c81ea002e9f2ba699dffb21967cae71cb69f752e68b5685e427593312115d2d5

Analysis

max time kernel
153s
max time network
138s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
24-11-2022 19:24

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General

Target

sita.exe
Size

331KB
MD5

a01b9095e1c5b24279bf4b8587f0f156
SHA1

1acb07c459f20bbfb7aaa8289b63bba5eda7bb2c
SHA256

34b2479724a8efe6d04236305e15342378dca7ff5677a48b2943404b36e229fe
SHA512

f52c9f3263ac04ba803c0d564c6285adc80b4e84c95ccf88ca4812994fa82a60d65a7be6671ac762c0ec693c10b051e0733aa63689dad7e356ff0fda713f0b50
SSDEEP

6144:qlBswxp0yoxVGuvM/OHgyGFVzC+j5wGuGGbGmGOG2yG+GXGkGuGGpGGIGGHGGjGM:qlZpYMuvMKvGFVx2Wvo

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

sita.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Roaming\\RealtekHD\\GfFjdFQKvxht.exe\",explorer.exe"	sita.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

sita.exe

description pid process target process

PID 2036 set thread context of 1000 2036 sita.exe vbc.exe
Drops file in Windows directory 1 IoCs

Processes:

vbc.exe

description ioc process

File created C:\Windows\Microsoft.NET\Framework\v2.0.50727\.Identifier vbc.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

sita.exe

pid process

2036 sita.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

sita.exe

description pid process

Token: SeDebugPrivilege 2036 sita.exe

description	pid	process	target process
PID 2036 set thread context of 1000	2036	sita.exe	vbc.exe

description	ioc	process
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\.Identifier	vbc.exe

pid	process
2036	sita.exe

description	pid	process
Token: SeDebugPrivilege	2036	sita.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

sita.exe

description	pid	process	target process
PID 2036 wrote to memory of 1000	2036	sita.exe	vbc.exe
PID 2036 wrote to memory of 1000	2036	sita.exe	vbc.exe
PID 2036 wrote to memory of 1000	2036	sita.exe	vbc.exe
PID 2036 wrote to memory of 1000	2036	sita.exe	vbc.exe
PID 2036 wrote to memory of 1000	2036	sita.exe	vbc.exe
PID 2036 wrote to memory of 1000	2036	sita.exe	vbc.exe
PID 2036 wrote to memory of 1000	2036	sita.exe	vbc.exe
PID 2036 wrote to memory of 1000	2036	sita.exe	vbc.exe
PID 2036 wrote to memory of 1000	2036	sita.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\sita.exe
"C:\Users\Admin\AppData\Local\Temp\sita.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
2⤵
- Drops file in Windows directory
PID:1000

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

T1064

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1000-65-0x0000000000401F8F-mapping.dmp

Download
memory/1000-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1000-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1000-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1000-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1000-64-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1000-68-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1000-69-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1000-70-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2036-55-0x00000000747D0000-0x0000000074D7B000-memory.dmp

Filesize
5.7MB

Download
memory/2036-56-0x00000000747D0000-0x0000000074D7B000-memory.dmp

Filesize
5.7MB

Download
memory/2036-57-0x00000000006C5000-0x00000000006D6000-memory.dmp

Filesize
68KB

Download
memory/2036-54-0x0000000076381000-0x0000000076383000-memory.dmp

Filesize
8KB

Download