latrodectus | 6ca8800c6d3cd512e7ae72e1262408f7e00c1df0e50fd468b63d09c52835824e

Analysis

max time kernel
120s
max time network
118s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
06-02-2025 19:31

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General

Target

UpdaterTag.dll
Size

72KB
MD5

bcdf04fb5b921b898389482400e39187
SHA1

f5284c8a66b7b5202547515fe34c3c5294620dd5
SHA256

6ca8800c6d3cd512e7ae72e1262408f7e00c1df0e50fd468b63d09c52835824e
SHA512

0b2100b57bb438c9aecdcb27f345614e89ba13a8271474b834af67afae6b316c4df93ad55ecf4b44b96e1c08a45ad6609313b84ef75af6530843a1ca7574c758
SSDEEP

1536:Tzh7eO6hHRCWqBfml4I6z5If8IM4Ny9KW:Tzh7WZIWWfmlAIkIM4YKW

Score

10^/10

latrodectus loader

Malware Config

Extracted

Family

latrodectus

Version

1.4

https://vivaforevew.com/test/

https://wersogkiwgow.com/test/

Attributes

group
Omega
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
behavioral1/files/0x00060000000193b5-1.dat	family_latrodectus_1_4
behavioral1/memory/1604-6-0x000007FEFB3A0000-0x000007FEFB3B6000-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
1604	rundll32.exe

Loads dropped DLL 8 IoCs

pid	Process
2404	rundll32.exe
2404	rundll32.exe
2404	rundll32.exe
2404	rundll32.exe
2792	rundll32.exe
2792	rundll32.exe
2792	rundll32.exe
2792	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1604	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 2404	1604	rundll32.exe	31
PID 1604 wrote to memory of 2404	1604	rundll32.exe	31
PID 1604 wrote to memory of 2404	1604	rundll32.exe	31
PID 1604 wrote to memory of 1980	1604	rundll32.exe	32
PID 1604 wrote to memory of 1980	1604	rundll32.exe	32
PID 1604 wrote to memory of 1980	1604	rundll32.exe	32
PID 2844 wrote to memory of 2792	2844	taskeng.exe	34
PID 2844 wrote to memory of 2792	2844	taskeng.exe	34
PID 2844 wrote to memory of 2792	2844	taskeng.exe	34

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:1604
- C:\Windows\system32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_501da957.dll", #1
  2⤵
  - Loads dropped DLL
  PID:2404
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1604 -s 308
  2⤵
  PID:1980

C:\Windows\system32\taskeng.exe
taskeng.exe {6662B7B4-BDCA-43EF-8C60-B39B988E61E0} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\system32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_501da957.dll", #1
  2⤵
  - Loads dropped DLL
  PID:2792

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_501da957.dll

Filesize
72KB

MD5
bcdf04fb5b921b898389482400e39187

SHA1
f5284c8a66b7b5202547515fe34c3c5294620dd5

SHA256
6ca8800c6d3cd512e7ae72e1262408f7e00c1df0e50fd468b63d09c52835824e

SHA512
0b2100b57bb438c9aecdcb27f345614e89ba13a8271474b834af67afae6b316c4df93ad55ecf4b44b96e1c08a45ad6609313b84ef75af6530843a1ca7574c758

Download Submit
memory/1604-6-0x000007FEFB3A0000-0x000007FEFB3B6000-memory.dmp

Filesize
88KB

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