luminosity | cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7

Analysis

max time kernel
154s
max time network
159s
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, 15:18

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General

Target
cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe
Size 372KB
Sample221126-sp4fsagc7t
SHA256 cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7
MD5 4beb9aa614a6adf13b28f2788eb60d10
SHA1 fa29a3a6b2e0a4411bfc3f62fded045cca047c8f
SHA512 08495fc0b552dd7dbd5b9fcacff1ca581bb4461721458439a82d2818e0dd51499e2f97ecea74b04b6b6112e710d37dc30da72ea9bc4584e8fbe4338a89dbad79
SSDEEP 6144:Dr65XFOexNydkH2xC+8DD287dU8zt0AW+SRCzo2Dwp4PrxNY:Dr614RxeX2+4vRCzos5rfY
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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\ProgramData\\334603\\sysmon.exe\""	sysmon.exe

Executes dropped EXE 2 IoCs

pid	Process
4348	sysmon.exe
4244	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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\System Monitor = "\"C:\\ProgramData\\334603\\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 4984 set thread context of 4756	4984	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	82
PID 4348 set thread context of 4244	4348	sysmon.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
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4756	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe
4756	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe
4244	sysmon.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4756	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4244	sysmon.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4244	sysmon.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 4756	4984	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	82
PID 4984 wrote to memory of 4756	4984	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	82
PID 4984 wrote to memory of 4756	4984	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	82
PID 4984 wrote to memory of 4756	4984	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	82
PID 4984 wrote to memory of 4756	4984	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	82
PID 4984 wrote to memory of 4756	4984	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	82
PID 4984 wrote to memory of 4756	4984	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	82
PID 4984 wrote to memory of 4756	4984	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	82
PID 4756 wrote to memory of 4348	4756	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	83
PID 4756 wrote to memory of 4348	4756	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	83
PID 4756 wrote to memory of 4348	4756	cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe	83
PID 4348 wrote to memory of 4244	4348	sysmon.exe	84
PID 4348 wrote to memory of 4244	4348	sysmon.exe	84
PID 4348 wrote to memory of 4244	4348	sysmon.exe	84
PID 4348 wrote to memory of 4244	4348	sysmon.exe	84
PID 4348 wrote to memory of 4244	4348	sysmon.exe	84
PID 4348 wrote to memory of 4244	4348	sysmon.exe	84
PID 4348 wrote to memory of 4244	4348	sysmon.exe	84
PID 4348 wrote to memory of 4244	4348	sysmon.exe	84
PID 4244 wrote to memory of 4756	4244	sysmon.exe	82
PID 4244 wrote to memory of 4756	4244	sysmon.exe	82
PID 4244 wrote to memory of 4756	4244	sysmon.exe	82
PID 4244 wrote to memory of 4756	4244	sysmon.exe	82
PID 4244 wrote to memory of 4756	4244	sysmon.exe	82

C:\Users\Admin\AppData\Local\Temp\cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe
"C:\Users\Admin\AppData\Local\Temp\cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4984
- C:\Users\Admin\AppData\Local\Temp\cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe
  "C:\Users\Admin\AppData\Local\Temp\cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:4756
- - C:\ProgramData\334603\sysmon.exe
    "C:\ProgramData\334603\sysmon.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4348
  - - C:\ProgramData\334603\sysmon.exe
      "C:\ProgramData\334603\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:4244

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\334603\sysmon.exe
Size 372KB
SHA256 cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7
MD5 4beb9aa614a6adf13b28f2788eb60d10
SHA1 fa29a3a6b2e0a4411bfc3f62fded045cca047c8f
SHA512 08495fc0b552dd7dbd5b9fcacff1ca581bb4461721458439a82d2818e0dd51499e2f97ecea74b04b6b6112e710d37dc30da72ea9bc4584e8fbe4338a89dbad79
SSDEEP 6144:Dr65XFOexNydkH2xC+8DD287dU8zt0AW+SRCzo2Dwp4PrxNY:Dr614RxeX2+4vRCzos5rfY
MD5 SHA1 SHA512 SSDEEP

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sysmon.exe

Path C:\ProgramData\334603\sysmon.exe
Size 372KB
SHA256 cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7
MD5 4beb9aa614a6adf13b28f2788eb60d10
SHA1 fa29a3a6b2e0a4411bfc3f62fded045cca047c8f
SHA512 08495fc0b552dd7dbd5b9fcacff1ca581bb4461721458439a82d2818e0dd51499e2f97ecea74b04b6b6112e710d37dc30da72ea9bc4584e8fbe4338a89dbad79
SSDEEP 6144:Dr65XFOexNydkH2xC+8DD287dU8zt0AW+SRCzo2Dwp4PrxNY:Dr614RxeX2+4vRCzos5rfY
MD5 SHA1 SHA512 SSDEEP

Submit Download

sysmon.exe

Path C:\ProgramData\334603\sysmon.exe
Size 372KB
SHA256 cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7
MD5 4beb9aa614a6adf13b28f2788eb60d10
SHA1 fa29a3a6b2e0a4411bfc3f62fded045cca047c8f
SHA512 08495fc0b552dd7dbd5b9fcacff1ca581bb4461721458439a82d2818e0dd51499e2f97ecea74b04b6b6112e710d37dc30da72ea9bc4584e8fbe4338a89dbad79
SSDEEP 6144:Dr65XFOexNydkH2xC+8DD287dU8zt0AW+SRCzo2Dwp4PrxNY:Dr614RxeX2+4vRCzos5rfY
MD5 SHA1 SHA512 SSDEEP

Submit Download

cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\cd5d059cb8de607c0b81521cc5ad30308624ffedadbe5e3d947eb6c4e81a63d7.exe.log
Size 594B
SHA256 2707fc7f074413881b7bafca05079327b188db6005709951e7f69d39a2af97c0
MD5 fdb26b3b547022b45cfaeee57eafd566
SHA1 11c6798b8a59233f404014c5e79b3363cd564b37
SHA512 44d9bb8c0f0b341690d00eda86e15a50f7f29ce9595925c1a2a7e19ad26202d10049a7a97bea278ecb7d429ad555de8edceeffff664d4b06309a9410a09bb700
MD5 SHA1 SHA512

Submit Download

sysmon.exe.log

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

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memory/4244-158-0x0000000075100000-0x00000000756B1000-memory.dmp

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memory/4244-153-0x0000000075100000-0x00000000756B1000-memory.dmp

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memory/4348-145-0x0000000075100000-0x00000000756B1000-memory.dmp

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memory/4348-152-0x0000000075100000-0x00000000756B1000-memory.dmp

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memory/4756-156-0x0000000007480000-0x0000000007497000-memory.dmp

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memory/4756-136-0x0000000000400000-0x000000000043E000-memory.dmp

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memory/4756-140-0x0000000075100000-0x00000000756B1000-memory.dmp

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memory/4756-134-0x0000000000400000-0x000000000043E000-memory.dmp

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memory/4756-154-0x0000000075100000-0x00000000756B1000-memory.dmp

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memory/4756-155-0x0000000007480000-0x0000000007497000-memory.dmp

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memory/4756-157-0x0000000007480000-0x0000000007497000-memory.dmp

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memory/4756-159-0x0000000075100000-0x00000000756B1000-memory.dmp

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memory/4984-139-0x0000000075100000-0x00000000756B1000-memory.dmp

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memory/4984-132-0x0000000075100000-0x00000000756B1000-memory.dmp

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