zloader | 0d533321292f6854d7f9705a738d58ee5941c93b52674681083ec5c21a987ab1

Analysis

max time kernel
595s
max time network
597s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
27-10-2022 06:35

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General

Target

0d533321292f6854d7f9705a738d58ee5941c93b52674681083ec5c21a987ab1.dll
Size

422KB
MD5

f55920966b4970588ce643af0fcc03a7
SHA1

97c44c58f24358442cb1811a7694e5b395e82d61
SHA256

0d533321292f6854d7f9705a738d58ee5941c93b52674681083ec5c21a987ab1
SHA512

b5e6f91e65eacd6c1ad5f563f0d9184fd21fb88848008c7ea568d7c40c63fcbf217eeee2830a521313a3152e538821a469630fe951e760405972afae8516023e
SSDEEP

12288:yClc4hq+Ytl63+YzGKBTpJHtvgqYe7S9S:Tlc4kBl6OabpFtGgS0

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

Blocklisted process makes network request 10 IoCs

flow	pid	Process
5	680	msiexec.exe
6	680	msiexec.exe
7	680	msiexec.exe
8	680	msiexec.exe
9	680	msiexec.exe
13	680	msiexec.exe
14	680	msiexec.exe
15	680	msiexec.exe
16	680	msiexec.exe
17	680	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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Figoahha = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Obcud\\fycuba.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1156 set thread context of 680	1156	rundll32.exe	28

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSecurityPrivilege	680	msiexec.exe
Token: SeSecurityPrivilege	680	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 1156	1604	rundll32.exe	27
PID 1604 wrote to memory of 1156	1604	rundll32.exe	27
PID 1604 wrote to memory of 1156	1604	rundll32.exe	27
PID 1604 wrote to memory of 1156	1604	rundll32.exe	27
PID 1604 wrote to memory of 1156	1604	rundll32.exe	27
PID 1604 wrote to memory of 1156	1604	rundll32.exe	27
PID 1604 wrote to memory of 1156	1604	rundll32.exe	27
PID 1156 wrote to memory of 680	1156	rundll32.exe	28
PID 1156 wrote to memory of 680	1156	rundll32.exe	28
PID 1156 wrote to memory of 680	1156	rundll32.exe	28
PID 1156 wrote to memory of 680	1156	rundll32.exe	28
PID 1156 wrote to memory of 680	1156	rundll32.exe	28
PID 1156 wrote to memory of 680	1156	rundll32.exe	28
PID 1156 wrote to memory of 680	1156	rundll32.exe	28
PID 1156 wrote to memory of 680	1156	rundll32.exe	28
PID 1156 wrote to memory of 680	1156	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0d533321292f6854d7f9705a738d58ee5941c93b52674681083ec5c21a987ab1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0d533321292f6854d7f9705a738d58ee5941c93b52674681083ec5c21a987ab1.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1156
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Blocklisted process makes network request
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    PID:680

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/680-62-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/680-69-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/680-68-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/680-64-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/1156-58-0x00000000020A0000-0x00000000020CC000-memory.dmp

Filesize
176KB

Download
memory/1156-61-0x00000000020A0000-0x0000000002A10000-memory.dmp

Filesize
9.4MB

Download
memory/1156-60-0x00000000020A0000-0x0000000002A10000-memory.dmp

Filesize
9.4MB

Download
memory/1156-59-0x00000000020A0000-0x0000000002A10000-memory.dmp

Filesize
9.4MB

Download
memory/1156-67-0x00000000020A0000-0x0000000002A10000-memory.dmp

Filesize
9.4MB

Download
memory/1156-56-0x00000000020A0000-0x0000000002A10000-memory.dmp

Filesize
9.4MB

Download
memory/1156-55-0x0000000076461000-0x0000000076463000-memory.dmp

Filesize
8KB

Download