zloader | f9604372c577e72a1560e02bede724a35e0f011406fe19f409083a59867850ac

Analysis

max time kernel
149s
max time network
149s
platform
windows10_x64
resource
win10v20201028
submitted
09-11-2020 20:57

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General

Target

gbs.dll
Size

490KB
MD5

7e6b567873d7922bb8e168e56fdc8f17
SHA1

e5204f9a8a106b8e1c931c32226d1904dd0b4fda
SHA256

f9604372c577e72a1560e02bede724a35e0f011406fe19f409083a59867850ac
SHA512

635fa8c1e723b6fa0adb0043e9d0949990801e6f839ba740fa074db534a5c04cf484eeacf4dc4caa7df01232dcece7cf46e780332e91b2bf126f37f3c0cda3ed

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-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\Nozyvoe = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Tukeel\\afez.dll"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1268 set thread context of 2688 1268 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 2688 msiexec.exe
Token: SeSecurityPrivilege 2688 msiexec.exe

description	pid	process	target process
PID 1268 set thread context of 2688	1268	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	2688	msiexec.exe
Token: SeSecurityPrivilege	2688	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1160 wrote to memory of 1268	1160	rundll32.exe	rundll32.exe
PID 1160 wrote to memory of 1268	1160	rundll32.exe	rundll32.exe
PID 1160 wrote to memory of 1268	1160	rundll32.exe	rundll32.exe
PID 1268 wrote to memory of 2688	1268	rundll32.exe	msiexec.exe
PID 1268 wrote to memory of 2688	1268	rundll32.exe	msiexec.exe
PID 1268 wrote to memory of 2688	1268	rundll32.exe	msiexec.exe
PID 1268 wrote to memory of 2688	1268	rundll32.exe	msiexec.exe
PID 1268 wrote to memory of 2688	1268	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\gbs.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1160

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\gbs.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1268

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:2688

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/1268-0-0x0000000000000000-mapping.dmp

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memory/2688-1-0x00000000027D0000-0x00000000027FB000-memory.dmp

Filesize
172KB

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memory/2688-2-0x0000000000000000-mapping.dmp

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