zloader | e7a8396f875706bb367572480a2fe01be5a70163659fa9478e72779d553bae99

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2023 13:13

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General

Target

4204cc08265199def9a90a8401139adf.dll
Size

316KB
MD5

4204cc08265199def9a90a8401139adf
SHA1

ba1a47f6131106145030c09620388d4f9e188de8
SHA256

e7a8396f875706bb367572480a2fe01be5a70163659fa9478e72779d553bae99
SHA512

4f354b4b021ba9ea364b61c55df59bfdef4bdf7e1072b29572478eab3f7ad0fc3ab6d24f4ea498da2fe6db9d362ce3632057a328caba66eded55f828d0297dcc
SSDEEP

6144:VO7Ec2ccPvATdPsM2JSzwMxZS6VWxtoloBj5rbx:Q7vLGoZPs6NxZnVJ6Bj5rbx

Score

10^/10

zloader botnet persistence trojan

Malware Config

Extracted

Family

zloader

Attributes

build_id
808400176

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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Udfa = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Beoh\\coyh.dll,DllRegisterServer"	msiexec.exe

Blocklisted process makes network request 5 IoCs

flow	pid	Process
116	628	msiexec.exe
136	628	msiexec.exe
148	628	msiexec.exe
155	628	msiexec.exe
161	628	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4784 set thread context of 628	4784	rundll32.exe	103

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2956	4784	WerFault.exe	87

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSecurityPrivilege	628	msiexec.exe
Token: SeSecurityPrivilege	628	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4944 wrote to memory of 4784	4944	rundll32.exe	87
PID 4944 wrote to memory of 4784	4944	rundll32.exe	87
PID 4944 wrote to memory of 4784	4944	rundll32.exe	87
PID 4784 wrote to memory of 628	4784	rundll32.exe	103
PID 4784 wrote to memory of 628	4784	rundll32.exe	103
PID 4784 wrote to memory of 628	4784	rundll32.exe	103
PID 4784 wrote to memory of 628	4784	rundll32.exe	103
PID 4784 wrote to memory of 628	4784	rundll32.exe	103

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4204cc08265199def9a90a8401139adf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4944
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4204cc08265199def9a90a8401139adf.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4784
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Adds Run key to start application
    - Blocklisted process makes network request
    - Suspicious use of AdjustPrivilegeToken
    PID:628
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4784 -s 664
    3⤵
    - Program crash
    PID:2956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4784 -ip 4784
1⤵
PID:3720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/628-11-0x0000000000130000-0x0000000000156000-memory.dmp

Filesize
152KB

Download
memory/628-14-0x0000000000130000-0x0000000000156000-memory.dmp

Filesize
152KB

Download
memory/628-13-0x0000000000130000-0x0000000000156000-memory.dmp

Filesize
152KB

Download
memory/4784-6-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4784-4-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4784-5-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4784-1-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4784-7-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4784-8-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4784-9-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4784-10-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4784-3-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4784-2-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4784-0-0x0000000002530000-0x0000000002552000-memory.dmp

Filesize
136KB

Download
memory/4784-15-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads