privateloader | f1df90c4738c0a37e6a474f2502b113239ee0951177a5363a7785dcb7bf89f5e

Analysis

max time kernel
154s
max time network
167s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
08-07-2024 03:41

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General

Target

setup.exe
Size

792.0MB
MD5

d99235956d2438017dce77cbf6cb1176
SHA1

4121d8636b556b9da48081b2d818f3dcde3ac9a4
SHA256

74134cd0030b7681d9f753f8ecf68bf14937ba0261522bf05e5bef564cd8b8b0
SHA512

f090c7d82daf9f3ae9582e1d40f22272cb7e8911eae20c312704c7b814005816c8a78960b0ec21d376443db3c49c9d012052aa1f5692167b514fcf3211841351
SSDEEP

98304:rOuBF3zj5prjsd8VNCofaoUhXo8uG9pmSgQ7gCbHRd3bcEo:qunj5prvX8uGxgQZLcEo

Score

10^/10

privateloader evasion loader

Malware Config

Signatures

Modifies firewall policy service 3 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

Processes:

setup.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\FirewallRules\C:\ = "1"	setup.exe

PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
loader privateloader

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow	ioc
17	api.myip.com
18	api.myip.com
19	ipinfo.io
21	ipinfo.io

Drops file in System32 directory 4 IoCs

Processes:

setup.exe

description	ioc	Process
File opened for modification	C:\Windows\System32\GroupPolicy	setup.exe
File opened for modification	C:\Windows\System32\GroupPolicy\gpt.ini	setup.exe
File created	C:\Windows\System32\GroupPolicy\Machine\Registry.pol	setup.exe
File opened for modification	C:\Windows\System32\GroupPolicy\GPT.INI	setup.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

setup.exe

pid	Process
3372	setup.exe
3372	setup.exe

C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
1⤵
- Modifies firewall policy service
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
PID:3372

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
1⤵
PID:3008

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
1⤵
PID:4712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3372-1-0x00007FF784F75000-0x00007FF785217000-memory.dmp

Filesize
2.6MB

Download
memory/3372-4-0x00007FFCD77B0000-0x00007FFCD77B2000-memory.dmp

Filesize
8KB

Download
memory/3372-6-0x00007FFCD5290000-0x00007FFCD5292000-memory.dmp

Filesize
8KB

Download
memory/3372-5-0x00007FFCD5280000-0x00007FFCD5282000-memory.dmp

Filesize
8KB

Download
memory/3372-3-0x00007FFCD77A0000-0x00007FFCD77A2000-memory.dmp

Filesize
8KB

Download
memory/3372-2-0x00007FFCD7AA0000-0x00007FFCD7AA2000-memory.dmp

Filesize
8KB

Download
memory/3372-0-0x00007FFCD7A90000-0x00007FFCD7A92000-memory.dmp

Filesize
8KB

Download
memory/3372-11-0x00007FF784E10000-0x00007FF78557E000-memory.dmp

Filesize
7.4MB

Download
memory/3372-19-0x00007FF784F75000-0x00007FF785217000-memory.dmp

Filesize
2.6MB

Download
memory/3372-20-0x00007FF784E10000-0x00007FF78557E000-memory.dmp

Filesize
7.4MB

Download