latrodectus | 25df81bebae736bf7e5cc42ef18b4756d1de8cd2cd4f1e508b6bf5108bac69e7

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20250207-en
resource tags

arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
submitted
09/02/2025, 02:27

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General

Target

UpdaterTag.dll
Size

72KB
MD5

4d3511cedaddff8cdd991c1bcbbbf274
SHA1

9a6dcaa5d0a6bc5dc0e525d8495f81776c89f457
SHA256

25df81bebae736bf7e5cc42ef18b4756d1de8cd2cd4f1e508b6bf5108bac69e7
SHA512

3f201909ec716f5dd64df459d760ac44f9c2b14bec1a91ef68882c1817ed29564028bfc829be8998490f583895eb7f93a2b600c8472cd4781aaf1aa34a165918
SSDEEP

768:Vz7vRTYS4Oi5ONdWJ7HRCRuVnjhaQu7SDqRefml4I4QDqauXj57CHf8Idi+a7dHU:Vzh7eO6hHRCwhBfml4I6z5If8INaJ0

Score

10^/10

latrodectus discovery loader

Malware Config

Extracted

Family

latrodectus

Version

1.4

https://apworsindos.com/test/

https://reminasolirol.com/test/

Attributes

group
Mimikast
user_agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Tob 1.1)

aes.hex

Signatures

Detects Latrodectus 2 IoCs

Detects Latrodectus v1.4.

resource	yara_rule
behavioral2/memory/2976-1-0x00007FFC6F2A0000-0x00007FFC6F2B6000-memory.dmp	family_latrodectus_1_4
behavioral2/files/0x000b000000023cd6-2.dat	family_latrodectus_1_4

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
46	1748	Process not Found

Deletes itself 1 IoCs

pid	Process
2976	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1188	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3632	MicrosoftEdgeUpdate.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2976	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2976 wrote to memory of 1188	2976	rundll32.exe	86
PID 2976 wrote to memory of 1188	2976	rundll32.exe	86

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:2976
- C:\Windows\system32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_5dd2300b.dll", #1
  2⤵
  - Loads dropped DLL
  PID:1188

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5ODUiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODQ0NDQzNjAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MjY3OTgyMjI1Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Custom_update\Update_5dd2300b.dll

Filesize
72KB

MD5
4d3511cedaddff8cdd991c1bcbbbf274

SHA1
9a6dcaa5d0a6bc5dc0e525d8495f81776c89f457

SHA256
25df81bebae736bf7e5cc42ef18b4756d1de8cd2cd4f1e508b6bf5108bac69e7

SHA512
3f201909ec716f5dd64df459d760ac44f9c2b14bec1a91ef68882c1817ed29564028bfc829be8998490f583895eb7f93a2b600c8472cd4781aaf1aa34a165918

Download Submit
memory/2976-1-0x00007FFC6F2A0000-0x00007FFC6F2B6000-memory.dmp

Filesize
88KB

Download