e443c61de95ddab96eb2f2658ace7b6d9b03dc3b9b37068396ecd655eb543aec

Analysis

max time kernel
69s
max time network
9s
platform
windows7_x64
resource
win7v20210410
submitted
14-04-2021 14:19

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General

Target

documents-1472621861.xlsb
Size

94KB
MD5

7046115d4093bb8a33ae64df0a85c4dd
SHA1

602a43d4665ea83f3e1d0f1bc27ce83f515e6360
SHA256

e443c61de95ddab96eb2f2658ace7b6d9b03dc3b9b37068396ecd655eb543aec
SHA512

99c0183e937ab6a272fc4fda56eb4eac1e845d1f99a994290e3b380974e973be340b972d5d5186377f5448d949133b7e00790dbd05869b56bd2916c111dc1ef5

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://theottomandoner.co.uk/drms/bb.html

xlm40.dropper

http://paufderhar07ol.ru.com/bb.html

xlm40.dropper

http://nicolette7107gq.ru.com/bb.html

xlm40.dropper

https://chocolateuncle.online/drms/bb.html

xlm40.dropper

https://cablenet.com.ec/drms/bb.html

Signatures

Process spawned unexpected child process 5 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	1252	452	rundll32.exe	24
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1460	452	rundll32.exe	24
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	740	452	rundll32.exe	24
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1856	452	rundll32.exe	24
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	296	452	rundll32.exe	24

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
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
452	EXCEL.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
452	EXCEL.EXE
452	EXCEL.EXE
452	EXCEL.EXE

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 452 wrote to memory of 1252	452	EXCEL.EXE	31
PID 452 wrote to memory of 1252	452	EXCEL.EXE	31
PID 452 wrote to memory of 1252	452	EXCEL.EXE	31
PID 452 wrote to memory of 1252	452	EXCEL.EXE	31
PID 452 wrote to memory of 1252	452	EXCEL.EXE	31
PID 452 wrote to memory of 1252	452	EXCEL.EXE	31
PID 452 wrote to memory of 1252	452	EXCEL.EXE	31
PID 452 wrote to memory of 1460	452	EXCEL.EXE	32
PID 452 wrote to memory of 1460	452	EXCEL.EXE	32
PID 452 wrote to memory of 1460	452	EXCEL.EXE	32
PID 452 wrote to memory of 1460	452	EXCEL.EXE	32
PID 452 wrote to memory of 1460	452	EXCEL.EXE	32
PID 452 wrote to memory of 1460	452	EXCEL.EXE	32
PID 452 wrote to memory of 1460	452	EXCEL.EXE	32
PID 452 wrote to memory of 740	452	EXCEL.EXE	33
PID 452 wrote to memory of 740	452	EXCEL.EXE	33
PID 452 wrote to memory of 740	452	EXCEL.EXE	33
PID 452 wrote to memory of 740	452	EXCEL.EXE	33
PID 452 wrote to memory of 740	452	EXCEL.EXE	33
PID 452 wrote to memory of 740	452	EXCEL.EXE	33
PID 452 wrote to memory of 740	452	EXCEL.EXE	33
PID 452 wrote to memory of 1856	452	EXCEL.EXE	34
PID 452 wrote to memory of 1856	452	EXCEL.EXE	34
PID 452 wrote to memory of 1856	452	EXCEL.EXE	34
PID 452 wrote to memory of 1856	452	EXCEL.EXE	34
PID 452 wrote to memory of 1856	452	EXCEL.EXE	34
PID 452 wrote to memory of 1856	452	EXCEL.EXE	34
PID 452 wrote to memory of 1856	452	EXCEL.EXE	34
PID 452 wrote to memory of 296	452	EXCEL.EXE	35
PID 452 wrote to memory of 296	452	EXCEL.EXE	35
PID 452 wrote to memory of 296	452	EXCEL.EXE	35
PID 452 wrote to memory of 296	452	EXCEL.EXE	35
PID 452 wrote to memory of 296	452	EXCEL.EXE	35
PID 452 wrote to memory of 296	452	EXCEL.EXE	35
PID 452 wrote to memory of 296	452	EXCEL.EXE	35

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\documents-1472621861.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:452
- C:\Windows\SysWOW64\rundll32.exe
  rundll32 ..\wiroe.oer1,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:1252
- C:\Windows\SysWOW64\rundll32.exe
  rundll32 ..\wiroe.oer2,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:1460
- C:\Windows\SysWOW64\rundll32.exe
  rundll32 ..\wiroe.oer3,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:740
- C:\Windows\SysWOW64\rundll32.exe
  rundll32 ..\wiroe.oer4,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:1856
- C:\Windows\SysWOW64\rundll32.exe
  rundll32 ..\wiroe.oer5,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:296

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/452-60-0x000000002F191000-0x000000002F194000-memory.dmp

Filesize
12KB

Download
memory/452-61-0x0000000071581000-0x0000000071583000-memory.dmp

Filesize
8KB

Download
memory/452-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1252-64-0x00000000753E1000-0x00000000753E3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads