lumma | 4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
06-10-2024 13:15

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General

Target

4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe
Size

580KB
MD5

bc1acc2b1020f96cfdda7ff69a87bbb1
SHA1

0187652eeac3d058c419fcc9e060d8bd5e4235ed
SHA256

4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c
SHA512

0dc9e760b0bb8a0a641d237de6b00cfa7df047fe86012c2a3ca6424e60285ce6336b76d6322af9b658c0450b77cf79e40d574d447d0126fad0da8e92561548bb
SSDEEP

12288:c2qapAlfgoXFbrI3/oTBrESjdWKFLcXsIS8TC1apvJJUHKPHo24MdIisEO:Kawfg//8HjdWKFAXL7Satwq/hWzt

Score

10^/10

lumma vidar credential_access discovery spyware stealer

Malware Config

Extracted

Family

vidar

http://proxy.johnmccrea.com/

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 16 IoCs

stealer

resource	yara_rule
behavioral1/memory/2276-10-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-6-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-13-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-5-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-4-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-9-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-14-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-15-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-32-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-33-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-62-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-63-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-70-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-71-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-72-0x0000000000400000-0x0000000000676000-memory.dmp	family_vidar_v7
behavioral1/memory/2276-132-0x0000000000400000-0x0000000000676000-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

Executes dropped EXE 1 IoCs

pid	Process
2708	KEGCBFCBFB.exe

Loads dropped DLL 5 IoCs

pid	Process
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2520 set thread context of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2708 set thread context of 3004	2708	KEGCBFCBFB.exe	36

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2348	2520	WerFault.exe	29

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	KEGCBFCBFB.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.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	MSBuild.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MSBuild.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2684	timeout.exe

Suspicious behavior: EnumeratesProcesses 54 IoCs

pid	Process
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe
2276	MSBuild.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2520 wrote to memory of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2520 wrote to memory of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2520 wrote to memory of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2520 wrote to memory of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2520 wrote to memory of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2520 wrote to memory of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2520 wrote to memory of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2520 wrote to memory of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2520 wrote to memory of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2520 wrote to memory of 2276	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	30
PID 2520 wrote to memory of 2348	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	31
PID 2520 wrote to memory of 2348	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	31
PID 2520 wrote to memory of 2348	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	31
PID 2520 wrote to memory of 2348	2520	4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe	31
PID 2276 wrote to memory of 2708	2276	MSBuild.exe	35
PID 2276 wrote to memory of 2708	2276	MSBuild.exe	35
PID 2276 wrote to memory of 2708	2276	MSBuild.exe	35
PID 2276 wrote to memory of 2708	2276	MSBuild.exe	35
PID 2708 wrote to memory of 3004	2708	KEGCBFCBFB.exe	36
PID 2708 wrote to memory of 3004	2708	KEGCBFCBFB.exe	36
PID 2708 wrote to memory of 3004	2708	KEGCBFCBFB.exe	36
PID 2708 wrote to memory of 3004	2708	KEGCBFCBFB.exe	36
PID 2708 wrote to memory of 3004	2708	KEGCBFCBFB.exe	36
PID 2708 wrote to memory of 3004	2708	KEGCBFCBFB.exe	36
PID 2708 wrote to memory of 3004	2708	KEGCBFCBFB.exe	36
PID 2708 wrote to memory of 3004	2708	KEGCBFCBFB.exe	36
PID 2708 wrote to memory of 3004	2708	KEGCBFCBFB.exe	36
PID 2708 wrote to memory of 3004	2708	KEGCBFCBFB.exe	36
PID 2276 wrote to memory of 2628	2276	MSBuild.exe	37
PID 2276 wrote to memory of 2628	2276	MSBuild.exe	37
PID 2276 wrote to memory of 2628	2276	MSBuild.exe	37
PID 2276 wrote to memory of 2628	2276	MSBuild.exe	37
PID 2628 wrote to memory of 2684	2628	cmd.exe	39
PID 2628 wrote to memory of 2684	2628	cmd.exe	39
PID 2628 wrote to memory of 2684	2628	cmd.exe	39
PID 2628 wrote to memory of 2684	2628	cmd.exe	39

C:\Users\Admin\AppData\Local\Temp\4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe
"C:\Users\Admin\AppData\Local\Temp\4c283c77fa238d5b1bb0ea1a881fe20a8d784fe1b7ab95032ac0981efda6fe6c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2276
- - C:\ProgramData\KEGCBFCBFB.exe
    "C:\ProgramData\KEGCBFCBFB.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2708
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:3004
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\CFHCGHJDBFII" & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2628
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 10
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:2684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 52
  2⤵
  - Program crash
  PID:2348

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

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:\Users\Admin\AppData\Local\Temp\Cab1354.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar1376.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
\ProgramData\KEGCBFCBFB.exe

Filesize
547KB

MD5
7e0518a1ebb4ac7ae6b2e833acdced20

SHA1
cb84bd346dbe556aeec635cd6e4fe8c3a28b0ba7

SHA256
5938cd354f86ee5c58349a995dac3bcfd593bf5920fe46d080f13fd93a65beb2

SHA512
c7e00fbd57be8b44f6761f1d471b931a99c01152e4909ae55c8eb9dae04374268779356d33e4a2052eb6c1e8dab8696b0797fff759502152202751c066bb18ed

Download Submit
\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
memory/2276-62-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-70-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-4-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-3-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-2-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-9-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-14-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-15-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-17-0x000000001B5F0000-0x000000001B84F000-memory.dmp

Filesize
2.4MB

Download
memory/2276-32-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-33-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-7-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2276-13-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-132-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-63-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-5-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-71-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-72-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-6-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-1-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2276-10-0x0000000000400000-0x0000000000676000-memory.dmp

Filesize
2.5MB

Download
memory/2520-0-0x00000000011BC000-0x00000000011BE000-memory.dmp

Filesize
8KB

Download
memory/2708-87-0x00000000009F4000-0x00000000009F5000-memory.dmp

Filesize
4KB

Download
memory/3004-94-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/3004-96-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/3004-97-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/3004-93-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/3004-92-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/3004-91-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/3004-90-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/3004-89-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/3004-88-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download