61bf1453572a11da0b81364eaf6b11db46f8a4568c8d939baf5dcd541e6fe18f

General

Target

61bf1453572a11da0b81364eaf6b11db46f8a4568c8d939baf5dcd541e6fe18f.xls
Size

217KB
MD5

4de17a7f5f149382f4a7632dfce6e079
SHA1

046191f043e23361217a1805f28144cb91314f25
SHA256

61bf1453572a11da0b81364eaf6b11db46f8a4568c8d939baf5dcd541e6fe18f
SHA512

1dd5d95e23ce1afb29420fe2e3bfdec833d9a0d2a3dde8829f4723e74db0f559d8a838948cf4b3e2dcd3b23700056aaff1b9d9754b40bfa514b52f04e7905d28
SSDEEP

6144:OKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgIyY+TAQXTHGUMEyP5p6f5jQmH:bbGUMVWlbH

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://aprendeconmireia.com/images/wBu/

xlm40.dropper

http://updailymail.com/cgi-bin/gBYmfqRi2utIS2n/

xlm40.dropper

https://akuntansi.itny.ac.id/asset/9aVFvYeaSKOhGBSLx/

xlm40.dropper

http://swiftwebbox.com/cgi-bin/vNqoMtQilpysJYRwtGu/

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	4268	1020	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4284	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
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4464	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 4268	1020	EXCEL.EXE	68
PID 1020 wrote to memory of 4268	1020	EXCEL.EXE	68
PID 1020 wrote to memory of 4284	1020	EXCEL.EXE	69
PID 1020 wrote to memory of 4284	1020	EXCEL.EXE	69
PID 1020 wrote to memory of 3168	1020	EXCEL.EXE	70
PID 1020 wrote to memory of 3168	1020	EXCEL.EXE	70
PID 1020 wrote to memory of 4464	1020	EXCEL.EXE	71
PID 1020 wrote to memory of 4464	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\61bf1453572a11da0b81364eaf6b11db46f8a4568c8d939baf5dcd541e6fe18f.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 ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4268
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4284
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3168
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4464

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1020-296-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

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

Filesize
64KB

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

Filesize
64KB

Download
memory/1020-120-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

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

Filesize
64KB

Download
memory/1020-130-0x00007FFE449C0000-0x00007FFE449D0000-memory.dmp

Filesize
64KB

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

Filesize
64KB

Download
memory/1020-298-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

Download
memory/1020-297-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

Download
memory/1020-295-0x00007FFE48530000-0x00007FFE48540000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads