901b7df04ea86f839f969a3428ad95321a04b23868a170396f641a836a317388

General

Target

735aa405e95d883e8b12a8c0638335fb.xls
Size

91KB
MD5

735aa405e95d883e8b12a8c0638335fb
SHA1

9ff47b86cf0dfda2eef7846187aea2d1126f484f
SHA256

901b7df04ea86f839f969a3428ad95321a04b23868a170396f641a836a317388
SHA512

2b35b7931ce765709cc78b2ffef52ff6c5454a511be5faae1cf0d7533d9e64ddf3a34efda45f8b0e34db3c8f03fe33544d8708c9de7c4f2563b97964df382ef9
SSDEEP

1536:8zzzCDuTXZ+GPerCBC8Oly6IDKuwZ952ldWzWVbrzQ7IE3CDkQx2Y3q8pyJtXwtb:sQWVbrzQ7IEyDk3f80JtXwte6f

Score

10^/10

macro xlm

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	4792	2600	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1504	2600	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3884	2600	cmd.exe	EXCEL.EXE

Suspicious Office macro 1 IoCs

Office document equipped with 4.0 macros.

macro xlm

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\735aa405e95d883e8b12a8c0638335fb.xls	office_xlm_macros

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 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

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\F3B65E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2600 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

2600 EXCEL.EXE
2600 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\F3B65E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 2600 wrote to memory of 4792	2600	EXCEL.EXE	cmd.exe
PID 2600 wrote to memory of 4792	2600	EXCEL.EXE	cmd.exe
PID 2600 wrote to memory of 1504	2600	EXCEL.EXE	cmd.exe
PID 2600 wrote to memory of 1504	2600	EXCEL.EXE	cmd.exe
PID 2600 wrote to memory of 3884	2600	EXCEL.EXE	cmd.exe
PID 2600 wrote to memory of 3884	2600	EXCEL.EXE	cmd.exe
PID 4792 wrote to memory of 1372	4792	cmd.exe	attrib.exe
PID 4792 wrote to memory of 1372	4792	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1372 attrib.exe

pid	process
1372	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\735aa405e95d883e8b12a8c0638335fb.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:2600

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:4792

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:1372

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:1504

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:3884

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

C:\Users\Admin\AppData\Local\Temp\735aa405e95d883e8b12a8c0638335fb.xls
Filesize
115KB

MD5
6cee887d9d73a006308cf68a338eb2c9

SHA1
7ddecc4ca2eb014a00c537158d44891d8b3766aa

SHA256
b675cc3e008645a8da98ac1fae620ae7df008c4f019a070a9c49a8c5cc7cbea4

SHA512
cb976052b72c78a95a02213c13662be79ec2f8a23555b3d8c30e674e537cba57b8874d68cdd9f370f1c666570e8049c62012de9f95ed089a629628c9dda84be0

Download Submit
memory/2600-133-0x00007FFAA3970000-0x00007FFAA3980000-memory.dmp

Filesize
64KB

Download
memory/2600-135-0x00007FFAA3970000-0x00007FFAA3980000-memory.dmp

Filesize
64KB

Download
memory/2600-134-0x00007FFAA3970000-0x00007FFAA3980000-memory.dmp

Filesize
64KB

Download
memory/2600-136-0x00007FFAA3970000-0x00007FFAA3980000-memory.dmp

Filesize
64KB

Download
memory/2600-137-0x00007FFAA3970000-0x00007FFAA3980000-memory.dmp

Filesize
64KB

Download
memory/2600-138-0x00007FFAA12B0000-0x00007FFAA12C0000-memory.dmp

Filesize
64KB

Download
memory/2600-139-0x00007FFAA12B0000-0x00007FFAA12C0000-memory.dmp

Filesize
64KB

Download
memory/2600-227-0x00007FFAA3970000-0x00007FFAA3980000-memory.dmp

Filesize
64KB

Download
memory/2600-228-0x00007FFAA3970000-0x00007FFAA3980000-memory.dmp

Filesize
64KB

Download
memory/2600-229-0x00007FFAA3970000-0x00007FFAA3980000-memory.dmp

Filesize
64KB

Download
memory/2600-230-0x00007FFAA3970000-0x00007FFAA3980000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads