zloader | 6348bded936831629494c1d820fe8e3dbe3fb4d9f96940bbb4ca0c1872bef0ad

Resubmissions

14-04-2022 02:16

220414-cp91kagbem 10

04-10-2021 22:37

211004-2jzp3shcgp 10

Analysis

max time kernel
146s
max time network
148s
platform
windows7_x64
resource
win7-en-20210920
submitted
04-10-2021 22:37

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General

Target

tmp.dll
Size

444KB
MD5

c6b350b0d6f8dc37c144f76a57c9dbe7
SHA1

e637d8a29d46281a5fa97d84af1dfe1d72223157
SHA256

6348bded936831629494c1d820fe8e3dbe3fb4d9f96940bbb4ca0c1872bef0ad
SHA512

5220ff154b731a8a1d1e768552fee037cacb12412eff931384c105d4caa5483da64c11b4839ab44885214d4d8831b280687b54b2438f89a230fce68bf7692dff

Score

10^/10

zloader 26/03 botnet persistence trojan

Malware Config

Extracted

Family

zloader

Botnet

26/03

https://vfgthujbxd.xyz/milagrecf.php

https://todiks.xyz/milagrecf.php

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
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\Hiyzemqy = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Sana\\yfatr.dll,DllRegisterServer"	msiexec.exe
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1256 set thread context of 1228 1256 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1228 msiexec.exe
Token: SeSecurityPrivilege 1228 msiexec.exe

description	pid	process	target process
PID 1256 set thread context of 1228	1256	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1228	msiexec.exe
Token: SeSecurityPrivilege	1228	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1124 wrote to memory of 1256	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 1256	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 1256	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 1256	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 1256	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 1256	1124	rundll32.exe	rundll32.exe
PID 1124 wrote to memory of 1256	1124	rundll32.exe	rundll32.exe
PID 1256 wrote to memory of 1228	1256	rundll32.exe	msiexec.exe
PID 1256 wrote to memory of 1228	1256	rundll32.exe	msiexec.exe
PID 1256 wrote to memory of 1228	1256	rundll32.exe	msiexec.exe
PID 1256 wrote to memory of 1228	1256	rundll32.exe	msiexec.exe
PID 1256 wrote to memory of 1228	1256	rundll32.exe	msiexec.exe
PID 1256 wrote to memory of 1228	1256	rundll32.exe	msiexec.exe
PID 1256 wrote to memory of 1228	1256	rundll32.exe	msiexec.exe
PID 1256 wrote to memory of 1228	1256	rundll32.exe	msiexec.exe
PID 1256 wrote to memory of 1228	1256	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmp.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1124

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmp.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1256

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:1228

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1228-58-0x0000000000000000-mapping.dmp

Download
memory/1228-60-0x0000000000090000-0x00000000000BE000-memory.dmp

Filesize
184KB

Download
memory/1256-53-0x0000000000000000-mapping.dmp

Download
memory/1256-54-0x0000000075661000-0x0000000075663000-memory.dmp

Filesize
8KB

Download
memory/1256-56-0x0000000074DA0000-0x0000000074E25000-memory.dmp

Filesize
532KB

Download
memory/1256-55-0x0000000074DA0000-0x0000000074DCE000-memory.dmp

Filesize
184KB

Download
memory/1256-57-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download