zloader | d91912b4b945e88e881e54573390e6723cfc41916b6546453b59e60f9beee337

Analysis

max time kernel
1739s
max time network
1743s
platform
windows10_x64
resource
win10v20201028
submitted
20-11-2020 14:34

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General

Target

08751be484e1572995ebb085df1c2c6372084d63a64dce7fab28130d79a6ea2d.exe.dll

Score

10^/10

zloader main 26.02.2020 botnet persistence trojan

Malware Config

Extracted

Family

zloader

Botnet

main

Campaign

26.02.2020

https://airnaa.org/sound.php

https://banog.org/sound.php

https://rayonch.org/sound.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
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\Icufhyig = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Afif\\ydceid.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

regsvr32.exe

description pid process target process

PID 736 set thread context of 3276 736 regsvr32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 3276 msiexec.exe
Token: SeSecurityPrivilege 3276 msiexec.exe

description	pid	process	target process
PID 736 set thread context of 3276	736	regsvr32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	3276	msiexec.exe
Token: SeSecurityPrivilege	3276	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

regsvr32.exeregsvr32.exe

description	pid	process	target process
PID 3456 wrote to memory of 736	3456	regsvr32.exe	regsvr32.exe
PID 3456 wrote to memory of 736	3456	regsvr32.exe	regsvr32.exe
PID 3456 wrote to memory of 736	3456	regsvr32.exe	regsvr32.exe
PID 736 wrote to memory of 3276	736	regsvr32.exe	msiexec.exe
PID 736 wrote to memory of 3276	736	regsvr32.exe	msiexec.exe
PID 736 wrote to memory of 3276	736	regsvr32.exe	msiexec.exe
PID 736 wrote to memory of 3276	736	regsvr32.exe	msiexec.exe
PID 736 wrote to memory of 3276	736	regsvr32.exe	msiexec.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\08751be484e1572995ebb085df1c2c6372084d63a64dce7fab28130d79a6ea2d.exe.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3456
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\08751be484e1572995ebb085df1c2c6372084d63a64dce7fab28130d79a6ea2d.exe.dll
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:736
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    PID:3276

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/736-0-0x0000000000000000-mapping.dmp

Download
memory/3276-1-0x0000000000600000-0x0000000000625000-memory.dmp

Filesize
148KB

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memory/3276-2-0x0000000000000000-mapping.dmp

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