4df811184804a69909d21aa8a20da6902590c2871fdf84d2290f6b911448c365

General

Target

4df811184804a69909d21aa8a20da6902590c2871fdf84d2290f6b911448c365.xls
Size

80KB
MD5

18a6679b90020130d8b2da431882471c
SHA1

24a1e6dfbbfbbc6253e62d18ece87e51c6d537b7
SHA256

4df811184804a69909d21aa8a20da6902590c2871fdf84d2290f6b911448c365
SHA512

d27f40e8bf6db767a77c860e396003891e81edda61ffe9bdde05e3a8003080b256e7785ad32efd5ca6ee52789da635510e44a8d539bc3c2720053de1a1a78a89
SSDEEP

1536:ROOKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgG7HuS4VcTO9/r7UYdEJeZ:RBKpb8rGYrMPe3q7Q0XV5xtezEsi8/dE

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://centaurussits.com/assets/FL/

xlm40.dropper

http://cansal.cl/cgi-bin/besSIJTfOk0DtHZR/

xlm40.dropper

http://chalkie.me.uk/cgi-bin/gMLuebzG2RskkJXwY/

xlm40.dropper

http://www.cecambrils.cat/wp-content/0KwOSfNDESlzVMoc/

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	3752	1744	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4688	1744	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5016	1744	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	560	1744	regsvr32.exe	82

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1744	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1744	EXCEL.EXE
1744	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 3752	1744	EXCEL.EXE	87
PID 1744 wrote to memory of 3752	1744	EXCEL.EXE	87
PID 1744 wrote to memory of 4688	1744	EXCEL.EXE	88
PID 1744 wrote to memory of 4688	1744	EXCEL.EXE	88
PID 1744 wrote to memory of 5016	1744	EXCEL.EXE	89
PID 1744 wrote to memory of 5016	1744	EXCEL.EXE	89
PID 1744 wrote to memory of 560	1744	EXCEL.EXE	92
PID 1744 wrote to memory of 560	1744	EXCEL.EXE	92

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\4df811184804a69909d21aa8a20da6902590c2871fdf84d2290f6b911448c365.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:1744
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui1.ocx
  2⤵
  - Process spawned unexpected child process
  PID:3752
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui2.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4688
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui3.ocx
  2⤵
  - Process spawned unexpected child process
  PID:5016
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui4.ocx
  2⤵
  - Process spawned unexpected child process
  PID:560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

C:\Users\Admin\cui2.ocx

Filesize
7KB

MD5
dcfafe69488bf47959fcff230e6d9ae6

SHA1
fff6e8a21e4e2f87799283297f62edd8bbe3b607

SHA256
9a6bbdef7220261d41de649a2008ead2ba3ceed25ddccdb6d46e9edcbb699e14

SHA512
7655391c265e349a7283bd94e76b2854b1f79f640bbee36c255408b1fb1923480f6efda052f1a34d32641a3bbd4786fef9da7c0a8ad7ecd1fcd4fa5c0db9aed4

Download Submit
memory/1744-5-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-2-0x00007FF8FD330000-0x00007FF8FD340000-memory.dmp

Filesize
64KB

Download
memory/1744-14-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-1-0x00007FF93D34D000-0x00007FF93D34E000-memory.dmp

Filesize
4KB

Download
memory/1744-7-0x00007FF8FD330000-0x00007FF8FD340000-memory.dmp

Filesize
64KB

Download
memory/1744-6-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-9-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-10-0x00007FF8FAF70000-0x00007FF8FAF80000-memory.dmp

Filesize
64KB

Download
memory/1744-15-0x00007FF8FAF70000-0x00007FF8FAF80000-memory.dmp

Filesize
64KB

Download
memory/1744-0-0x00007FF8FD330000-0x00007FF8FD340000-memory.dmp

Filesize
64KB

Download
memory/1744-35-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-4-0x00007FF8FD330000-0x00007FF8FD340000-memory.dmp

Filesize
64KB

Download
memory/1744-11-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-16-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-18-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-17-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-12-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-8-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-3-0x00007FF8FD330000-0x00007FF8FD340000-memory.dmp

Filesize
64KB

Download
memory/1744-33-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download
memory/1744-34-0x00007FF93D34D000-0x00007FF93D34E000-memory.dmp

Filesize
4KB

Download
memory/1744-13-0x00007FF93D2B0000-0x00007FF93D4A5000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads