b507f597117a4acd8ce703f3540738da8c0765ecbfaf2d77c01e0aca6f4700ac

General

Target

b507f597117a4acd8ce703f3540738da8c0765ecbfaf2d77c01e0aca6f4700ac.xls
Size

94KB
MD5

039ee77ecaf5281cfbf755de8b984f5d
SHA1

d688728a7e25d04d47e19516f76dbd292b9b3c86
SHA256

b507f597117a4acd8ce703f3540738da8c0765ecbfaf2d77c01e0aca6f4700ac
SHA512

9973a203eddb1c754d543fb50265c5b9b6539d34be1f5d29791d04ee2797f44b9fc59b54d1e1459013b9b9e4773faebfa84f672359331114a3118b5036fce6f3
SSDEEP

1536:5W2eadfHfWVKXDL4zQ7ITkR62l5IhY7nJdJoOd7cJyXwR+M2M/MRqkY:XWVZzQ7ITk9Q2AJyXwz5kJY

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	1764	1420	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1760	1420	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3036	1420	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1420 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE
1420	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1420 wrote to memory of 1764	1420	EXCEL.EXE	cmd.exe
PID 1420 wrote to memory of 1764	1420	EXCEL.EXE	cmd.exe
PID 1420 wrote to memory of 1760	1420	EXCEL.EXE	cmd.exe
PID 1420 wrote to memory of 1760	1420	EXCEL.EXE	cmd.exe
PID 1420 wrote to memory of 3036	1420	EXCEL.EXE	cmd.exe
PID 1420 wrote to memory of 3036	1420	EXCEL.EXE	cmd.exe
PID 1764 wrote to memory of 1260	1764	cmd.exe	attrib.exe
PID 1764 wrote to memory of 1260	1764	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1260 attrib.exe

pid	process
1260	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\b507f597117a4acd8ce703f3540738da8c0765ecbfaf2d77c01e0aca6f4700ac.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1420

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:1764

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:1260

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:1760

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:3036

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/1260-145-0x0000000000000000-mapping.dmp

Download
memory/1420-147-0x0000023615C59000-0x0000023615C5B000-memory.dmp

Filesize
8KB

Download
memory/1420-150-0x00007FFB1B8F0000-0x00007FFB1B900000-memory.dmp

Filesize
64KB

Download
memory/1420-138-0x00007FFB1B8F0000-0x00007FFB1B900000-memory.dmp

Filesize
64KB

Download
memory/1420-139-0x00007FFB1B8F0000-0x00007FFB1B900000-memory.dmp

Filesize
64KB

Download
memory/1420-152-0x00007FFB1B8F0000-0x00007FFB1B900000-memory.dmp

Filesize
64KB

Download
memory/1420-141-0x00007FFB19520000-0x00007FFB19530000-memory.dmp

Filesize
64KB

Download
memory/1420-137-0x00007FFB1B8F0000-0x00007FFB1B900000-memory.dmp

Filesize
64KB

Download
memory/1420-151-0x00007FFB1B8F0000-0x00007FFB1B900000-memory.dmp

Filesize
64KB

Download
memory/1420-140-0x00007FFB19520000-0x00007FFB19530000-memory.dmp

Filesize
64KB

Download
memory/1420-136-0x00007FFB1B8F0000-0x00007FFB1B900000-memory.dmp

Filesize
64KB

Download
memory/1420-146-0x0000023615C59000-0x0000023615C5B000-memory.dmp

Filesize
8KB

Download
memory/1420-135-0x00007FFB1B8F0000-0x00007FFB1B900000-memory.dmp

Filesize
64KB

Download
memory/1420-149-0x00007FFB1B8F0000-0x00007FFB1B900000-memory.dmp

Filesize
64KB

Download
memory/1760-143-0x0000000000000000-mapping.dmp

Download
memory/1764-142-0x0000000000000000-mapping.dmp

Download
memory/3036-144-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads