458647b35b9d36a4c165e4e6b8f6eea156ecdbf45b04e6681dfa6f79b9b81e38

Analysis

max time kernel
128s
max time network
131s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
10/11/2022, 21:29

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General

Target
458647b35b9d36a4c165e4e6b8f6eea156ecdbf45b04e6681dfa6f79b9b81e38.xls
Size 91KB
Sample221110-1b9pmsgbhk
SHA256 458647b35b9d36a4c165e4e6b8f6eea156ecdbf45b04e6681dfa6f79b9b81e38
MD5 17b1a213038d635bbce5308da8c8e31e
SHA1 1580be2fbc0f8a411549996ed3a3f90f568025b7
SHA512 ee79cd70333987b9c5c86aaa581a289c19adf5e39842dcc6d47cfe8821fb6dbb227e21eab46123a618ff9526a0002ca1b6f07b418aa894150d56c8c8f503a96a
SSDEEP 1536:eKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg4bCXuZH4gb4CEn9J4ZfrX:eKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgg
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
http://www.vinyz.com/cache/rqWV/
xlm40.dropper
http://yuanliao.raluking.com/1eq5o7/gHrTM8YilZz0quKt/
xlm40.dropper
https://akarweb.net/cgi-bin/CL13tGXI/
xlm40.dropper
http://www.bdbg.es/css/DDm7o71vWtTs/

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	4908	1020	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1740	1020	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4276	1020	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3168	1020	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 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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1020	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1020	EXCEL.EXE
1020	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE
1020	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1020 wrote to memory of 4908	1020	EXCEL.EXE	68
PID 1020 wrote to memory of 4908	1020	EXCEL.EXE	68
PID 1020 wrote to memory of 1740	1020	EXCEL.EXE	69
PID 1020 wrote to memory of 1740	1020	EXCEL.EXE	69
PID 1020 wrote to memory of 4276	1020	EXCEL.EXE	70
PID 1020 wrote to memory of 4276	1020	EXCEL.EXE	70
PID 1020 wrote to memory of 3168	1020	EXCEL.EXE	71
PID 1020 wrote to memory of 3168	1020	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\458647b35b9d36a4c165e4e6b8f6eea156ecdbf45b04e6681dfa6f79b9b81e38.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:1020
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4908
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:1740
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4276
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:3168

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/1020-292-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

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memory/1020-117-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

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memory/1020-118-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

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memory/1020-119-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

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memory/1020-128-0x00007FFE449C0000-0x00007FFE449D0000-memory.dmp

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memory/1020-129-0x00007FFE449C0000-0x00007FFE449D0000-memory.dmp

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memory/1020-294-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

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memory/1020-293-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Download

memory/1020-116-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Download

memory/1020-291-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads