zloader | 725241d30addb0c0c9a9146207376d14bf826fb4cf23150ae9fdc09186da86c0

Resubmissions

02-11-2020 07:54

201102-sxyb7dzean 10

31-10-2020 02:22

201031-z87fysp3nn 1

Analysis

max time kernel
200s
max time network
202s
platform
windows7_x64
resource
win7v20201028
submitted
02-11-2020 07:54

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Report Analysis Logs

General

Target

kFQR.dll
Size

277KB
MD5

fd0a2b6c6203e4b56d8c73f6323d5d68
SHA1

e87f8d9f7e768f4169355ffda625a80f0e00decb
SHA256

a4711adb921498e7c74af3fd05daaa525f261e7044d457e905dad66767e5b8b4
SHA512

85bc1fd3fba441bbb67d6b75c3f058f2acec396299a012bc0c4ba5c1a5a105c712c54f258a58dc5ef2ef7789a58227d4ce99d14f53ceaf5c3cebdd44fe930c3a

Score

10^/10

zloader nut 30/10 botnet trojan

Malware Config

Extracted

Family

zloader

Botnet

nut

Campaign

30/10

https://creditoacumuladoicms.com.br/npnegt.php

https://morgadoent.co.za/fp3jsl.php

https://access-one.us/clkgmw.php

https://amazonuniverse.in/dgxcee.php

https://ntandingsundhosmala.tk/wp-smarts.php

rc4.plain

rsa_pubkey.plain

Signatures

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1664 created 1248 1664 rundll32.exe Explorer.EXE
Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader

description	pid	process	target process
PID 1664 created 1248	1664	rundll32.exe	Explorer.EXE

Blacklisted process makes network request 26 IoCs

Processes:

msiexec.exe

flow	pid	process
6	1224	msiexec.exe
7	1224	msiexec.exe
8	1224	msiexec.exe
9	1224	msiexec.exe
10	1224	msiexec.exe
11	1224	msiexec.exe
12	1224	msiexec.exe
13	1224	msiexec.exe
14	1224	msiexec.exe
15	1224	msiexec.exe
16	1224	msiexec.exe
17	1224	msiexec.exe
18	1224	msiexec.exe
19	1224	msiexec.exe
20	1224	msiexec.exe
21	1224	msiexec.exe
22	1224	msiexec.exe
23	1224	msiexec.exe
24	1224	msiexec.exe
25	1224	msiexec.exe
26	1224	msiexec.exe
28	1224	msiexec.exe
29	1224	msiexec.exe
30	1224	msiexec.exe
32	1224	msiexec.exe
33	1224	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1664 set thread context of 1224 1664 rundll32.exe msiexec.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

rundll32.exe

pid process

1664 rundll32.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

rundll32.exemsiexec.exe

description pid process

Token: SeDebugPrivilege 1664 rundll32.exe
Token: SeSecurityPrivilege 1224 msiexec.exe
Token: SeSecurityPrivilege 1224 msiexec.exe

description	pid	process	target process
PID 1664 set thread context of 1224	1664	rundll32.exe	msiexec.exe

pid	process
1664	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	1664	rundll32.exe
Token: SeSecurityPrivilege	1224	msiexec.exe
Token: SeSecurityPrivilege	1224	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1700 wrote to memory of 1664	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1664	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1664	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1664	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1664	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1664	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 1664	1700	rundll32.exe	rundll32.exe
PID 1664 wrote to memory of 1224	1664	rundll32.exe	msiexec.exe
PID 1664 wrote to memory of 1224	1664	rundll32.exe	msiexec.exe
PID 1664 wrote to memory of 1224	1664	rundll32.exe	msiexec.exe
PID 1664 wrote to memory of 1224	1664	rundll32.exe	msiexec.exe
PID 1664 wrote to memory of 1224	1664	rundll32.exe	msiexec.exe
PID 1664 wrote to memory of 1224	1664	rundll32.exe	msiexec.exe
PID 1664 wrote to memory of 1224	1664	rundll32.exe	msiexec.exe
PID 1664 wrote to memory of 1224	1664	rundll32.exe	msiexec.exe
PID 1664 wrote to memory of 1224	1664	rundll32.exe	msiexec.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1248

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\kFQR.dll,#1
2⤵
- Suspicious use of WriteProcessMemory
PID:1700

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\kFQR.dll,#1
3⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
2⤵
- Blacklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
PID:1224

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1224-2-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/1224-1-0x0000000000090000-0x00000000000B6000-memory.dmp

Filesize
152KB

Download
memory/1224-3-0x0000000000090000-0x00000000000B6000-memory.dmp

Filesize
152KB

Download
memory/1224-4-0x0000000000000000-mapping.dmp

Download
memory/1648-5-0x000007FEF7D90000-0x000007FEF800A000-memory.dmp

Filesize
2.5MB

Download
memory/1664-0-0x0000000000000000-mapping.dmp

Download