zloader | 9e2fa4b7f6deb04ea27330c49288b59646737eea5c37d21acc2d4433054b9e4e

Analysis

max time kernel
110s
max time network
111s
platform
windows10_x64
resource
win10v20201028
submitted
09-11-2020 20:55

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General

Target

uOUcRwG.bin.dll
Size

536KB
MD5

5f876d0f7e22485ed0d5b5e55d464a29
SHA1

1a6f7f166ba0cd568c3fa8bc8984940807fc8c24
SHA256

9e2fa4b7f6deb04ea27330c49288b59646737eea5c37d21acc2d4433054b9e4e
SHA512

e4356943be247753259ad9808e63bfa96b10b72c3d9f141769db3cb269f98b1a4a5b61038fd99f655bf1411ed2b06af5e5ee8a3a0d1574a3cfe57a6c4397ee76

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 4752 set thread context of 3224 4752 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 3224 msiexec.exe
Token: SeSecurityPrivilege 3224 msiexec.exe

description	pid	process	target process
PID 4752 set thread context of 3224	4752	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	3224	msiexec.exe
Token: SeSecurityPrivilege	3224	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4696 wrote to memory of 4752	4696	rundll32.exe	rundll32.exe
PID 4696 wrote to memory of 4752	4696	rundll32.exe	rundll32.exe
PID 4696 wrote to memory of 4752	4696	rundll32.exe	rundll32.exe
PID 4752 wrote to memory of 3224	4752	rundll32.exe	msiexec.exe
PID 4752 wrote to memory of 3224	4752	rundll32.exe	msiexec.exe
PID 4752 wrote to memory of 3224	4752	rundll32.exe	msiexec.exe
PID 4752 wrote to memory of 3224	4752	rundll32.exe	msiexec.exe
PID 4752 wrote to memory of 3224	4752	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\uOUcRwG.bin.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4696

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\uOUcRwG.bin.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4752

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:3224

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/3224-1-0x0000000002920000-0x000000000294B000-memory.dmp

Filesize
172KB

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memory/3224-2-0x0000000000000000-mapping.dmp

Download
memory/4752-0-0x0000000000000000-mapping.dmp

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