metasploit | b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637

General

Target

b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
Size

237KB
MD5

e8840fbf9dc879cdf2646d9732aaf4fb
SHA1

b4b9f15c9a97b318aa3ee624704621286610f73d
SHA256

b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637
SHA512

7658a51b5baff89ca68fc0f3defa36ffd2db217dcc7234e292c0cc2fbaa0cf7538b07592820f3f83417c93e46294807876c287b127441488db1a55fa488a099e
SSDEEP

3072:eGSriql1GY0iYCN/kkSophVyPb4/zS5DG5OUZ0Twff+Zuw8WyL+u:WWyT0qkxophPpfZ02

Score

10^/10

metasploit backdoor 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

Modifies firewall policy service 2 TTPs 8 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

igfxhk64.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	igfxhk64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	igfxhk64.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxhk64.exe = "C:\\Windows\\SysWOW64\\igfxhk64.exe:*:Enabled:Intel Help Console"	igfxhk64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	igfxhk64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	igfxhk64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	igfxhk64.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxhk64.exe = "C:\\Windows\\SysWOW64\\igfxhk64.exe:*:Enabled:Intel Help Console"	igfxhk64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	igfxhk64.exe

Executes dropped EXE 2 IoCs

Processes:

igfxhk64.exeigfxhk64.exe

pid process

4248 igfxhk64.exe
1716 igfxhk64.exe

pid	process
4248	igfxhk64.exe
1716	igfxhk64.exe

UPX packed file 9 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/376-133-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/376-135-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/376-136-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/376-137-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/376-141-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/1716-146-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/1716-147-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/1716-148-0x0000000000400000-0x0000000000464000-memory.dmp	upx
behavioral2/memory/1716-149-0x0000000000400000-0x0000000000464000-memory.dmp	upx

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:

b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

igfxhk64.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	igfxhk64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Intel Help Console = "C:\\Windows\\SysWOW64\\igfxhk64.exe"	igfxhk64.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:

igfxhk64.exeb4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	igfxhk64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	igfxhk64.exe

Drops file in System32 directory 5 IoCs

Processes:

igfxhk64.exeb4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\	igfxhk64.exe
File opened for modification	C:\Windows\SysWOW64\igfxhk64.exe	igfxhk64.exe
File opened for modification	C:\Windows\SysWOW64\	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
File opened for modification	C:\Windows\SysWOW64\igfxhk64.exe	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
File created	C:\Windows\SysWOW64\igfxhk64.exe	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exeigfxhk64.exe

description	pid	process	target process
PID 4932 set thread context of 376	4932	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
PID 4248 set thread context of 1716	4248	igfxhk64.exe	igfxhk64.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

Processes:

b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exeigfxhk64.exe

pid	process
376	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
376	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
376	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
376	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe
1716	igfxhk64.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exeb4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exeigfxhk64.exeigfxhk64.exe

description	pid	process	target process
PID 4932 wrote to memory of 376	4932	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
PID 4932 wrote to memory of 376	4932	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
PID 4932 wrote to memory of 376	4932	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
PID 4932 wrote to memory of 376	4932	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
PID 4932 wrote to memory of 376	4932	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
PID 4932 wrote to memory of 376	4932	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
PID 4932 wrote to memory of 376	4932	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
PID 4932 wrote to memory of 376	4932	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
PID 376 wrote to memory of 4248	376	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	igfxhk64.exe
PID 376 wrote to memory of 4248	376	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	igfxhk64.exe
PID 376 wrote to memory of 4248	376	b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe	igfxhk64.exe
PID 4248 wrote to memory of 1716	4248	igfxhk64.exe	igfxhk64.exe
PID 4248 wrote to memory of 1716	4248	igfxhk64.exe	igfxhk64.exe
PID 4248 wrote to memory of 1716	4248	igfxhk64.exe	igfxhk64.exe
PID 4248 wrote to memory of 1716	4248	igfxhk64.exe	igfxhk64.exe
PID 4248 wrote to memory of 1716	4248	igfxhk64.exe	igfxhk64.exe
PID 4248 wrote to memory of 1716	4248	igfxhk64.exe	igfxhk64.exe
PID 4248 wrote to memory of 1716	4248	igfxhk64.exe	igfxhk64.exe
PID 4248 wrote to memory of 1716	4248	igfxhk64.exe	igfxhk64.exe
PID 1716 wrote to memory of 2948	1716	igfxhk64.exe	Explorer.EXE
PID 1716 wrote to memory of 2948	1716	igfxhk64.exe	Explorer.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:2948

C:\Users\Admin\AppData\Local\Temp\b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
"C:\Users\Admin\AppData\Local\Temp\b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4932

C:\Users\Admin\AppData\Local\Temp\b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe
"C:\Users\Admin\AppData\Local\Temp\b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637.exe"
3⤵
- Checks computer location settings
- Maps connected drives based on registry
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:376

C:\Windows\SysWOW64\igfxhk64.exe
"C:\Windows\SysWOW64\igfxhk64.exe" C:\Users\Admin\AppData\Local\Temp\B4C75C~1.EXE
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4248

C:\Windows\SysWOW64\igfxhk64.exe
"C:\Windows\SysWOW64\igfxhk64.exe" C:\Users\Admin\AppData\Local\Temp\B4C75C~1.EXE
5⤵
- Modifies firewall policy service
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1716

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\igfxhk64.exe
Filesize
237KB

MD5
e8840fbf9dc879cdf2646d9732aaf4fb

SHA1
b4b9f15c9a97b318aa3ee624704621286610f73d

SHA256
b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637

SHA512
7658a51b5baff89ca68fc0f3defa36ffd2db217dcc7234e292c0cc2fbaa0cf7538b07592820f3f83417c93e46294807876c287b127441488db1a55fa488a099e

Download Submit
C:\Windows\SysWOW64\igfxhk64.exe
Filesize
237KB

MD5
e8840fbf9dc879cdf2646d9732aaf4fb

SHA1
b4b9f15c9a97b318aa3ee624704621286610f73d

SHA256
b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637

SHA512
7658a51b5baff89ca68fc0f3defa36ffd2db217dcc7234e292c0cc2fbaa0cf7538b07592820f3f83417c93e46294807876c287b127441488db1a55fa488a099e

Download Submit
C:\Windows\SysWOW64\igfxhk64.exe
Filesize
237KB

MD5
e8840fbf9dc879cdf2646d9732aaf4fb

SHA1
b4b9f15c9a97b318aa3ee624704621286610f73d

SHA256
b4c75cde1442704ad67e162fdd087f7b6d0680cd2e349e4a5665e0a948390637

SHA512
7658a51b5baff89ca68fc0f3defa36ffd2db217dcc7234e292c0cc2fbaa0cf7538b07592820f3f83417c93e46294807876c287b127441488db1a55fa488a099e

Download Submit
memory/376-136-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/376-137-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/376-132-0x0000000000000000-mapping.dmp

Download
memory/376-135-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/376-141-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/376-133-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/1716-142-0x0000000000000000-mapping.dmp

Download
memory/1716-146-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/1716-147-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/1716-148-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/1716-149-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4248-138-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads