zloader | cfc1944acff90935f9c7e42939d6384dfeaac9c9e481314b97b2033238d9c83f

Analysis

max time kernel
147s
max time network
150s
platform
windows10_x64
resource
win10v20201028
submitted
02-11-2020 05:22

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General

Target

1255.dll
Size

314KB
MD5

d31b05ee7a806f3ffa827a4586478e92
SHA1

ec614f83758247b25d5699013a8dd7bf7f597bf2
SHA256

10fef4095658c0e9ace83a11bf287add9a36d30fb4b037fc89f3e32388e6f652
SHA512

559a69b92ccda30a79f33e0b967c269c5ce8d377a648514bb45af86c909c5c784a461da8c1e940a06f5cc2d3e7020b97f98c71da6cb886a2d308102814a8f177

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
Blacklisted process makes network request 6 IoCs

Processes:

msiexec.exe

flow pid process

19 3008 msiexec.exe
20 3008 msiexec.exe
21 3008 msiexec.exe
22 3008 msiexec.exe
23 3008 msiexec.exe
24 3008 msiexec.exe

flow	pid	process
19	3008	msiexec.exe
20	3008	msiexec.exe
21	3008	msiexec.exe
22	3008	msiexec.exe
23	3008	msiexec.exe
24	3008	msiexec.exe

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-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ocixviox = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Pewoko\\noegy.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 492 set thread context of 3008 492 rundll32.exe msiexec.exe
Drops file in Windows directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\ rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 3008 msiexec.exe
Token: SeSecurityPrivilege 3008 msiexec.exe

description	pid	process	target process
PID 492 set thread context of 3008	492	rundll32.exe	msiexec.exe

description	ioc	process
File opened for modification	C:\Windows\	rundll32.exe

description	pid	process
Token: SeSecurityPrivilege	3008	msiexec.exe
Token: SeSecurityPrivilege	3008	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 580 wrote to memory of 492	580	rundll32.exe	rundll32.exe
PID 580 wrote to memory of 492	580	rundll32.exe	rundll32.exe
PID 580 wrote to memory of 492	580	rundll32.exe	rundll32.exe
PID 492 wrote to memory of 3008	492	rundll32.exe	msiexec.exe
PID 492 wrote to memory of 3008	492	rundll32.exe	msiexec.exe
PID 492 wrote to memory of 3008	492	rundll32.exe	msiexec.exe
PID 492 wrote to memory of 3008	492	rundll32.exe	msiexec.exe
PID 492 wrote to memory of 3008	492	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1255.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:580

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1255.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:492

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Blacklisted process makes network request
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:3008

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/492-0-0x0000000000000000-mapping.dmp

Download
memory/3008-1-0x0000000002E00000-0x0000000002E33000-memory.dmp

Filesize
204KB

Download
memory/3008-2-0x0000000000000000-mapping.dmp

Download