lumma | 5f01f121168983ab53d3e4e523e344e3a78abdc3ca66cc2be0b54c8f755d8fbb

General

Target

steamerrorreporter.exe
Size

560KB
MD5

dc1681b98049f1df46dd10d7f4c26045
SHA1

4c7f5cf7c00b6139979f8aa41f46979666369224
SHA256

594f9853124e0a81deeaaecb8ec3d192169e7393778214ef6d8f6460450ef080
SHA512

c9a2086326acbab8aba801da0d8bd2aa06951ec7fd7f32a3150f9521498c0b6711552695fbf9d0de7668503630c508bcd68e1d715796ef34f9945035da3fe1ed
SSDEEP

6144:mOzBfFojwX0v4KU9DJZ10Bwr/RvTuZjOULXAO99cER0u+GIIIIIIIhIIIIIIIIIZ:mONFX0v4KU9DJZ16wr/MHVm5a0dw/D

Score

10^/10

lumma discovery stealer

Malware Config

Extracted

Family

lumma

C2

https://aggresiwevommen.cyou/api

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 2736	2808	steamerrorreporter.exe	31

Executes dropped EXE 1 IoCs

pid	Process
2808	steamerrorreporter.exe

Loads dropped DLL 3 IoCs

pid	Process
2680	steamerrorreporter.exe
2808	steamerrorreporter.exe
2808	steamerrorreporter.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	steamerrorreporter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	steamerrorreporter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2680	steamerrorreporter.exe
2808	steamerrorreporter.exe
2808	steamerrorreporter.exe
2736	cmd.exe
2736	cmd.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2808	steamerrorreporter.exe
2736	cmd.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2680 wrote to memory of 2808	2680	steamerrorreporter.exe	30
PID 2680 wrote to memory of 2808	2680	steamerrorreporter.exe	30
PID 2680 wrote to memory of 2808	2680	steamerrorreporter.exe	30
PID 2680 wrote to memory of 2808	2680	steamerrorreporter.exe	30
PID 2808 wrote to memory of 2736	2808	steamerrorreporter.exe	31
PID 2808 wrote to memory of 2736	2808	steamerrorreporter.exe	31
PID 2808 wrote to memory of 2736	2808	steamerrorreporter.exe	31
PID 2808 wrote to memory of 2736	2808	steamerrorreporter.exe	31
PID 2808 wrote to memory of 2736	2808	steamerrorreporter.exe	31
PID 2736 wrote to memory of 2648	2736	cmd.exe	33
PID 2736 wrote to memory of 2648	2736	cmd.exe	33
PID 2736 wrote to memory of 2648	2736	cmd.exe	33
PID 2736 wrote to memory of 2648	2736	cmd.exe	33
PID 2736 wrote to memory of 2648	2736	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\steamerrorreporter.exe
"C:\Users\Admin\AppData\Local\Temp\steamerrorreporter.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Users\Admin\AppData\Roaming\javastream_test1\steamerrorreporter.exe
  C:\Users\Admin\AppData\Roaming\javastream_test1\steamerrorreporter.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2808
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\SysWOW64\cmd.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2736
  - - C:\Windows\SysWOW64\explorer.exe
      C:\Windows\SysWOW64\explorer.exe
      4⤵
      System Location Discovery: System Language Discovery
      PID:2648

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\Temp\36889076

Filesize
1016KB

MD5
95b2c1d35f4a408380298a1e08d12160

SHA1
7798b0ab6ca797a3e7ca0cce2127f93c88730451

SHA256
91bb8a1a4719289effd5660e8941a05911378b8774b0239c4893fe45038de654

SHA512
07ef30e11088d33a192d5cee979fc6185ca8a6aad7640ac2668f8d4ae23c49ed3690c5ad3bd77dd5dfce38bef9dd6b5b83d41d7e8de7cb34b8bb2f17bf3217f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab193D.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar1950.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Roaming\javastream_test1\cochlea.torrent

Filesize
55KB

MD5
495344e71846d9e9f55219dd173b8bd8

SHA1
728a127f624ffd35a65e63f9a82c2afe4c622be1

SHA256
4e07702ab4eb53cb3932dea092905b10bdc0299e0b8b3ac98cf7f213f12ad3c5

SHA512
dd77bec78b5b1d457bda9dd4c44175916fce42934a6a30a4bdfe8561ada05ef00aacd05aa366288baa943b3ef2fc7fd6ac1ea5a617d493072e050fd937fc2435

Download Submit
C:\Users\Admin\AppData\Roaming\javastream_test1\tier0_s.dll

Filesize
341KB

MD5
884013332bf332e4dd8cbf0109a8cfeb

SHA1
c01789d661d465ca29d20174d8f5d29afb1fcffa

SHA256
8ed104f6d7a50f95d515005bf6bd5569cd2dc0107119aa3d91e21dd7ba777e98

SHA512
ea18f416b1295edcfc197c685d56030246097bf95ffffa46f13a16753d05d95a1adb83b5ba0669eaa1049856ea2486ca0fc49507df7d41572de80701e9852f64

Download Submit
C:\Users\Admin\AppData\Roaming\javastream_test1\vstdlib_s.dll

Filesize
519KB

MD5
5c245a8bc2765f02b838db613a2cdb49

SHA1
0952a9edaeebcb4afb1f746cc08e044ac2f2a4e3

SHA256
411fe1b7a84923e849be6844768240da54122f02dbe9611aa18f33e765ad108a

SHA512
ca2235ea5c01b173106cd33ead51ba4877cd85dcf978fe5468ab1b85b173ce2f85d2e846c4bd278cbffebd82b35674f3b2497271c25658536623f1d7aaee0f8f

Download Submit
C:\Users\Admin\AppData\Roaming\javastream_test1\wharf.indd

Filesize
775KB

MD5
3ea96a50807b3a6bb83557d94c8f9086

SHA1
1e3f8ddfd9eef1e3b73d228f3da3ab154514f381

SHA256
f56b4dc0c747d09582debee8014ba7c915b7c0b3888e1022795547a983d83c10

SHA512
31b417c4f21a4fdaacc87df63d63822f99b1d64406b979d11d3c70026c602846470270508c419faf3ed3106654df55be6ee9d8323b0777d1765d92ad8f65cce4

Download Submit
\Users\Admin\AppData\Roaming\javastream_test1\steamerrorreporter.exe

Filesize
560KB

MD5
dc1681b98049f1df46dd10d7f4c26045

SHA1
4c7f5cf7c00b6139979f8aa41f46979666369224

SHA256
594f9853124e0a81deeaaecb8ec3d192169e7393778214ef6d8f6460450ef080

SHA512
c9a2086326acbab8aba801da0d8bd2aa06951ec7fd7f32a3150f9521498c0b6711552695fbf9d0de7668503630c508bcd68e1d715796ef34f9945035da3fe1ed

Download Submit
memory/2648-67-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2648-32-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2648-31-0x0000000077800000-0x00000000779A9000-memory.dmp

Filesize
1.7MB

Download
memory/2680-1-0x0000000077800000-0x00000000779A9000-memory.dmp

Filesize
1.7MB

Download
memory/2680-0-0x0000000074E60000-0x0000000074FD4000-memory.dmp

Filesize
1.5MB

Download
memory/2736-27-0x0000000074F00000-0x0000000075074000-memory.dmp

Filesize
1.5MB

Download
memory/2736-25-0x0000000077800000-0x00000000779A9000-memory.dmp

Filesize
1.7MB

Download
memory/2736-23-0x0000000074F00000-0x0000000075074000-memory.dmp

Filesize
1.5MB

Download
memory/2736-28-0x0000000074F00000-0x0000000075074000-memory.dmp

Filesize
1.5MB

Download
memory/2736-30-0x0000000074F00000-0x0000000075074000-memory.dmp

Filesize
1.5MB

Download
memory/2808-21-0x0000000074F00000-0x0000000075074000-memory.dmp

Filesize
1.5MB

Download
memory/2808-20-0x0000000074F00000-0x0000000075074000-memory.dmp

Filesize
1.5MB

Download
memory/2808-19-0x0000000074F13000-0x0000000074F15000-memory.dmp

Filesize
8KB

Download
memory/2808-18-0x0000000077800000-0x00000000779A9000-memory.dmp

Filesize
1.7MB

Download
memory/2808-17-0x0000000074F00000-0x0000000075074000-memory.dmp

Filesize
1.5MB

Download

Analysis

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