zloader | c194e82e8a3ada40421b28e668c9135f09f9336732dc31053fc0cebf7be97564

Resubmissions

17-11-2023 10:11

231117-l79xyshg5x 10

09-11-2020 20:51

201109-e7t1r93kmn 10

Analysis

max time kernel
144s
max time network
147s
platform
windows7_x64
resource
win7v20201028
submitted
09-11-2020 20:51

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General

Target

sustenance.dll
Size

525KB
MD5

d50829ab5499f6ec3a0829515db611d0
SHA1

d6d5ea77c50e01a1472e8ea7dbd1380df65fe0b4
SHA256

c194e82e8a3ada40421b28e668c9135f09f9336732dc31053fc0cebf7be97564
SHA512

104e1e5a50e0928d96cf28c560fbab1006e3cbd049edc661e8512eabee2cc80119e143359a14ff6d6e509c0cd2ea8ef64a137f6010e017a36293485d134a88b9

Score

10^/10

zloader can1 vbsdll5 botnet persistence trojan

Malware Config

Extracted

Family

zloader

Botnet

CAN1

Campaign

VBSDLL5

https://studentsclasses.com/post.php

https://booking-king.com/post.php

rc4.plain

rsa_pubkey.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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\Upgiofgi = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Cyfocy\\zeilu.dll"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1996 set thread context of 1704	1996	rundll32.exe	30

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1704	msiexec.exe
Token: SeSecurityPrivilege	1704	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 1996	1056	rundll32.exe	25
PID 1056 wrote to memory of 1996	1056	rundll32.exe	25
PID 1056 wrote to memory of 1996	1056	rundll32.exe	25
PID 1056 wrote to memory of 1996	1056	rundll32.exe	25
PID 1056 wrote to memory of 1996	1056	rundll32.exe	25
PID 1056 wrote to memory of 1996	1056	rundll32.exe	25
PID 1056 wrote to memory of 1996	1056	rundll32.exe	25
PID 1996 wrote to memory of 1704	1996	rundll32.exe	30
PID 1996 wrote to memory of 1704	1996	rundll32.exe	30
PID 1996 wrote to memory of 1704	1996	rundll32.exe	30
PID 1996 wrote to memory of 1704	1996	rundll32.exe	30
PID 1996 wrote to memory of 1704	1996	rundll32.exe	30
PID 1996 wrote to memory of 1704	1996	rundll32.exe	30
PID 1996 wrote to memory of 1704	1996	rundll32.exe	30
PID 1996 wrote to memory of 1704	1996	rundll32.exe	30
PID 1996 wrote to memory of 1704	1996	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\sustenance.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\sustenance.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1996
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    PID:1704

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/1216-5-0x000007FEF6730000-0x000007FEF69AA000-memory.dmp

Filesize
2.5MB

Download
memory/1704-2-0x0000000000100000-0x0000000000101000-memory.dmp

Filesize
4KB

Download
memory/1704-1-0x00000000000D0000-0x00000000000FB000-memory.dmp

Filesize
172KB

Download
memory/1704-3-0x00000000000D0000-0x00000000000FB000-memory.dmp

Filesize
172KB

Download