3c0d44d01b35afec1667164f23098170ee2284e9eab57ea17aed99f5493b9cfe

Analysis

max time kernel
96s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/10/2024, 12:10

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General

Target
3c0d44d01b35afec1667164f23098170ee2284e9eab57ea17aed99f5493b9cfeN.dll
Size 196KB
Sample241005-pcbcpaxdpf
SHA256 3c0d44d01b35afec1667164f23098170ee2284e9eab57ea17aed99f5493b9cfe
MD5 ac38b7a736cf5d67ae6faa60b8368ca0
SHA1 57b21163361073fc90e7c0f11eed80899918c823
SHA512 fcd77192cb6e75cd9a715cb968b4c3c715fed0e208f0b4d702de1985eed0830b1858d5a50163c3dc7254c50909e9706906a34e8f26e4353b625ea1ae6ac9713e
SSDEEP 3072:ZMnt5th7FP0aVZrWNoBfJSY4IfTHrcsGH089TtE/3f53N0:WDF8aiMhSY4yTHwsGHTei
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
744	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/0x0009000000023411-3.dat	upx
behavioral2/memory/744-4-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral2/memory/744-7-0x0000000000400000-0x000000000045B000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3056	744	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 2644 wrote to memory of 1376	2644	rundll32.exe	82
PID 2644 wrote to memory of 1376	2644	rundll32.exe	82
PID 2644 wrote to memory of 1376	2644	rundll32.exe	82
PID 1376 wrote to memory of 744	1376	rundll32.exe	83
PID 1376 wrote to memory of 744	1376	rundll32.exe	83
PID 1376 wrote to memory of 744	1376	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3c0d44d01b35afec1667164f23098170ee2284e9eab57ea17aed99f5493b9cfeN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3c0d44d01b35afec1667164f23098170ee2284e9eab57ea17aed99f5493b9cfeN.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1376
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:744
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 744 -s 264
      4⤵
      Program crash
      PID:3056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 744 -ip 744
1⤵
PID:4288

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

rundll32mgr.exe

Path C:\Windows\SysWOW64\rundll32mgr.exe
Size 105KB
SHA256 54282ec29d4993ed6e9972122cfbb70bba4898a21d527bd9e72a166d7ec2fdc0
MD5 dfb5daabb95dcfad1a5faf9ab1437076
SHA1 4a199569a9b52911bee7fb19ab80570cc5ff9ed1
SHA512 5d31c34403ab5f8db4a6d84f2b5579d4ea18673914b626d78e458a648ac20ddd8e342818e807331036d7bb064f596a02b9737acac42fbead29260343a30717e8
SSDEEP 1536:MOC0FvV4OguHxjhpA4Bm7uW0vSUsghQevBFkutIbgTuFqKRr0aF5frleGhd9TfBi:MwV4OgSzBmh04eZFkz3Rr0gwGj9Tf8
MD5 SHA1 SHA512 SSDEEP

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memory/744-4-0x0000000000400000-0x000000000045B000-memory.dmp

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memory/744-6-0x0000000002050000-0x0000000002051000-memory.dmp

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memory/744-7-0x0000000000400000-0x000000000045B000-memory.dmp

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memory/1376-1-0x0000000010000000-0x0000000010032000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads