5678487ef48332defdc02c465cd87285393b4003809ea95a7ae1355bcb6dab53

General

Target

Attachment_97775.xlsb
Size

197KB
MD5

f3816c84f0ba476a6a110432d3f15b0b
SHA1

75b31cd545c4d84116a387430ee4f87d08298cdc
SHA256

5678487ef48332defdc02c465cd87285393b4003809ea95a7ae1355bcb6dab53
SHA512

32f34a80536137247016592446138d2e3ab4e3d8a3bfc1e27b857b5056bcd702cdae29330e77ec9189a7ee76fba9c43a7406f51f23719727f7c4af47eff29a30

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.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	2412	796	rundll32.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

796 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 796 wrote to memory of 2412 796 EXCEL.EXE rundll32.exe
PID 796 wrote to memory of 2412 796 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 796 wrote to memory of 2412	796	EXCEL.EXE	rundll32.exe
PID 796 wrote to memory of 2412	796	EXCEL.EXE	rundll32.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\Attachment_97775.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:796
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\ProgramData\uoxv\69.dll,DllRegisterServer1
  2⤵
  - Process spawned unexpected child process
  PID:2412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

C:\ProgramData\uoxv\69.dll

MD5
1f37c5a3005823fa5aa873480dbe54df

SHA1
1d244bf18dcb174d001a6965d3ca1c35a034adfc

SHA256
6922073ff47ad25cd4779965947d09d74495d0f19a7ac35e22596c355e62584e

SHA512
51bef7a0565588872c3ae5a1a0b7737462e79639394f52a78e5407f97a1926859d31e66caa4f08dca887ddabe4b3aaf29a1b155c599d56ee21c35f7df822cd70

Download Submit
memory/796-2-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/796-3-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/796-4-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/796-5-0x00007FF99EBB0000-0x00007FF99F1E7000-memory.dmp

Filesize
6.2MB

Download
memory/796-6-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/2412-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads