4bcbb8983fe7425976c5a1789deff73fb138e80981f5ebfef1f835bcc6757760

Analysis

max time kernel
147s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20250313-en
resource tags

arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:18

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General

Target

f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe
Size

373KB
MD5

1390a05960fe6acd3fd25279513346f0
SHA1

c65393f72d9e00c770ba3ef393701bc87e13b938
SHA256

f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5
SHA512

90c3d8d61687e3bccd9e6e15f6c5f3db6770471878b452f9a11874ea70391eac5639424fd3f4a03de7729d642355fb2e6e0c4e65e3e4765cb76111a7b2de5bcc
SSDEEP

6144:tyMIULPy/x3xUArN62f7GU7njrbma/3LaQURrM2TuP6zJcW:XDy/xhUAtf7tjrbma7OJxuSzp

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-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe

Executes dropped EXE 1 IoCs

pid	Process
4304	grotesque.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kokobaka = "C:\\Users\\Admin\\AppData\\Roaming\\future\\grotesque.exe"	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AudioClient	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4304 set thread context of 4676	4304	grotesque.exe	96

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\dtmp1.tmp	vbc.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	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	grotesque.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4676	vbc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3744 wrote to memory of 4304	3744	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe	94
PID 3744 wrote to memory of 4304	3744	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe	94
PID 3744 wrote to memory of 4304	3744	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe	94
PID 4304 wrote to memory of 4676	4304	grotesque.exe	96
PID 4304 wrote to memory of 4676	4304	grotesque.exe	96
PID 4304 wrote to memory of 4676	4304	grotesque.exe	96
PID 4304 wrote to memory of 4676	4304	grotesque.exe	96
PID 4304 wrote to memory of 4676	4304	grotesque.exe	96
PID 4304 wrote to memory of 4676	4304	grotesque.exe	96
PID 4304 wrote to memory of 4676	4304	grotesque.exe	96
PID 4304 wrote to memory of 4676	4304	grotesque.exe	96
PID 4304 wrote to memory of 4676	4304	grotesque.exe	96

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:3744
- 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:4304
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    3⤵
    - Adds Run key to start application
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    PID:4676

Network

MITRE ATT&CK Enterprise v15

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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Downloads

C:\Users\Admin\AppData\Roaming\future\grotesque.exe

Filesize
374KB

MD5
4ead2f986364889eef7154be0c546f78

SHA1
277bc1fdecb04c6b1239e946e71226fcc9e95257

SHA256
7881526cba258ddcf96eac6afe9d1b731c16aaca95a621c65e6c56f832cc2003

SHA512
6d2b953d8be59f0f463e93b87fdb6d310c13e340e30629829ea04e26e8eca21626bfb160c4df95c224e87edc145060b5476d2badd9fd52970c8723c5f6bb02d7

Download Submit
memory/3744-1-0x0000000074960000-0x0000000074F11000-memory.dmp

Filesize
5.7MB

Download
memory/3744-2-0x0000000074960000-0x0000000074F11000-memory.dmp

Filesize
5.7MB

Download
memory/3744-16-0x0000000074960000-0x0000000074F11000-memory.dmp

Filesize
5.7MB

Download
memory/3744-0-0x0000000074962000-0x0000000074963000-memory.dmp

Filesize
4KB

Download
memory/4304-28-0x0000000074960000-0x0000000074F11000-memory.dmp

Filesize
5.7MB

Download
memory/4304-17-0x0000000074960000-0x0000000074F11000-memory.dmp

Filesize
5.7MB

Download
memory/4304-19-0x0000000074960000-0x0000000074F11000-memory.dmp

Filesize
5.7MB

Download
memory/4304-18-0x0000000074960000-0x0000000074F11000-memory.dmp

Filesize
5.7MB

Download
memory/4676-24-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4676-27-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4676-26-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4676-25-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4676-23-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4676-20-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4676-29-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads