lumma | a26dae1a0da4d8849489b49e037bfc66d1efe72182a35ecb99d5d8e41fbf4b17

Analysis

max time kernel
96s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-12-2024 15:24

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General

Target

procexp.exe
Size

5.2MB
MD5

4cd37c393016ec28159c17dc3997c0b3
SHA1

6ee17584fdd59ea2fc2c3edcac56f9945a4e5148
SHA256

a26dae1a0da4d8849489b49e037bfc66d1efe72182a35ecb99d5d8e41fbf4b17
SHA512

05658e37284bf3619a2aa407d54a1a9de65e498a4cd8f6c90b88eeab1130e119d8cba9e29206c4ad6ea340894db23c64d1cf88f9f9fb4668b17414635458f23b
SSDEEP

98304:5hH/750kD6/qbDSXUx/ZZdx3+kyR9xPhCtArzQQujtKKIdJdOBXai4MbU7KPv:51dTSqA+DjSfEtsGtKKIdr6qiBo7s

Score

10^/10

lumma vidar credential_access discovery stealer

Malware Config

Extracted

Family

lumma

Signatures

Detect Vidar Stealer 4 IoCs

stealer

resource	yara_rule
behavioral2/memory/4864-20-0x0000000000400000-0x0000000000639000-memory.dmp	family_vidar_v7
behavioral2/memory/4864-22-0x0000000000400000-0x0000000000639000-memory.dmp	family_vidar_v7
behavioral2/memory/4864-34-0x0000000000400000-0x0000000000639000-memory.dmp	family_vidar_v7
behavioral2/memory/4864-35-0x0000000000400000-0x0000000000639000-memory.dmp	family_vidar_v7

Lumma Stealer, LummaC
Lumma or LummaC is an infostealer written in C++ first seen in August 2022.
stealer lumma
Lumma family
lumma
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Vidar family
vidar
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2432 set thread context of 2220	2432	procexp.exe	92
PID 2432 set thread context of 4864	2432	procexp.exe	102
PID 2220 set thread context of 3736	2220	AddInProcess32.exe	103

System Location Discovery: System Language Discovery 1 TTPs 6 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	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	procexp.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	AddInProcess32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	AddInProcess32.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3016	timeout.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2432	procexp.exe
2432	procexp.exe
2432	procexp.exe
2220	AddInProcess32.exe
2220	AddInProcess32.exe
2220	AddInProcess32.exe
4864	AddInProcess32.exe
4864	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2432	procexp.exe
Token: SeDebugPrivilege	2220	AddInProcess32.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2220	2432	procexp.exe	92
PID 2432 wrote to memory of 2220	2432	procexp.exe	92
PID 2432 wrote to memory of 2220	2432	procexp.exe	92
PID 2432 wrote to memory of 2220	2432	procexp.exe	92
PID 2432 wrote to memory of 2220	2432	procexp.exe	92
PID 2432 wrote to memory of 2220	2432	procexp.exe	92
PID 2432 wrote to memory of 2220	2432	procexp.exe	92
PID 2432 wrote to memory of 2220	2432	procexp.exe	92
PID 2432 wrote to memory of 4864	2432	procexp.exe	102
PID 2432 wrote to memory of 4864	2432	procexp.exe	102
PID 2432 wrote to memory of 4864	2432	procexp.exe	102
PID 2432 wrote to memory of 4864	2432	procexp.exe	102
PID 2432 wrote to memory of 4864	2432	procexp.exe	102
PID 2432 wrote to memory of 4864	2432	procexp.exe	102
PID 2432 wrote to memory of 4864	2432	procexp.exe	102
PID 2432 wrote to memory of 4864	2432	procexp.exe	102
PID 2432 wrote to memory of 4864	2432	procexp.exe	102
PID 2432 wrote to memory of 4864	2432	procexp.exe	102
PID 2220 wrote to memory of 3736	2220	AddInProcess32.exe	103
PID 2220 wrote to memory of 3736	2220	AddInProcess32.exe	103
PID 2220 wrote to memory of 3736	2220	AddInProcess32.exe	103
PID 2220 wrote to memory of 3736	2220	AddInProcess32.exe	103
PID 2220 wrote to memory of 3736	2220	AddInProcess32.exe	103
PID 2220 wrote to memory of 3736	2220	AddInProcess32.exe	103
PID 2220 wrote to memory of 3736	2220	AddInProcess32.exe	103
PID 2220 wrote to memory of 3736	2220	AddInProcess32.exe	103
PID 2220 wrote to memory of 3736	2220	AddInProcess32.exe	103
PID 4864 wrote to memory of 1376	4864	AddInProcess32.exe	107
PID 4864 wrote to memory of 1376	4864	AddInProcess32.exe	107
PID 4864 wrote to memory of 1376	4864	AddInProcess32.exe	107
PID 1376 wrote to memory of 3016	1376	cmd.exe	109
PID 1376 wrote to memory of 3016	1376	cmd.exe	109
PID 1376 wrote to memory of 3016	1376	cmd.exe	109

C:\Users\Admin\AppData\Local\Temp\procexp.exe
"C:\Users\Admin\AppData\Local\Temp\procexp.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2220
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3736
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4864
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe" & rd /s /q "C:\ProgramData\2DTJEUS2DTRQ" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1376
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:3016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

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/2220-12-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/2220-33-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/2220-19-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/2220-17-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/2220-16-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/2220-15-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/2220-13-0x0000000000400000-0x00000000004A2000-memory.dmp

Filesize
648KB

Download
memory/2432-14-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/2432-18-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/2432-9-0x00000000068D0000-0x00000000068D6000-memory.dmp

Filesize
24KB

Download
memory/2432-10-0x000000007477E000-0x000000007477F000-memory.dmp

Filesize
4KB

Download
memory/2432-11-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/2432-7-0x0000000005170000-0x000000000517A000-memory.dmp

Filesize
40KB

Download
memory/2432-6-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/2432-0-0x000000007477E000-0x000000007477F000-memory.dmp

Filesize
4KB

Download
memory/2432-5-0x0000000004ED0000-0x0000000004F12000-memory.dmp

Filesize
264KB

Download
memory/2432-3-0x0000000005580000-0x0000000005B24000-memory.dmp

Filesize
5.6MB

Download
memory/2432-4-0x0000000005070000-0x0000000005102000-memory.dmp

Filesize
584KB

Download
memory/2432-8-0x00000000068A0000-0x00000000068BA000-memory.dmp

Filesize
104KB

Download
memory/2432-2-0x0000000004F30000-0x0000000004FCC000-memory.dmp

Filesize
624KB

Download
memory/2432-1-0x0000000000B60000-0x00000000010A6000-memory.dmp

Filesize
5.3MB

Download
memory/2432-23-0x0000000074770000-0x0000000074F20000-memory.dmp

Filesize
7.7MB

Download
memory/3736-30-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3736-31-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4864-22-0x0000000000400000-0x0000000000639000-memory.dmp

Filesize
2.2MB

Download
memory/4864-20-0x0000000000400000-0x0000000000639000-memory.dmp

Filesize
2.2MB

Download
memory/4864-34-0x0000000000400000-0x0000000000639000-memory.dmp

Filesize
2.2MB

Download
memory/4864-35-0x0000000000400000-0x0000000000639000-memory.dmp

Filesize
2.2MB

Download