537bac863153ce4f18c0c7da6e98d47af94e42f46397044697e01e6db0296f08

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
27/05/2026, 23:48

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General

Target
$_54_/13.7.0.41868/Assistant/2345MgrDLL.dll
Size 1.7MB
Sample260527-3tkvcads61
SHA256 537bac863153ce4f18c0c7da6e98d47af94e42f46397044697e01e6db0296f08
MD5 f9b527c0a285bdb9f53e76e85b27ca3f
SHA1 2db6d256e398bb52cc91d63e38584eb87357dec3
SHA512 04400e2cc631d8ff6285c72b44df21687ba46ab9fd2a3225b201efcf47202673bbfdd016b00303adf0fb45a3767788baedf5e0ef5491df4249a87160cf391e84
SSDEEP 49152:bJXAvKkEllhChmolNckZELDYoW3lXPYZ/:bqveUJ8HHAlYR
TLSH
T1A48533F7E7B9A923E82D11F2B5604E501CAE3222891271B7893E576E13F7641BCCD193
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

discovery upx

Malware Config

Signatures

Custom signature

Detects executables referencing combination of virtualization drivers 1 IoCs

resource	yara_rule
behavioral15/memory/3996-2-0x0000000074F50000-0x00000000755B5000-memory.dmp	INDICATOR_SUSPICIOUS_VM_Evasion_VirtDrvComb

Custom signature

UPX dump on OEP (original entry point) 2 IoCs

resource	yara_rule
behavioral15/memory/3996-0-0x0000000074F50000-0x00000000755B5000-memory.dmp	UPX
behavioral15/memory/3996-2-0x0000000074F50000-0x00000000755B5000-memory.dmp	UPX

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral15/memory/3996-0-0x0000000074F50000-0x00000000755B5000-memory.dmp	upx
behavioral15/memory/3996-2-0x0000000074F50000-0x00000000755B5000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1704	3996	WerFault.exe	87

System Location Discovery: System Language Discovery 1 TTPs 1 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	rundll32.exe

Suspicious behavior: EnumeratesProcesses 40 IoCs

pid	Process
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe
3996	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 3996	2876	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$_54_\13.7.0.41868\Assistant\2345MgrDLL.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$_54_\13.7.0.41868\Assistant\2345MgrDLL.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3996
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3996 -s 704
    3⤵
    - Program crash
    PID:1704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3996 -ip 3996
1⤵
PID:4984

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

memory/3996-0-0x0000000074F50000-0x00000000755B5000-memory.dmp

Download

memory/3996-2-0x0000000074F50000-0x00000000755B5000-memory.dmp

Download