dc664ca4ea13b3d8dd1bd6aae5ed913b908bad26e1461182496f53cf82df1b70

Analysis

max time kernel
147s
max time network
145s
platform
windows10-1703_x64
resource
win10-20220901-en
resource tags

arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
submitted
04/11/2022, 07:39

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General

Target

dc664ca4ea13b3d8dd1bd6aae5ed913b908bad26e1461182496f53cf82df1b70.xls
Size

217KB
MD5

5f19d68ca7f85fc05af539464f77d18d
SHA1

1eafce6b42c6f4b1153055e9c49bfbf4a224956d
SHA256

dc664ca4ea13b3d8dd1bd6aae5ed913b908bad26e1461182496f53cf82df1b70
SHA512

8bf4b37ba08f31329c73dd6a669eabb793e389661185752c6a68ccea4f08265721ed6507a01b2954c9afa47e9de01fe18d1fb1e46ca1ed8be3e194f848261f71
SSDEEP

6144:zKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgXyY+TAQXTHGUMEyP5p6f5jQmq:DbGUMVWlbq

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://barkstage.es/wp-content/0E7NdYl7TZuHMJq7/

xlm40.dropper

http://contactworks.nl/images_old/NuEAhfF0PCFhvv/

xlm40.dropper

http://www.iam.ch/wp-content/cache/minify/O1OAjWnfen/

xlm40.dropper

https://www.elaboro.pl/wp-admin/J0hwyIMsk9YFIi/

Signatures

Process spawned unexpected child process 4 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	4284	2844	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3160	2844	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4716	2844	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4480	2844	regsvr32.exe	65

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 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	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2844	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2844	EXCEL.EXE
2844	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2844	EXCEL.EXE
2844	EXCEL.EXE
2844	EXCEL.EXE
2844	EXCEL.EXE
2844	EXCEL.EXE
2844	EXCEL.EXE
2844	EXCEL.EXE
2844	EXCEL.EXE
2844	EXCEL.EXE
2844	EXCEL.EXE
2844	EXCEL.EXE
2844	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 4284	2844	EXCEL.EXE	68
PID 2844 wrote to memory of 4284	2844	EXCEL.EXE	68
PID 2844 wrote to memory of 3160	2844	EXCEL.EXE	69
PID 2844 wrote to memory of 3160	2844	EXCEL.EXE	69
PID 2844 wrote to memory of 4716	2844	EXCEL.EXE	70
PID 2844 wrote to memory of 4716	2844	EXCEL.EXE	70
PID 2844 wrote to memory of 4480	2844	EXCEL.EXE	71
PID 2844 wrote to memory of 4480	2844	EXCEL.EXE	71

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\dc664ca4ea13b3d8dd1bd6aae5ed913b908bad26e1461182496f53cf82df1b70.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4284
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3160
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4716
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4480

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2844-120-0x00007FFCC7A70000-0x00007FFCC7A80000-memory.dmp

Filesize
64KB

Download
memory/2844-121-0x00007FFCC7A70000-0x00007FFCC7A80000-memory.dmp

Filesize
64KB

Download
memory/2844-122-0x00007FFCC7A70000-0x00007FFCC7A80000-memory.dmp

Filesize
64KB

Download
memory/2844-123-0x00007FFCC7A70000-0x00007FFCC7A80000-memory.dmp

Filesize
64KB

Download
memory/2844-132-0x00007FFCC4B10000-0x00007FFCC4B20000-memory.dmp

Filesize
64KB

Download
memory/2844-133-0x00007FFCC4B10000-0x00007FFCC4B20000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads