9b9a5be924d7b022d352bfdef50803781ef0f36e3c71154b1366c22d3d0ffb91

Analysis

max time kernel
95s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/09/2024, 09:18

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General

Target

e6ee52f8904cf80b48007f11b1d1f230N.dll
Size

656KB
MD5

e6ee52f8904cf80b48007f11b1d1f230
SHA1

efd4bc3ea3b43dcd25bed18da3e77aea2b7849e4
SHA256

9b9a5be924d7b022d352bfdef50803781ef0f36e3c71154b1366c22d3d0ffb91
SHA512

bb2e45cdecf6612aa9c711dc0f0d9a810108cfd9d9aa1b3159f0a1b98ec0e44e28f32401d370a74ee36ead9a2a84b97fe1f76327db7b51c58aa1aefd51ee0329
SSDEEP

6144:BYlT0wDQOCMkJ9zIg7x2NmP9IrlIZqHSSYCu5TEGI6/Ixz8t+LnAa049s8Z:qmwDcMkXVTyrlIZE0TEw/ImYnJ/W0

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3560	rundll32mgr.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x00090000000233f6-4.dat	upx
behavioral2/memory/3560-5-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral2/memory/3560-8-0x0000000000400000-0x000000000045B000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1216	3560	WerFault.exe	85
3948	3516	WerFault.exe	83

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32mgr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4664 wrote to memory of 3516	4664	rundll32.exe	83
PID 4664 wrote to memory of 3516	4664	rundll32.exe	83
PID 4664 wrote to memory of 3516	4664	rundll32.exe	83
PID 3516 wrote to memory of 3560	3516	rundll32.exe	85
PID 3516 wrote to memory of 3560	3516	rundll32.exe	85
PID 3516 wrote to memory of 3560	3516	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e6ee52f8904cf80b48007f11b1d1f230N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4664
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e6ee52f8904cf80b48007f11b1d1f230N.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3516
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3560
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3560 -s 268
      4⤵
      Program crash
      PID:1216
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3516 -s 640
    3⤵
    - Program crash
    PID:3948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3560 -ip 3560
1⤵
PID:4132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3516 -ip 3516
1⤵
PID:3464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
105KB

MD5
dfb5daabb95dcfad1a5faf9ab1437076

SHA1
4a199569a9b52911bee7fb19ab80570cc5ff9ed1

SHA256
54282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0

SHA512
5d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8

Download Submit
memory/3516-1-0x0000000010000000-0x0000000010127000-memory.dmp

Filesize
1.2MB

Download
memory/3516-9-0x0000000010000000-0x0000000010127000-memory.dmp

Filesize
1.2MB

Download
memory/3560-6-0x0000000000460000-0x0000000000461000-memory.dmp

Filesize
4KB

Download
memory/3560-5-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/3560-8-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download