zloader | f1bdd2bcbaf40bb99224fa293edc1581fd124da63c035657918877901d79bed8

Analysis

max time kernel
593s
max time network
594s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
27-10-2022 06:35

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General

Target

f1bdd2bcbaf40bb99224fa293edc1581fd124da63c035657918877901d79bed8.dll
Size

338KB
MD5

62d565051f3cae6d6bc8971420bec819
SHA1

b6c0f532108a3b392e9d8c1b0cfbf85cf8aa8fb3
SHA256

f1bdd2bcbaf40bb99224fa293edc1581fd124da63c035657918877901d79bed8
SHA512

c1401aeb4788ff39a501529ab3cd55223570404657be98c137326d76f7a23e5bf6dbb1faefd609519819c509ffcfd4d47f06c09afacad460485fbda9eb87d9ff
SSDEEP

6144:d8ARSuigJ6mbVNjIECSQX3U0PflxxB7HDZnU7d:CARSacgjIV5Hl5jZMd

Score

10^/10

zloader botnet persistence trojan

Malware Config

Extracted

Family

zloader

Attributes

build_id
49

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
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ubdeb = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Yhug\\edigobg.dll,DllRegisterServer"	msiexec.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1620 set thread context of 1748	1620	rundll32.exe	28

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1748	msiexec.exe
Token: SeSecurityPrivilege	1748	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 1620	1208	rundll32.exe	27
PID 1208 wrote to memory of 1620	1208	rundll32.exe	27
PID 1208 wrote to memory of 1620	1208	rundll32.exe	27
PID 1208 wrote to memory of 1620	1208	rundll32.exe	27
PID 1208 wrote to memory of 1620	1208	rundll32.exe	27
PID 1208 wrote to memory of 1620	1208	rundll32.exe	27
PID 1208 wrote to memory of 1620	1208	rundll32.exe	27
PID 1620 wrote to memory of 1748	1620	rundll32.exe	28
PID 1620 wrote to memory of 1748	1620	rundll32.exe	28
PID 1620 wrote to memory of 1748	1620	rundll32.exe	28
PID 1620 wrote to memory of 1748	1620	rundll32.exe	28
PID 1620 wrote to memory of 1748	1620	rundll32.exe	28
PID 1620 wrote to memory of 1748	1620	rundll32.exe	28
PID 1620 wrote to memory of 1748	1620	rundll32.exe	28
PID 1620 wrote to memory of 1748	1620	rundll32.exe	28
PID 1620 wrote to memory of 1748	1620	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f1bdd2bcbaf40bb99224fa293edc1581fd124da63c035657918877901d79bed8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f1bdd2bcbaf40bb99224fa293edc1581fd124da63c035657918877901d79bed8.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1620
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    PID:1748

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/1620-55-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/1620-56-0x0000000073570000-0x0000000073599000-memory.dmp

Filesize
164KB

Download
memory/1620-57-0x0000000073570000-0x0000000073ECE000-memory.dmp

Filesize
9.4MB

Download
memory/1620-58-0x0000000073570000-0x0000000073ECE000-memory.dmp

Filesize
9.4MB

Download
memory/1620-59-0x0000000073570000-0x0000000073ECE000-memory.dmp

Filesize
9.4MB

Download
memory/1620-65-0x0000000073570000-0x0000000073ECE000-memory.dmp

Filesize
9.4MB

Download
memory/1748-60-0x0000000000090000-0x00000000000B9000-memory.dmp

Filesize
164KB

Download
memory/1748-62-0x0000000000090000-0x00000000000B9000-memory.dmp

Filesize
164KB

Download
memory/1748-66-0x0000000000090000-0x00000000000B9000-memory.dmp

Filesize
164KB

Download
memory/1748-67-0x0000000000090000-0x00000000000B9000-memory.dmp

Filesize
164KB

Download