nloader | 39d99432698540f5ea6b8acf77b2323e2cde143638694bbd726e161924885059

General

Target

order_Z0012112202927225.xlsb
Size

306KB
MD5

7e00f1f0fabe5bf5404589000e61a9af
SHA1

9429673fccc8b550a21ea9582c958f8772497b64
SHA256

39d99432698540f5ea6b8acf77b2323e2cde143638694bbd726e161924885059
SHA512

10faa2e7df209ae1f42be832b56af639769657068165b908e3d13a79c1df460c860b6a3fdfb4c0bb58e36f29104f21a3d218d568f88a1c895601e8a0319a6589

Score

10^/10

nloader loader upx

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	1076	1888	cmd.exe	EXCEL.EXE

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
C:\Users\Public\28222.dr3	acprotect
\Users\Public\28222.dr3	acprotect

Nloader Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1712-70-0x0000000000150000-0x0000000000155000-memory.dmp	nloader

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

5 1712 rundll32.exe

flow	pid	process
5	1712	rundll32.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Public\28222.dr3	upx
\Users\Public\28222.dr3	upx

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

1712 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

pid	process
1712	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
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
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
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1888 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1888 EXCEL.EXE
1888 EXCEL.EXE
1888 EXCEL.EXE

pid	process
1888	EXCEL.EXE

pid	process
1888	EXCEL.EXE
1888	EXCEL.EXE
1888	EXCEL.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1888 wrote to memory of 1076	1888	EXCEL.EXE	cmd.exe
PID 1888 wrote to memory of 1076	1888	EXCEL.EXE	cmd.exe
PID 1888 wrote to memory of 1076	1888	EXCEL.EXE	cmd.exe
PID 1888 wrote to memory of 1076	1888	EXCEL.EXE	cmd.exe
PID 1076 wrote to memory of 1740	1076	cmd.exe	certutil.exe
PID 1076 wrote to memory of 1740	1076	cmd.exe	certutil.exe
PID 1076 wrote to memory of 1740	1076	cmd.exe	certutil.exe
PID 1076 wrote to memory of 1740	1076	cmd.exe	certutil.exe
PID 1076 wrote to memory of 1712	1076	cmd.exe	rundll32.exe
PID 1076 wrote to memory of 1712	1076	cmd.exe	rundll32.exe
PID 1076 wrote to memory of 1712	1076	cmd.exe	rundll32.exe
PID 1076 wrote to memory of 1712	1076	cmd.exe	rundll32.exe
PID 1076 wrote to memory of 1712	1076	cmd.exe	rundll32.exe
PID 1076 wrote to memory of 1712	1076	cmd.exe	rundll32.exe
PID 1076 wrote to memory of 1712	1076	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\order_Z0012112202927225.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1888

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c certutil -decode %PUBLIC%\28222.dr1 %PUBLIC%\28222.dr3 && rundll32 %PUBLIC%\28222.dr3,DF1
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:1076

C:\Windows\SysWOW64\certutil.exe
certutil -decode C:\Users\Public\28222.dr1 C:\Users\Public\28222.dr3
3⤵
PID:1740

C:\Windows\SysWOW64\rundll32.exe
rundll32 C:\Users\Public\28222.dr3,DF1
3⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:1712

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\28222.dr1

MD5
547a4e8b1b3bf3359785479e768fa246

SHA1
37cac8abf0cec4b77ce58ec0aea8e89b25055cd0

SHA256
7f508b27ffbacb48273b11a23e95370361571329887f2b58cec88f75fdfd7ee9

SHA512
204a6964b1d31d117460616e41ff128d58654ce7d70b19b47274023c03be9f62b50189adec670b1486201800c0c65d40f58e8a42c49792b4843e8d675c2b83ad

Download Submit
C:\Users\Public\28222.dr3

MD5
fe696977648eed8a2b0ab9dcdd70aca2

SHA1
50e330e988d0cc66bb0fb245ae1ea127cd185d56

SHA256
3f194bbca9dd7187df2b8495bea52fe861fc90f913e55636f649965da6b1771d

SHA512
100e3b70b139ff4d314eb30c6a6452d3a8352ad81963034f0da782acd2e01440dca1ed2474753afc9da9c1e746386c26fb1ffaa05035a551c5422bfb1a084bd4

Download Submit
\Users\Public\28222.dr3

MD5
fe696977648eed8a2b0ab9dcdd70aca2

SHA1
50e330e988d0cc66bb0fb245ae1ea127cd185d56

SHA256
3f194bbca9dd7187df2b8495bea52fe861fc90f913e55636f649965da6b1771d

SHA512
100e3b70b139ff4d314eb30c6a6452d3a8352ad81963034f0da782acd2e01440dca1ed2474753afc9da9c1e746386c26fb1ffaa05035a551c5422bfb1a084bd4

Download Submit
memory/1076-62-0x0000000000000000-mapping.dmp

Download
memory/1712-66-0x0000000000000000-mapping.dmp

Download
memory/1712-70-0x0000000000150000-0x0000000000155000-memory.dmp

Filesize
20KB

Download
memory/1740-63-0x0000000000000000-mapping.dmp

Download
memory/1740-64-0x0000000075161000-0x0000000075163000-memory.dmp

Filesize
8KB

Download
memory/1888-59-0x000000002F141000-0x000000002F144000-memory.dmp

Filesize
12KB

Download
memory/1888-60-0x0000000070E21000-0x0000000070E23000-memory.dmp

Filesize
8KB

Download
memory/1888-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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