luminosity | bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1

Analysis

max time kernel
183s
max time network
128s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
27/11/2022, 03:39

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General

Target
bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe
Size 528KB
Sample221127-d7r35sbd21
SHA256 bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1
MD5 dbd91f5a4c16872c1461fe82a57adfc8
SHA1 f1324a6f57d2c52f35c3ed877ad5d2d86ed3c0f8
SHA512 e6fdd09a4704a3ab2ed579f35306e56c4d6218c1ae85532c9c73bf763660854b34b8a2074648e6dd1daa966960389d3f762a0018cacc13f7ea1f3f01718a80f9
SSDEEP 12288:yfeMYUCNGwaZaQUIDhiLbwO9iObtu3nIMSL:yvYPNGwaZaQUtwQbIdS
MD5 SHA1 SHA512 SSDEEP

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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,\"C:\\Windows\\system32\\clientsvr.exe\""	helper.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\691411\\helper.exe\""	helper.exe

Executes dropped EXE 4 IoCs

pid	Process
888	helper.exe
844	helper.exe
936	helper.exe
1820	helper.exe

Loads dropped DLL 1 IoCs

pid	Process
1868	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.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-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Computer Helper = "\"C:\\ProgramData\\691411\\helper.exe\""	helper.exe

Drops file in System32 directory 2 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1228 set thread context of 1868	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	31
PID 888 set thread context of 1820	888	helper.exe	39

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

System Information Discovery
T1082
Runs net.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe
888	helper.exe
1820	helper.exe
1820	helper.exe
1820	helper.exe
1820	helper.exe
1820	helper.exe
1868	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1868	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe
Token: SeDebugPrivilege	888	helper.exe
Token: SeDebugPrivilege	1820	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1820	helper.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 820	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	27
PID 1228 wrote to memory of 820	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	27
PID 1228 wrote to memory of 820	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	27
PID 1228 wrote to memory of 820	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	27
PID 1228 wrote to memory of 580	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	28
PID 1228 wrote to memory of 580	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	28
PID 1228 wrote to memory of 580	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	28
PID 1228 wrote to memory of 580	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	28
PID 1228 wrote to memory of 1004	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	29
PID 1228 wrote to memory of 1004	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	29
PID 1228 wrote to memory of 1004	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	29
PID 1228 wrote to memory of 1004	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	29
PID 1228 wrote to memory of 1868	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	31
PID 1228 wrote to memory of 1868	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	31
PID 1228 wrote to memory of 1868	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	31
PID 1228 wrote to memory of 1868	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	31
PID 1228 wrote to memory of 1868	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	31
PID 1228 wrote to memory of 1868	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	31
PID 820 wrote to memory of 680	820	cmd.exe	32
PID 820 wrote to memory of 680	820	cmd.exe	32
PID 820 wrote to memory of 680	820	cmd.exe	32
PID 820 wrote to memory of 680	820	cmd.exe	32
PID 1228 wrote to memory of 1868	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	31
PID 1228 wrote to memory of 1868	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	31
PID 1228 wrote to memory of 1868	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	31
PID 1228 wrote to memory of 1868	1228	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	31
PID 680 wrote to memory of 916	680	net.exe	33
PID 680 wrote to memory of 916	680	net.exe	33
PID 680 wrote to memory of 916	680	net.exe	33
PID 680 wrote to memory of 916	680	net.exe	33
PID 1868 wrote to memory of 888	1868	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	35
PID 1868 wrote to memory of 888	1868	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	35
PID 1868 wrote to memory of 888	1868	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	35
PID 1868 wrote to memory of 888	1868	bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe	35
PID 888 wrote to memory of 1544	888	helper.exe	36
PID 888 wrote to memory of 1544	888	helper.exe	36
PID 888 wrote to memory of 1544	888	helper.exe	36
PID 888 wrote to memory of 1544	888	helper.exe	36
PID 888 wrote to memory of 844	888	helper.exe	38
PID 888 wrote to memory of 844	888	helper.exe	38
PID 888 wrote to memory of 844	888	helper.exe	38
PID 888 wrote to memory of 844	888	helper.exe	38
PID 888 wrote to memory of 936	888	helper.exe	40
PID 888 wrote to memory of 936	888	helper.exe	40
PID 888 wrote to memory of 936	888	helper.exe	40
PID 888 wrote to memory of 936	888	helper.exe	40
PID 888 wrote to memory of 1820	888	helper.exe	39
PID 888 wrote to memory of 1820	888	helper.exe	39
PID 888 wrote to memory of 1820	888	helper.exe	39
PID 888 wrote to memory of 1820	888	helper.exe	39
PID 1544 wrote to memory of 1224	1544	cmd.exe	41
PID 1544 wrote to memory of 1224	1544	cmd.exe	41
PID 1544 wrote to memory of 1224	1544	cmd.exe	41
PID 1544 wrote to memory of 1224	1544	cmd.exe	41
PID 888 wrote to memory of 1820	888	helper.exe	39
PID 888 wrote to memory of 1820	888	helper.exe	39
PID 1224 wrote to memory of 280	1224	net.exe	42
PID 1224 wrote to memory of 280	1224	net.exe	42
PID 1224 wrote to memory of 280	1224	net.exe	42
PID 1224 wrote to memory of 280	1224	net.exe	42
PID 888 wrote to memory of 1820	888	helper.exe	39
PID 888 wrote to memory of 1820	888	helper.exe	39
PID 888 wrote to memory of 1820	888	helper.exe	39
PID 888 wrote to memory of 1820	888	helper.exe	39

C:\Users\Admin\AppData\Local\Temp\bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe
"C:\Users\Admin\AppData\Local\Temp\bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Windows\SysWOW64\cmd.exe
  /c net stop MpsSvc
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:820
- - C:\Windows\SysWOW64\net.exe
    net stop MpsSvc
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:680
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop MpsSvc
      4⤵
      PID:916
- C:\Users\Admin\AppData\Local\Temp\bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe
  C:\Users\Admin\AppData\Local\Temp\bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe
  2⤵
  PID:580
- C:\Users\Admin\AppData\Local\Temp\bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe
  C:\Users\Admin\AppData\Local\Temp\bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe
  2⤵
  PID:1004
- C:\Users\Admin\AppData\Local\Temp\bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe
  C:\Users\Admin\AppData\Local\Temp\bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1.exe
  2⤵
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:1868
- - C:\ProgramData\691411\helper.exe
    "C:\ProgramData\691411\helper.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:888
  - - C:\Windows\SysWOW64\cmd.exe
      /c net stop MpsSvc
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1544
    - - C:\Windows\SysWOW64\net.exe
        
        net stop MpsSvc
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1224
      - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 stop MpsSvc
        6⤵
        
        PID:280
  - - C:\ProgramData\691411\helper.exe
      C:\ProgramData\691411\helper.exe
      4⤵
      Executes dropped EXE
      PID:844
  - - C:\ProgramData\691411\helper.exe
      C:\ProgramData\691411\helper.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
      PID:1820
  - - C:\ProgramData\691411\helper.exe
      C:\ProgramData\691411\helper.exe
      4⤵
      Executes dropped EXE
      PID:936

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

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Downloads

helper.exe

Path C:\ProgramData\691411\helper.exe
Size 528KB
SHA256 bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1
MD5 dbd91f5a4c16872c1461fe82a57adfc8
SHA1 f1324a6f57d2c52f35c3ed877ad5d2d86ed3c0f8
SHA512 e6fdd09a4704a3ab2ed579f35306e56c4d6218c1ae85532c9c73bf763660854b34b8a2074648e6dd1daa966960389d3f762a0018cacc13f7ea1f3f01718a80f9
SSDEEP 12288:yfeMYUCNGwaZaQUIDhiLbwO9iObtu3nIMSL:yvYPNGwaZaQUtwQbIdS
MD5 SHA1 SHA512 SSDEEP

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helper.exe

Path C:\ProgramData\691411\helper.exe
Size 528KB
SHA256 bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1
MD5 dbd91f5a4c16872c1461fe82a57adfc8
SHA1 f1324a6f57d2c52f35c3ed877ad5d2d86ed3c0f8
SHA512 e6fdd09a4704a3ab2ed579f35306e56c4d6218c1ae85532c9c73bf763660854b34b8a2074648e6dd1daa966960389d3f762a0018cacc13f7ea1f3f01718a80f9
SSDEEP 12288:yfeMYUCNGwaZaQUIDhiLbwO9iObtu3nIMSL:yvYPNGwaZaQUtwQbIdS
MD5 SHA1 SHA512 SSDEEP

Submit Download

helper.exe

Path C:\ProgramData\691411\helper.exe
Size 528KB
SHA256 bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1
MD5 dbd91f5a4c16872c1461fe82a57adfc8
SHA1 f1324a6f57d2c52f35c3ed877ad5d2d86ed3c0f8
SHA512 e6fdd09a4704a3ab2ed579f35306e56c4d6218c1ae85532c9c73bf763660854b34b8a2074648e6dd1daa966960389d3f762a0018cacc13f7ea1f3f01718a80f9
SSDEEP 12288:yfeMYUCNGwaZaQUIDhiLbwO9iObtu3nIMSL:yvYPNGwaZaQUtwQbIdS
MD5 SHA1 SHA512 SSDEEP

Submit Download

helper.exe

Path C:\ProgramData\691411\helper.exe
Size 528KB
SHA256 bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1
MD5 dbd91f5a4c16872c1461fe82a57adfc8
SHA1 f1324a6f57d2c52f35c3ed877ad5d2d86ed3c0f8
SHA512 e6fdd09a4704a3ab2ed579f35306e56c4d6218c1ae85532c9c73bf763660854b34b8a2074648e6dd1daa966960389d3f762a0018cacc13f7ea1f3f01718a80f9
SSDEEP 12288:yfeMYUCNGwaZaQUIDhiLbwO9iObtu3nIMSL:yvYPNGwaZaQUtwQbIdS
MD5 SHA1 SHA512 SSDEEP

Submit Download

helper.exe

Path C:\ProgramData\691411\helper.exe
Size 528KB
SHA256 bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1
MD5 dbd91f5a4c16872c1461fe82a57adfc8
SHA1 f1324a6f57d2c52f35c3ed877ad5d2d86ed3c0f8
SHA512 e6fdd09a4704a3ab2ed579f35306e56c4d6218c1ae85532c9c73bf763660854b34b8a2074648e6dd1daa966960389d3f762a0018cacc13f7ea1f3f01718a80f9
SSDEEP 12288:yfeMYUCNGwaZaQUIDhiLbwO9iObtu3nIMSL:yvYPNGwaZaQUtwQbIdS
MD5 SHA1 SHA512 SSDEEP

Submit Download

helper.exe

Path \ProgramData\691411\helper.exe
Size 528KB
SHA256 bfe07c849b72c7065d6f179eb1fad54967090ab33ad5b9addda088d532b1ade1
MD5 dbd91f5a4c16872c1461fe82a57adfc8
SHA1 f1324a6f57d2c52f35c3ed877ad5d2d86ed3c0f8
SHA512 e6fdd09a4704a3ab2ed579f35306e56c4d6218c1ae85532c9c73bf763660854b34b8a2074648e6dd1daa966960389d3f762a0018cacc13f7ea1f3f01718a80f9
SSDEEP 12288:yfeMYUCNGwaZaQUIDhiLbwO9iObtu3nIMSL:yvYPNGwaZaQUtwQbIdS
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/888-99-0x0000000074780000-0x0000000074D2B000-memory.dmp

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memory/888-81-0x0000000074780000-0x0000000074D2B000-memory.dmp

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memory/1228-55-0x0000000074800000-0x0000000074DAB000-memory.dmp

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memory/1228-69-0x0000000074800000-0x0000000074DAB000-memory.dmp

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memory/1228-54-0x00000000761F1000-0x00000000761F3000-memory.dmp

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memory/1228-56-0x0000000000370000-0x0000000000374000-memory.dmp

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memory/1820-116-0x0000000074780000-0x0000000074D2B000-memory.dmp

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memory/1820-105-0x0000000074780000-0x0000000074D2B000-memory.dmp

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memory/1868-66-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/1868-104-0x0000000074780000-0x0000000074D2B000-memory.dmp

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memory/1868-60-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/1868-61-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/1868-64-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/1868-75-0x0000000074780000-0x0000000074D2B000-memory.dmp

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memory/1868-58-0x00000000000F0000-0x00000000001EA000-memory.dmp

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memory/1868-70-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/1868-106-0x0000000002210000-0x0000000002227000-memory.dmp

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memory/1868-107-0x0000000002210000-0x0000000002227000-memory.dmp

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memory/1868-109-0x0000000002210000-0x0000000002227000-memory.dmp

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memory/1868-112-0x0000000002210000-0x0000000002227000-memory.dmp

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memory/1868-115-0x0000000002210000-0x0000000002227000-memory.dmp

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memory/1868-72-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/1868-117-0x0000000074780000-0x0000000074D2B000-memory.dmp

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