urelas | def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f

Analysis

max time kernel
120s
max time network
85s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/08/2024, 04:06

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General

Target
def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f.exe
Size 56KB
Sample240804-ephx7azgjd
SHA256 def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f
MD5 37a2bc0718fd1e64051d5b3eb454bc79
SHA1 59fd61662918dea5955ad77d8a43d5df5709399e
SHA512 c4c6eed7bed29c05760a68901684cc510b2302ea6f389dfbc95dbcd252f1e5af51ac95d4702ae4538797a6d7ed2a780f87bd623bef51fffa06ce7731caae3e29
SSDEEP 1536:MQPzemdaNqAPG17k74qlmbbVgYyvxcd5jnGWqN7kS8HI:MOemdTd1o74qlmbbJ+x+IkJI
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

urelas discovery trojan

Malware Config

Extracted

Family

urelas

218.54.47.76
218.54.47.77
218.54.47.74

Signatures

Urelas
Urelas is a trojan targeting card games.
trojan urelas

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f.exe

Executes dropped EXE 1 IoCs

pid	Process
1420	biudfw.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	biudfw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4088 wrote to memory of 1420	4088	def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f.exe	87
PID 4088 wrote to memory of 1420	4088	def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f.exe	87
PID 4088 wrote to memory of 1420	4088	def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f.exe	87
PID 4088 wrote to memory of 4952	4088	def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f.exe	88
PID 4088 wrote to memory of 4952	4088	def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f.exe	88
PID 4088 wrote to memory of 4952	4088	def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f.exe	88

C:\Users\Admin\AppData\Local\Temp\def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f.exe
"C:\Users\Admin\AppData\Local\Temp\def331ad10d30978f1d88a196dcdd5cefa3ce0e2edf0fa8b36255f294859782f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4088
- C:\Users\Admin\AppData\Local\Temp\biudfw.exe
  "C:\Users\Admin\AppData\Local\Temp\biudfw.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1420
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

biudfw.exe

Path C:\Users\Admin\AppData\Local\Temp\biudfw.exe
Size 56KB
SHA256 1c4166ee70ebbaced45b3bf92c9778f53b31b6a6970bce4cae02bd1fb35926b8
MD5 1a182b6bf9d3fcf63b272a3c214fa2df
SHA1 be701496b4ca96f4b5fb2802d865a25b59dd3a5f
SHA512 d29951a3825be0693f945f1354f2e2fd9b838236e93645930128c9cbc03ffe0bf22e03f242ce7125705cd67a592d84d1dce71911362535793ffa0da67de187f6
SSDEEP 1536:MQPzemdaNqAPG17k74qlmbbVgYyvxcd5jnGWqN7kS8HE:MOemdTd1o74qlmbbJ+x+IkJE
MD5 SHA1 SHA512 SSDEEP

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golfinfo.ini

Path C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
Size 512B
SHA256 9af382db716e39144dda99d3d9afbd5df9b65e6a36af229e715c00539bce6336
MD5 7cdc8777d33db85bc19aefb64879a7f7
SHA1 f2d494d4dfe93a05eb58513935196e8578648adf
SHA512 34b075db80bf3704f76f9dd28eedffe88c9b3b5f730c79c27b9908fe2865847ae925487de2dcc1a8566bd3836d3b770ca3831d0b110312376684a92e42c6b48f
MD5 SHA1 SHA512

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sanfdr.bat

Path C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
Size 338B
SHA256 ab5130aed942753f5ae3acd322c1cbce5a044cf37453dc74e04bfc6a95ad3736
MD5 d8635929082df9ac0a5be0ff1d465f7a
SHA1 bf6a78a72d41e126a32b0b82873967e1edcd7356
SHA512 690d7bbe838a8d491256802e6702a3256c9271b4821387574f69f9a5b8a220e94729c9042cf267393c73dd8da4bf221b9ef286c7ac11740687d59dcf7417c759
MD5 SHA1 SHA512

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memory/1420-12-0x0000000000450000-0x0000000000476000-memory.dmp

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memory/1420-18-0x0000000000450000-0x0000000000476000-memory.dmp

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memory/1420-20-0x0000000000450000-0x0000000000476000-memory.dmp

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memory/1420-27-0x0000000000450000-0x0000000000476000-memory.dmp

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memory/4088-0-0x0000000000FA0000-0x0000000000FC6000-memory.dmp

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memory/4088-15-0x0000000000FA0000-0x0000000000FC6000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads