luminosity | f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
27-11-2022 18:22

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General

Target

f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe
Size

349KB
MD5

60eec175da96472e274f381336f2e953
SHA1

3bf49fe29e8a17070594ab1df37d36c7d605576a
SHA256

f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11
SHA512

3715091d4beb2e3903f4f5e2a37366d0c0d55e88d2aba78f4000d348fc31ef7936a9092fb716e8af10bcd9932b940e931a667f6cf8244ac7bfe9d8e34e519549
SSDEEP

6144:/v+2p5fGOmQ2lBZnUnoJHwGYb3XFNCSbLnTZYJFpiNX85pRpp99k9T9s9s9:H+2p5pmQg5U6HCB5bzOFwd2pRpp99k9l

Score

10^/10

luminosity persistence rat

Malware Config

Signatures

Luminosity
Luminosity is a RAT family that was on sale, while claiming to be a system administration utility.
rat luminosity

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\224205\\csrss.exe\""	csrss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	csrss.exe

Executes dropped EXE 2 IoCs

pid	Process
592	csrss.exe
636	csrss.exe

Loads dropped DLL 2 IoCs

pid	Process
988	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe
988	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Client Services Runtime Service = "\"C:\\ProgramData\\224205\\csrss.exe\""	csrss.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\clientsvr.exe	csrss.exe
File opened for modification	C:\Windows\SysWOW64\clientsvr.exe	csrss.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1032 set thread context of 988	1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	28
PID 592 set thread context of 636	592	csrss.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
636	csrss.exe
636	csrss.exe
636	csrss.exe
636	csrss.exe
636	csrss.exe
1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
988	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe
Token: SeDebugPrivilege	592	csrss.exe
Token: SeDebugPrivilege	636	csrss.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
636	csrss.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1032 wrote to memory of 988	1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	28
PID 1032 wrote to memory of 988	1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	28
PID 1032 wrote to memory of 988	1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	28
PID 1032 wrote to memory of 988	1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	28
PID 1032 wrote to memory of 988	1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	28
PID 1032 wrote to memory of 988	1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	28
PID 1032 wrote to memory of 988	1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	28
PID 1032 wrote to memory of 988	1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	28
PID 1032 wrote to memory of 988	1032	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	28
PID 988 wrote to memory of 592	988	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	30
PID 988 wrote to memory of 592	988	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	30
PID 988 wrote to memory of 592	988	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	30
PID 988 wrote to memory of 592	988	f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe	30
PID 592 wrote to memory of 636	592	csrss.exe	31
PID 592 wrote to memory of 636	592	csrss.exe	31
PID 592 wrote to memory of 636	592	csrss.exe	31
PID 592 wrote to memory of 636	592	csrss.exe	31
PID 592 wrote to memory of 636	592	csrss.exe	31
PID 592 wrote to memory of 636	592	csrss.exe	31
PID 592 wrote to memory of 636	592	csrss.exe	31
PID 592 wrote to memory of 636	592	csrss.exe	31
PID 592 wrote to memory of 636	592	csrss.exe	31
PID 636 wrote to memory of 1032	636	csrss.exe	27
PID 636 wrote to memory of 1032	636	csrss.exe	27
PID 636 wrote to memory of 1032	636	csrss.exe	27
PID 636 wrote to memory of 1032	636	csrss.exe	27
PID 636 wrote to memory of 1032	636	csrss.exe	27

C:\Users\Admin\AppData\Local\Temp\f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe
"C:\Users\Admin\AppData\Local\Temp\f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1032
- C:\Users\Admin\AppData\Local\Temp\f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe
  "C:\Users\Admin\AppData\Local\Temp\f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:988
- - C:\ProgramData\224205\csrss.exe
    "C:\ProgramData\224205\csrss.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:592
  - - C:\ProgramData\224205\csrss.exe
      "C:\ProgramData\224205\csrss.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      Drops file in System32 directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:636

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\224205\csrss.exe

Filesize
349KB

MD5
60eec175da96472e274f381336f2e953

SHA1
3bf49fe29e8a17070594ab1df37d36c7d605576a

SHA256
f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11

SHA512
3715091d4beb2e3903f4f5e2a37366d0c0d55e88d2aba78f4000d348fc31ef7936a9092fb716e8af10bcd9932b940e931a667f6cf8244ac7bfe9d8e34e519549

Download Submit
C:\ProgramData\224205\csrss.exe

Filesize
349KB

MD5
60eec175da96472e274f381336f2e953

SHA1
3bf49fe29e8a17070594ab1df37d36c7d605576a

SHA256
f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11

SHA512
3715091d4beb2e3903f4f5e2a37366d0c0d55e88d2aba78f4000d348fc31ef7936a9092fb716e8af10bcd9932b940e931a667f6cf8244ac7bfe9d8e34e519549

Download Submit
C:\ProgramData\224205\csrss.exe

Filesize
349KB

MD5
60eec175da96472e274f381336f2e953

SHA1
3bf49fe29e8a17070594ab1df37d36c7d605576a

SHA256
f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11

SHA512
3715091d4beb2e3903f4f5e2a37366d0c0d55e88d2aba78f4000d348fc31ef7936a9092fb716e8af10bcd9932b940e931a667f6cf8244ac7bfe9d8e34e519549

Download Submit
\ProgramData\224205\csrss.exe

Filesize
349KB

MD5
60eec175da96472e274f381336f2e953

SHA1
3bf49fe29e8a17070594ab1df37d36c7d605576a

SHA256
f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11

SHA512
3715091d4beb2e3903f4f5e2a37366d0c0d55e88d2aba78f4000d348fc31ef7936a9092fb716e8af10bcd9932b940e931a667f6cf8244ac7bfe9d8e34e519549

Download Submit
\ProgramData\224205\csrss.exe

Filesize
349KB

MD5
60eec175da96472e274f381336f2e953

SHA1
3bf49fe29e8a17070594ab1df37d36c7d605576a

SHA256
f00480b1d8e9b860b77fc5fb64c5ecc3cde8ae3bfe8aa9bbdabe57da5633bc11

SHA512
3715091d4beb2e3903f4f5e2a37366d0c0d55e88d2aba78f4000d348fc31ef7936a9092fb716e8af10bcd9932b940e931a667f6cf8244ac7bfe9d8e34e519549

Download Submit
memory/592-92-0x0000000074F00000-0x00000000754AB000-memory.dmp

Filesize
5.7MB

Download
memory/592-76-0x0000000074F00000-0x00000000754AB000-memory.dmp

Filesize
5.7MB

Download
memory/636-94-0x0000000074F00000-0x00000000754AB000-memory.dmp

Filesize
5.7MB

Download
memory/636-90-0x0000000074F00000-0x00000000754AB000-memory.dmp

Filesize
5.7MB

Download
memory/988-67-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/988-57-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/988-75-0x0000000074F00000-0x00000000754AB000-memory.dmp

Filesize
5.7MB

Download
memory/988-58-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/988-60-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/988-65-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/988-91-0x0000000074F00000-0x00000000754AB000-memory.dmp

Filesize
5.7MB

Download
memory/988-93-0x0000000074F00000-0x00000000754AB000-memory.dmp

Filesize
5.7MB

Download
memory/988-62-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/1032-54-0x0000000076711000-0x0000000076713000-memory.dmp

Filesize
8KB

Download
memory/1032-56-0x0000000074F00000-0x00000000754AB000-memory.dmp

Filesize
5.7MB

Download
memory/1032-55-0x0000000074F00000-0x00000000754AB000-memory.dmp

Filesize
5.7MB

Download