a98f71032d1ac1e5a21e21b111f4532aa57cc887d9df42c0fc8842d6837cb0a6

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-11-2024 22:35

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General

Target

a98f71032d1ac1e5a21e21b111f4532aa57cc887d9df42c0fc8842d6837cb0a6.dll
Size

170KB
MD5

38462b7b4f6bbeee22be0fe068ca0a47
SHA1

0f02bd6702e69abf775d191dd99593aac935af64
SHA256

a98f71032d1ac1e5a21e21b111f4532aa57cc887d9df42c0fc8842d6837cb0a6
SHA512

a46223247d843fea3f9170e5f4e6f67bd36c40db5b68b2efe138bd43821265001bf33c1281cdba6213d8e67e85a9c8775d1a85dc99f925087dd1065811fb5936
SSDEEP

3072:bcwO/iTOdgWtJ6LTHn/rkiENpYrvQaSISixCC/xwp2rrUDL:bDTOdgWtYDjkR/YrvQaSrcwptDL

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

rundll32mgr.exe

pid	Process
1248	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/files/0x000b000000023ba6-4.dat	upx
behavioral2/memory/1248-8-0x0000000000400000-0x0000000000477000-memory.dmp	upx

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	Process	procid_target
3868	1248	WerFault.exe	86
412	4620	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

Processes:

rundll32mgr.exerundll32.exe

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 AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description	pid	Process
Token: SeDebugPrivilege	4620	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	Process	procid_target
PID 3960 wrote to memory of 4620	3960	rundll32.exe	85
PID 3960 wrote to memory of 4620	3960	rundll32.exe	85
PID 3960 wrote to memory of 4620	3960	rundll32.exe	85
PID 4620 wrote to memory of 1248	4620	rundll32.exe	86
PID 4620 wrote to memory of 1248	4620	rundll32.exe	86
PID 4620 wrote to memory of 1248	4620	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a98f71032d1ac1e5a21e21b111f4532aa57cc887d9df42c0fc8842d6837cb0a6.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3960
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a98f71032d1ac1e5a21e21b111f4532aa57cc887d9df42c0fc8842d6837cb0a6.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4620
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1248
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1248 -s 264
      4⤵
      Program crash
      PID:3868
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4620 -s 620
    3⤵
    - Program crash
    PID:412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1248 -ip 1248
1⤵
PID:4776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4620 -ip 4620
1⤵
PID:3568

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
134KB

MD5
774b9c11bcc0dbf50425e3935100b905

SHA1
519338139ca0deaa4b42e056468087e18fd1f253

SHA256
be6cab2cfd23bd5cd633264eb9a7d55f0feacda3aff05db031af04a531585590

SHA512
6d9a570b441f96013bc5ae2bdc6422beb0f48c3953da00e2443e94de531f8abda9ad8403380543f95e0ac16d84985e1a5829556ff7bf26fca85afbc86fc07872

Download Submit
memory/1248-10-0x00000000004C0000-0x00000000004C1000-memory.dmp

Filesize
4KB

Download
memory/1248-8-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/4620-0-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/4620-9-0x00000000772D2000-0x00000000772D3000-memory.dmp

Filesize
4KB

Download
memory/4620-7-0x0000000003FE0000-0x0000000003FE1000-memory.dmp

Filesize
4KB

Download
memory/4620-6-0x0000000003FD0000-0x0000000003FD1000-memory.dmp

Filesize
4KB

Download
memory/4620-5-0x0000000003EC0000-0x0000000003EC1000-memory.dmp

Filesize
4KB

Download
memory/4620-12-0x00000000772D2000-0x00000000772D3000-memory.dmp

Filesize
4KB

Download
memory/4620-13-0x00000000772D2000-0x00000000772D3000-memory.dmp

Filesize
4KB

Download