privateloader | 831c6cc29413ef037220c63a9bf30e2ad094c0a9ca343f71258502944869a9a2

Analysis

max time kernel
61s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19-01-2023 11:48

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General

Target

file.exe
Size

4.0MB
MD5

b1b74e8866c7a221a6b658d95c383dc8
SHA1

c5b9db5706be26b3064b6f69dacfdf37f2e62568
SHA256

831c6cc29413ef037220c63a9bf30e2ad094c0a9ca343f71258502944869a9a2
SHA512

20f77f7fc3040f45d72eb475577f974928f389d29c3feb07171d51ce493e3a5a7f869400b4c86c58e0cefd1a9dc5faa47bc10d23455a0c60719be8faaebff9c0
SSDEEP

98304:XpfXL4dK7P7CbM5zD6sILTjblMS0uc25rTNp5SnluY2968:Zzpi4osI3jhMSNc2jSn8j968

Score

10^/10

privateloader discovery evasion loader spyware stealer themida trojan

Malware Config

Signatures

PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
loader privateloader
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

file.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ file.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	file.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

file.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	file.exe

Loads dropped DLL 10 IoCs

Processes:

file.exe

pid process

3276 file.exe
3276 file.exe
3276 file.exe
3276 file.exe
3276 file.exe
3276 file.exe
3276 file.exe
3276 file.exe
3276 file.exe
3276 file.exe
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
3276	file.exe
3276	file.exe
3276	file.exe
3276	file.exe
3276	file.exe
3276	file.exe
3276	file.exe
3276	file.exe
3276	file.exe
3276	file.exe

Themida packer 8 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/3276-132-0x0000000000A20000-0x000000000125F000-memory.dmp	themida
behavioral2/memory/3276-133-0x0000000000A20000-0x000000000125F000-memory.dmp	themida
behavioral2/memory/3276-134-0x0000000000A20000-0x000000000125F000-memory.dmp	themida
behavioral2/memory/3276-135-0x0000000000A20000-0x000000000125F000-memory.dmp	themida
behavioral2/memory/3276-137-0x0000000000A20000-0x000000000125F000-memory.dmp	themida
behavioral2/memory/3276-138-0x0000000000A20000-0x000000000125F000-memory.dmp	themida
behavioral2/memory/3276-139-0x0000000000A20000-0x000000000125F000-memory.dmp	themida
behavioral2/memory/3276-150-0x0000000000A20000-0x000000000125F000-memory.dmp	themida

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

file.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA file.exe
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

14 ipinfo.io
15 ipinfo.io
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

file.exe

pid process

3276 file.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2896 3276 WerFault.exe file.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	file.exe

flow	ioc
14	ipinfo.io
15	ipinfo.io

pid	process
3276	file.exe

pid	pid_target	process	target process
2896	3276	WerFault.exe	file.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

file.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	file.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

file.exe

pid process

3276 file.exe
3276 file.exe
3276 file.exe
3276 file.exe

pid	process
3276	file.exe
3276	file.exe
3276	file.exe
3276	file.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3276

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3276 -s 1248
2⤵
- Program crash
PID:2896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3276 -ip 3276
1⤵
PID:3432

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\LocalSimbazLP7oCOakKx\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\LocalSimbazLP7oCOakKx\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\LocalSimbazLP7oCOakKx\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\LocalSimbazLP7oCOakKx\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\LocalSimbazLP7oCOakKx\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\LocalSimbazLP7oCOakKx\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\LocalSimbazLP7oCOakKx\mozglue.dll
Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
C:\Users\Admin\AppData\Local\Temp\LocalSimbazLP7oCOakKx\nss3.dll
Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
C:\Users\Admin\AppData\Local\Temp\LocalSimbazLP7oCOakKx\softokn3.dll
Filesize
141KB

MD5
a2ee53de9167bf0d6c019303b7ca84e5

SHA1
2a3c737fa1157e8483815e98b666408a18c0db42

SHA256
43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

SHA512
45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\LocalSimbazLP7oCOakKx\softokn3.dll
Filesize
141KB

MD5
a2ee53de9167bf0d6c019303b7ca84e5

SHA1
2a3c737fa1157e8483815e98b666408a18c0db42

SHA256
43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

SHA512
45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

Download Submit
memory/3276-139-0x0000000000A20000-0x000000000125F000-memory.dmp

Filesize
8.2MB

Download
memory/3276-132-0x0000000000A20000-0x000000000125F000-memory.dmp

Filesize
8.2MB

Download
memory/3276-138-0x0000000000A20000-0x000000000125F000-memory.dmp

Filesize
8.2MB

Download
memory/3276-137-0x0000000000A20000-0x000000000125F000-memory.dmp

Filesize
8.2MB

Download
memory/3276-135-0x0000000000A20000-0x000000000125F000-memory.dmp

Filesize
8.2MB

Download
memory/3276-136-0x00000000772B0000-0x0000000077453000-memory.dmp

Filesize
1.6MB

Download
memory/3276-134-0x0000000000A20000-0x000000000125F000-memory.dmp

Filesize
8.2MB

Download
memory/3276-133-0x0000000000A20000-0x000000000125F000-memory.dmp

Filesize
8.2MB

Download
memory/3276-150-0x0000000000A20000-0x000000000125F000-memory.dmp

Filesize
8.2MB

Download
memory/3276-151-0x00000000772B0000-0x0000000077453000-memory.dmp

Filesize
1.6MB

Download