zloader | 4f1b67de033cb3d692e494a0104243edb1504185df21e5086dba1d10d941c12a

General

Target

4f1b67de033cb3d692e494a0104243edb1504185df21e5086dba1d10d941c12a.dll
Size

877KB
MD5

4773b4f06e91d998f15f56986eca1c04
SHA1

47bd5aa4356028de73fde18268e4891bf7ec5aae
SHA256

4f1b67de033cb3d692e494a0104243edb1504185df21e5086dba1d10d941c12a
SHA512

6709ee7c50729eab38b0ab6fc72948fa66458c277d9109e605824105827db87d9c34e7559c4a9a7c7e2f3908f8c4ac49be587e9210928c99757a600a3b9d3c77

Score

10^/10

zloader main 20.04.2020 botnet persistence trojan

Malware Config

Extracted

Family

zloader

Botnet

main

Campaign

20.04.2020

C2

https://tremood.com/sound.php

https://soceneo.com/sound.php

https://baatiot.com/sound.php

https://welefus.com/sound.php

https://maremeo.com/sound.php

Attributes

build_id
41

rc4.plain

Signatures

Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\Kuwity = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Gyahk\\kicy.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1504 set thread context of 1720 1504 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1720 msiexec.exe
Token: SeSecurityPrivilege 1720 msiexec.exe

description	pid	process	target process
PID 1504 set thread context of 1720	1504	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1720	msiexec.exe
Token: SeSecurityPrivilege	1720	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1668 wrote to memory of 1504	1668	rundll32.exe	rundll32.exe
PID 1668 wrote to memory of 1504	1668	rundll32.exe	rundll32.exe
PID 1668 wrote to memory of 1504	1668	rundll32.exe	rundll32.exe
PID 1668 wrote to memory of 1504	1668	rundll32.exe	rundll32.exe
PID 1668 wrote to memory of 1504	1668	rundll32.exe	rundll32.exe
PID 1668 wrote to memory of 1504	1668	rundll32.exe	rundll32.exe
PID 1668 wrote to memory of 1504	1668	rundll32.exe	rundll32.exe
PID 1504 wrote to memory of 1720	1504	rundll32.exe	msiexec.exe
PID 1504 wrote to memory of 1720	1504	rundll32.exe	msiexec.exe
PID 1504 wrote to memory of 1720	1504	rundll32.exe	msiexec.exe
PID 1504 wrote to memory of 1720	1504	rundll32.exe	msiexec.exe
PID 1504 wrote to memory of 1720	1504	rundll32.exe	msiexec.exe
PID 1504 wrote to memory of 1720	1504	rundll32.exe	msiexec.exe
PID 1504 wrote to memory of 1720	1504	rundll32.exe	msiexec.exe
PID 1504 wrote to memory of 1720	1504	rundll32.exe	msiexec.exe
PID 1504 wrote to memory of 1720	1504	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4f1b67de033cb3d692e494a0104243edb1504185df21e5086dba1d10d941c12a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1668

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4f1b67de033cb3d692e494a0104243edb1504185df21e5086dba1d10d941c12a.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1504

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:1720

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1504-55-0x0000000075831000-0x0000000075833000-memory.dmp

Filesize
8KB

Download
memory/1504-56-0x0000000000270000-0x00000000002BD000-memory.dmp

Filesize
308KB

Download
memory/1504-57-0x0000000010000000-0x00000000100DF000-memory.dmp

Filesize
892KB

Download
memory/1720-59-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1720-58-0x00000000000D0000-0x0000000000102000-memory.dmp

Filesize
200KB

Download
memory/1720-60-0x00000000000D0000-0x0000000000102000-memory.dmp

Filesize
200KB

Download
memory/1720-62-0x00000000000D0000-0x0000000000102000-memory.dmp

Filesize
200KB

Download

Analysis

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