1ac9bb25a9e3fdbd13e4395b1cb4b86aab6c778cd7e3279ebd76a7ccd7d26a3f

Analysis

max time kernel
150s
max time network
133s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
25/09/2026, 17:13

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General

Target
VrumVPN-Setup-1.4.6.exe
Size 38.5MB
Sample260925-vrnt8as15p
SHA256 1ac9bb25a9e3fdbd13e4395b1cb4b86aab6c778cd7e3279ebd76a7ccd7d26a3f
MD5 2b95e707970e8398636af14762c4a99e
SHA1 391131969520bf9f2c17b707d0f3121ebfc38c0c
SHA512 d5f40257ac905baa0985e6d5c15f74bcbddba995a90d66889d6d712dc0512361572394a12c05ac0515867469b27eef075f151e1ed8f48f348043f364f52bda03
SSDEEP 786432:FU8PN2Oachxm5zWBHXmmnf/c2+t5FtIFltEvfSJ6zTENPTxAmzGDUU:K8PNZbYWpWm8jt5vIdEv6JfLxaDUU
TLSH
T1A997333FB28E603DD0265A327A3695B6443BED61661748419AECF95CCFB58701E3E383
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

defense_evasion discovery execution installer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2708	VrumVPN-Setup-1.4.6.tmp

Stops running service(s) 4 TTPs
defense_evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
1172	sc.exe

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	VrumVPN-Setup-1.4.6.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	VrumVPN-Setup-1.4.6.exe

Inno Setup is an open-source installation builder for Windows applications. 2 IoCs

Inno Setup installer

installer

resource	yara_rule
behavioral2/memory/4876-0-0x00000000008D0000-0x00000000009F1000-memory.dmp	innosetup
behavioral2/memory/4876-7-0x00000000008D0000-0x00000000009F1000-memory.dmp	innosetup

Kills process with taskkill 6 IoCs

defense_evasion

pid	Process
3004	taskkill.exe
1456	taskkill.exe
6016	taskkill.exe
4504	taskkill.exe
1188	taskkill.exe
2392	taskkill.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1188	taskkill.exe
Token: SeDebugPrivilege	2392	taskkill.exe
Token: SeDebugPrivilege	3004	taskkill.exe
Token: SeDebugPrivilege	1456	taskkill.exe
Token: SeDebugPrivilege	6016	taskkill.exe
Token: SeDebugPrivilege	4504	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4876 wrote to memory of 2708	4876	VrumVPN-Setup-1.4.6.exe	89
PID 2708 wrote to memory of 1172	2708	VrumVPN-Setup-1.4.6.tmp	90
PID 2708 wrote to memory of 1188	2708	VrumVPN-Setup-1.4.6.tmp	92
PID 2708 wrote to memory of 2392	2708	VrumVPN-Setup-1.4.6.tmp	95
PID 2708 wrote to memory of 3004	2708	VrumVPN-Setup-1.4.6.tmp	97
PID 2708 wrote to memory of 1456	2708	VrumVPN-Setup-1.4.6.tmp	99
PID 2708 wrote to memory of 6016	2708	VrumVPN-Setup-1.4.6.tmp	101
PID 2708 wrote to memory of 4504	2708	VrumVPN-Setup-1.4.6.tmp	103

C:\Users\Admin\AppData\Local\Temp\VrumVPN-Setup-1.4.6.exe
"C:\Users\Admin\AppData\Local\Temp\VrumVPN-Setup-1.4.6.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4876
- C:\Users\Admin\AppData\Local\Temp\is-817581SV52.tmp\VrumVPN-Setup-1.4.6.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-817581SV52.tmp\VrumVPN-Setup-1.4.6.tmp" /SL5="$D0224,39121562,1123840,C:\Users\Admin\AppData\Local\Temp\VrumVPN-Setup-1.4.6.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2708
- - C:\Windows\SYSTEM32\sc.exe
    "sc.exe" stop "VrumVPNHelperService"
    3⤵
    - Launches sc.exe
    PID:1172
- - C:\Windows\SYSTEM32\taskkill.exe
    "taskkill" /im VrumVPN.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1188
- - C:\Windows\SYSTEM32\taskkill.exe
    "taskkill" /im VrumVPNHelperService.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2392
- - C:\Windows\SYSTEM32\taskkill.exe
    "taskkill" /im FlClashCore.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3004
- - C:\Windows\SYSTEM32\taskkill.exe
    "taskkill" /f /im VrumVPN.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1456
- - C:\Windows\SYSTEM32\taskkill.exe
    "taskkill" /f /im VrumVPNHelperService.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:6016
- - C:\Windows\SYSTEM32\taskkill.exe
    "taskkill" /f /im FlClashCore.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4504

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

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Downloads

VrumVPN-Setup-1.4.6.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-817581SV52.tmp\VrumVPN-Setup-1.4.6.tmp
Size 4.4MB
SHA256 008899305e9a9f04ba4fdb0eddd980f1b831764dea1e3fbe032bca1e4d2c9bad
MD5 df276deb9ca039869c7f0ec188afb7c3
SHA1 70a9f41f8cb1478916a19444325550189b159bcf
SHA512 157fca517ef629505ba72aff9ea82d45a9929e7b622cc44d0e21b20d7cb33870262427c12a03e0f3637110f85f715b89b2448e34ae68048f848ee9e46c979312
SSDEEP 98304:c9SZUvl30aj90ZFcvdQ0hdgvminQLMj+J5333N:LItJj90Z6RgKwY
TLSH
T1B1268F03B38C753AD4A71A3A983FA260583FBE213A16CD476BF8395C4F395416D2A747
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2708-16-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-22-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-36-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-8-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-9-0x0000000001240000-0x0000000001241000-memory.dmp

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memory/2708-12-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-14-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-34-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-6-0x0000000001240000-0x0000000001241000-memory.dmp

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memory/2708-18-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-20-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-24-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-26-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-28-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-30-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/2708-32-0x0000000000100000-0x000000000057C000-memory.dmp

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memory/4876-0-0x00000000008D0000-0x00000000009F1000-memory.dmp

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memory/4876-7-0x00000000008D0000-0x00000000009F1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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