zloader | 98a58a4f1a0b1305c473eeafa6dac80c2e2edd7e8aa8fe6d32ccac81318de1e5

Analysis

max time kernel
102s
max time network
103s
platform
windows10_x64
resource
win10v20201028
submitted
09/11/2020, 20:54

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General

Target
zte.dll
Size 473KB
Sample201109-31fgec9e6e
SHA256 98a58a4f1a0b1305c473eeafa6dac80c2e2edd7e8aa8fe6d32ccac81318de1e5
MD5 00cc931e3c4ce21eaed78d8ee7352c35
SHA1 ee66e9cb16520de48a1efe4e09368067d9ee1a78
SHA512 1ba56fe37631544d8c0238183bf04aed3ffad09999183fef18bb84493502cfc7a3c4109f03062e0ef5b31f00a923e9b8e01eac1e788e52d66b074c2f8f5a16cb
MD5 SHA1 SHA512

Score

10^/10

zloader botnet persistence trojan

Malware Config

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\Xyzy = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Ceasl\\utopodel.dll"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1232 set thread context of 2528	1232	rundll32.exe	80

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSecurityPrivilege	2528	msiexec.exe
Token: SeSecurityPrivilege	2528	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1036 wrote to memory of 1232	1036	rundll32.exe	70
PID 1036 wrote to memory of 1232	1036	rundll32.exe	70
PID 1036 wrote to memory of 1232	1036	rundll32.exe	70
PID 1232 wrote to memory of 2528	1232	rundll32.exe	80
PID 1232 wrote to memory of 2528	1232	rundll32.exe	80
PID 1232 wrote to memory of 2528	1232	rundll32.exe	80
PID 1232 wrote to memory of 2528	1232	rundll32.exe	80
PID 1232 wrote to memory of 2528	1232	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zte.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1036
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\zte.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1232
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    PID:2528

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/2528-1-0x0000000002C60000-0x0000000002C8B000-memory.dmp

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