4bcbb8983fe7425976c5a1789deff73fb138e80981f5ebfef1f835bcc6757760

Resubmissions

14/04/2025, 07:51

250414-jp1kfssjz9 10

14/04/2025, 07:46

250414-jl9nyssjt9 10

08/04/2025, 15:58

250408-tevasswl18 10

08/04/2025, 14:19

250408-rm2nqsvqw2 10

Analysis

max time kernel
148s
max time network
148s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250410-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250410-enlocale:en-usos:windows10-ltsc_2021-x64system
submitted
14/04/2025, 07:51

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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-1-5-21-3457531954-2054407110-1019940402-1000\Control Panel\International\Geo\Nation	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe

Executes dropped EXE 2 IoCs

pid	Process
5152	grotesque.exe
3636	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-1-5-21-3457531954-2054407110-1019940402-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kokobaka = "C:\\Users\\Admin\\AppData\\Roaming\\future\\grotesque.exe"	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3457531954-2054407110-1019940402-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AudioClient	vbc.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5152 set thread context of 2600	5152	grotesque.exe	84
PID 3636 set thread context of 3240	3636	grotesque.exe	87

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2600	vbc.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3884 wrote to memory of 5152	3884	cmd.exe	82
PID 3884 wrote to memory of 5152	3884	cmd.exe	82
PID 3884 wrote to memory of 5152	3884	cmd.exe	82
PID 5124 wrote to memory of 3636	5124	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe	83
PID 5124 wrote to memory of 3636	5124	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe	83
PID 5124 wrote to memory of 3636	5124	f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe	83
PID 5152 wrote to memory of 2600	5152	grotesque.exe	84
PID 5152 wrote to memory of 2600	5152	grotesque.exe	84
PID 5152 wrote to memory of 2600	5152	grotesque.exe	84
PID 5152 wrote to memory of 2600	5152	grotesque.exe	84
PID 5152 wrote to memory of 2600	5152	grotesque.exe	84
PID 5152 wrote to memory of 2600	5152	grotesque.exe	84
PID 5152 wrote to memory of 2600	5152	grotesque.exe	84
PID 5152 wrote to memory of 2600	5152	grotesque.exe	84
PID 5152 wrote to memory of 2600	5152	grotesque.exe	84
PID 3636 wrote to memory of 3240	3636	grotesque.exe	87
PID 3636 wrote to memory of 3240	3636	grotesque.exe	87
PID 3636 wrote to memory of 3240	3636	grotesque.exe	87
PID 3636 wrote to memory of 3240	3636	grotesque.exe	87
PID 3636 wrote to memory of 3240	3636	grotesque.exe	87
PID 3636 wrote to memory of 3240	3636	grotesque.exe	87
PID 3636 wrote to memory of 3240	3636	grotesque.exe	87
PID 3636 wrote to memory of 3240	3636	grotesque.exe	87
PID 3636 wrote to memory of 3240	3636	grotesque.exe	87

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:5124
- 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:3636
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    3⤵
    PID:3240

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:3884
- 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:5152
- - 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:2600

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c 邐邐邐邐Volume2\Windows\System32\cmd.exe
1⤵
PID:6084

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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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\grotesque.exe.log

Filesize
400B

MD5
e392ed9396d4520813bf96aaca33f2df

SHA1
804c71ec6dd3e2e1afa30271f5f949c30ce76f30

SHA256
22cd5d17135f50405c4d76c1a6e5e894a80cb9e31d8c995fbc9729d12f02e738

SHA512
ed49b473c3c132c25758054d096af707fac0fbd7ecaf36a748392501a2eb488a83e0a026e2a47823976c100b6bc7029c0924ca40e3fbfc4872f1b7bbe075943a

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

Filesize
374KB

MD5
0c20f1f3609aa691ba0474831aecc526

SHA1
f1d04440d1e2fd1a4216433f97554f0a20cff1cd

SHA256
d2b45dff21f76562503965664286e5e12a5ad2d754d97ae2f4cf46ab6f0e490e

SHA512
0fa1825af2313924a2a2ca9a3961e4033f85aa6714fb86154433a4ac3df3439f818c7c1cb5fb5336a7c5ccfd820e44d7c2ac3accdf98942f1cb8041b7b167f78

Download Submit
memory/2600-19-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2600-36-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2600-27-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2600-26-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2600-25-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2600-22-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2600-23-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/3240-34-0x0000000000470000-0x0000000000539000-memory.dmp

Filesize
804KB

Download
memory/3240-33-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/3240-31-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/3636-18-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/3636-16-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/3636-17-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/3636-32-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/5124-14-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/5124-0-0x00000000753D2000-0x00000000753D3000-memory.dmp

Filesize
4KB

Download
memory/5124-15-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/5124-12-0x00000000753D2000-0x00000000753D3000-memory.dmp

Filesize
4KB

Download
memory/5124-2-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/5124-1-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/5152-24-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/5152-9-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/5152-10-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download
memory/5152-8-0x00000000753D0000-0x0000000075981000-memory.dmp

Filesize
5.7MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads