23c02e00bc291b5580c99fd6dfcd86c040d94c060b59520a74542c2eeebc34b0

General

Target

23c02e00bc291b5580c99fd6dfcd86c040d94c060b59520a74542c2eeebc34b0.xls
Size

222KB
MD5

efc48d06191ae27545d136408d52ed23
SHA1

0829c0cd0fc63040fca0cd25d7f4d23c9a94ef4b
SHA256

23c02e00bc291b5580c99fd6dfcd86c040d94c060b59520a74542c2eeebc34b0
SHA512

8719ef8766c8e6a6bbb96c274e080a6a45e871435e866579287193db2591dce599cfd6c9c3243b31389d0f0fdc5fb0f1c9fc736a9e2bb6c110f43c31d7c2bafc
SSDEEP

6144:VPBFxEl1rQsrkqf+YfeUeWSY36+qcY8Ij:NBFxEvrVrkqf+YfzSY3TB

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	4156	4708	cmd.exe	79
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1132	4708	cmd.exe	79
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3292	4708	cmd.exe	79

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

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

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

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\C2275E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4708	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE
4708	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4708 wrote to memory of 4156	4708	EXCEL.EXE	82
PID 4708 wrote to memory of 4156	4708	EXCEL.EXE	82
PID 4708 wrote to memory of 1132	4708	EXCEL.EXE	84
PID 4708 wrote to memory of 1132	4708	EXCEL.EXE	84
PID 4708 wrote to memory of 3292	4708	EXCEL.EXE	85
PID 4708 wrote to memory of 3292	4708	EXCEL.EXE	85
PID 4156 wrote to memory of 3972	4156	cmd.exe	88
PID 4156 wrote to memory of 3972	4156	cmd.exe	88

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
3972	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\23c02e00bc291b5580c99fd6dfcd86c040d94c060b59520a74542c2eeebc34b0.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4708
- 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:4156
- - C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    3⤵
    - Views/modifies file attributes
    PID:3972
- 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:1132
- 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:3292

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/4708-136-0x00007FF873990000-0x00007FF8739A0000-memory.dmp

Filesize
64KB

Download
memory/4708-137-0x00007FF871810000-0x00007FF871820000-memory.dmp

Filesize
64KB

Download
memory/4708-138-0x00007FF871810000-0x00007FF871820000-memory.dmp

Filesize
64KB

Download
memory/4708-132-0x00007FF873990000-0x00007FF8739A0000-memory.dmp

Filesize
64KB

Download
memory/4708-135-0x00007FF873990000-0x00007FF8739A0000-memory.dmp

Filesize
64KB

Download
memory/4708-134-0x00007FF873990000-0x00007FF8739A0000-memory.dmp

Filesize
64KB

Download
memory/4708-142-0x000001A89092A000-0x000001A89092C000-memory.dmp

Filesize
8KB

Download
memory/4708-133-0x00007FF873990000-0x00007FF8739A0000-memory.dmp

Filesize
64KB

Download
memory/4708-144-0x000001A89092A000-0x000001A89092C000-memory.dmp

Filesize
8KB

Download
memory/4708-146-0x00007FF873990000-0x00007FF8739A0000-memory.dmp

Filesize
64KB

Download
memory/4708-147-0x00007FF873990000-0x00007FF8739A0000-memory.dmp

Filesize
64KB

Download
memory/4708-148-0x00007FF873990000-0x00007FF8739A0000-memory.dmp

Filesize
64KB

Download
memory/4708-149-0x00007FF873990000-0x00007FF8739A0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads