zloader | be73a8b0548f93351984b116d42f6559311fdb6e757dcd174958d8b0028ac1fb

General

Target

be73a8b0548f93351984b116d42f6559311fdb6e757dcd174958d8b0028ac1fb.vbs
Size

1.0MB
MD5

7e8c741445cde9246b96c96a9cb89cd1
SHA1

93409daece5165c0916e4e45d4c62292f57b34db
SHA256

be73a8b0548f93351984b116d42f6559311fdb6e757dcd174958d8b0028ac1fb
SHA512

6d27fefa6c01fc07cd5d7ea2d69f9a061ac6438327dec2b1474316c0601ed3f7baeeb37b1fcfac0128274bec9d50f27e5006364006f419927de499cd159a411a

Score

10^/10

zloader main 29.03.2020 botnet persistence trojan

Malware Config

Extracted

Family

zloader

Botnet

main

Campaign

29.03.2020

C2

https://postgringos.com/sound.php

https://tetraslims.com/sound.php

https://greenrumba.com/sound.php

https://starterdatas.com/sound.php

https://nexycombats.com/sound.php

https://peermems.com/sound.php

https://fotonums.com/sound.php

https://hibsurf.com/sound.php

https://buhismus.com/sound.php

https://spensores.com/sound.php

Attributes

build_id
30

rc4.plain

Signatures

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:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 620 528 rundll32.exe
Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader
Loads dropped DLL 4 IoCs

Processes:

rundll32.exe

pid process

1532 rundll32.exe
1532 rundll32.exe
1532 rundll32.exe
1532 rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	620	528	rundll32.exe

pid	process
1532	rundll32.exe
1532	rundll32.exe
1532	rundll32.exe
1532	rundll32.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-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ydyn = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Lyku\\akeskeap.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1532 set thread context of 1860 1532 rundll32.exe msiexec.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1860 msiexec.exe
Token: SeSecurityPrivilege 1860 msiexec.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

WScript.exe

pid process

1632 WScript.exe

description	pid	process	target process
PID 1532 set thread context of 1860	1532	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1860	msiexec.exe
Token: SeSecurityPrivilege	1860	msiexec.exe

pid	process
1632	WScript.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 620 wrote to memory of 1532	620	rundll32.exe	rundll32.exe
PID 620 wrote to memory of 1532	620	rundll32.exe	rundll32.exe
PID 620 wrote to memory of 1532	620	rundll32.exe	rundll32.exe
PID 620 wrote to memory of 1532	620	rundll32.exe	rundll32.exe
PID 620 wrote to memory of 1532	620	rundll32.exe	rundll32.exe
PID 620 wrote to memory of 1532	620	rundll32.exe	rundll32.exe
PID 620 wrote to memory of 1532	620	rundll32.exe	rundll32.exe
PID 1532 wrote to memory of 1860	1532	rundll32.exe	msiexec.exe
PID 1532 wrote to memory of 1860	1532	rundll32.exe	msiexec.exe
PID 1532 wrote to memory of 1860	1532	rundll32.exe	msiexec.exe
PID 1532 wrote to memory of 1860	1532	rundll32.exe	msiexec.exe
PID 1532 wrote to memory of 1860	1532	rundll32.exe	msiexec.exe
PID 1532 wrote to memory of 1860	1532	rundll32.exe	msiexec.exe
PID 1532 wrote to memory of 1860	1532	rundll32.exe	msiexec.exe
PID 1532 wrote to memory of 1860	1532	rundll32.exe	msiexec.exe
PID 1532 wrote to memory of 1860	1532	rundll32.exe	msiexec.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\be73a8b0548f93351984b116d42f6559311fdb6e757dcd174958d8b0028ac1fb.vbs"
1⤵
- Suspicious use of FindShellTrayWindow
PID:1632

C:\Windows\system32\rundll32.exe
rundll32 C:\Users\Admin\AppData\Local\Temp\VrSiekwRtfHPpfg.exe,DllRegisterServer
1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:620

C:\Windows\SysWOW64\rundll32.exe
rundll32 C:\Users\Admin\AppData\Local\Temp\VrSiekwRtfHPpfg.exe,DllRegisterServer
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1532

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:1860

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\VrSiekwRtfHPpfg.exe
MD5
24f98dee17042e0bd3f723f7bbfa839f

SHA1
10123cbacb225b078c8e0a847da9e020bc0119e1

SHA256
8542bf1c3c7532f11fc39b4b6a20a08ef5bd0c8d42e3262028d4ffdbc5aa88f8

SHA512
0db0794e2547015695e40db1d419c944f1d955aa3f3ae3b673900f995b9a45126097f4a6a6029dbe7bfb87ed694bc024f720b05172332b1f41a8600a8bfd3b6f

Download Submit
\Users\Admin\AppData\Local\Temp\VrSiekwRtfHPpfg.exe
MD5
24f98dee17042e0bd3f723f7bbfa839f

SHA1
10123cbacb225b078c8e0a847da9e020bc0119e1

SHA256
8542bf1c3c7532f11fc39b4b6a20a08ef5bd0c8d42e3262028d4ffdbc5aa88f8

SHA512
0db0794e2547015695e40db1d419c944f1d955aa3f3ae3b673900f995b9a45126097f4a6a6029dbe7bfb87ed694bc024f720b05172332b1f41a8600a8bfd3b6f

Download Submit
\Users\Admin\AppData\Local\Temp\VrSiekwRtfHPpfg.exe
MD5
24f98dee17042e0bd3f723f7bbfa839f

SHA1
10123cbacb225b078c8e0a847da9e020bc0119e1

SHA256
8542bf1c3c7532f11fc39b4b6a20a08ef5bd0c8d42e3262028d4ffdbc5aa88f8

SHA512
0db0794e2547015695e40db1d419c944f1d955aa3f3ae3b673900f995b9a45126097f4a6a6029dbe7bfb87ed694bc024f720b05172332b1f41a8600a8bfd3b6f

Download Submit
\Users\Admin\AppData\Local\Temp\VrSiekwRtfHPpfg.exe
MD5
24f98dee17042e0bd3f723f7bbfa839f

SHA1
10123cbacb225b078c8e0a847da9e020bc0119e1

SHA256
8542bf1c3c7532f11fc39b4b6a20a08ef5bd0c8d42e3262028d4ffdbc5aa88f8

SHA512
0db0794e2547015695e40db1d419c944f1d955aa3f3ae3b673900f995b9a45126097f4a6a6029dbe7bfb87ed694bc024f720b05172332b1f41a8600a8bfd3b6f

Download Submit
\Users\Admin\AppData\Local\Temp\VrSiekwRtfHPpfg.exe
MD5
24f98dee17042e0bd3f723f7bbfa839f

SHA1
10123cbacb225b078c8e0a847da9e020bc0119e1

SHA256
8542bf1c3c7532f11fc39b4b6a20a08ef5bd0c8d42e3262028d4ffdbc5aa88f8

SHA512
0db0794e2547015695e40db1d419c944f1d955aa3f3ae3b673900f995b9a45126097f4a6a6029dbe7bfb87ed694bc024f720b05172332b1f41a8600a8bfd3b6f

Download Submit
memory/1532-57-0x00000000763F1000-0x00000000763F3000-memory.dmp

Filesize
8KB

Download
memory/1532-62-0x0000000000680000-0x00000000006CD000-memory.dmp

Filesize
308KB

Download
memory/1532-63-0x0000000010000000-0x00000000100D6000-memory.dmp

Filesize
856KB

Download
memory/1632-54-0x000007FEFC031000-0x000007FEFC033000-memory.dmp

Filesize
8KB

Download
memory/1632-55-0x0000000001ED0000-0x0000000001ED1000-memory.dmp

Filesize
4KB

Download
memory/1860-65-0x0000000000090000-0x00000000000C1000-memory.dmp

Filesize
196KB

Download
memory/1860-64-0x0000000000090000-0x00000000000C0000-memory.dmp

Filesize
192KB

Download
memory/1860-66-0x0000000000090000-0x00000000000C1000-memory.dmp

Filesize
196KB

Download
memory/1860-68-0x0000000000090000-0x00000000000C0000-memory.dmp

Filesize
192KB

Download

Analysis

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