26f213e18d20aba53ef25ef1064434474c1bf563a1671217698177177603950f

General

Target

CleanUp.dll
Size

3.9MB
MD5

e2715eea093952fe0f86212acc67c54a
SHA1

f859f8db122bfb7ac742639d4cf44167f70e44ce
SHA256

26f213e18d20aba53ef25ef1064434474c1bf563a1671217698177177603950f
SHA512

34a5dfb4c726e208159983040c0ae91e859a215080624bac1e0f9357cfe3cc6d5f5203b774fe3e881622e80c890e8ef54880109ccd348245a535e30fe870cca2
SSDEEP

98304:q9BpQLAgp0PSjNTVq3WhaQTZBGK82IM0Nm:Eovp0WEgBR8M

Score

9^/10

evasion persistence trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.exe

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	3636	rundll32.exe
4	3636	rundll32.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe

Registers COM server for autorun 1 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4181651180-3163410697-3990547336-1000_Classes\Wow6432Node\CLSID\{8369AB20-56C9-11D0-94E8-00AA0059CE02}\InprocServer32	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4181651180-3163410697-3990547336-1000_Classes\WOW6432Node\CLSID\{8369AB20-56C9-11D0-94E8-00AA0059CE02}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4181651180-3163410697-3990547336-1000_Classes\WOW6432Node\CLSID\{8369AB20-56C9-11D0-94E8-00AA0059CE02}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CleanUp.dll"	rundll32.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3636	rundll32.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4181651180-3163410697-3990547336-1000_Classes\Wow6432Node\CLSID\{8369AB20-56C9-11D0-94E8-00AA0059CE02}\InprocServer32	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4181651180-3163410697-3990547336-1000_Classes\Wow6432Node	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4181651180-3163410697-3990547336-1000_Classes\WOW6432Node\CLSID	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4181651180-3163410697-3990547336-1000_Classes\WOW6432Node\CLSID\{8369AB20-56C9-11D0-94E8-00AA0059CE02}	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4181651180-3163410697-3990547336-1000_Classes\WOW6432Node\CLSID\{8369AB20-56C9-11D0-94E8-00AA0059CE02}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4181651180-3163410697-3990547336-1000_Classes\WOW6432Node\CLSID\{8369AB20-56C9-11D0-94E8-00AA0059CE02}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CleanUp.dll"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3636	rundll32.exe
3636	rundll32.exe
3636	rundll32.exe
3636	rundll32.exe
3636	rundll32.exe
3636	rundll32.exe
3636	rundll32.exe
3636	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3852 wrote to memory of 3636	3852	rundll32.exe	78
PID 3852 wrote to memory of 3636	3852	rundll32.exe	78
PID 3852 wrote to memory of 3636	3852	rundll32.exe	78

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\CleanUp.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3852
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\CleanUp.dll,#1
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Blocklisted process makes network request
  - Checks BIOS information in registry
  - Registers COM server for autorun
  - Checks whether UAC is enabled
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:3636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3636-0-0x0000000077486000-0x0000000077488000-memory.dmp

Filesize
8KB

Download
memory/3636-1-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download
memory/3636-2-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download
memory/3636-3-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download
memory/3636-4-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download
memory/3636-6-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download
memory/3636-5-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download
memory/3636-7-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download
memory/3636-8-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download
memory/3636-9-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download
memory/3636-11-0x0000000010000000-0x000000001007D000-memory.dmp

Filesize
500KB

Download
memory/3636-10-0x0000000000F70000-0x0000000000F71000-memory.dmp

Filesize
4KB

Download
memory/3636-16-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download
memory/3636-17-0x0000000000F90000-0x0000000000FA3000-memory.dmp

Filesize
76KB

Download
memory/3636-18-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download
memory/3636-43-0x0000000066840000-0x0000000067079000-memory.dmp

Filesize
8.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads