9dd52cc07a1533cf026cb5cc09cd2a2a9f80755b38a822773c1538437a9ff1cd

Analysis

max time kernel
96s
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
16-12-2024 12:34

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General

Target

9dd52cc07a1533cf026cb5cc09cd2a2a9f80755b38a822773c1538437a9ff1cdN.dll
Size

307KB
MD5

ae4f22db8a6bc09277f8980661b8c290
SHA1

fa4b527332be684a247adbc274a30b6452ef4e21
SHA256

9dd52cc07a1533cf026cb5cc09cd2a2a9f80755b38a822773c1538437a9ff1cd
SHA512

674de422e52b2383784f2530741d1e1119d22e1840f6e590c76d78d40aab67042a16d5719d283297b056f10c6f9f0705ed8e7c221a46419f798a53b950f512f6
SSDEEP

6144:SRMepwYi+zAKbHwm5y5QgvyTuXHHel/Vgd:0PpdbHwmmQHTWy/Ve

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3888	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/0x0010000000023ba3-3.dat	upx
behavioral2/memory/3888-5-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral2/memory/3888-8-0x0000000000400000-0x000000000045B000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4716	2152	WerFault.exe	83
4536	3888	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 WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3940 wrote to memory of 2152	3940	rundll32.exe	83
PID 3940 wrote to memory of 2152	3940	rundll32.exe	83
PID 3940 wrote to memory of 2152	3940	rundll32.exe	83
PID 2152 wrote to memory of 3888	2152	rundll32.exe	84
PID 2152 wrote to memory of 3888	2152	rundll32.exe	84
PID 2152 wrote to memory of 3888	2152	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9dd52cc07a1533cf026cb5cc09cd2a2a9f80755b38a822773c1538437a9ff1cdN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3940
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9dd52cc07a1533cf026cb5cc09cd2a2a9f80755b38a822773c1538437a9ff1cdN.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2152
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3888
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3888 -s 264
      4⤵
      Program crash
      PID:4536
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2152 -s 620
    3⤵
    - Program crash
    PID:4716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2152 -ip 2152
1⤵
PID:4984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3888 -ip 3888
1⤵
PID:4756

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/2152-0-0x0000000075480000-0x00000000754D3000-memory.dmp

Filesize
332KB

Download
memory/2152-9-0x0000000075480000-0x00000000754D3000-memory.dmp

Filesize
332KB

Download
memory/3888-5-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/3888-6-0x0000000001F20000-0x0000000001F21000-memory.dmp

Filesize
4KB

Download
memory/3888-8-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download