zloader | 29f4fa56df55b1b53b2a8a6b27d2816436a75153eaf0533cf7d788d7026d8366

General

Target

29f4fa56df55b1b53b2a8a6b27d2816436a75153eaf0533cf7d788d7026d8366.xlsm
Size

86KB
MD5

a758f5bfaeb275b5dfaf5be55a8b087b
SHA1

eff178dfef00ee753f4a540107632e43ec4a4ef9
SHA256

29f4fa56df55b1b53b2a8a6b27d2816436a75153eaf0533cf7d788d7026d8366
SHA512

7e96b281aa9433bb05073ff0ee9cb9d94384ef6cf9b801d11d5d420d647c79310f18485fab340afa8d0eb9bcdc64ec7cf885ee5636fc7edcfbbfe54ff208f364

Score

10^/10

spyware trojan botnet zloader

Malware Config

Signatures

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 3896 msiexec.exe
Token: SeSecurityPrivilege 3896 msiexec.exe
Enumerates connected drives 3 TTPs

Query Registry
T1012

Peripheral Device Discovery
T1120

System Information Discovery
T1082
Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 2712 set thread context of 3896 2712 rundll32.exe msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	3896	msiexec.exe
Token: SeSecurityPrivilege	3896	msiexec.exe

description	pid	process	target process
PID 2712 set thread context of 3896	2712	rundll32.exe	msiexec.exe

Blacklisted process makes network request 17 IoCs

Processes:

msiexec.exe

flow	pid	process
28	3896	msiexec.exe
29	3896	msiexec.exe
30	3896	msiexec.exe
31	3896	msiexec.exe
32	3896	msiexec.exe
33	3896	msiexec.exe
34	3896	msiexec.exe
35	3896	msiexec.exe
36	3896	msiexec.exe
37	3896	msiexec.exe
38	3896	msiexec.exe
39	3896	msiexec.exe
40	3896	msiexec.exe
41	3896	msiexec.exe
42	3896	msiexec.exe
43	3896	msiexec.exe
44	3896	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

msiexec.exe

pid process

3896 msiexec.exe
3896 msiexec.exe

pid	process
3896	msiexec.exe
3896	msiexec.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1008	EXCEL.EXE
1008	EXCEL.EXE
1008	EXCEL.EXE
1008	EXCEL.EXE
1008	EXCEL.EXE
1008	EXCEL.EXE
1008	EXCEL.EXE
1008	EXCEL.EXE
1008	EXCEL.EXE
1008	EXCEL.EXE
1008	EXCEL.EXE
1008	EXCEL.EXE

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exemsiexec.execmd.execmd.exenet.execmd.execmd.exe

description	pid	process	target process
PID 1008 wrote to memory of 2420	1008	EXCEL.EXE	rundll32.exe
PID 1008 wrote to memory of 2420	1008	EXCEL.EXE	rundll32.exe
PID 2420 wrote to memory of 2712	2420	rundll32.exe	rundll32.exe
PID 2420 wrote to memory of 2712	2420	rundll32.exe	rundll32.exe
PID 2420 wrote to memory of 2712	2420	rundll32.exe	rundll32.exe
PID 2712 wrote to memory of 3896	2712	rundll32.exe	msiexec.exe
PID 2712 wrote to memory of 3896	2712	rundll32.exe	msiexec.exe
PID 2712 wrote to memory of 3896	2712	rundll32.exe	msiexec.exe
PID 2712 wrote to memory of 3896	2712	rundll32.exe	msiexec.exe
PID 2712 wrote to memory of 3896	2712	rundll32.exe	msiexec.exe
PID 3896 wrote to memory of 864	3896	msiexec.exe	cmd.exe
PID 3896 wrote to memory of 864	3896	msiexec.exe	cmd.exe
PID 3896 wrote to memory of 864	3896	msiexec.exe	cmd.exe
PID 864 wrote to memory of 4004	864	cmd.exe	ipconfig.exe
PID 864 wrote to memory of 4004	864	cmd.exe	ipconfig.exe
PID 864 wrote to memory of 4004	864	cmd.exe	ipconfig.exe
PID 3896 wrote to memory of 3740	3896	msiexec.exe	cmd.exe
PID 3896 wrote to memory of 3740	3896	msiexec.exe	cmd.exe
PID 3896 wrote to memory of 3740	3896	msiexec.exe	cmd.exe
PID 3740 wrote to memory of 2888	3740	cmd.exe	net.exe
PID 3740 wrote to memory of 2888	3740	cmd.exe	net.exe
PID 3740 wrote to memory of 2888	3740	cmd.exe	net.exe
PID 2888 wrote to memory of 2196	2888	net.exe	net1.exe
PID 2888 wrote to memory of 2196	2888	net.exe	net1.exe
PID 2888 wrote to memory of 2196	2888	net.exe	net1.exe
PID 3896 wrote to memory of 3468	3896	msiexec.exe	cmd.exe
PID 3896 wrote to memory of 3468	3896	msiexec.exe	cmd.exe
PID 3896 wrote to memory of 3468	3896	msiexec.exe	cmd.exe
PID 3468 wrote to memory of 692	3468	cmd.exe	net.exe
PID 3468 wrote to memory of 692	3468	cmd.exe	net.exe
PID 3468 wrote to memory of 692	3468	cmd.exe	net.exe
PID 3896 wrote to memory of 3948	3896	msiexec.exe	cmd.exe
PID 3896 wrote to memory of 3948	3896	msiexec.exe	cmd.exe
PID 3896 wrote to memory of 3948	3896	msiexec.exe	cmd.exe
PID 3948 wrote to memory of 944	3948	cmd.exe	net.exe
PID 3948 wrote to memory of 944	3948	cmd.exe	net.exe
PID 3948 wrote to memory of 944	3948	cmd.exe	net.exe

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

2712 rundll32.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Discovers systems in the same network 1 TTPs 2 IoCs
discovery

Remote System Discovery
T1018

Processes:

net.exenet.exe

pid process

692 net.exe
944 net.exe

pid	process
2712	rundll32.exe

pid	process
692	net.exe
944	net.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1008 EXCEL.EXE
Runs net.exe

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2420	1008	rundll32.exe	EXCEL.EXE

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\29f4fa56df55b1b53b2a8a6b27d2816436a75153eaf0533cf7d788d7026d8366.xlsm"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
PID:1008

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" mHMUKpx.dll,DllRegisterServer
2⤵
- Suspicious use of WriteProcessMemory
- Process spawned unexpected child process
PID:2420

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" mHMUKpx.dll,DllRegisterServer
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- Loads dropped DLL
PID:2712

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
4⤵
- Suspicious use of AdjustPrivilegeToken
- Blacklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3896

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ipconfig /all
5⤵
- Suspicious use of WriteProcessMemory
PID:864

C:\Windows\SysWOW64\ipconfig.exe
ipconfig /all
6⤵
PID:4004

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c net config workstation
5⤵
- Suspicious use of WriteProcessMemory
PID:3740

C:\Windows\SysWOW64\net.exe
net config workstation
6⤵
- Suspicious use of WriteProcessMemory
PID:2888

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 config workstation
7⤵
PID:2196

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c net view /all
5⤵
- Suspicious use of WriteProcessMemory
PID:3468

C:\Windows\SysWOW64\net.exe
net view /all
6⤵
- Discovers systems in the same network
PID:692

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c net view /all /domain
5⤵
- Suspicious use of WriteProcessMemory
PID:3948

C:\Windows\SysWOW64\net.exe
net view /all /domain
6⤵
- Discovers systems in the same network
PID:944

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

3

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

3

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Documents\mHMUKpx.dll

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\Users\Admin\Documents\mHMUKpx.dll

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memory/3896-2-0x0000000000760000-0x0000000000797000-memory.dmp

Filesize
220KB

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Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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