zloader | da550540689b015b44a2e03f37c23ed8c8730ccf9cb611490dc76a39782dce2b

Analysis

max time kernel
148s
max time network
143s
platform
windows7_x64
resource
win7v200430
submitted
19-07-2020 17:30

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General

Target

zloader 2_1.1.20.0.vir.exe
Size

575KB
MD5

7d8bb43c8776981c2c75313cf67175f0
SHA1

d3895f0e4116c045c4e13ea478643e64b1ebf12d
SHA256

da550540689b015b44a2e03f37c23ed8c8730ccf9cb611490dc76a39782dce2b
SHA512

b74bf507bf7729ad0f231308bfcbdd36fe12dd8dcd687724d2e2e038422bcdd0e1204f59977b27988e2913329e99f7804243d9be860ae615e21154a85ffd91b5

Score

10^/10

persistence trojan botnet zloader

Malware Config

Signatures

Suspicious use of SetThreadContext 1 IoCs

Processes:

zloader 2_1.1.20.0.vir.exe

description pid process target process

PID 1500 set thread context of 1840 1500 zloader 2_1.1.20.0.vir.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1840 msiexec.exe
Token: SeSecurityPrivilege 1840 msiexec.exe

description	pid	process	target process
PID 1500 set thread context of 1840	1500	zloader 2_1.1.20.0.vir.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1840	msiexec.exe
Token: SeSecurityPrivilege	1840	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
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\Vufiixi = "C:\\Users\\Admin\\AppData\\Roaming\\Uhyfmy\\nofah.exe"	msiexec.exe
Key created	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe

Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

zloader 2_1.1.20.0.vir.exe

description	pid	process	target process
PID 1500 wrote to memory of 1840	1500	zloader 2_1.1.20.0.vir.exe	msiexec.exe
PID 1500 wrote to memory of 1840	1500	zloader 2_1.1.20.0.vir.exe	msiexec.exe
PID 1500 wrote to memory of 1840	1500	zloader 2_1.1.20.0.vir.exe	msiexec.exe
PID 1500 wrote to memory of 1840	1500	zloader 2_1.1.20.0.vir.exe	msiexec.exe
PID 1500 wrote to memory of 1840	1500	zloader 2_1.1.20.0.vir.exe	msiexec.exe
PID 1500 wrote to memory of 1840	1500	zloader 2_1.1.20.0.vir.exe	msiexec.exe
PID 1500 wrote to memory of 1840	1500	zloader 2_1.1.20.0.vir.exe	msiexec.exe
PID 1500 wrote to memory of 1840	1500	zloader 2_1.1.20.0.vir.exe	msiexec.exe
PID 1500 wrote to memory of 1840	1500	zloader 2_1.1.20.0.vir.exe	msiexec.exe

C:\Users\Admin\AppData\Local\Temp\zloader 2_1.1.20.0.vir.exe
"C:\Users\Admin\AppData\Local\Temp\zloader 2_1.1.20.0.vir.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1500

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
2⤵
- Suspicious use of AdjustPrivilegeToken
- Adds Run key to start application
PID:1840

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/1840-0-0x00000000000D0000-0x0000000000101000-memory.dmp

Filesize
196KB

Download
memory/1840-1-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1840-2-0x00000000000D0000-0x0000000000101000-memory.dmp

Filesize
196KB

Download
memory/1840-3-0x0000000000000000-mapping.dmp

Download