1d811f95cf9d40f1ee98b6d3662c21f0423fe4391d068da91becae334940cb2a

General

Target

1d811f95cf9d40f1ee98b6d3662c21f0423fe4391d068da91becae334940cb2a.xls
Size

86KB
MD5

000fd98db928e27b0402634cfbbe30a0
SHA1

b669ca16402d5133e6d873f2112d188a263cb62e
SHA256

1d811f95cf9d40f1ee98b6d3662c21f0423fe4391d068da91becae334940cb2a
SHA512

8834e08706545feb1d9f383d687b70cb1efbc28fae7be7f8ba942d9e83c3fd6964bb89077be03f599db778bc5c3a7094e8b0aca532a3c324691ba1c1a2232e13
SSDEEP

1536:dCNhN1eXZMV2jcc0lbxOvTgFbBOU/WwF7zlZX:sV2jcc0lbxOrCY0zvX

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.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1496	4544	cmd.exe	76
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4548	4544	cmd.exe	76
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3804	4544	cmd.exe	76

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{D6E82DD3-3529-4AE5-9E8A-A73711ADFDB3}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{792E3962-281F-4BC6-A61A-7A773F762A63}.catalogItem	svchost.exe

Checks processor information in registry 2 TTPs 6 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE

Enumerates system info in registry 2 TTPs 5 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.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

pid	Process
4544	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE
4544	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4544 wrote to memory of 1496	4544	EXCEL.EXE	96
PID 4544 wrote to memory of 1496	4544	EXCEL.EXE	96
PID 4544 wrote to memory of 4548	4544	EXCEL.EXE	97
PID 4544 wrote to memory of 4548	4544	EXCEL.EXE	97
PID 4544 wrote to memory of 3804	4544	EXCEL.EXE	99
PID 4544 wrote to memory of 3804	4544	EXCEL.EXE	99
PID 1496 wrote to memory of 2104	1496	cmd.exe	103
PID 1496 wrote to memory of 2104	1496	cmd.exe	103

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
2104	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\1d811f95cf9d40f1ee98b6d3662c21f0423fe4391d068da91becae334940cb2a.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4544
- 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:1496
- - C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    3⤵
    - Views/modifies file attributes
    PID:2104
- 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:4548
- 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:3804

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:5016

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/4544-144-0x000001DFB0E78000-0x000001DFB0E7A000-memory.dmp

Filesize
8KB

Download
memory/4544-133-0x00007FFD4B270000-0x00007FFD4B280000-memory.dmp

Filesize
64KB

Download
memory/4544-137-0x00007FFD49000000-0x00007FFD49010000-memory.dmp

Filesize
64KB

Download
memory/4544-138-0x00007FFD49000000-0x00007FFD49010000-memory.dmp

Filesize
64KB

Download
memory/4544-135-0x00007FFD4B270000-0x00007FFD4B280000-memory.dmp

Filesize
64KB

Download
memory/4544-149-0x00007FFD4B270000-0x00007FFD4B280000-memory.dmp

Filesize
64KB

Download
memory/4544-134-0x00007FFD4B270000-0x00007FFD4B280000-memory.dmp

Filesize
64KB

Download
memory/4544-136-0x00007FFD4B270000-0x00007FFD4B280000-memory.dmp

Filesize
64KB

Download
memory/4544-143-0x000001DFB0E78000-0x000001DFB0E7A000-memory.dmp

Filesize
8KB

Download
memory/4544-132-0x00007FFD4B270000-0x00007FFD4B280000-memory.dmp

Filesize
64KB

Download
memory/4544-146-0x00007FFD4B270000-0x00007FFD4B280000-memory.dmp

Filesize
64KB

Download
memory/4544-147-0x00007FFD4B270000-0x00007FFD4B280000-memory.dmp

Filesize
64KB

Download
memory/4544-148-0x00007FFD4B270000-0x00007FFD4B280000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads