712880e6000392edbe9045cbbd033f22764526206900c89bfa183fee451e8284

Analysis

max time kernel
93s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 02:33

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General

Target

712880e6000392edbe9045cbbd033f22764526206900c89bfa183fee451e8284N.dll
Size

188KB
MD5

d5400a1109bd37fdd4e2ed5b846ab410
SHA1

f6697d9ff80404a371e14fb85cf8532c8d66378d
SHA256

712880e6000392edbe9045cbbd033f22764526206900c89bfa183fee451e8284
SHA512

b7b0d1dc6dd8df93e61fdf6c7cbefef6e89e3b96176bc7f89d63026c8f29f3c6c7465e423b18a023402c51128f0071ed85fad26e444bb08ab59939593af9861a
SSDEEP

3072:RyxAfJTYCfDuoocFHGTuXHHetkqcqvnhzdui:AxgdYAxATuXHHel/Vgi

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4800	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/0x0009000000023cc7-3.dat	upx
behavioral2/memory/4800-4-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral2/memory/4800-8-0x0000000000400000-0x000000000045B000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4940	4840	WerFault.exe	84
3784	4800	WerFault.exe	85

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 3800 wrote to memory of 4840	3800	rundll32.exe	84
PID 3800 wrote to memory of 4840	3800	rundll32.exe	84
PID 3800 wrote to memory of 4840	3800	rundll32.exe	84
PID 4840 wrote to memory of 4800	4840	rundll32.exe	85
PID 4840 wrote to memory of 4800	4840	rundll32.exe	85
PID 4840 wrote to memory of 4800	4840	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\712880e6000392edbe9045cbbd033f22764526206900c89bfa183fee451e8284N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3800
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\712880e6000392edbe9045cbbd033f22764526206900c89bfa183fee451e8284N.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4840
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4800
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 264
      4⤵
      Program crash
      PID:3784
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4840 -s 620
    3⤵
    - Program crash
    PID:4940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4840 -ip 4840
1⤵
PID:4748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4800 -ip 4800
1⤵
PID:1252

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
105KB

MD5
dfb5daabb95dcfad1a5faf9ab1437076

SHA1
4a199569a9b52911bee7fb19ab80570cc5ff9ed1

SHA256
54282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0

SHA512
5d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8

Download Submit
memory/4800-4-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/4800-6-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/4800-8-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/4840-0-0x0000000010000000-0x0000000010031000-memory.dmp

Filesize
196KB

Download
memory/4840-7-0x0000000010000000-0x0000000010031000-memory.dmp

Filesize
196KB

Download