lumma | cb42390c2f309c26fdd5e47563233afc73fd866af234b9838626440ea62ce7e7

General

Target

MDE_File_Sample_9b0fcdf44e0deaaea8ac045a268e7ddc98d5a101.zip
Size

298KB
MD5

7cd86bcbaefe62af32cebbefc5a37e04
SHA1

31eb887abb6dcc035b8b3c1fb166bbe5450999ea
SHA256

cb42390c2f309c26fdd5e47563233afc73fd866af234b9838626440ea62ce7e7
SHA512

20633335cc29068c7e9e56e58edc30ce5c9619cb8d7e315612882075e94d30fce06c4e12f0608079d0d113e05c0184a95f519b29328b1695a67de8b0c9b2759e
SSDEEP

6144:TPIAmVevkm1q93H3ug+J9ggDUGI7Jf6NJeRkZGfhErOyzk+4/wQSdvfE:TgAbE3HWJ9gSROf6Noe1ra+4/ydk

Score

10^/10

lumma discovery stealer

Malware Config

Extracted

Family

lumma

C2

https://foreigoiru.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

Executes dropped EXE 3 IoCs

pid	Process
3508	soryte.exe
1292	soryte.exe
1300	soryte.exe

Loads dropped DLL 3 IoCs

pid	Process
3508	soryte.exe
1292	soryte.exe
1300	soryte.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	soryte.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	soryte.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	soryte.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	7zFM.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	7zFM.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings	7zFM.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings	OpenWith.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings	OpenWith.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1164	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe

Suspicious behavior: GetForegroundWindowSpam 3 IoCs

pid	Process
2456	7zFM.exe
3424	7zFM.exe
3208	OpenWith.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeRestorePrivilege	2456	7zFM.exe
Token: 35	2456	7zFM.exe
Token: SeSecurityPrivilege	2456	7zFM.exe
Token: SeSecurityPrivilege	2456	7zFM.exe
Token: SeBackupPrivilege	3604	svchost.exe
Token: SeRestorePrivilege	3604	svchost.exe
Token: SeSecurityPrivilege	3604	svchost.exe
Token: SeTakeOwnershipPrivilege	3604	svchost.exe
Token: 35	3604	svchost.exe
Token: SeRestorePrivilege	3424	7zFM.exe
Token: 35	3424	7zFM.exe
Token: SeSecurityPrivilege	3424	7zFM.exe
Token: SeSecurityPrivilege	3424	7zFM.exe
Token: SeSecurityPrivilege	3424	7zFM.exe
Token: SeSecurityPrivilege	3424	7zFM.exe
Token: SeSecurityPrivilege	3424	7zFM.exe
Token: SeSecurityPrivilege	3424	7zFM.exe
Token: SeSecurityPrivilege	3424	7zFM.exe

Suspicious use of FindShellTrayWindow 15 IoCs

pid	Process
2456	7zFM.exe
2456	7zFM.exe
2456	7zFM.exe
2456	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe
3424	7zFM.exe

Suspicious use of SetWindowsHookEx 27 IoCs

pid	Process
2524	OpenWith.exe
2524	OpenWith.exe
2524	OpenWith.exe
2524	OpenWith.exe
2524	OpenWith.exe
2524	OpenWith.exe
2524	OpenWith.exe
2524	OpenWith.exe
2524	OpenWith.exe
2524	OpenWith.exe
2524	OpenWith.exe
2524	OpenWith.exe
2524	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
3208	OpenWith.exe
4420	OpenWith.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3424 wrote to memory of 2556	3424	7zFM.exe	112
PID 3424 wrote to memory of 2556	3424	7zFM.exe	112
PID 3424 wrote to memory of 488	3424	7zFM.exe	113
PID 3424 wrote to memory of 488	3424	7zFM.exe	113
PID 3424 wrote to memory of 4900	3424	7zFM.exe	114
PID 3424 wrote to memory of 4900	3424	7zFM.exe	114
PID 2524 wrote to memory of 2804	2524	OpenWith.exe	116
PID 2524 wrote to memory of 2804	2524	OpenWith.exe	116
PID 3424 wrote to memory of 1504	3424	7zFM.exe	117
PID 3424 wrote to memory of 1504	3424	7zFM.exe	117
PID 3424 wrote to memory of 2204	3424	7zFM.exe	118
PID 3424 wrote to memory of 2204	3424	7zFM.exe	118
PID 3424 wrote to memory of 3116	3424	7zFM.exe	119
PID 3424 wrote to memory of 3116	3424	7zFM.exe	119
PID 3208 wrote to memory of 1164	3208	OpenWith.exe	121
PID 3208 wrote to memory of 1164	3208	OpenWith.exe	121

C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\MDE_File_Sample_9b0fcdf44e0deaaea8ac045a268e7ddc98d5a101.zip"
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2456

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k SDRSVC
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3604

C:\Users\Admin\Desktop\soryte.exe
"C:\Users\Admin\Desktop\soryte.exe"
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:3508

C:\Users\Admin\Desktop\soryte.exe
"C:\Users\Admin\Desktop\soryte.exe"
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:1292

C:\Users\Admin\Desktop\soryte.exe
"C:\Users\Admin\Desktop\soryte.exe" C:\Users\Admin\Desktop\wincr.dll
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:1300

C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\Desktop\soryte.exe"
1⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" cryptext.dll,CryptExtOpenCER C:\Users\Admin\AppData\Local\Temp\7zO06D0596B\.CRT
  2⤵
  PID:2556
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" cryptext.dll,CryptExtOpenCER C:\Users\Admin\AppData\Local\Temp\7zO06DDE30B\.CRT
  2⤵
  PID:488
- C:\Windows\notepad.exe
  "C:\Windows\notepad.exe" "C:\Users\Admin\AppData\Local\Temp\7zO06D1CC2B\.CRT"
  2⤵
  PID:4900
- C:\Windows\notepad.exe
  "C:\Windows\notepad.exe" "C:\Users\Admin\AppData\Local\Temp\7zO06D7632C\.data"
  2⤵
  PID:1504
- C:\Windows\notepad.exe
  "C:\Windows\notepad.exe" "C:\Users\Admin\AppData\Local\Temp\7zO06DE73EC\.rdata"
  2⤵
  PID:2204
- C:\Windows\notepad.exe
  "C:\Windows\notepad.exe" "C:\Users\Admin\AppData\Local\Temp\7zO06D4B2BC\.text"
  2⤵
  PID:3116

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\7zO06D8ECEB\1
  2⤵
  PID:2804

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3208
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\wincr.dll
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:1164

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4420

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\7zO06D0596B\.CRT

Filesize
512B

MD5
45003b91b0ad757bc0863cf7a4a7a971

SHA1
4d09acb04ef01680b924017644c54d80092d4c66

SHA256
57eabbff30055474d5becf4820f49d043a7b3473351093c5ee3b4f87f6bc9fb9

SHA512
5080eb332533430c8c1fe8ad90d4d97ff19aab76d041bc3d77d9998ecd3214bcf6cd50198090041f178c7d8490480d37aa55712a4d78cdb7da3884b1a443b402

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zO06D4B2BC\.text

Filesize
8KB

MD5
79a282f63e3fa04012ac1fe6c80ab91e

SHA1
353b2d13f742b1e9317c4befa74ff6c040c5e41e

SHA256
26feb4e3d8e404c6425ad5572640e7006a721442b9d7a3e3d48ddf2acd68d341

SHA512
415d28a36edbca5a76c588d2dd6832ccfdc4981c1c270905ed6aeee87b24ff51e18eacfea427c8fc4dbd3f459f6e98a04b8e73c0c1b37a1602debfb46007c493

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zO06D7632C\.data

Filesize
512B

MD5
acc90889d7a1fc5ff46cb69e24dc987a

SHA1
00e72cadfdca6c66226e828d97bafb73ffbecad5

SHA256
2af8fb4b244d11d6179ad240f5ccb49b499bf649cff06279371bacfe18f7313b

SHA512
32cbe159b11595a5fb059c8e4f2a39ee6541f77314e704abd73ddcd6302e8fde5212bdbf72b5a0c42588c0b1dc24bdaa66b7cf6c9077c7ecc62ba67f75b65d5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zO06D8ECEB\1

Filesize
1KB

MD5
5aa04ce935e78505e230765e85c34355

SHA1
6c93b8c5fde8be4b2231dca6b8ec513cdc82c991

SHA256
a73f26a8d504043f785d7360e8febf2eeb8522ec873a0d4dd5d1d4bfd1e67d3d

SHA512
c6a77beea050c63740d216a32478223d0905e94cf158f3c8f247b125d13ecce58ea7e3b3c4435da4bbdf3b9730e5b7076ff46ccab7930f6579e66ec95a17e6f5

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zO06DE73EC\.rdata

Filesize
2KB

MD5
711c4e06539d3771241367a2cc3680b0

SHA1
81a781c5a5bc4854ade7b3ba08d52f1c75a2f034

SHA256
a8630f95ac0b816aef3042cc7e7127a8f4b6dd0397c5214432218d1a869038ee

SHA512
80a08f59d492b54cd32943806b6ef946c5c15cb8b7eb506ccf6c3e2bcdab23264220fe61a04ce8751b3e9fc74f3ae5796ca9a0a0bea11a7d2c57e8b8950302ca

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

Filesize
21KB

MD5
094e3d100ff3b088c886b96b5ed47d25

SHA1
c02bee1b4259c664b8ccbcf1376011349ba7e9c0

SHA256
e666c48de937578c9cc65f6f36806691a33ee63b12339df27975a570f8bb1bbd

SHA512
cdbace32e02be4e4d471e1c84b7011476631f304dcb3ebaa1a7068e34b7233bae43271fbfcde3b0ffb8964713756f68fcaa15f86d3f022be409dd4454a5ef7ea

Download Submit
C:\Users\Admin\Desktop\wincr.dll

Filesize
971KB

MD5
301110636d01147ed054b745f8f876f5

SHA1
a24dbad0b7433e823ac3b5d3f5388e689a97388e

SHA256
6e03be3d3a4c237e28f0245b93f11277185a69e28ffeb18f0791ea10c435fa98

SHA512
30ba95ac58b2af4ed8ede34ba60ba3e834ebc4c00fbfcd176d5991309659736e132c616d93b0514712206b6da35944cec12720f3eaf0497f17c10b6fc47f712e

Download Submit
memory/1292-19-0x0000000000EB0000-0x0000000000F07000-memory.dmp

Filesize
348KB

Download
memory/1292-21-0x0000000075610000-0x000000007570A000-memory.dmp

Filesize
1000KB

Download
memory/1292-20-0x0000000000070000-0x000000000007D000-memory.dmp

Filesize
52KB

Download
memory/1300-27-0x0000000075610000-0x000000007570A000-memory.dmp

Filesize
1000KB

Download
memory/1300-25-0x0000000000EF0000-0x0000000000F47000-memory.dmp

Filesize
348KB

Download
memory/1300-26-0x0000000000070000-0x000000000007D000-memory.dmp

Filesize
52KB

Download
memory/1300-29-0x0000000075610000-0x000000007570A000-memory.dmp

Filesize
1000KB

Download
memory/3508-14-0x0000000075570000-0x000000007566A000-memory.dmp

Filesize
1000KB

Download
memory/3508-15-0x0000000001600000-0x0000000001657000-memory.dmp

Filesize
348KB

Download
memory/3508-13-0x0000000000070000-0x000000000007D000-memory.dmp

Filesize
52KB

Download
memory/3508-12-0x0000000001600000-0x0000000001657000-memory.dmp

Filesize
348KB

Download
memory/3508-11-0x0000000001600000-0x0000000001657000-memory.dmp

Filesize
348KB

Download
memory/3508-10-0x0000000001600000-0x0000000001657000-memory.dmp

Filesize
348KB

Download
memory/3508-9-0x0000000001600000-0x0000000001657000-memory.dmp

Filesize
348KB

Download
memory/3508-8-0x0000000077B32000-0x0000000077B33000-memory.dmp

Filesize
4KB

Download

Analysis

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