lumma | 4da047e7133eebf2b2220d7329fac13094a46b0b430c4e7870da39c813efdae2

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03-10-2024 08:33

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General

Target

file.exe
Size

404KB
MD5

5af7d57744592ed62c6ecde2348d721a
SHA1

1a3aaecedbf90f300a33c0b68314cf9b4e5084fe
SHA256

4da047e7133eebf2b2220d7329fac13094a46b0b430c4e7870da39c813efdae2
SHA512

1033e908b43ef9821ee63bb29ea4a7820e26ce0779627b1bab1f0c0dca5c8040bdfabdb3a9ae60725ae6a4de6ab6c0b757444349afa5fae72df872deb0bdf28b
SSDEEP

12288:+1nfasvb+wZd4+/2ghnEOBe74Ege5je2xk:+1nfVjnd4UvhnGpjje2xk

Score

10^/10

lumma vidar b74ef0d8ce56e494b0d83e1d5be9dbeb credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

Version

Botnet

b74ef0d8ce56e494b0d83e1d5be9dbeb

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Extracted

Family

lumma

Signatures

Detect Vidar Stealer 13 IoCs

stealer

resource	yara_rule
behavioral2/memory/5080-4-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-9-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-7-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-19-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-20-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-36-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-37-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-53-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-54-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-78-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-79-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-86-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral2/memory/5080-87-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7

Lumma Stealer, LummaC
Lumma or LummaC is an infostealer written in C++ first seen in August 2022.
stealer lumma
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	RegAsm.exe

Executes dropped EXE 1 IoCs

pid	Process
2592	KKFCFBKFCF.exe

Loads dropped DLL 2 IoCs

pid	Process
5080	RegAsm.exe
5080	RegAsm.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3276 set thread context of 5080	3276	file.exe	82
PID 2592 set thread context of 380	2592	KKFCFBKFCF.exe	94

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	KKFCFBKFCF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1640	timeout.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
5080	RegAsm.exe
5080	RegAsm.exe
5080	RegAsm.exe
5080	RegAsm.exe
5080	RegAsm.exe
5080	RegAsm.exe
5080	RegAsm.exe
5080	RegAsm.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3276 wrote to memory of 5080	3276	file.exe	82
PID 3276 wrote to memory of 5080	3276	file.exe	82
PID 3276 wrote to memory of 5080	3276	file.exe	82
PID 3276 wrote to memory of 5080	3276	file.exe	82
PID 3276 wrote to memory of 5080	3276	file.exe	82
PID 3276 wrote to memory of 5080	3276	file.exe	82
PID 3276 wrote to memory of 5080	3276	file.exe	82
PID 3276 wrote to memory of 5080	3276	file.exe	82
PID 3276 wrote to memory of 5080	3276	file.exe	82
PID 3276 wrote to memory of 5080	3276	file.exe	82
PID 5080 wrote to memory of 2592	5080	RegAsm.exe	91
PID 5080 wrote to memory of 2592	5080	RegAsm.exe	91
PID 5080 wrote to memory of 2592	5080	RegAsm.exe	91
PID 2592 wrote to memory of 380	2592	KKFCFBKFCF.exe	94
PID 2592 wrote to memory of 380	2592	KKFCFBKFCF.exe	94
PID 2592 wrote to memory of 380	2592	KKFCFBKFCF.exe	94
PID 2592 wrote to memory of 380	2592	KKFCFBKFCF.exe	94
PID 2592 wrote to memory of 380	2592	KKFCFBKFCF.exe	94
PID 2592 wrote to memory of 380	2592	KKFCFBKFCF.exe	94
PID 2592 wrote to memory of 380	2592	KKFCFBKFCF.exe	94
PID 2592 wrote to memory of 380	2592	KKFCFBKFCF.exe	94
PID 2592 wrote to memory of 380	2592	KKFCFBKFCF.exe	94
PID 5080 wrote to memory of 3764	5080	RegAsm.exe	95
PID 5080 wrote to memory of 3764	5080	RegAsm.exe	95
PID 5080 wrote to memory of 3764	5080	RegAsm.exe	95
PID 3764 wrote to memory of 1640	3764	cmd.exe	97
PID 3764 wrote to memory of 1640	3764	cmd.exe	97
PID 3764 wrote to memory of 1640	3764	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3276
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5080
- - C:\ProgramData\KKFCFBKFCF.exe
    "C:\ProgramData\KKFCFBKFCF.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2592
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:380
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\GHIDHCBGDHJK" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3764
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\KKFCFBKFCF.exe

Filesize
372KB

MD5
af128bfc419f80e93a0b05f0f44ca5d1

SHA1
963f19df35ae7c829c2478b4916b2013bcf3f8e8

SHA256
6196138ed6e6973b09dec10e0d628ed6f4a5ab4b8ec5c7fcf093b972e87d75d6

SHA512
c893bd2301ff0b71ce51e3b6a361a31405bfc27fcec49001f8cacb7d9997c9517073bc96d9fd24dd7979cfa402163247a3d87a291f7868deba3424fac8d3007c

Download Submit
C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/380-108-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/380-105-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/380-102-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/2592-98-0x000000007331E000-0x000000007331F000-memory.dmp

Filesize
4KB

Download
memory/2592-109-0x0000000073310000-0x0000000073AC0000-memory.dmp

Filesize
7.7MB

Download
memory/2592-107-0x0000000073310000-0x0000000073AC0000-memory.dmp

Filesize
7.7MB

Download
memory/2592-100-0x0000000073310000-0x0000000073AC0000-memory.dmp

Filesize
7.7MB

Download
memory/2592-99-0x0000000000EC0000-0x0000000000F20000-memory.dmp

Filesize
384KB

Download
memory/3276-12-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3276-1-0x0000000000D90000-0x0000000000DF8000-memory.dmp

Filesize
416KB

Download
memory/3276-2-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3276-0-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/5080-53-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-54-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-79-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-86-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-87-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-9-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-7-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-78-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-19-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-4-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-37-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-36-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/5080-21-0x00000000223D0000-0x000000002262F000-memory.dmp

Filesize
2.4MB

Download
memory/5080-20-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download