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.

Processes:

cmd.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1164	1200	cmd.exe	EXCEL.EXE

Nloader Payload 1 IoCs

Processes:

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

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

4 468 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

468 rundll32.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

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

flow	pid	process
4	468	rundll32.exe

pid	process
468	rundll32.exe

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

pid process

1200 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1200 EXCEL.EXE
1200 EXCEL.EXE
1200 EXCEL.EXE

pid	process
1200	EXCEL.EXE

pid	process
1200	EXCEL.EXE
1200	EXCEL.EXE
1200	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1200 wrote to memory of 1468	1200	EXCEL.EXE	splwow64.exe
PID 1200 wrote to memory of 1468	1200	EXCEL.EXE	splwow64.exe
PID 1200 wrote to memory of 1468	1200	EXCEL.EXE	splwow64.exe
PID 1200 wrote to memory of 1468	1200	EXCEL.EXE	splwow64.exe
PID 1200 wrote to memory of 1164	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 1164	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 1164	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 1164	1200	EXCEL.EXE	cmd.exe
PID 1164 wrote to memory of 1884	1164	cmd.exe	certutil.exe
PID 1164 wrote to memory of 1884	1164	cmd.exe	certutil.exe
PID 1164 wrote to memory of 1884	1164	cmd.exe	certutil.exe
PID 1164 wrote to memory of 1884	1164	cmd.exe	certutil.exe
PID 1164 wrote to memory of 468	1164	cmd.exe	rundll32.exe
PID 1164 wrote to memory of 468	1164	cmd.exe	rundll32.exe
PID 1164 wrote to memory of 468	1164	cmd.exe	rundll32.exe
PID 1164 wrote to memory of 468	1164	cmd.exe	rundll32.exe
PID 1164 wrote to memory of 468	1164	cmd.exe	rundll32.exe
PID 1164 wrote to memory of 468	1164	cmd.exe	rundll32.exe
PID 1164 wrote to memory of 468	1164	cmd.exe	rundll32.exe

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

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Downloads

C:\Users\Public\4802545.xs1

MD5
e3c91eeeec07ed08ff35991cd1f8926d

SHA1
7f4b8b7a2968977de612be4938e4d2563b388884

SHA256
975509717b69e7c6dc7e20ac3421f710591df6b8b08f1fd93b042e44403db0b9

SHA512
389f20e6f01a0a6707ad2aadce542612b3fbefeb7a586d140a471f765c84a1ec55ae19f1c4bef8d353881e1fdb16f2ae33cd9cfb3aae342f10628e54b51246da

Download Submit
C:\Users\Public\4802545.xs2

MD5
cfb94c893280fd1edd40a4c74031727a

SHA1
9bf1f365e14842621854282f976b890478816a77

SHA256
3205ebcea1f138f0171ff3815d594883805b4af48a24bc0d6228d0b0ee12ddb4

SHA512
31b573054e5963c939cab24b48a8610f757ea94eba21c5101f2df3ffd8fc3120327795692feda7d448091a93b4befb389eed48e17662d7f2e3b19cc441a56988

Download Submit
\Users\Public\4802545.xs2

MD5
cfb94c893280fd1edd40a4c74031727a

SHA1
9bf1f365e14842621854282f976b890478816a77

SHA256
3205ebcea1f138f0171ff3815d594883805b4af48a24bc0d6228d0b0ee12ddb4

SHA512
31b573054e5963c939cab24b48a8610f757ea94eba21c5101f2df3ffd8fc3120327795692feda7d448091a93b4befb389eed48e17662d7f2e3b19cc441a56988

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

Filesize
20KB

Download
memory/468-68-0x0000000000000000-mapping.dmp

Download
memory/1164-64-0x0000000000000000-mapping.dmp

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/1468-62-0x0000000000000000-mapping.dmp

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

Filesize
8KB

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

Filesize
8KB

Download
memory/1884-65-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads