zloader | 23843640cfae43671a48b17dc4fe585a8e37e3767039f82448077c5b54694a57

Analysis

max time kernel
130s
max time network
136s
platform
windows7_x64
resource
win7
submitted
07/07/2020, 07:25

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General

Target

ylyz.dll
Size

332KB
MD5

01fdd1c8cc5e5c69f3d5507a25367263
SHA1

eb992300f7fd49d3723737a39782bd4c46b4e566
SHA256

23843640cfae43671a48b17dc4fe585a8e37e3767039f82448077c5b54694a57
SHA512

97b70cca528e34cb4a18e884169364d07a407a78bd5b25c436612c0316a954e818e51fe3c50fe41197da9972cfd5f6c5d3d3a3921654967784837459ffb3dac8

Score

10^/10

trojan botnet zloader persistence

Malware Config

Signatures

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1060 wrote to memory of 1124	1060	rundll32.exe	24
PID 1060 wrote to memory of 1124	1060	rundll32.exe	24
PID 1060 wrote to memory of 1124	1060	rundll32.exe	24
PID 1060 wrote to memory of 1124	1060	rundll32.exe	24
PID 1060 wrote to memory of 1124	1060	rundll32.exe	24
PID 1060 wrote to memory of 1124	1060	rundll32.exe	24
PID 1060 wrote to memory of 1124	1060	rundll32.exe	24
PID 1124 wrote to memory of 1108	1124	rundll32.exe	27
PID 1124 wrote to memory of 1108	1124	rundll32.exe	27
PID 1124 wrote to memory of 1108	1124	rundll32.exe	27
PID 1124 wrote to memory of 1108	1124	rundll32.exe	27
PID 1124 wrote to memory of 1108	1124	rundll32.exe	27
PID 1124 wrote to memory of 1108	1124	rundll32.exe	27
PID 1124 wrote to memory of 1108	1124	rundll32.exe	27
PID 1124 wrote to memory of 1108	1124	rundll32.exe	27
PID 1124 wrote to memory of 1108	1124	rundll32.exe	27

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1124 set thread context of 1108	1124	rundll32.exe	27

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1108	msiexec.exe
Token: SeSecurityPrivilege	1108	msiexec.exe

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

Adds Run entry 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-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\Exuhy = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Ywqohy\\olwe.dll"	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ylyz.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1060
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ylyz.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  - Suspicious use of SetThreadContext
  PID:1124
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    - Adds Run entry to start application
    PID:1108

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/1108-1-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/1108-2-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/1108-3-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download