nloader | 7c2dae7cfc7b469c26b14d5cf7aed0e063ab8f854c7563d1e7fca448e6827a05

General

Target

cancel_sub_JPLyeahyourenotgettingmynumber.xlsb
Size

264KB
MD5

f1b51acf675dd0973ce3ec78fd9a1859
SHA1

83e8858f1d6a849151289a7c507a740d59e5da79
SHA256

7c2dae7cfc7b469c26b14d5cf7aed0e063ab8f854c7563d1e7fca448e6827a05
SHA512

9ce754214b348348fbdbdc933a61c9f01646f8021769c1c683fe1eb7d5af59e22950226233244cd7f304944164b46a55d708a668e01cf115085466357b766b43

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	1164	1200	cmd.exe	24

Nloader Payload 1 IoCs

resource	yara_rule
behavioral1/memory/468-72-0x00000000000F0000-0x00000000000F5000-memory.dmp	nloader

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	468	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
468	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\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	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 (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\Toolbar\ShowDiscussionButton = "Yes"	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
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\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
1200	EXCEL.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1200	EXCEL.EXE
1200	EXCEL.EXE
1200	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 1468	1200	EXCEL.EXE	26
PID 1200 wrote to memory of 1468	1200	EXCEL.EXE	26
PID 1200 wrote to memory of 1468	1200	EXCEL.EXE	26
PID 1200 wrote to memory of 1468	1200	EXCEL.EXE	26
PID 1200 wrote to memory of 1164	1200	EXCEL.EXE	31
PID 1200 wrote to memory of 1164	1200	EXCEL.EXE	31
PID 1200 wrote to memory of 1164	1200	EXCEL.EXE	31
PID 1200 wrote to memory of 1164	1200	EXCEL.EXE	31
PID 1164 wrote to memory of 1884	1164	cmd.exe	33
PID 1164 wrote to memory of 1884	1164	cmd.exe	33
PID 1164 wrote to memory of 1884	1164	cmd.exe	33
PID 1164 wrote to memory of 1884	1164	cmd.exe	33
PID 1164 wrote to memory of 468	1164	cmd.exe	34
PID 1164 wrote to memory of 468	1164	cmd.exe	34
PID 1164 wrote to memory of 468	1164	cmd.exe	34
PID 1164 wrote to memory of 468	1164	cmd.exe	34
PID 1164 wrote to memory of 468	1164	cmd.exe	34
PID 1164 wrote to memory of 468	1164	cmd.exe	34
PID 1164 wrote to memory of 468	1164	cmd.exe	34

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_JPLyeahyourenotgettingmynumber.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:1468
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c certutil -decode C:\Users\Public\4802545.xs1 C:\Users\Public\4802545.xs2 && rundll32 C:\Users\Public\4802545.xs2,DF1
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:1164
- - C:\Windows\SysWOW64\certutil.exe
    certutil -decode C:\Users\Public\4802545.xs1 C:\Users\Public\4802545.xs2
    3⤵
    PID:1884
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32 C:\Users\Public\4802545.xs2,DF1
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    PID:468

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/468-72-0x00000000000F0000-0x00000000000F5000-memory.dmp

Filesize
20KB

Download
memory/1200-60-0x0000000071AD1000-0x0000000071AD3000-memory.dmp

Filesize
8KB

Download
memory/1200-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1200-59-0x000000002F9A1000-0x000000002F9A4000-memory.dmp

Filesize
12KB

Download
memory/1200-74-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1468-63-0x000007FEFC221000-0x000007FEFC223000-memory.dmp

Filesize
8KB

Download
memory/1884-66-0x00000000768B1000-0x00000000768B3000-memory.dmp

Filesize
8KB

Download

Analysis

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