0662b95eafc74dd6257bda280ba83fba8f4150445f544c4b33189a210d570d9f

Analysis

max time kernel
119s
max time network
126s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 19:44

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General

Target

0662b95eafc74dd6257bda280ba83fba8f4150445f544c4b33189a210d570d9f.xlsm
Size

21KB
MD5

23158545ef4c34b6f2064fe4e0ed56ce
SHA1

d4d81598fc1f527afcb73c8b937072bd030df6e5
SHA256

0662b95eafc74dd6257bda280ba83fba8f4150445f544c4b33189a210d570d9f
SHA512

39775ecb510a64b2d74b77197990abb66c8a1665e745ddeb16bd43b964f07c9d74cd0a586c1fff760a1eb3652862fb09b7430c6a786fa3ba43386ac298e596df
SSDEEP

384:vhuAi/NjZS8EibbwBlwegASYrLb5CzgObff9kC+xbX77NWu:vtsNxzXQFCBn9kC+xbL71

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://beetle-j.jp/wp-admin/ErM4mW05tdj/

xlm40.dropper

https://brutobrasil.com.br/pdf/toO18cIP3/

xlm40.dropper

http://e3technology.in/2checkout_integration_php/rDcr1Wl90WWA9M/

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

regsvr32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2856	516	regsvr32.exe	EXCEL.EXE

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

EXCEL.EXEregsvr32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

516 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

516 EXCEL.EXE
516 EXCEL.EXE
516 EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

pid	process
516	EXCEL.EXE

pid	process
516	EXCEL.EXE
516	EXCEL.EXE
516	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 516 wrote to memory of 2856	516	EXCEL.EXE	regsvr32.exe
PID 516 wrote to memory of 2856	516	EXCEL.EXE	regsvr32.exe
PID 516 wrote to memory of 2856	516	EXCEL.EXE	regsvr32.exe
PID 516 wrote to memory of 2856	516	EXCEL.EXE	regsvr32.exe
PID 516 wrote to memory of 2856	516	EXCEL.EXE	regsvr32.exe
PID 516 wrote to memory of 2856	516	EXCEL.EXE	regsvr32.exe
PID 516 wrote to memory of 2856	516	EXCEL.EXE	regsvr32.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\0662b95eafc74dd6257bda280ba83fba8f4150445f544c4b33189a210d570d9f.xlsm
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:516
- C:\Windows\SysWow64\regsvr32.exe
  C:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\rfs.dll

Filesize
114B

MD5
e89f75f918dbdcee28604d4e09dd71d7

SHA1
f9d9055e9878723a12063b47d4a1a5f58c3eb1e9

SHA256
6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023

SHA512
8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0

Download Submit
memory/516-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/516-1-0x0000000072AED000-0x0000000072AF8000-memory.dmp

Filesize
44KB

Download
memory/516-7-0x0000000072AED000-0x0000000072AF8000-memory.dmp

Filesize
44KB

Download