c1f51a7e7f97a6699b8ee63a6de5f87d571ff066411a6f57bc204d62423f46ff

General

Target

c1f51a7e7f97a6699b8ee63a6de5f87d571ff066411a6f57bc204d62423f46ff.xls
Size

109KB
MD5

30755702c496612259b0b5bc51fcbcd8
SHA1

65819404eeacc0b52c256ef6a5b38f6eef5db51d
SHA256

c1f51a7e7f97a6699b8ee63a6de5f87d571ff066411a6f57bc204d62423f46ff
SHA512

632ffc01f0987c5801a8e3dac114fa1431e479d8b8b6d6317970e1d7c6339b32b4bbcac8283b8ab098a207f1bcce0a044bad85dfaac386c37a8c1f1f129e96b1
SSDEEP

3072:u71gxv7yZmspH7+cclKisUI4ukoRWGNtWVbrzQ7sWTkPxbww33XjUJtXwHek0:Q1gxv7yZmspH7+cclKisUI4ukoRWGNW+

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	1512	2448	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5036	2448	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2328	2448	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

2448 EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

EXCEL.EXE

pid	process
2448	EXCEL.EXE
2448	EXCEL.EXE
2448	EXCEL.EXE
2448	EXCEL.EXE
2448	EXCEL.EXE
2448	EXCEL.EXE
2448	EXCEL.EXE
2448	EXCEL.EXE
2448	EXCEL.EXE
2448	EXCEL.EXE
2448	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 2448 wrote to memory of 2320	2448	EXCEL.EXE	splwow64.exe
PID 2448 wrote to memory of 2320	2448	EXCEL.EXE	splwow64.exe
PID 2448 wrote to memory of 1512	2448	EXCEL.EXE	cmd.exe
PID 2448 wrote to memory of 1512	2448	EXCEL.EXE	cmd.exe
PID 2448 wrote to memory of 5036	2448	EXCEL.EXE	cmd.exe
PID 2448 wrote to memory of 5036	2448	EXCEL.EXE	cmd.exe
PID 2448 wrote to memory of 2328	2448	EXCEL.EXE	cmd.exe
PID 2448 wrote to memory of 2328	2448	EXCEL.EXE	cmd.exe
PID 1512 wrote to memory of 5044	1512	cmd.exe	attrib.exe
PID 1512 wrote to memory of 5044	1512	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

5044 attrib.exe

pid	process
5044	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\c1f51a7e7f97a6699b8ee63a6de5f87d571ff066411a6f57bc204d62423f46ff.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2448

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:2320

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:1512

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:5044

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:5036

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:2328

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:4388

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\1c4fdbf8385e41bd860707a007944a39 /t 744 /p 2448
1⤵
PID:3124

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/1512-140-0x0000000000000000-mapping.dmp

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memory/2320-139-0x0000000000000000-mapping.dmp

Download
memory/2328-142-0x0000000000000000-mapping.dmp

Download
memory/2448-132-0x00007FFEFC0B0000-0x00007FFEFC0C0000-memory.dmp

Filesize
64KB

Download
memory/2448-133-0x00007FFEFC0B0000-0x00007FFEFC0C0000-memory.dmp

Filesize
64KB

Download
memory/2448-134-0x00007FFEFC0B0000-0x00007FFEFC0C0000-memory.dmp

Filesize
64KB

Download
memory/2448-135-0x00007FFEFC0B0000-0x00007FFEFC0C0000-memory.dmp

Filesize
64KB

Download
memory/2448-136-0x00007FFEFC0B0000-0x00007FFEFC0C0000-memory.dmp

Filesize
64KB

Download
memory/2448-137-0x00007FFEFA050000-0x00007FFEFA060000-memory.dmp

Filesize
64KB

Download
memory/2448-138-0x00007FFEFA050000-0x00007FFEFA060000-memory.dmp

Filesize
64KB

Download
memory/5036-141-0x0000000000000000-mapping.dmp

Download
memory/5044-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads