nloader | 49e315aa89bf10972518c3069a767c869bbf7027c298afd11ab21040285b3f9e

General

Target

cancel_sub_JPL12345678901234.xlsb
Size

260KB
MD5

80fdec003c86c583473a9fbbabf40d2f
SHA1

991940040a50a0be56572e4a9ab73d6d4dbab050
SHA256

49e315aa89bf10972518c3069a767c869bbf7027c298afd11ab21040285b3f9e
SHA512

022475db6593d15bdcc1411f7c3b88a8822311f621506401ad3ba33ddc2a52ae6e97e4357e3742bf59ef287c033f5363cb5d2021be793d5552a3a8b73b85cfa5

Score

10^/10

nloader loader

Malware Config

Extracted

Language

xlm4.0

Source

Signatures

Nloader
Simple loader that includes the keyword 'campo' in the URL used to download other families.
loader nloader

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	740	1100	cmd.exe	24

Nloader Payload 1 IoCs

resource	yara_rule
behavioral1/memory/968-70-0x00000000001E0000-0x00000000001E5000-memory.dmp	nloader

Blocklisted process makes network request 1 IoCs

flow	pid	Process
6	968	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
968	rundll32.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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
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 (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
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
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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1100	EXCEL.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1100	EXCEL.EXE
1100	EXCEL.EXE
1100	EXCEL.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 740	1100	EXCEL.EXE	30
PID 1100 wrote to memory of 740	1100	EXCEL.EXE	30
PID 1100 wrote to memory of 740	1100	EXCEL.EXE	30
PID 1100 wrote to memory of 740	1100	EXCEL.EXE	30
PID 740 wrote to memory of 304	740	cmd.exe	32
PID 740 wrote to memory of 304	740	cmd.exe	32
PID 740 wrote to memory of 304	740	cmd.exe	32
PID 740 wrote to memory of 304	740	cmd.exe	32
PID 740 wrote to memory of 968	740	cmd.exe	33
PID 740 wrote to memory of 968	740	cmd.exe	33
PID 740 wrote to memory of 968	740	cmd.exe	33
PID 740 wrote to memory of 968	740	cmd.exe	33
PID 740 wrote to memory of 968	740	cmd.exe	33
PID 740 wrote to memory of 968	740	cmd.exe	33
PID 740 wrote to memory of 968	740	cmd.exe	33

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\cancel_sub_JPL12345678901234.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1100
- C:\Windows\SysWOW64\cmd.exe
  cmd /c certutil -decode C:\Users\Public\5015.x1 C:\Users\Public\5015.x2 && rundll32 C:\Users\Public\5015.x2,DF1
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:740
- - C:\Windows\SysWOW64\certutil.exe
    certutil -decode C:\Users\Public\5015.x1 C:\Users\Public\5015.x2
    3⤵
    PID:304
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32 C:\Users\Public\5015.x2,DF1
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    PID:968

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

memory/304-64-0x00000000753B1000-0x00000000753B3000-memory.dmp

Filesize
8KB

Download
memory/968-70-0x00000000001E0000-0x00000000001E5000-memory.dmp

Filesize
20KB

Download
memory/1100-59-0x000000002F9C1000-0x000000002F9C4000-memory.dmp

Filesize
12KB

Download
memory/1100-60-0x00000000713F1000-0x00000000713F3000-memory.dmp

Filesize
8KB

Download
memory/1100-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

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