urelas | 94c0e7fc45fc100f2af75b8bc523f8e8d5c7f7ce67110f5980d19be6ca4e4716

Analysis

max time kernel
136s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
31/08/2024, 08:52

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General

Target
41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029.exe
Size 59KB
Sample240831-ks235avgrf
SHA256 41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029
MD5 127e32e1d06e6764e992420c0922e3ef
SHA1 5bf828b5002479a6181ecad50c1cf81e1d19202f
SHA512 7fcf3fae6a11a7c9b5a94ad4f29e83b4d4233afd6c0ef9beb690024a8d688695d9375847710f6b4efd64d70e04b502d975202c0fd7078bb0f7ab03819303e4ed
SSDEEP 768:n5mhew0GpSyMe6hwUkdwJzh+qciaQRENEzxZbARtR06g2wqp4YPeznellmqGwxPO:nK0GjMeQG3iaQREuVZ6ro29p4YxbKd3
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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029.exe

Executes dropped EXE 1 IoCs

pid	Process
4736	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	41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029.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 1212 wrote to memory of 4736	1212	41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029.exe	89
PID 1212 wrote to memory of 4736	1212	41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029.exe	89
PID 1212 wrote to memory of 4736	1212	41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029.exe	89
PID 1212 wrote to memory of 544	1212	41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029.exe	90
PID 1212 wrote to memory of 544	1212	41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029.exe	90
PID 1212 wrote to memory of 544	1212	41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029.exe	90

C:\Users\Admin\AppData\Local\Temp\41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029.exe
"C:\Users\Admin\AppData\Local\Temp\41df4ef1e17c546e810fe805f005b14486a889791c038ec335719a4d84aa9029.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1212
- 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:4736
- 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:544

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 59KB
SHA256 0a5affea988ac6fe8bba6347f4d9364df28a410145e685ef73e28028d95cc523
MD5 6d5b3065791255b36f72e16bff972463
SHA1 33c7953a7f05cb9e5b0f8a36884ad394b84a3fc6
SHA512 574964a5e8f9d9d4d71c18309b9cac6cae302330066e2b0aebcf7c1042522f736addc21e5a14f13d9a8458b8e32f251409074ce95ece6cd392371b0e0e676a9e
SSDEEP 768:n5mhew0GpSyMe6hwUkdwJzh+qciaQRENEzxZbARtR06g2wqp4YPeznellmqGwxPC:nK0GjMeQG3iaQREuVZ6ro29p4YxbKdD
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 93e84a1ce3d72244762c16bde53c8baf2d55a7b739db70626d7ebfd00988e932
MD5 415b757cf7188ad63be9f77f738e9c27
SHA1 926f73e989081e710fdefdf10043335bae299e29
SHA512 ed98a76bb51475b2470a8823273066db04bffa18688cc05f2801f4d7978a0588eb0ffe689be60a9f7a8dfdfab46fa8d37e3ead7668d2785b70fba59056d8765c
MD5 SHA1 SHA512

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memory/1212-0-0x0000000000DE0000-0x0000000000E15000-memory.dmp

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memory/1212-14-0x0000000000DE0000-0x0000000000E15000-memory.dmp

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memory/4736-12-0x0000000000900000-0x0000000000935000-memory.dmp

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memory/4736-17-0x0000000000900000-0x0000000000935000-memory.dmp

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memory/4736-19-0x0000000000900000-0x0000000000935000-memory.dmp

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memory/4736-25-0x0000000000900000-0x0000000000935000-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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