032a39900761efd9adff97b6aef768d65152328c9e6fb7b6794b8aa047049201

General

Target

032a39900761efd9adff97b6aef768d65152328c9e6fb7b6794b8aa047049201.xls
Size

282KB
MD5

7d753d90d322ad0765eccf1a5d3e1474
SHA1

3853242b62e76f74c3187132411b2af4964aaa87
SHA256

032a39900761efd9adff97b6aef768d65152328c9e6fb7b6794b8aa047049201
SHA512

b4c0df830de06c3f7d47212adccf7188fa77f87fda84ea0d786d9e2299922af96fc3f8ebe353a67b6c515e361f4ba026e8a191eb00e0c6508673063d8dbca9b7

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1420	3860	WerFault.exe	79

Loads dropped DLL 1 IoCs

pid	Process
3860	EXCEL.EXE

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1420	3860	WerFault.exe	79

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{D04BA487-749D-4672-A1CD-100BDCA5CB39}\E12BD00A.png:Zone.Identifier	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3860	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3860	EXCEL.EXE
3860	EXCEL.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3860	EXCEL.EXE

Suspicious use of SetWindowsHookEx 18 IoCs

pid	Process
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE
3860	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3860 wrote to memory of 3800	3860	EXCEL.EXE	87
PID 3860 wrote to memory of 3800	3860	EXCEL.EXE	87

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\032a39900761efd9adff97b6aef768d65152328c9e6fb7b6794b8aa047049201.xls"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3860
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:3800
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 3860 -s 5400
  2⤵
  - Process spawned unexpected child process
  - Program crash
  PID:1420

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 408 -p 3860 -ip 3860
1⤵
PID:1668

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\masterbox2.dll

Filesize
64KB

MD5
5467e81b6c5417af0dcc566605b13481

SHA1
eeecc25656f290630dcfe30218cdb69bb0f316aa

SHA256
257bee57c5cac49ce0b5f9b160a3aaafde703ecc036cf4cf32975fc08c7f445e

SHA512
baf888cd4fcd929b973fedbb791d5e1e320fd4fff0aa15372fa94a0d898e9942ac80bf8965caa5dc8565077ee9928aa6fa3997d7ab114914a08bd863a8789c48

Download Submit
memory/3860-133-0x00007FFF77E70000-0x00007FFF77E80000-memory.dmp

Filesize
64KB

Download
memory/3860-130-0x00007FFF77E70000-0x00007FFF77E80000-memory.dmp

Filesize
64KB

Download
memory/3860-134-0x00007FFF77E70000-0x00007FFF77E80000-memory.dmp

Filesize
64KB

Download
memory/3860-135-0x00007FFF75DE0000-0x00007FFF75DF0000-memory.dmp

Filesize
64KB

Download
memory/3860-136-0x00007FFF75DE0000-0x00007FFF75DF0000-memory.dmp

Filesize
64KB

Download
memory/3860-137-0x0000020A98220000-0x0000020A98224000-memory.dmp

Filesize
16KB

Download
memory/3860-138-0x0000020A94ADF000-0x0000020A94AE1000-memory.dmp

Filesize
8KB

Download
memory/3860-132-0x00007FFF77E70000-0x00007FFF77E80000-memory.dmp

Filesize
64KB

Download
memory/3860-131-0x00007FFF77E70000-0x00007FFF77E80000-memory.dmp

Filesize
64KB

Download
memory/3860-141-0x000000005B900000-0x000000005B91E000-memory.dmp

Filesize
120KB

Download
memory/3860-142-0x0000020A9A290000-0x0000020A9A293000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads