zloader | d54e97ffba569cdeb7dfb3d4f1202b23368f360b6a1d8cd8472fe4d5650f7513

Analysis

max time kernel
148s
max time network
148s
platform
windows10_x64
resource
win10v20201028
submitted
10/11/2020, 08:55

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General

Target
d54e97ffba569cdeb7dfb3d4f1202b23368f360b6a1d8cd8472fe4d5650f7513.dll
Size 172KB
Sample201110-dvv417j346
SHA256 d54e97ffba569cdeb7dfb3d4f1202b23368f360b6a1d8cd8472fe4d5650f7513
MD5 fdf181c5b4cb29c4cac89576848aa9c1
SHA1 de1f74fab204b3dc89f9c0d18da54bf297655719
SHA512 2a62104931807b68c21448c4977cf28e2f58dde046d219089232e0f32385a02eb39f0beb192d28cb60b82816e5565e9e759df4f644dcb7c75eea7b80a86f24da
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

Blacklisted process makes network request 2 IoCs

flow	pid	Process
18	1356	msiexec.exe
19	1356	msiexec.exe

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\Asifkud = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Suotlo\\wiru.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 388 set thread context of 1356	388	regsvr32.exe	80

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1356	msiexec.exe
Token: SeSecurityPrivilege	1356	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1036 wrote to memory of 388	1036	regsvr32.exe	72
PID 1036 wrote to memory of 388	1036	regsvr32.exe	72
PID 1036 wrote to memory of 388	1036	regsvr32.exe	72
PID 388 wrote to memory of 1356	388	regsvr32.exe	80
PID 388 wrote to memory of 1356	388	regsvr32.exe	80
PID 388 wrote to memory of 1356	388	regsvr32.exe	80
PID 388 wrote to memory of 1356	388	regsvr32.exe	80
PID 388 wrote to memory of 1356	388	regsvr32.exe	80

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\d54e97ffba569cdeb7dfb3d4f1202b23368f360b6a1d8cd8472fe4d5650f7513.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1036
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\d54e97ffba569cdeb7dfb3d4f1202b23368f360b6a1d8cd8472fe4d5650f7513.dll
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:388
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Blacklisted process makes network request
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    PID:1356

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/1356-1-0x0000000002FB0000-0x0000000002FE0000-memory.dmp

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