luminosity | ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42

Analysis

max time kernel
193s
max time network
248s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2022 13:57

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General

Target

ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe
Size

362KB
MD5

6e3cf25df78c855156761cea3155462f
SHA1

0e5af76cda2f4a4ffa22486b3a73ca80b36980b8
SHA256

ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42
SHA512

85b4b69268a453659c7c28b2def0bc6c7e41bfb672425c6fd3dd9d23e92bbc744b1e388aa80d6a07ee4a315a8d2e300e0482a2a0b131f28605968db3abd66624
SSDEEP

6144:y8LU7dZMuhAwR95/m7RmqJSkGWpYE/bmoSoZhN2i/0Qc2k0L9CZq:RU7diuhP1/oRTS8jmoXBsjh6wZq

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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\252276\\helper.exe\""	helper.exe

Executes dropped EXE 3 IoCs

pid	Process
3716	helper.exe
5084	helper.exe
2356	helper.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\u70abLaaceN3n2w4 = "C:\\Users\\Admin\\AppData\\Roaming\\PBKimsnuPa5WIi3K\\BE2Y67Y4ku7k.exe"	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\u70abLaaceN3n2w4CY = "C:\\Users\\Admin\\AppData\\Roaming\\PBKimsnuPa5WIi3K\\CYC7naLTpRmH.exe"	helper.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Computer Helper = "\"C:\\ProgramData\\252276\\helper.exe\""	helper.exe

Drops file in System32 directory 2 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3124 set thread context of 4680	3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	81
PID 3716 set thread context of 2356	3716	helper.exe	84

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
3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe
3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe
3716	helper.exe
3716	helper.exe
3716	helper.exe
3716	helper.exe
3716	helper.exe
3716	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
4680	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe
4680	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe
2356	helper.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4680	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe
Token: SeDebugPrivilege	3716	helper.exe
Token: SeDebugPrivilege	2356	helper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2356	helper.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3124 wrote to memory of 4680	3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	81
PID 3124 wrote to memory of 4680	3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	81
PID 3124 wrote to memory of 4680	3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	81
PID 3124 wrote to memory of 4680	3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	81
PID 3124 wrote to memory of 4680	3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	81
PID 3124 wrote to memory of 4680	3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	81
PID 3124 wrote to memory of 4680	3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	81
PID 3124 wrote to memory of 4680	3124	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	81
PID 4680 wrote to memory of 3716	4680	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	82
PID 4680 wrote to memory of 3716	4680	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	82
PID 4680 wrote to memory of 3716	4680	ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe	82
PID 3716 wrote to memory of 5084	3716	helper.exe	83
PID 3716 wrote to memory of 5084	3716	helper.exe	83
PID 3716 wrote to memory of 5084	3716	helper.exe	83
PID 3716 wrote to memory of 2356	3716	helper.exe	84
PID 3716 wrote to memory of 2356	3716	helper.exe	84
PID 3716 wrote to memory of 2356	3716	helper.exe	84
PID 3716 wrote to memory of 2356	3716	helper.exe	84
PID 3716 wrote to memory of 2356	3716	helper.exe	84
PID 3716 wrote to memory of 2356	3716	helper.exe	84
PID 3716 wrote to memory of 2356	3716	helper.exe	84
PID 3716 wrote to memory of 2356	3716	helper.exe	84
PID 2356 wrote to memory of 4680	2356	helper.exe	81
PID 2356 wrote to memory of 4680	2356	helper.exe	81
PID 2356 wrote to memory of 4680	2356	helper.exe	81
PID 2356 wrote to memory of 4680	2356	helper.exe	81
PID 2356 wrote to memory of 4680	2356	helper.exe	81

C:\Users\Admin\AppData\Local\Temp\ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe
"C:\Users\Admin\AppData\Local\Temp\ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3124
- C:\Users\Admin\AppData\Local\Temp\ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe
  "C:\Users\Admin\AppData\Local\Temp\ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:4680
- - C:\ProgramData\252276\helper.exe
    "C:\ProgramData\252276\helper.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3716
  - - C:\ProgramData\252276\helper.exe
      "C:\ProgramData\252276\helper.exe"
      4⤵
      Executes dropped EXE
      PID:5084
  - - C:\ProgramData\252276\helper.exe
      "C:\ProgramData\252276\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
      Suspicious use of WriteProcessMemory
      PID:2356

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

C:\ProgramData\252276\helper.exe

Filesize
362KB

MD5
6e3cf25df78c855156761cea3155462f

SHA1
0e5af76cda2f4a4ffa22486b3a73ca80b36980b8

SHA256
ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42

SHA512
85b4b69268a453659c7c28b2def0bc6c7e41bfb672425c6fd3dd9d23e92bbc744b1e388aa80d6a07ee4a315a8d2e300e0482a2a0b131f28605968db3abd66624

Download Submit
C:\ProgramData\252276\helper.exe

Filesize
362KB

MD5
6e3cf25df78c855156761cea3155462f

SHA1
0e5af76cda2f4a4ffa22486b3a73ca80b36980b8

SHA256
ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42

SHA512
85b4b69268a453659c7c28b2def0bc6c7e41bfb672425c6fd3dd9d23e92bbc744b1e388aa80d6a07ee4a315a8d2e300e0482a2a0b131f28605968db3abd66624

Download Submit
C:\ProgramData\252276\helper.exe

Filesize
362KB

MD5
6e3cf25df78c855156761cea3155462f

SHA1
0e5af76cda2f4a4ffa22486b3a73ca80b36980b8

SHA256
ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42

SHA512
85b4b69268a453659c7c28b2def0bc6c7e41bfb672425c6fd3dd9d23e92bbc744b1e388aa80d6a07ee4a315a8d2e300e0482a2a0b131f28605968db3abd66624

Download Submit
C:\ProgramData\252276\helper.exe

Filesize
362KB

MD5
6e3cf25df78c855156761cea3155462f

SHA1
0e5af76cda2f4a4ffa22486b3a73ca80b36980b8

SHA256
ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42

SHA512
85b4b69268a453659c7c28b2def0bc6c7e41bfb672425c6fd3dd9d23e92bbc744b1e388aa80d6a07ee4a315a8d2e300e0482a2a0b131f28605968db3abd66624

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\ab0c7b8675aa676dde1de0c67ebbcac22fec306dc969541289e285b06ac22f42.exe.log

Filesize
400B

MD5
0a9b4592cd49c3c21f6767c2dabda92f

SHA1
f534297527ae5ccc0ecb2221ddeb8e58daeb8b74

SHA256
c7effe9cb81a70d738dee863991afefab040290d4c4b78b4202383bcb9f88fcd

SHA512
6b878df474e5bbfb8e9e265f15a76560c2ef151dcebc6388c82d7f6f86ffaf83f5ade5a09f1842e493cb6c8fd63b0b88d088c728fd725f7139f965a5ee332307

Download Submit
memory/2356-153-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/2356-149-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/3124-133-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/3124-136-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/3124-132-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/3716-148-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/3716-142-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/4680-138-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/4680-137-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download
memory/4680-150-0x0000000007070000-0x0000000007087000-memory.dmp

Filesize
92KB

Download
memory/4680-151-0x0000000007070000-0x0000000007087000-memory.dmp

Filesize
92KB

Download
memory/4680-152-0x0000000007070000-0x0000000007087000-memory.dmp

Filesize
92KB

Download
memory/4680-135-0x0000000000400000-0x000000000043E000-memory.dmp

Filesize
248KB

Download
memory/4680-155-0x0000000075100000-0x00000000756B1000-memory.dmp

Filesize
5.7MB

Download