12e1dc4db670697f92719ccc698a787b20b6912ee4a79df72e794ef43c841d6b

Analysis

max time kernel
94s
max time network
95s
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 22:49

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General

Target

12e1dc4db670697f92719ccc698a787b20b6912ee4a79df72e794ef43c841d6bN.dll
Size

136KB
MD5

17a1ee02fc2cff0201adeba2756b3970
SHA1

5aa5efc5cf0c7a8a8133e81b23c00f3e04bcd6a0
SHA256

12e1dc4db670697f92719ccc698a787b20b6912ee4a79df72e794ef43c841d6b
SHA512

fcd9b06e591835ba9be3927522355351ab615f49a97def78c9e953f2978c09b5ff9e9de47f7ce781dc9e929c4ab0f723c85ba656d544b1f45f230cbf284955d0
SSDEEP

1536:1gmf5TfxYPfpoT/7ivK6Fr/E0odbbb2inHetkc5cqvnMg/WpRh70qQ4SDMTTtFVh:1rEnpofGTuXHHetkqcqvnhzdu7

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4568	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/memory/4568-4-0x0000000000400000-0x000000000045B000-memory.dmp	upx
behavioral2/files/0x000c000000023b21-3.dat	upx
behavioral2/memory/4568-7-0x0000000000400000-0x000000000045B000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1168	4568	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 4488 wrote to memory of 4968	4488	rundll32.exe	82
PID 4488 wrote to memory of 4968	4488	rundll32.exe	82
PID 4488 wrote to memory of 4968	4488	rundll32.exe	82
PID 4968 wrote to memory of 4568	4968	rundll32.exe	83
PID 4968 wrote to memory of 4568	4968	rundll32.exe	83
PID 4968 wrote to memory of 4568	4968	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\12e1dc4db670697f92719ccc698a787b20b6912ee4a79df72e794ef43c841d6bN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4488
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\12e1dc4db670697f92719ccc698a787b20b6912ee4a79df72e794ef43c841d6bN.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4968
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4568
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4568 -s 264
      4⤵
      Program crash
      PID:1168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4568 -ip 4568
1⤵
PID:5012

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/4568-4-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/4568-6-0x0000000000580000-0x0000000000581000-memory.dmp

Filesize
4KB

Download
memory/4568-7-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/4968-0-0x0000000010000000-0x0000000010022000-memory.dmp

Filesize
136KB

Download