nloader | aae405fadf4b0bf7c724c9b313967fc04e2216d7ec7571be3686117816bc4a62 | Triage

Analysis

max time kernel
14s
max time network
110s
platform
windows10_x64
resource
win10v20210408
submitted
14-04-2021 02:30

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General

Target

14118.biy.dll
Size

42KB
MD5

64ee7574265691eb7636af9de468ce11
SHA1

66486c4d36d82d0c2eaefe4d6cf170224b1fb1af
SHA256

df16b3c76350f340988759cc21a78a7cf16831f08e95eb7592b86942859f863a
SHA512

6a2d2b1c19bfe05af7457d5faf61f1bcaebed1955f3210b62c187a51242f4fd565b479be38e36facbda9ef45d3f80d41e491e550bef027ad33d33e851970de70

Score

10^/10

nloader loader

Malware Config

Signatures

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

Nloader Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/688-115-0x00000000005E0000-0x00000000005E5000-memory.dmp	nloader

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2920 688 WerFault.exe rundll32.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

WerFault.exe

pid	process
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe
2920	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 2920 WerFault.exe
Token: SeBackupPrivilege 2920 WerFault.exe
Token: SeDebugPrivilege 2920 WerFault.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 3008 wrote to memory of 688	3008	rundll32.exe	rundll32.exe
PID 3008 wrote to memory of 688	3008	rundll32.exe	rundll32.exe
PID 3008 wrote to memory of 688	3008	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\14118.biy.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3008

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\14118.biy.dll,#1
2⤵
PID:688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 688 -s 808
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2920

Network

MITRE ATT&CK Matrix

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Downloads

memory/688-114-0x0000000000000000-mapping.dmp

Download
memory/688-115-0x00000000005E0000-0x00000000005E5000-memory.dmp

Filesize
20KB

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