894658b992050ab6d7ee061f083a48264ce56c1b4fbc5ac87c142765405a47f7

General

Target

vclurtyw.xlsm
Size

50KB
MD5

793c5a832ea9b3c4a225bc96b4449bc2
SHA1

168afc78144b659b18b606a26c3e9a6343dd104a
SHA256

894658b992050ab6d7ee061f083a48264ce56c1b4fbc5ac87c142765405a47f7
SHA512

df041addb6c8113b2add5439f8ce258016233a47a13a3d540187872e4ac25fe3ac87b016bb391a703e0cb73189f1720c0e723b6df47ef971238312ed77a9b607

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://harleyqueretaro.com/renew2019/Back2016-12-22/cv/data/RjuiFMp4Fsp/

Signatures

Process spawned unexpected child process 1 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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1824	1664	regsvr32.exe	26

Downloads MZ/PE file

Loads dropped DLL 1 IoCs

pid	Process
1824	regsvr32.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1664	EXCEL.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1664	EXCEL.EXE
1664	EXCEL.EXE
1664	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1664 wrote to memory of 1824	1664	EXCEL.EXE	29
PID 1664 wrote to memory of 1824	1664	EXCEL.EXE	29
PID 1664 wrote to memory of 1824	1664	EXCEL.EXE	29
PID 1664 wrote to memory of 1824	1664	EXCEL.EXE	29
PID 1664 wrote to memory of 1824	1664	EXCEL.EXE	29
PID 1664 wrote to memory of 1824	1664	EXCEL.EXE	29
PID 1664 wrote to memory of 1824	1664	EXCEL.EXE	29

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\vclurtyw.xlsm
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1664
- C:\Windows\SysWow64\regsvr32.exe
  C:\Windows\SysWow64\regsvr32.exe -s ..\rulm.dll
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  PID:1824

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\rulm.dll

Filesize
848KB

MD5
26bf9a27e1ae4680db6c0528579aa5d5

SHA1
1c606018e5dc1bd2189b88216ea82c59f72449e9

SHA256
7a2b948dfa606620068203247663247cb95c4a64fde2fa6e522a0a2828027352

SHA512
d91d47ac63a24fed894e460e4d03fe2f23636d0f1a561f267007e0d1910424f437a3c8a38100c6b81c2824c50a76cc3c777158023608643f83c29545fcf6b2fb

Download Submit
\Users\Admin\rulm.dll

Filesize
848KB

MD5
26bf9a27e1ae4680db6c0528579aa5d5

SHA1
1c606018e5dc1bd2189b88216ea82c59f72449e9

SHA256
7a2b948dfa606620068203247663247cb95c4a64fde2fa6e522a0a2828027352

SHA512
d91d47ac63a24fed894e460e4d03fe2f23636d0f1a561f267007e0d1910424f437a3c8a38100c6b81c2824c50a76cc3c777158023608643f83c29545fcf6b2fb

Download Submit
memory/1664-54-0x000000002FFD1000-0x000000002FFD4000-memory.dmp

Filesize
12KB

Download
memory/1664-55-0x00000000713D1000-0x00000000713D3000-memory.dmp

Filesize
8KB

Download
memory/1664-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1664-57-0x00000000723BD000-0x00000000723C8000-memory.dmp

Filesize
44KB

Download
memory/1664-58-0x00000000755B1000-0x00000000755B3000-memory.dmp

Filesize
8KB

Download

Analysis

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