15b87ef138dcd72be8a1e06dd2e7339a31ee2ab30978ff253baec6e21f2519e8

General

Target

15b87ef138dcd72be8a1e06dd2e7339a31ee2ab30978ff253baec6e21f2519e8.xls
Size

107KB
MD5

57fb0ccf8b323ad56ecc6a4f65ea2e35
SHA1

abaa22282a72d787d1767b16b78c21286c847a39
SHA256

15b87ef138dcd72be8a1e06dd2e7339a31ee2ab30978ff253baec6e21f2519e8
SHA512

2edf7c669398f4cec9ece47b2f3fc5ee8d9c3f101cac01c635eb468aad3170a859168dd8aa166ef78c37ec3d0c2997fb70cd22d343f602163d8c689c5106ae8b
SSDEEP

1536:hEeeeqrLziqqQzJtV8cbsQvPe8k16FMZ95C3HvT7kH7Ek2jcc0lbxOqTgZczhY7c:kFXk2jcc0lbxOKP2AJtXwLi

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	4492	3436	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1028	3436	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3372	3436	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\C5F65E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3436 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\C5F65E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3436	EXCEL.EXE
3436	EXCEL.EXE
3436	EXCEL.EXE
3436	EXCEL.EXE
3436	EXCEL.EXE
3436	EXCEL.EXE
3436	EXCEL.EXE
3436	EXCEL.EXE
3436	EXCEL.EXE
3436	EXCEL.EXE
3436	EXCEL.EXE
3436	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3436 wrote to memory of 4492	3436	EXCEL.EXE	cmd.exe
PID 3436 wrote to memory of 4492	3436	EXCEL.EXE	cmd.exe
PID 3436 wrote to memory of 1028	3436	EXCEL.EXE	cmd.exe
PID 3436 wrote to memory of 1028	3436	EXCEL.EXE	cmd.exe
PID 3436 wrote to memory of 3372	3436	EXCEL.EXE	cmd.exe
PID 3436 wrote to memory of 3372	3436	EXCEL.EXE	cmd.exe
PID 4492 wrote to memory of 2268	4492	cmd.exe	attrib.exe
PID 4492 wrote to memory of 2268	4492	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

2268 attrib.exe

pid	process
2268	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\15b87ef138dcd72be8a1e06dd2e7339a31ee2ab30978ff253baec6e21f2519e8.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:3436

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:4492

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:2268

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:1028

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:3372

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

Replay Monitor

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Downloads

memory/1028-140-0x0000000000000000-mapping.dmp

Download
memory/2268-142-0x0000000000000000-mapping.dmp

Download
memory/3372-141-0x0000000000000000-mapping.dmp

Download
memory/3436-136-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/3436-134-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/3436-137-0x00007FFB61FD0000-0x00007FFB61FE0000-memory.dmp

Filesize
64KB

Download
memory/3436-138-0x00007FFB61FD0000-0x00007FFB61FE0000-memory.dmp

Filesize
64KB

Download
memory/3436-135-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/3436-133-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/3436-149-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/3436-132-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/3436-143-0x000001B49ACA0000-0x000001B49ACA2000-memory.dmp

Filesize
8KB

Download
memory/3436-144-0x000001B49ACA0000-0x000001B49ACA2000-memory.dmp

Filesize
8KB

Download
memory/3436-146-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/3436-147-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/3436-148-0x00007FFB64030000-0x00007FFB64040000-memory.dmp

Filesize
64KB

Download
memory/4492-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads