214082ec55ebca25be21e5b5227ad0e89c08026c55a21fc57dc4bd2764f5d28f

Analysis

max time kernel
146s
max time network
155s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250314-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-x64system
submitted
05/04/2025, 12:07

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General

Target

rihuata-main/gramiltter.exe
Size

27KB
MD5

2ff8e057084b5c180e9b447e08d2d747
SHA1

92b35c1b8f72c18dd3e945743cb93e8531d73e2b
SHA256

accdada8772018e58baa0ecb3e79c507eb09c7d67f22f59e323c74b51eac9072
SHA512

7ae542c6ca36e5ed934ca503f3489144e0ec7d81ad246af88bb525cb494f6725df0aa9131c72afe79ff02364dd65ec7a3ffb01846f99836feff06746193af251
SSDEEP

384:9XKCifuPVcppE4KeEdAl7H0I4GSFdr0NAbybMAf3L+9tHmXel7xI:96CiWPVypE4QalMZmoZ3Hmw7

Score

7^/10

discovery

Malware Config

Signatures

Checks computer location settings 2 TTPs 2 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-1-5-21-1498259476-758239146-3116387113-1000\Control Panel\International\Geo\Nation	gramiltter.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1498259476-758239146-3116387113-1000\Control Panel\International\Geo\Nation	service.exe

Executes dropped EXE 1 IoCs

pid	Process
5076	service.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 6 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	gramiltter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	service.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1644	schtasks.exe
3256	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 2408	1380	gramiltter.exe	82
PID 1380 wrote to memory of 2408	1380	gramiltter.exe	82
PID 1380 wrote to memory of 2408	1380	gramiltter.exe	82
PID 2408 wrote to memory of 1644	2408	cmd.exe	84
PID 2408 wrote to memory of 1644	2408	cmd.exe	84
PID 2408 wrote to memory of 1644	2408	cmd.exe	84
PID 5076 wrote to memory of 4820	5076	service.exe	95
PID 5076 wrote to memory of 4820	5076	service.exe	95
PID 5076 wrote to memory of 4820	5076	service.exe	95
PID 4820 wrote to memory of 3256	4820	cmd.exe	97
PID 4820 wrote to memory of 3256	4820	cmd.exe	97
PID 4820 wrote to memory of 3256	4820	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\rihuata-main\gramiltter.exe
"C:\Users\Admin\AppData\Local\Temp\rihuata-main\gramiltter.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1380
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C schtasks /create /tn GoogleUpdaterex /tr %APPDATA%\service.exe /st 00:00 /du 9999:59 /sc daily /ri 1 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2408
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /tn GoogleUpdaterex /tr C:\Users\Admin\AppData\Roaming\service.exe /st 00:00 /du 9999:59 /sc daily /ri 1 /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1644

C:\Users\Admin\AppData\Roaming\service.exe
"C:\Users\Admin\AppData\Roaming\service.exe"
1⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C schtasks /create /tn GoogleUpdaterex /tr %APPDATA%\service.exe /st 00:00 /du 9999:59 /sc daily /ri 1 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4820
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /tn GoogleUpdaterex /tr C:\Users\Admin\AppData\Roaming\service.exe /st 00:00 /du 9999:59 /sc daily /ri 1 /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3256

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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

C:\Users\Admin\AppData\Roaming\service.exe

Filesize
27KB

MD5
2ff8e057084b5c180e9b447e08d2d747

SHA1
92b35c1b8f72c18dd3e945743cb93e8531d73e2b

SHA256
accdada8772018e58baa0ecb3e79c507eb09c7d67f22f59e323c74b51eac9072

SHA512
7ae542c6ca36e5ed934ca503f3489144e0ec7d81ad246af88bb525cb494f6725df0aa9131c72afe79ff02364dd65ec7a3ffb01846f99836feff06746193af251

Download Submit
memory/1380-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/5076-5-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads