400c24bdb9b7dabfcd9a8a2f137550f338014d833d169c6e6f4252910fb95feb

Analysis

max time kernel
145s
max time network
130s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:15

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General

Target

a30ce01ad9f6493d46ac928557bcdd4d.exe
Size

373KB
MD5

a30ce01ad9f6493d46ac928557bcdd4d
SHA1

2c97797dac7e4139bc56c0374886c78cb1f1e2ea
SHA256

6d6bcd0687dea7214a7de4e162276b1505893f54fc1594fa917b20710f4234b5
SHA512

9101a89bad9b1a6f3c789526ea1a02ca04fd84188027979b192c720664ad5dcfff224cdfb8c3e4f7dbddf74d34fb37d751e2a544d286210c1e6940a2f7474459
SSDEEP

6144:tyMIULPy/x3xUArN62f7GU7njrbma/3LaQURrM2TuP6zJcN:XDy/xhUAtf7tjrbma7OJxuSz2

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2076	grotesque.exe

Loads dropped DLL 2 IoCs

pid	Process
2484	a30ce01ad9f6493d46ac928557bcdd4d.exe
2484	a30ce01ad9f6493d46ac928557bcdd4d.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\kokobaka = "C:\\Users\\Admin\\AppData\\Roaming\\future\\grotesque.exe"	a30ce01ad9f6493d46ac928557bcdd4d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\AudioClient	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2076 set thread context of 2816	2076	grotesque.exe	32

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 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	a30ce01ad9f6493d46ac928557bcdd4d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	grotesque.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2816	vbc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 2076	2484	a30ce01ad9f6493d46ac928557bcdd4d.exe	31
PID 2484 wrote to memory of 2076	2484	a30ce01ad9f6493d46ac928557bcdd4d.exe	31
PID 2484 wrote to memory of 2076	2484	a30ce01ad9f6493d46ac928557bcdd4d.exe	31
PID 2484 wrote to memory of 2076	2484	a30ce01ad9f6493d46ac928557bcdd4d.exe	31
PID 2076 wrote to memory of 2816	2076	grotesque.exe	32
PID 2076 wrote to memory of 2816	2076	grotesque.exe	32
PID 2076 wrote to memory of 2816	2076	grotesque.exe	32
PID 2076 wrote to memory of 2816	2076	grotesque.exe	32
PID 2076 wrote to memory of 2816	2076	grotesque.exe	32
PID 2076 wrote to memory of 2816	2076	grotesque.exe	32
PID 2076 wrote to memory of 2816	2076	grotesque.exe	32
PID 2076 wrote to memory of 2816	2076	grotesque.exe	32
PID 2076 wrote to memory of 2816	2076	grotesque.exe	32
PID 2076 wrote to memory of 2816	2076	grotesque.exe	32

C:\Users\Admin\AppData\Local\Temp\a30ce01ad9f6493d46ac928557bcdd4d.exe
"C:\Users\Admin\AppData\Local\Temp\a30ce01ad9f6493d46ac928557bcdd4d.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2484
- 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:2076
- - 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
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2816

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

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
373KB

MD5
3715f119a2b0110fc3d7ee7e032488ba

SHA1
7285774135912b5aceb2ee7d9d2ceff4a5ab1ef7

SHA256
5b6dced34280db8f59cc7a5db59f26a031f27f44e1738b08d7b642e9d1d313ee

SHA512
4d5c01bc19b9b56755841ee5be385be1e27c570c2816cb6ffccbb02eea10b0d3308ae5661f65c8a4a6b236f48659b5cd06f5b67df9f88665f995e805ee199bb0

Download Submit
memory/2076-14-0x00000000747B0000-0x0000000074D5B000-memory.dmp

Filesize
5.7MB

Download
memory/2076-16-0x00000000747B0000-0x0000000074D5B000-memory.dmp

Filesize
5.7MB

Download
memory/2076-24-0x00000000747B0000-0x0000000074D5B000-memory.dmp

Filesize
5.7MB

Download
memory/2484-0-0x00000000747B1000-0x00000000747B2000-memory.dmp

Filesize
4KB

Download
memory/2484-1-0x00000000747B0000-0x0000000074D5B000-memory.dmp

Filesize
5.7MB

Download
memory/2484-2-0x00000000747B0000-0x0000000074D5B000-memory.dmp

Filesize
5.7MB

Download
memory/2484-15-0x00000000747B0000-0x0000000074D5B000-memory.dmp

Filesize
5.7MB

Download
memory/2816-23-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2816-21-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2816-22-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2816-20-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2816-19-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2816-18-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2816-17-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2816-25-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads