782c4fbc5623fe760d6e163c18bb63e19bf655e79f42fdf2ed2014c71fce07bd

Analysis

max time kernel
93s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2024 11:03

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General

Target

782c4fbc5623fe760d6e163c18bb63e19bf655e79f42fdf2ed2014c71fce07bdN.dll
Size

170KB
MD5

2aa84b378f1dd7c9e832eb32841580b0
SHA1

ec27c042aebf7dcd788160fba114307785f3271e
SHA256

782c4fbc5623fe760d6e163c18bb63e19bf655e79f42fdf2ed2014c71fce07bd
SHA512

c7d9523bc64325fb7bbd3376c6bdfc1e97a5858ad4ab7af67fe32aca2c1911ff603eefc00fb18b0544319833f7b534fe1a1b8716d37630cd0373444d536a945b
SSDEEP

3072:bcwO/iTOdgWtJ6LkHn/rkiENpYrvQaSISixCC/xwp2rrUDu:bDTOdgWtYCjkR/YrvQaSrcwptDu

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1412	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000b000000023bc0-3.dat	upx
behavioral2/memory/1412-8-0x0000000000400000-0x0000000000477000-memory.dmp	upx
behavioral2/memory/1412-11-0x0000000000400000-0x0000000000477000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4004	1412	WerFault.exe	84

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 AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4684	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 4684	4408	rundll32.exe	83
PID 4408 wrote to memory of 4684	4408	rundll32.exe	83
PID 4408 wrote to memory of 4684	4408	rundll32.exe	83
PID 4684 wrote to memory of 1412	4684	rundll32.exe	84
PID 4684 wrote to memory of 1412	4684	rundll32.exe	84
PID 4684 wrote to memory of 1412	4684	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\782c4fbc5623fe760d6e163c18bb63e19bf655e79f42fdf2ed2014c71fce07bdN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\782c4fbc5623fe760d6e163c18bb63e19bf655e79f42fdf2ed2014c71fce07bdN.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4684
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1412
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1412 -s 264
      4⤵
      Program crash
      PID:4004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1412 -ip 1412
1⤵
PID:1340

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

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Downloads

C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
134KB

MD5
774b9c11bcc0dbf50425e3935100b905

SHA1
519338139ca0deaa4b42e056468087e18fd1f253

SHA256
be6cab2cfd23bd5cd633264eb9a7d55f0feacda3aff05db031af04a531585590

SHA512
6d9a570b441f96013bc5ae2bdc6422beb0f48c3953da00e2443e94de531f8abda9ad8403380543f95e0ac16d84985e1a5829556ff7bf26fca85afbc86fc07872

Download Submit
memory/1412-10-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download
memory/1412-8-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/1412-11-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/4684-0-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/4684-6-0x0000000000B70000-0x0000000000B71000-memory.dmp

Filesize
4KB

Download
memory/4684-7-0x0000000003960000-0x0000000003961000-memory.dmp

Filesize
4KB

Download
memory/4684-9-0x00000000779D2000-0x00000000779D3000-memory.dmp

Filesize
4KB

Download
memory/4684-5-0x0000000000B60000-0x0000000000B61000-memory.dmp

Filesize
4KB

Download
memory/4684-12-0x00000000779D2000-0x00000000779D3000-memory.dmp

Filesize
4KB

Download