urelas | 4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756

Analysis

max time kernel
94s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02/09/2024, 21:40

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General

Target
4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756.exe
Size 60KB
Sample240902-1jc1msyfrc
SHA256 4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756
MD5 ee9e0213aa54c753ba807d71159510c7
SHA1 537673df5ae932566315f458460dd85df7139f5f
SHA512 fa7a1d201464eeb2d31fa6d9ef106334d825ae1065ae89efb821ef9e92e868d98ffcb1ee1a272300651309b7bd1e60b9c154f11a04ba01efa481bb86ff3d638c
SSDEEP 768:n5mhew0GpSyMe6hwUkdwJzh+qciaQRENEzxZbARtR06g2wqp4YPeznellmqGwxPK:nK0GjMeQG3iaQREuVZ6ro29p4YxbKdd
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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756.exe

Executes dropped EXE 1 IoCs

pid	Process
860	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	4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756.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 4608 wrote to memory of 860	4608	4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756.exe	87
PID 4608 wrote to memory of 860	4608	4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756.exe	87
PID 4608 wrote to memory of 860	4608	4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756.exe	87
PID 4608 wrote to memory of 1504	4608	4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756.exe	88
PID 4608 wrote to memory of 1504	4608	4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756.exe	88
PID 4608 wrote to memory of 1504	4608	4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756.exe	88

C:\Users\Admin\AppData\Local\Temp\4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756.exe
"C:\Users\Admin\AppData\Local\Temp\4dfe21a716b43f41ec2fc73e19cf2edab57b945044a4918f8256282d7fbd8756.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4608
- 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:860
- 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:1504

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 60KB
SHA256 04a88866505c0bb3f9a10e7e77732f3affc7de9bc6fedcb9bd1f6de59a8713dc
MD5 dfcb6f828ed9534413640fad1fe4ec75
SHA1 bc42db64c1d71d344f6d42b1a72fe5cf8d5833a8
SHA512 ff4af5e79384eabedc388d652944b05ac188396deba9899f4e810f4fce12eac094c473c1b3f65eaa646973e258a605c9770000f30cf8e9250741e57a0c91c743
SSDEEP 768:n5mhew0GpSyMe6hwUkdwJzh+qciaQRENEzxZbARtR06g2wqp4YPeznellmqGwxP5:nK0GjMeQG3iaQREuVZ6ro29p4YxbKdE
MD5 SHA1 SHA512 SSDEEP

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golfinfo.ini

Path C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
Size 512B
SHA256 a945a44cfe50423c01f26a16445ed177a347052e791364a9cb7de6bcaa18f3c1
MD5 55e10a9af74d3f3fa5ae3cb7ff5ad9d4
SHA1 449221fd8d7196a54de2bd583625d8d1b64db56a
SHA512 4af5ba74467b4c61302ea9571f19346c05f911843f2c6153fcd9a7340f9bc6e1f8867cdb72ec7ba0dc4930199aa5c302711ad5da9fd35241839418f6e70a515a
MD5 SHA1 SHA512

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sanfdr.bat

Path C:\Users\Admin\AppData\Local\Temp\sanfdr.bat
Size 338B
SHA256 63d4994fb19a3fa54e848a1d066f623fb6fff35ac9c82cd9c2d02f1072ccf072
MD5 2685493e86d18a268f8a73ce603ddebe
SHA1 5c79a8d1cae866b28105ba9b3ff57f67af83b0f1
SHA512 f05bc66d05485d3d32405a369582ff1e839ec22b28b1a7080b31bcef8527fc6ebfd7646b25d10f65c2aef3e7c90f18c32dc64d5174c89dc03c0e6b9de00519a7
MD5 SHA1 SHA512

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memory/860-10-0x0000000000E10000-0x0000000000E45000-memory.dmp

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memory/860-18-0x0000000000E10000-0x0000000000E45000-memory.dmp

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memory/860-20-0x0000000000E10000-0x0000000000E45000-memory.dmp

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memory/860-26-0x0000000000E10000-0x0000000000E45000-memory.dmp

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memory/4608-0-0x0000000000E90000-0x0000000000EC5000-memory.dmp

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memory/4608-15-0x0000000000E90000-0x0000000000EC5000-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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