4b3ac89bd01fb2bd5073e7a55ccf791f6192d3d4820364e223227f8a5a139169

Analysis

max time kernel
127s
max time network
130s
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, 21:46

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General

Target
4b3ac89bd01fb2bd5073e7a55ccf791f6192d3d4820364e223227f8a5a139169.xls
Size 91KB
Sample221110-1mrm7sedc3
SHA256 4b3ac89bd01fb2bd5073e7a55ccf791f6192d3d4820364e223227f8a5a139169
MD5 8b4ef9ed29c6eb753a361d0a06953ef1
SHA1 e39113aeea32084de4790e45c1932410fa977eb2
SHA512 922461a135c9d2876b7bf35a7c770cf03179b66c5f6f3ae26803dc8715af37e330832303b7cae38a95b3e09787689f390546bdfff44b887bbe2d6689092c8467
SSDEEP 1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg6bCXuZH4gb4CEn9J4ZKzf:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgP
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
http://darwinistic.com/icon/564vSKxXj/
xlm40.dropper
http://kabaruntukrakyat.com/wp-content/CgMGJbAKsNa/
xlm40.dropper
http://cubicegg.asia/assets/hAr6tUluhw785R/
xlm40.dropper
https://centralcnc.co.uk/wpimages/XdfFc/

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	3164	1752	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4616	1752	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4340	1752	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5096	1752	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
1752	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1752	EXCEL.EXE
1752	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1752	EXCEL.EXE
1752	EXCEL.EXE
1752	EXCEL.EXE
1752	EXCEL.EXE
1752	EXCEL.EXE
1752	EXCEL.EXE
1752	EXCEL.EXE
1752	EXCEL.EXE
1752	EXCEL.EXE
1752	EXCEL.EXE
1752	EXCEL.EXE
1752	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 3164	1752	EXCEL.EXE	68
PID 1752 wrote to memory of 3164	1752	EXCEL.EXE	68
PID 1752 wrote to memory of 4616	1752	EXCEL.EXE	69
PID 1752 wrote to memory of 4616	1752	EXCEL.EXE	69
PID 1752 wrote to memory of 4340	1752	EXCEL.EXE	70
PID 1752 wrote to memory of 4340	1752	EXCEL.EXE	70
PID 1752 wrote to memory of 5096	1752	EXCEL.EXE	71
PID 1752 wrote to memory of 5096	1752	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\4b3ac89bd01fb2bd5073e7a55ccf791f6192d3d4820364e223227f8a5a139169.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:1752
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:3164
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4616
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4340
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:5096

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/1752-310-0x00007FF851770000-0x00007FF851780000-memory.dmp

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memory/1752-119-0x00007FF851770000-0x00007FF851780000-memory.dmp

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memory/1752-120-0x00007FF851770000-0x00007FF851780000-memory.dmp

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memory/1752-121-0x00007FF851770000-0x00007FF851780000-memory.dmp

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memory/1752-130-0x00007FF84DFE0000-0x00007FF84DFF0000-memory.dmp

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memory/1752-131-0x00007FF84DFE0000-0x00007FF84DFF0000-memory.dmp

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memory/1752-118-0x00007FF851770000-0x00007FF851780000-memory.dmp

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memory/1752-313-0x00007FF851770000-0x00007FF851780000-memory.dmp

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memory/1752-311-0x00007FF851770000-0x00007FF851780000-memory.dmp

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memory/1752-312-0x00007FF851770000-0x00007FF851780000-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