcc9a9c238e9b8721a3a78bb81770e2a8af97d36b9c5e2a3078a6bb08261d0b80f3a094a0a784
SSDEEP 1536:U4zhHuRqOoGc2WsV/bWM5wpokf8mwrl/Jk:U4zhHuRooWM5wBkmwrJJ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

latrodectus loader

Malware Config

Extracted

Family

latrodectus

https://isomicrotich.com/test/
https://rilomenifis.com/test/

Signatures

Detects Latrodectus 2 IoCs

Detects Latrodectus v1.4.

resource	yara_rule
behavioral2/files/0x0007000000023612-3.dat	family_latrodectus_1_4
behavioral2/memory/1200-1-0x00007FF9E5720000-0x00007FF9E5736000-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
1200	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
3960	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1200	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 3960	1200	rundll32.exe	93
PID 1200 wrote to memory of 3960	1200	rundll32.exe	93

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\UpdaterTag.dll,#1
1⤵
- Deletes itself
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\system32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_31db8e5f.dll", #1
  2⤵
  - Loads dropped DLL
  PID:3960

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4768,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:8
1⤵
PID:2196

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

Update_31db8e5f.dll

Path C:\Users\Admin\AppData\Roaming\Custom_update\Update_31db8e5f.dll
Size 74KB
SHA256 8acb675710a2906506098266edddd3895c33ec07307035f7e92d2dda2613d3d6
MD5 972da9469d08afb5028f7c5aa70e9ac9
SHA1 83e00c329d98f4d9747e7c361c5eabaaeff7ee87
SHA512 077aab2448755bb25ff5242fdb0a6e88e1145a3e93429a80a04fcc9a9c238e9b8721a3a78bb81770e2a8af97d36b9c5e2a3078a6bb08261d0b80f3a094a0a784
SSDEEP 1536:U4zhHuRqOoGc2WsV/bWM5wpokf8mwrl/Jk:U4zhHuRooWM5wBkmwrJJ
MD5 SHA1 SHA512 SSDEEP

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memory/1200-1-0x00007FF9E5720000-0x00007FF9E5736000-memory.dmp

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