zloader | 0c8569e4304f46352b041dcb692f85c9e195130db2013d4f2216130603478035

Analysis

max time kernel
147s
max time network
125s
platform
windows10_x64
resource
win10v200430
submitted
13-07-2020 09:51

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General

Target

literary.dll
Size

282KB
MD5

2ad76998fa6e595b62a77df8a5fe7e1b
SHA1

8f179f26412a2df01f273796020133d182ee8bba
SHA256

0c8569e4304f46352b041dcb692f85c9e195130db2013d4f2216130603478035
SHA512

99bd1c1070c8a01dc26541ee3da5d218cae362be3d4410af316707339e62df2092fd57ec0eb3b8ec5599b3e54a6eecd28740317b87c90f72d0502444a442983a

Score

10^/10

trojan botnet zloader persistence

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-1-5-21-1231583446-2617009595-2137880041-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1231583446-2617009595-2137880041-1000\Software\Microsoft\Windows\CurrentVersion\Run\Avoc = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Fabeda\\teudaw.dll"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 2088 set thread context of 2200 2088 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 2200 msiexec.exe
Token: SeSecurityPrivilege 2200 msiexec.exe

description	pid	process	target process
PID 2088 set thread context of 2200	2088	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	2200	msiexec.exe
Token: SeSecurityPrivilege	2200	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3768 wrote to memory of 2088	3768	rundll32.exe	rundll32.exe
PID 3768 wrote to memory of 2088	3768	rundll32.exe	rundll32.exe
PID 3768 wrote to memory of 2088	3768	rundll32.exe	rundll32.exe
PID 2088 wrote to memory of 2200	2088	rundll32.exe	msiexec.exe
PID 2088 wrote to memory of 2200	2088	rundll32.exe	msiexec.exe
PID 2088 wrote to memory of 2200	2088	rundll32.exe	msiexec.exe
PID 2088 wrote to memory of 2200	2088	rundll32.exe	msiexec.exe
PID 2088 wrote to memory of 2200	2088	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\literary.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3768

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\literary.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2088

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:2200

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/2088-0-0x0000000000000000-mapping.dmp

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memory/2200-1-0x0000000002A90000-0x0000000002ABC000-memory.dmp

Filesize
176KB

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memory/2200-2-0x0000000000000000-mapping.dmp

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