metasploit | 4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154

General

Target

4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
Size

250KB
MD5

8a2801219d642c0da797e680d58f7700
SHA1

85d3dff3f0352d37c02f0d9e8592cb04ab3e1194
SHA256

4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154
SHA512

d852db44b8dfc6e7d9f1468bc0cdf6669abc638b5a11e04e5aa253ea8566761bc759753a88bd613860ae009f1d7365d0df05c9eb5ecb8b04735a6b7916af77f2
SSDEEP

3072:FMtmR5tiqzQ7SvHly/pipJ7PqNvMBNOnTIPtTLgBHMsXnTtKnA1Z9CjA+YB:itw5vlbXjIVTIlTLgBHMsAnAf9CDYB

Score

10^/10

metasploit backdoor discovery evasion persistence trojan upx

Malware Config

Extracted

Family

metasploit

Version

encoder/call4_dword_xor

Signatures

MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
trojan backdoor metasploit
Metasploit family
metasploit

Modifies firewall policy service 3 TTPs 8 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

Processes:

igfxcs32.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	igfxcs32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	igfxcs32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	igfxcs32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxcs32.exe = "C:\\Windows\\SysWOW64\\igfxcs32.exe:*:Enabled:Intel Client Manager"	igfxcs32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	igfxcs32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	igfxcs32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	igfxcs32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxcs32.exe = "C:\\Windows\\SysWOW64\\igfxcs32.exe:*:Enabled:Intel Client Manager"	igfxcs32.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

Processes:

4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe

Deletes itself 1 IoCs

Processes:

igfxcs32.exe

pid	Process
2268	igfxcs32.exe

Executes dropped EXE 2 IoCs

Processes:

igfxcs32.exeigfxcs32.exe

pid	Process
4600	igfxcs32.exe
2268	igfxcs32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

igfxcs32.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Intel Client Manager = "C:\\Windows\\SysWOW64\\igfxcs32.exe"	igfxcs32.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exeigfxcs32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	igfxcs32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	igfxcs32.exe

Drops file in System32 directory 5 IoCs

Processes:

4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exeigfxcs32.exe

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
File opened for modification	C:\Windows\SysWOW64\igfxcs32.exe	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
File created	C:\Windows\SysWOW64\igfxcs32.exe	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
File opened for modification	C:\Windows\SysWOW64\	igfxcs32.exe
File opened for modification	C:\Windows\SysWOW64\igfxcs32.exe	igfxcs32.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exeigfxcs32.exe

description	pid	Process	procid_target
PID 3500 set thread context of 3560	3500	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	83
PID 4600 set thread context of 2268	4600	igfxcs32.exe	95

UPX packed file 10 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/3560-0-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/3560-2-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/3560-3-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/3560-4-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/3560-40-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/2268-46-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/2268-47-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/2268-48-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/2268-52-0x0000000000400000-0x0000000000467000-memory.dmp	upx
behavioral2/memory/2268-59-0x0000000000400000-0x0000000000467000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

igfxcs32.exeigfxcs32.exe4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	igfxcs32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	igfxcs32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe

Modifies registry class 1 IoCs

Processes:

4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exeigfxcs32.exe

pid	Process
3560	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
3560	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
3560	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
3560	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe
2268	igfxcs32.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exeigfxcs32.exeigfxcs32.exe

description	pid	Process	procid_target
PID 3500 wrote to memory of 3560	3500	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	83
PID 3500 wrote to memory of 3560	3500	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	83
PID 3500 wrote to memory of 3560	3500	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	83
PID 3500 wrote to memory of 3560	3500	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	83
PID 3500 wrote to memory of 3560	3500	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	83
PID 3500 wrote to memory of 3560	3500	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	83
PID 3500 wrote to memory of 3560	3500	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	83
PID 3500 wrote to memory of 3560	3500	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	83
PID 3560 wrote to memory of 4600	3560	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	94
PID 3560 wrote to memory of 4600	3560	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	94
PID 3560 wrote to memory of 4600	3560	4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe	94
PID 4600 wrote to memory of 2268	4600	igfxcs32.exe	95
PID 4600 wrote to memory of 2268	4600	igfxcs32.exe	95
PID 4600 wrote to memory of 2268	4600	igfxcs32.exe	95
PID 4600 wrote to memory of 2268	4600	igfxcs32.exe	95
PID 4600 wrote to memory of 2268	4600	igfxcs32.exe	95
PID 4600 wrote to memory of 2268	4600	igfxcs32.exe	95
PID 4600 wrote to memory of 2268	4600	igfxcs32.exe	95
PID 4600 wrote to memory of 2268	4600	igfxcs32.exe	95
PID 2268 wrote to memory of 3412	2268	igfxcs32.exe	56
PID 2268 wrote to memory of 3412	2268	igfxcs32.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3412
- C:\Users\Admin\AppData\Local\Temp\4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
  "C:\Users\Admin\AppData\Local\Temp\4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3500
- - C:\Users\Admin\AppData\Local\Temp\4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe
    "C:\Users\Admin\AppData\Local\Temp\4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154N.exe"
    3⤵
    - Checks computer location settings
    - Maps connected drives based on registry
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3560
  - - C:\Windows\SysWOW64\igfxcs32.exe
      "C:\Windows\SysWOW64\igfxcs32.exe" C:\Users\Admin\AppData\Local\Temp\4298EE~1.EXE
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4600
    - - C:\Windows\SysWOW64\igfxcs32.exe
        
        "C:\Windows\SysWOW64\igfxcs32.exe" C:\Users\Admin\AppData\Local\Temp\4298EE~1.EXE
        5⤵
        Modifies firewall policy service
        Deletes itself
        Executes dropped EXE
        Adds Run key to start application
        Maps connected drives based on registry
        Drops file in System32 directory
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:2268

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

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\igfxcs32.exe

Filesize
250KB

MD5
8a2801219d642c0da797e680d58f7700

SHA1
85d3dff3f0352d37c02f0d9e8592cb04ab3e1194

SHA256
4298eef0abacb1a3387ceaa6e3c5ec0551049069711cd7391f5ef80e2f08a154

SHA512
d852db44b8dfc6e7d9f1468bc0cdf6669abc638b5a11e04e5aa253ea8566761bc759753a88bd613860ae009f1d7365d0df05c9eb5ecb8b04735a6b7916af77f2

Download Submit
memory/2268-46-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/2268-47-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/2268-48-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/2268-52-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/2268-59-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/3560-0-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/3560-2-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/3560-3-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/3560-4-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/3560-40-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads