eac0e02e03151eaf9940a958be62651ead42186cce55f0237e7563f3825b99ca

Analysis

max time kernel
92s
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
19-11-2024 20:50

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General

Target

eac0e02e03151eaf9940a958be62651ead42186cce55f0237e7563f3825b99caN.dll
Size

1.7MB
MD5

cfbac8afd00384dc7d102e1ff25aa560
SHA1

f572d6c298f2ac4bca204405a697bdd4002ce969
SHA256

eac0e02e03151eaf9940a958be62651ead42186cce55f0237e7563f3825b99ca
SHA512

6145db7f9fd79c3f220a5bae3666f66ae05f397c84c83f93c35daccbdbe509e9c3cd88fda8fbe3e6008cf7ac452b18f7829883a7e42b2c2528a1cec8bf68caf6
SSDEEP

49152:0i6dS8Mj8NZMtBaw9zOmKgvp0UqopXrjarE/PUWMmPuu/mPG6n+4QvSBb:SS8MQMtBaw9SmKgvp0UqoBmrE/PUgj/4

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1076	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/0x000d000000023b5c-2.dat	upx
behavioral2/memory/1076-4-0x0000000000400000-0x0000000000469000-memory.dmp	upx
behavioral2/memory/1076-8-0x0000000000400000-0x0000000000469000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4848	736	WerFault.exe	83
2444	1076	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	rundll32mgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1288 wrote to memory of 736	1288	rundll32.exe	83
PID 1288 wrote to memory of 736	1288	rundll32.exe	83
PID 1288 wrote to memory of 736	1288	rundll32.exe	83
PID 736 wrote to memory of 1076	736	rundll32.exe	84
PID 736 wrote to memory of 1076	736	rundll32.exe	84
PID 736 wrote to memory of 1076	736	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\eac0e02e03151eaf9940a958be62651ead42186cce55f0237e7563f3825b99caN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\eac0e02e03151eaf9940a958be62651ead42186cce55f0237e7563f3825b99caN.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:736
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1076
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1076 -s 264
      4⤵
      Program crash
      PID:2444
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 680
    3⤵
    - Program crash
    PID:4848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 736 -ip 736
1⤵
PID:4596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1076 -ip 1076
1⤵
PID:4824

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
182KB

MD5
dd49909ad6ea1964c51570dc8e0509d0

SHA1
8b0b696306389efe29328520f7982ccbf8aa02ba

SHA256
1ba4e1899aee0c9f3b3298984afd793bb7a8b838fd7d56f4f9584a285354f1c2

SHA512
86b8043cd378ba8f1d42f170330df08fc31980c400149b1e624a1d2e6928e6248ce805213b993662b8f99a9480ab07a2c4d077002f48a79709e3d21c3ad1ca76

Download Submit
memory/736-3-0x0000000075320000-0x00000000754E3000-memory.dmp

Filesize
1.8MB

Download
memory/736-9-0x0000000075320000-0x00000000754E3000-memory.dmp

Filesize
1.8MB

Download
memory/1076-4-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/1076-6-0x0000000000580000-0x0000000000581000-memory.dmp

Filesize
4KB

Download
memory/1076-8-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download