lumma | 4aabc5c522ecef9200e1da99e5e747bc134955a80f712f0e5a42e048974fc65b

Analysis

max time kernel
94s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2025, 16:52

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General

Target

External2.4.exe
Size

519KB
MD5

8941182a6d0c454bf679b27fcb99f327
SHA1

de76d54d58b53355bbfdcb942e0f5262bdc25091
SHA256

4aabc5c522ecef9200e1da99e5e747bc134955a80f712f0e5a42e048974fc65b
SHA512

8143dc1ade3606e7fda8314107098303e3ac0cbebc670992409859af29dfd5da9f6d73fdb87ca7e0fa5e05a2e6ff20051653691291137690efc4dea3af4e88a7
SSDEEP

12288:OtPYLwhHJ6mhUvkxv3xUPEaSAq5YPn76+5NHPH:O2Lwr2kjAEaSAPP76+5lH

Score

10^/10

lumma discovery stealer

Malware Config

Extracted

Family

lumma

https://toppyneedus.biz/api

Signatures

Lumma Stealer, LummaC
Lumma or LummaC is an infostealer written in C++ first seen in August 2022.
stealer lumma
Lumma family
lumma

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 732	2720	External2.4.exe	83

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4884	2720	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 2 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	External2.4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	External2.4.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2720 wrote to memory of 732	2720	External2.4.exe	83
PID 2720 wrote to memory of 732	2720	External2.4.exe	83
PID 2720 wrote to memory of 732	2720	External2.4.exe	83
PID 2720 wrote to memory of 732	2720	External2.4.exe	83
PID 2720 wrote to memory of 732	2720	External2.4.exe	83
PID 2720 wrote to memory of 732	2720	External2.4.exe	83
PID 2720 wrote to memory of 732	2720	External2.4.exe	83
PID 2720 wrote to memory of 732	2720	External2.4.exe	83
PID 2720 wrote to memory of 732	2720	External2.4.exe	83

C:\Users\Admin\AppData\Local\Temp\External2.4.exe
"C:\Users\Admin\AppData\Local\Temp\External2.4.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2720
- C:\Users\Admin\AppData\Local\Temp\External2.4.exe
  "C:\Users\Admin\AppData\Local\Temp\External2.4.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2720 -s 824
  2⤵
  - Program crash
  PID:4884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2720 -ip 2720
1⤵
PID:3948

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/732-4-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/732-6-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/732-8-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2720-0-0x0000000074F3E000-0x0000000074F3F000-memory.dmp

Filesize
4KB

Download
memory/2720-1-0x00000000003E0000-0x000000000046A000-memory.dmp

Filesize
552KB

Download
memory/2720-2-0x00000000053B0000-0x0000000005954000-memory.dmp

Filesize
5.6MB

Download
memory/2720-7-0x0000000074F30000-0x00000000756E0000-memory.dmp

Filesize
7.7MB

Download