1c3b7d3757119af7b0d44cbafc04fa283b17e4c77f1ac3970bbf9cdc584ec941

General

Target

1c3b7d3757119af7b0d44cbafc04fa283b17e4c77f1ac3970bbf9cdc584ec941.xls
Size

98KB
MD5

efd065eeed2afee5ea4a3fab7f609eb9
SHA1

c82de7cd2fed6faa3e60b7da26a151d7b9c6e2e7
SHA256

1c3b7d3757119af7b0d44cbafc04fa283b17e4c77f1ac3970bbf9cdc584ec941
SHA512

2670824868c39b2f1854e8cb33e2ea4d9f5c0caf490482d7acaab3748542508e5d85984b699f84667368e67215c575a1af23808bd3a2de0598dca1fb8196e1d6
SSDEEP

1536:sVVVVZETJnPtDHaWevwP3B+7v8Vcfo7fVz3Z95ODoJEM5ue+tt2jcc0lbxOvTgZ6:bS2jcc0lbxOrEjqaV9o

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 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	4228	4528	cmd.exe	71
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4556	4528	cmd.exe	71
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3848	4528	cmd.exe	71

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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 created	C:\Users\Admin\AppData\Local\Temp\74175E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4528	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4528	EXCEL.EXE
4528	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE
4528	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4528 wrote to memory of 4228	4528	EXCEL.EXE	85
PID 4528 wrote to memory of 4228	4528	EXCEL.EXE	85
PID 4528 wrote to memory of 4556	4528	EXCEL.EXE	87
PID 4528 wrote to memory of 4556	4528	EXCEL.EXE	87
PID 4528 wrote to memory of 3848	4528	EXCEL.EXE	88
PID 4528 wrote to memory of 3848	4528	EXCEL.EXE	88
PID 4228 wrote to memory of 4880	4228	cmd.exe	91
PID 4228 wrote to memory of 4880	4228	cmd.exe	91

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
4880	attrib.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\1c3b7d3757119af7b0d44cbafc04fa283b17e4c77f1ac3970bbf9cdc584ec941.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4528
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:4228
- - C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    3⤵
    - Views/modifies file attributes
    PID:4880
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
  2⤵
  - Process spawned unexpected child process
  PID:4556
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
  2⤵
  - Process spawned unexpected child process
  PID:3848

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

1

T1158

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4528-135-0x00007FFFADAD0000-0x00007FFFADAE0000-memory.dmp

Filesize
64KB

Download
memory/4528-132-0x00007FFFADAD0000-0x00007FFFADAE0000-memory.dmp

Filesize
64KB

Download
memory/4528-136-0x00007FFFADAD0000-0x00007FFFADAE0000-memory.dmp

Filesize
64KB

Download
memory/4528-137-0x00007FFFAB600000-0x00007FFFAB610000-memory.dmp

Filesize
64KB

Download
memory/4528-138-0x00007FFFAB600000-0x00007FFFAB610000-memory.dmp

Filesize
64KB

Download
memory/4528-134-0x00007FFFADAD0000-0x00007FFFADAE0000-memory.dmp

Filesize
64KB

Download
memory/4528-133-0x00007FFFADAD0000-0x00007FFFADAE0000-memory.dmp

Filesize
64KB

Download
memory/4528-144-0x00007FFFADAD0000-0x00007FFFADAE0000-memory.dmp

Filesize
64KB

Download
memory/4528-145-0x00007FFFADAD0000-0x00007FFFADAE0000-memory.dmp

Filesize
64KB

Download
memory/4528-146-0x00007FFFADAD0000-0x00007FFFADAE0000-memory.dmp

Filesize
64KB

Download
memory/4528-147-0x00007FFFADAD0000-0x00007FFFADAE0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads