zloader | 56f9b54e1e16887d66b8b9b7ea71d610951c18662a132cf7c9900d67b9745e81

Analysis

max time kernel
75s
max time network
147s
platform
windows10_x64
resource
win10
submitted
07-07-2020 21:49

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General

Target

swordfish.dll
Size

291KB
MD5

837a0d0ad7d8d3a00cfb459da61009bc
SHA1

80da690f6de605e01df655445ab9717e2d1242f1
SHA256

56f9b54e1e16887d66b8b9b7ea71d610951c18662a132cf7c9900d67b9745e81
SHA512

a064fc0bbc98fdea3156febaf48f8989f343fb82533a66dc470605690d2fc2c72a944d7961a6f984498990727efbaaea3cd253d0388460414c98e989d7ce4969

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-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Windows\CurrentVersion\Run\Tual = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Kiaso\\xuynl.dll"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 3496 set thread context of 2800 3496 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 2800 msiexec.exe
Token: SeSecurityPrivilege 2800 msiexec.exe

description	pid	process	target process
PID 3496 set thread context of 2800	3496	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	2800	msiexec.exe
Token: SeSecurityPrivilege	2800	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 792 wrote to memory of 3496	792	rundll32.exe	rundll32.exe
PID 792 wrote to memory of 3496	792	rundll32.exe	rundll32.exe
PID 792 wrote to memory of 3496	792	rundll32.exe	rundll32.exe
PID 3496 wrote to memory of 2800	3496	rundll32.exe	msiexec.exe
PID 3496 wrote to memory of 2800	3496	rundll32.exe	msiexec.exe
PID 3496 wrote to memory of 2800	3496	rundll32.exe	msiexec.exe
PID 3496 wrote to memory of 2800	3496	rundll32.exe	msiexec.exe
PID 3496 wrote to memory of 2800	3496	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\swordfish.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:792

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\swordfish.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3496

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:2800

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/2800-1-0x0000000002C90000-0x0000000002CBC000-memory.dmp

Filesize
176KB

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memory/2800-2-0x0000000000000000-mapping.dmp

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memory/3496-0-0x0000000000000000-mapping.dmp

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