lumma | a8149713aacc192a0fa06365219e3616d98cc510e7d592c7dc07a714dda97f63

General

Target

Bootstrapper-x64.zip
Size

19.7MB
MD5

3f9dfe9d9b7deacc5f94a4e0628a12aa
SHA1

135930e52fa93c99a482f5d2f6bdabff99e07401
SHA256

a8149713aacc192a0fa06365219e3616d98cc510e7d592c7dc07a714dda97f63
SHA512

8cb1fee3bf7cc964438d3becc53f578b3492d7ac92f1e7b3e74a685e0f17c645e709659df285804b95affd89308133cdd83c6268a18ba56999eeaf2703d32c03
SSDEEP

393216:dbtcA2Vfwn7vvWrY+gwGXGR9n01nC9q2iNRMtbkYxVRzj2JGLxo:0pf8GJ3aC9q2iNR8FVFjbLxo

Score

10^/10

lumma discovery stealer

Malware Config

Extracted

Family

lumma

C2

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

https://fastysticke.sbs/api

Signatures

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

Executes dropped EXE 2 IoCs

pid	Process
2920	Bootstrapper.exe
3820	Bootstrapper.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3928	2920	WerFault.exe	83
2360	3820	WerFault.exe	89

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	Bootstrapper.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Bootstrapper.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	7zFM.exe
Key created	\REGISTRY\USER\S-1-5-21-3587106988-279496464-3440778474-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	7zFM.exe

Opens file in notepad (likely ransom note) 2 IoCs

ransomware

pid	Process
2956	NOTEPAD.EXE
2656	NOTEPAD.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3728	7zFM.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeRestorePrivilege	3728	7zFM.exe
Token: 35	3728	7zFM.exe
Token: SeSecurityPrivilege	3728	7zFM.exe
Token: SeSecurityPrivilege	3728	7zFM.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
3728	7zFM.exe
3728	7zFM.exe
3728	7zFM.exe

C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Bootstrapper-x64.zip"
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:3728

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\README.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:2956

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4256

C:\Users\Admin\Desktop\Bootstrapper\Bootstrapper.exe
"C:\Users\Admin\Desktop\Bootstrapper\Bootstrapper.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2920 -s 1320
  2⤵
  - Program crash
  PID:3928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2920 -ip 2920
1⤵
PID:2344

C:\Users\Admin\Desktop\Bootstrapper\Bootstrapper.exe
"C:\Users\Admin\Desktop\Bootstrapper\Bootstrapper.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3820 -s 1308
  2⤵
  - Program crash
  PID:2360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3820 -ip 3820
1⤵
PID:3972

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\Bootstrapper\scripts\config.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:2656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\iconcache_idx.db

Filesize
14KB

MD5
2aba9c513f3ef55886793c9105c8589a

SHA1
b898a950a38731f46c0bea341cca6c82c3f365ea

SHA256
5268289f7c6ca304960a400f76362f4a9fee85257cce7746409cca8e0be2cdf3

SHA512
68b21a36aa0664609769ee6234da3b0f5adf12794fb2093b6bf84db7347cf6532d1b417aa460921451a84a931c434cb267a78e4741bed29292b688be19245ad2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\iconcache_idx.db

Filesize
14KB

MD5
ed2343039779cc7cdc8a9277a072e760

SHA1
9699bed14d54301c5da801384f99274fd4b83f5c

SHA256
cac56aec58c16a817e8aaa556ecc209e14098d23d5fa65949c46c43274ea0af6

SHA512
ae9bf172e10b9678f04e94ea7e47b5e60ecc60752124ed7ed686c54a4edc25fc72c662445c1ae57c0de851cf2ccef3e33fb8847d1e84e064e96b1a0c24a5397d

Download Submit
C:\Users\Admin\Desktop\Bootstrapper\Bootstrapper.exe

Filesize
468KB

MD5
280e5a88a0ca4780526770ac5124cfb2

SHA1
439586840ced994d6d08a55bb5e2f1543a8a519c

SHA256
c1c3b8037092ff7825d6b8bbdff10481c5182911787b7c6d4ecebaabf316b6fb

SHA512
70cbd4d537aab89fdf5df0be4e3984a317c0bb4e9fb3619a54c3e44f8dc59969e4ffb5378e9a14137bea4a412baa500f2bbe7b8c1ddbbceab1506e564163535c

Download Submit
C:\Users\Admin\Desktop\Bootstrapper\scripts\config.txt

Filesize
220KB

MD5
96c673c9e9dedefec5fd5e27284e4f29

SHA1
1b5865f8998749a1fd61f62e6357d19dedcc9a2c

SHA256
d92b9e01e24935e1cc6144734c0b39379edef1e3c06aedbd547dc304e7334d77

SHA512
4ac805e8528f1003911960ce317150d186022a30dc31c479a54e1f6adbbf9cbce882da4b46f8cf0991c9e07fb4239f970d07c1538e4d16c79b560b5b272e5b83

Download Submit
C:\Users\Admin\Desktop\README.txt

Filesize
124B

MD5
3b4bb14e17a60137e3e93c7adac41bcb

SHA1
de09ed28df13d9325e816d0c656582a929077876

SHA256
bde691c014e6a2527d5ef783d065edf14bcfe83b20c1ff97c22d280633b5287e

SHA512
ec76f39b6ab4c6f822a1777c78212d659d86760458da9f050fba48bef12cba054573f25fc96278b49cdb163bed41a157123c01d3897226584cd1b57a653dfb50

Download Submit
memory/2920-40-0x0000000000400000-0x00000000004E1000-memory.dmp

Filesize
900KB

Download
memory/3820-43-0x0000000000400000-0x00000000004E1000-memory.dmp

Filesize
900KB

Download

Analysis

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