4bcbb8983fe7425976c5a1789deff73fb138e80981f5ebfef1f835bcc6757760

max time kernel
8s
max time network
7s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
25/04/2025, 14:35

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Reason

Machine shutdown

General

Target
f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe
Size 373KB
Sample250425-ryf66svsby
SHA256 f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5
MD5 1390a05960fe6acd3fd25279513346f0
SHA1 c65393f72d9e00c770ba3ef393701bc87e13b938
SHA512 90c3d8d61687e3bccd9e6e15f6c5f3db6770471878b452f9a11874ea70391eac5639424fd3f4a03de7729d642355fb2e6e0c4e65e3e4765cb76111a7b2de5bcc
SSDEEP 6144:tyMIULPy/x3xUArN62f7GU7njrbma/3LaQURrM2TuP6zJcW:XDy/xhUAtf7tjrbma7OJxuSzp
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery persistence

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-1-5-21-446031748-3036493239-2009529691-1000\Control Panel\International\Geo\Nation	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe

Executes dropped EXE 2 IoCs

pid	Process
3448	grotesque.exe
4692	grotesque.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-446031748-3036493239-2009529691-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kokobaka = "C:\\Users\\Admin\\AppData\\Roaming\\future\\grotesque.exe"	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3448 set thread context of 4808	3448	grotesque.exe	97

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	grotesque.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	grotesque.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5432 wrote to memory of 3448	5432	cmd.exe	94
PID 5432 wrote to memory of 3448	5432	cmd.exe	94
PID 5432 wrote to memory of 3448	5432	cmd.exe	94
PID 5720 wrote to memory of 4692	5720	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe	96
PID 5720 wrote to memory of 4692	5720	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe	96
PID 5720 wrote to memory of 4692	5720	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe	96
PID 3448 wrote to memory of 4808	3448	grotesque.exe	97
PID 3448 wrote to memory of 4808	3448	grotesque.exe	97
PID 3448 wrote to memory of 4808	3448	grotesque.exe	97
PID 3448 wrote to memory of 4808	3448	grotesque.exe	97
PID 3448 wrote to memory of 4808	3448	grotesque.exe	97
PID 3448 wrote to memory of 4808	3448	grotesque.exe	97
PID 3448 wrote to memory of 4808	3448	grotesque.exe	97
PID 3448 wrote to memory of 4808	3448	grotesque.exe	97
PID 3448 wrote to memory of 4808	3448	grotesque.exe	97

C:\Users\Admin\AppData\Local\Temp\f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe
"C:\Users\Admin\AppData\Local\Temp\f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5720
- C:\Users\Admin\AppData\Roaming\future\grotesque.exe
  "C:\Users\Admin\AppData\Roaming\future\grotesque.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4692

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\future\grotesque.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:5432
- C:\Users\Admin\AppData\Roaming\future\grotesque.exe
  C:\Users\Admin\AppData\Roaming\future\grotesque.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3448
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    3⤵
    PID:4808

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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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grotesque.exe

Path C:\Users\Admin\AppData\Roaming\future\grotesque.exe
Size 374KB
SHA256 dcef6604c588be2326d76dc262edaad58dd8e4f88cb6e006907812828f175dfa
MD5 f1162c8e82329b37394b988f69206549
SHA1 26ff3038f548f3660805d61d6e250019dbeb83c9
SHA512 5afc405e665e42ddba5de1e5ab198f5fb480345a629746e1a92945e9f6fd495726a67d24e8099df2e8d6e7f00141fd9febe4ce17a07ac2f43769dacc2d8ce38b
SSDEEP 6144:tyMIULPy/x3xUArN62f7GU7njrbma/3LaQURrM2TuP6zJc6I:XDy/xhUAtf7tjrbma7OJxuSz8
MD5 SHA1 SHA512 SSDEEP

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memory/3448-23-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/3448-8-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/3448-9-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/3448-10-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/4692-15-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/4692-16-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/4808-20-0x0000000000400000-0x0000000000466000-memory.dmp

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memory/4808-21-0x0000000000400000-0x0000000000466000-memory.dmp

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memory/4808-17-0x0000000000400000-0x0000000000466000-memory.dmp

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memory/4808-22-0x0000000000400000-0x0000000000466000-memory.dmp

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memory/5720-14-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/5720-13-0x00000000753A2000-0x00000000753A3000-memory.dmp

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memory/5720-2-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/5720-0-0x00000000753A2000-0x00000000753A3000-memory.dmp

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memory/5720-1-0x00000000753A0000-0x0000000075951000-memory.dmp

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Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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