e23d49bc52000f614ca7341ba08820cb2cb1ceedfdd5d801aceb0f8ec571c21b

Analysis

max time kernel
129s
max time network
132s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
03/11/2022, 22:34

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General

Target

e23d49bc52000f614ca7341ba08820cb2cb1ceedfdd5d801aceb0f8ec571c21b.xls
Size

217KB
MD5

bf5251f430e7efe6f4228ad44655da35
SHA1

99e5a450cf8d70c80eb42b9d440dcc3fa176ff0e
SHA256

e23d49bc52000f614ca7341ba08820cb2cb1ceedfdd5d801aceb0f8ec571c21b
SHA512

ae67615296776add0fd56ea66ca5013045235fb95feea766f532000b0b4cce467bce46b46c7ea27a4272bd156f031263a226d785fc40ff1081b41554c6c50a15
SSDEEP

6144:zKpb8rGYrMPe3q7Q0XV5xtuEsi8/dglyY+TAQXTHGUMEyP5p6f5jQm7ZnT:1bGUMVWlbJ

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://app.clubdedocentes.com/storage/DCcq9ekgH99sI/

xlm40.dropper

http://linhkiendoc.com/app/payments/qoy5JqpLqrbsKl/

xlm40.dropper

http://sourcecool.com/throng/iOD/

xlm40.dropper

http://www.stickers-et-deco.com/Adapter/lYw/

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	4880	4480	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3724	4480	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3136	4480	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3904	4480	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
4480	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4480	EXCEL.EXE
4480	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4480	EXCEL.EXE
4480	EXCEL.EXE
4480	EXCEL.EXE
4480	EXCEL.EXE
4480	EXCEL.EXE
4480	EXCEL.EXE
4480	EXCEL.EXE
4480	EXCEL.EXE
4480	EXCEL.EXE
4480	EXCEL.EXE
4480	EXCEL.EXE
4480	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4480 wrote to memory of 4880	4480	EXCEL.EXE	68
PID 4480 wrote to memory of 4880	4480	EXCEL.EXE	68
PID 4480 wrote to memory of 3724	4480	EXCEL.EXE	69
PID 4480 wrote to memory of 3724	4480	EXCEL.EXE	69
PID 4480 wrote to memory of 3136	4480	EXCEL.EXE	70
PID 4480 wrote to memory of 3136	4480	EXCEL.EXE	70
PID 4480 wrote to memory of 3904	4480	EXCEL.EXE	71
PID 4480 wrote to memory of 3904	4480	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\e23d49bc52000f614ca7341ba08820cb2cb1ceedfdd5d801aceb0f8ec571c21b.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:4480
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4880
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3724
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3136
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3904

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/4480-119-0x00007FFCE8030000-0x00007FFCE8040000-memory.dmp

Filesize
64KB

Download
memory/4480-128-0x00007FFCE52B0000-0x00007FFCE52C0000-memory.dmp

Filesize
64KB

Download
memory/4480-129-0x00007FFCE52B0000-0x00007FFCE52C0000-memory.dmp

Filesize
64KB

Download
memory/4480-116-0x00007FFCE8030000-0x00007FFCE8040000-memory.dmp

Filesize
64KB

Download
memory/4480-118-0x00007FFCE8030000-0x00007FFCE8040000-memory.dmp

Filesize
64KB

Download
memory/4480-117-0x00007FFCE8030000-0x00007FFCE8040000-memory.dmp

Filesize
64KB

Download
memory/4480-292-0x00007FFCE8030000-0x00007FFCE8040000-memory.dmp

Filesize
64KB

Download
memory/4480-293-0x00007FFCE8030000-0x00007FFCE8040000-memory.dmp

Filesize
64KB

Download
memory/4480-294-0x00007FFCE8030000-0x00007FFCE8040000-memory.dmp

Filesize
64KB

Download
memory/4480-295-0x00007FFCE8030000-0x00007FFCE8040000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads