zloader | f1bdd2bcbaf40bb99224fa293edc1581fd124da63c035657918877901d79bed8

Analysis

max time kernel
149s
max time network
152s
platform
windows10_x64
resource
win10-en-20210920
submitted
04-10-2021 22:36

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General

Target

zloader_1_0_2_0.dll
Size

338KB
MD5

62d565051f3cae6d6bc8971420bec819
SHA1

b6c0f532108a3b392e9d8c1b0cfbf85cf8aa8fb3
SHA256

f1bdd2bcbaf40bb99224fa293edc1581fd124da63c035657918877901d79bed8
SHA512

c1401aeb4788ff39a501529ab3cd55223570404657be98c137326d76f7a23e5bf6dbb1faefd609519819c509ffcfd4d47f06c09afacad460485fbda9eb87d9ff

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

Processes:

msiexec.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Biehibb = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Hegi\\ocyh.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 2504 set thread context of 2668 2504 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 2668 msiexec.exe
Token: SeSecurityPrivilege 2668 msiexec.exe

description	pid	process	target process
PID 2504 set thread context of 2668	2504	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	2668	msiexec.exe
Token: SeSecurityPrivilege	2668	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2416 wrote to memory of 2504	2416	rundll32.exe	rundll32.exe
PID 2416 wrote to memory of 2504	2416	rundll32.exe	rundll32.exe
PID 2416 wrote to memory of 2504	2416	rundll32.exe	rundll32.exe
PID 2504 wrote to memory of 2668	2504	rundll32.exe	msiexec.exe
PID 2504 wrote to memory of 2668	2504	rundll32.exe	msiexec.exe
PID 2504 wrote to memory of 2668	2504	rundll32.exe	msiexec.exe
PID 2504 wrote to memory of 2668	2504	rundll32.exe	msiexec.exe
PID 2504 wrote to memory of 2668	2504	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zloader_1_0_2_0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2416

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zloader_1_0_2_0.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2504

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:2668

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2504-115-0x0000000000000000-mapping.dmp

Download
memory/2504-116-0x00000000735A0000-0x00000000735C9000-memory.dmp

Filesize
164KB

Download
memory/2504-117-0x00000000735A0000-0x0000000073EFE000-memory.dmp

Filesize
9.4MB

Download
memory/2504-118-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/2668-119-0x0000000000000000-mapping.dmp

Download
memory/2668-122-0x0000000000A30000-0x0000000000A59000-memory.dmp

Filesize
164KB

Download