b64d2cbb5fb5f49a437afc620d6bcfe9813e35f991a7739892aa92ad83af5f51

General

Target

b64d2cbb5fb5f49a437afc620d6bcfe9813e35f991a7739892aa92ad83af5f51.xls
Size

270KB
MD5

8fc35fb05eb453cbb26c78223d83d228
SHA1

595a26457e18433f2deff3303bca0b534a510fa0
SHA256

b64d2cbb5fb5f49a437afc620d6bcfe9813e35f991a7739892aa92ad83af5f51
SHA512

e94ee93c8ce2e99071dc519c64396f5eef1fac574b332e8da850ad79fd6d0852e6f1da175226d003bc6cc8efead32829bb9c192d36e54991f8c13fe3265f9f8e
SSDEEP

3072:YDvyhNg8npgdX5wndXzmHfTZjVbrzQ7ITk98aJtXwb5kBE/Rp0:YogdpCmF4K

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	1392	3220	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1968	3220	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1508	3220	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3220 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE
3220	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3220 wrote to memory of 1392	3220	EXCEL.EXE	cmd.exe
PID 3220 wrote to memory of 1392	3220	EXCEL.EXE	cmd.exe
PID 3220 wrote to memory of 1508	3220	EXCEL.EXE	cmd.exe
PID 3220 wrote to memory of 1508	3220	EXCEL.EXE	cmd.exe
PID 3220 wrote to memory of 1968	3220	EXCEL.EXE	cmd.exe
PID 3220 wrote to memory of 1968	3220	EXCEL.EXE	cmd.exe
PID 1392 wrote to memory of 4328	1392	cmd.exe	attrib.exe
PID 1392 wrote to memory of 4328	1392	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4328 attrib.exe

pid	process
4328	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\b64d2cbb5fb5f49a437afc620d6bcfe9813e35f991a7739892aa92ad83af5f51.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3220

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:1392

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4328

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:1968

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:1508

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

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Downloads

memory/1392-139-0x0000000000000000-mapping.dmp

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memory/1508-140-0x0000000000000000-mapping.dmp

Download
memory/1968-141-0x0000000000000000-mapping.dmp

Download
memory/3220-135-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmp

Filesize
64KB

Download
memory/3220-136-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmp

Filesize
64KB

Download
memory/3220-137-0x00007FFB99260000-0x00007FFB99270000-memory.dmp

Filesize
64KB

Download
memory/3220-138-0x00007FFB99260000-0x00007FFB99270000-memory.dmp

Filesize
64KB

Download
memory/3220-132-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmp

Filesize
64KB

Download
memory/3220-134-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmp

Filesize
64KB

Download
memory/3220-133-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmp

Filesize
64KB

Download
memory/3220-144-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmp

Filesize
64KB

Download
memory/3220-145-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmp

Filesize
64KB

Download
memory/3220-146-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmp

Filesize
64KB

Download
memory/3220-147-0x00007FFB9B4D0000-0x00007FFB9B4E0000-memory.dmp

Filesize
64KB

Download
memory/4328-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads