luminosity | b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
27/11/2022, 02:21

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General

Target
b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe
Size 1.2MB
Sample221127-cs2hlacf58
SHA256 b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad
MD5 467215da381b86f26f351ff8f9dd68eb
SHA1 e1ec23d03281b769b829746b80d632daa7cef167
SHA512 325597a499dcf8e92144bbb4ba22c817e316b58bf75e4b9abb7de240687f159842e5fe5b70bf514093f403f415fd871bcbe6c14a8ff39e7ef136715464322e07
SSDEEP 6144:FZpoq7VZyVG2nm5ITdgURnwe9TU651/XnGfQuYJmeoc3wuNd5t/Vypfdn19w4:zHyBmuTdVdH6YJpAuNdH/VyD1e4
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\""	sysmon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\648683\\sysmon.exe\""	sysmon.exe

Executes dropped EXE 2 IoCs

pid	Process
2268	sysmon.exe
4192	sysmon.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\System Monitor = "\"C:\\ProgramData\\648683\\sysmon.exe\""	sysmon.exe

Drops file in System32 directory 2 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4104 set thread context of 3424	4104	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	81
PID 2268 set thread context of 4192	2268	sysmon.exe	86

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 64 IoCs

pid	Process
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
3424	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe
3424	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe
4192	sysmon.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3424	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4192	sysmon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4192	sysmon.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 3424	4104	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	81
PID 4104 wrote to memory of 3424	4104	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	81
PID 4104 wrote to memory of 3424	4104	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	81
PID 4104 wrote to memory of 3424	4104	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	81
PID 4104 wrote to memory of 3424	4104	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	81
PID 4104 wrote to memory of 3424	4104	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	81
PID 4104 wrote to memory of 3424	4104	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	81
PID 4104 wrote to memory of 3424	4104	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	81
PID 3424 wrote to memory of 2268	3424	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	85
PID 3424 wrote to memory of 2268	3424	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	85
PID 3424 wrote to memory of 2268	3424	b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe	85
PID 2268 wrote to memory of 4192	2268	sysmon.exe	86
PID 2268 wrote to memory of 4192	2268	sysmon.exe	86
PID 2268 wrote to memory of 4192	2268	sysmon.exe	86
PID 2268 wrote to memory of 4192	2268	sysmon.exe	86
PID 2268 wrote to memory of 4192	2268	sysmon.exe	86
PID 2268 wrote to memory of 4192	2268	sysmon.exe	86
PID 2268 wrote to memory of 4192	2268	sysmon.exe	86
PID 2268 wrote to memory of 4192	2268	sysmon.exe	86
PID 4192 wrote to memory of 3424	4192	sysmon.exe	81
PID 4192 wrote to memory of 3424	4192	sysmon.exe	81
PID 4192 wrote to memory of 3424	4192	sysmon.exe	81
PID 4192 wrote to memory of 3424	4192	sysmon.exe	81
PID 4192 wrote to memory of 3424	4192	sysmon.exe	81

C:\Users\Admin\AppData\Local\Temp\b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe
"C:\Users\Admin\AppData\Local\Temp\b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4104
- C:\Users\Admin\AppData\Local\Temp\b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe
  "C:\Users\Admin\AppData\Local\Temp\b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:3424
- - C:\ProgramData\648683\sysmon.exe
    "C:\ProgramData\648683\sysmon.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2268
  - - C:\ProgramData\648683\sysmon.exe
      "C:\ProgramData\648683\sysmon.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:4192

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

sysmon.exe

Path C:\ProgramData\648683\sysmon.exe
Size 1.2MB
SHA256 b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad
MD5 467215da381b86f26f351ff8f9dd68eb
SHA1 e1ec23d03281b769b829746b80d632daa7cef167
SHA512 325597a499dcf8e92144bbb4ba22c817e316b58bf75e4b9abb7de240687f159842e5fe5b70bf514093f403f415fd871bcbe6c14a8ff39e7ef136715464322e07
SSDEEP 6144:FZpoq7VZyVG2nm5ITdgURnwe9TU651/XnGfQuYJmeoc3wuNd5t/Vypfdn19w4:zHyBmuTdVdH6YJpAuNdH/VyD1e4
MD5 SHA1 SHA512 SSDEEP

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sysmon.exe

Path C:\ProgramData\648683\sysmon.exe
Size 1.2MB
SHA256 b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad
MD5 467215da381b86f26f351ff8f9dd68eb
SHA1 e1ec23d03281b769b829746b80d632daa7cef167
SHA512 325597a499dcf8e92144bbb4ba22c817e316b58bf75e4b9abb7de240687f159842e5fe5b70bf514093f403f415fd871bcbe6c14a8ff39e7ef136715464322e07
SSDEEP 6144:FZpoq7VZyVG2nm5ITdgURnwe9TU651/XnGfQuYJmeoc3wuNd5t/Vypfdn19w4:zHyBmuTdVdH6YJpAuNdH/VyD1e4
MD5 SHA1 SHA512 SSDEEP

Submit Download

sysmon.exe

Path C:\ProgramData\648683\sysmon.exe
Size 1.2MB
SHA256 b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad
MD5 467215da381b86f26f351ff8f9dd68eb
SHA1 e1ec23d03281b769b829746b80d632daa7cef167
SHA512 325597a499dcf8e92144bbb4ba22c817e316b58bf75e4b9abb7de240687f159842e5fe5b70bf514093f403f415fd871bcbe6c14a8ff39e7ef136715464322e07
SSDEEP 6144:FZpoq7VZyVG2nm5ITdgURnwe9TU651/XnGfQuYJmeoc3wuNd5t/Vypfdn19w4:zHyBmuTdVdH6YJpAuNdH/VyD1e4
MD5 SHA1 SHA512 SSDEEP

Submit Download

b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\b2e165f6a4bcc9a723f638c8fbf981b110a122fba4d14bcbcb889a38f6a1ebad.exe.log
Size 594B
SHA256 2707fc7f074413881b7bafca05079327b188db6005709951e7f69d39a2af97c0
MD5 fdb26b3b547022b45cfaeee57eafd566
SHA1 11c6798b8a59233f404014c5e79b3363cd564b37
SHA512 44d9bb8c0f0b341690d00eda86e15a50f7f29ce9595925c1a2a7e19ad26202d10049a7a97bea278ecb7d429ad555de8edceeffff664d4b06309a9410a09bb700
MD5 SHA1 SHA512

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memory/2268-150-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/2268-143-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/3424-153-0x0000000006E10000-0x0000000006E27000-memory.dmp

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memory/3424-152-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/3424-158-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/3424-136-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/3424-134-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/3424-155-0x0000000006E10000-0x0000000006E27000-memory.dmp

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memory/3424-139-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/3424-154-0x0000000006E10000-0x0000000006E27000-memory.dmp

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memory/4104-132-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/4104-138-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/4192-151-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/4192-156-0x0000000074CB0000-0x0000000075261000-memory.dmp

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