3a23b954e2f6c61916e9b733fa17d94893452dcf07668f2cf3a8b697082a46d3

General

Target

3a23b954e2f6c61916e9b733fa17d94893452dcf07668f2cf3a8b697082a46d3.xls
Size

111KB
MD5

8399f63198333d9cc3b5237132ce4e49
SHA1

97dc167eae08060b7ea8136c767de8c8c57c8035
SHA256

3a23b954e2f6c61916e9b733fa17d94893452dcf07668f2cf3a8b697082a46d3
SHA512

2275371dffb0d5e149a3d1fdf08a619731ef8183117816ad7d07f65171b22583ab323babca389d91903b22b9d294cb88583df5e01215ff445205512a3a4afa4f
SSDEEP

1536:2tttBpRFBDEgBtieWnYHfZ2DnUt03g3IZ95BMqzmptHhWVbrzQ72zzTkiD2lkmYQ:KsMymp/WVbrzQ72/TkDamYRn/Kv4Ml

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.

Processes:

cmd.execmd.execmd.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1244	3956	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4632	3956	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1596	3956	cmd.exe	EXCEL.EXE

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\FAD85E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3956 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\FAD85E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

EXCEL.EXE

pid	process
3956	EXCEL.EXE
3956	EXCEL.EXE
3956	EXCEL.EXE
3956	EXCEL.EXE
3956	EXCEL.EXE
3956	EXCEL.EXE
3956	EXCEL.EXE
3956	EXCEL.EXE
3956	EXCEL.EXE
3956	EXCEL.EXE
3956	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3956 wrote to memory of 1244	3956	EXCEL.EXE	cmd.exe
PID 3956 wrote to memory of 1244	3956	EXCEL.EXE	cmd.exe
PID 3956 wrote to memory of 1596	3956	EXCEL.EXE	cmd.exe
PID 3956 wrote to memory of 1596	3956	EXCEL.EXE	cmd.exe
PID 3956 wrote to memory of 4632	3956	EXCEL.EXE	cmd.exe
PID 3956 wrote to memory of 4632	3956	EXCEL.EXE	cmd.exe
PID 1244 wrote to memory of 1472	1244	cmd.exe	attrib.exe
PID 1244 wrote to memory of 1472	1244	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1472 attrib.exe

pid	process
1472	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\3a23b954e2f6c61916e9b733fa17d94893452dcf07668f2cf3a8b697082a46d3.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3956

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:1244

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:1472

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:4632

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:1596

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1244-139-0x0000000000000000-mapping.dmp

Download
memory/1472-142-0x0000000000000000-mapping.dmp

Download
memory/1596-140-0x0000000000000000-mapping.dmp

Download
memory/3956-138-0x00007FF8838B0000-0x00007FF8838C0000-memory.dmp

Filesize
64KB

Download
memory/3956-136-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/3956-137-0x00007FF8838B0000-0x00007FF8838C0000-memory.dmp

Filesize
64KB

Download
memory/3956-132-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/3956-135-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/3956-134-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/3956-133-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/3956-144-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/3956-145-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/3956-146-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/3956-147-0x00007FF885A70000-0x00007FF885A80000-memory.dmp

Filesize
64KB

Download
memory/4632-141-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads