6d567d0959ae8c664714535ee960910c49e5f61971858fa396e9edb19688c1b3

Analysis

max time kernel
97s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2025, 17:53

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General

Target

Uninstall RBXIDLE.exe
Size

141KB
MD5

8f118a803d0e0a3c371f7f07a20aea4d
SHA1

0c75940c1fdd173b42d57ebad53c0f96dc91e98a
SHA256

37d5e0c4ba5262b89ab1b882578261dd7a9f40a4af55218470ec2042e7dc222a
SHA512

c01149a41f1f1a9f6419c3952f0c559162816fbd5b85d7a86f50274c4e23fba3223b52aa18efff788b51d841cd812b4d948d308df5d9c261481d4db9146db2d3
SSDEEP

3072:QuO9CtrA8AxmQYTyYzu3CaTXbOaH2tvhOEA1RJCir86SrSrvrIa3E:rO94ruMQfuu3CCXbOs2t0EyL+taU

Score

7^/10

discovery

Malware Config

Signatures

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-1-5-21-869607583-2483572573-2297019986-1000\Control Panel\International\Geo\Nation	Un_A.exe

Executes dropped EXE 1 IoCs

pid	Process
1852	Un_A.exe

Loads dropped DLL 9 IoCs

pid	Process
1852	Un_A.exe
1852	Un_A.exe
1852	Un_A.exe
1852	Un_A.exe
1852	Un_A.exe
1852	Un_A.exe
1852	Un_A.exe
1852	Un_A.exe
1852	Un_A.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 2 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	Un_A.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Uninstall RBXIDLE.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1852	Un_A.exe
1852	Un_A.exe
1852	Un_A.exe
1852	Un_A.exe
1852	Un_A.exe
1852	Un_A.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 1852	4460	Uninstall RBXIDLE.exe	88
PID 4460 wrote to memory of 1852	4460	Uninstall RBXIDLE.exe	88
PID 4460 wrote to memory of 1852	4460	Uninstall RBXIDLE.exe	88

C:\Users\Admin\AppData\Local\Temp\Uninstall RBXIDLE.exe
"C:\Users\Admin\AppData\Local\Temp\Uninstall RBXIDLE.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4460
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1852

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsn9A6C.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

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C:\Users\Admin\AppData\Local\Temp\nsn9A6C.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsn9A6C.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

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C:\Users\Admin\AppData\Local\Temp\nsn9A6C.tmp\nsProcess.dll

Filesize
4KB

MD5
f0438a894f3a7e01a4aae8d1b5dd0289

SHA1
b058e3fcfb7b550041da16bf10d8837024c38bf6

SHA256
30c6c3dd3cc7fcea6e6081ce821adc7b2888542dae30bf00e881c0a105eb4d11

SHA512
f91fcea19cbddf8086affcb63fe599dc2b36351fc81ac144f58a80a524043ddeaa3943f36c86ebae45dd82e8faf622ea7b7c9b776e74c54b93df2963cfe66cc7

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C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe

Filesize
141KB

MD5
8f118a803d0e0a3c371f7f07a20aea4d

SHA1
0c75940c1fdd173b42d57ebad53c0f96dc91e98a

SHA256
37d5e0c4ba5262b89ab1b882578261dd7a9f40a4af55218470ec2042e7dc222a

SHA512
c01149a41f1f1a9f6419c3952f0c559162816fbd5b85d7a86f50274c4e23fba3223b52aa18efff788b51d841cd812b4d948d308df5d9c261481d4db9146db2d3

Download Submit