ebe670d435f8ee1c8a403f5c19d2626aac45c5c31f90e667e04c84b56939c16e

Analysis

max time kernel
93s
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
22-11-2024 21:40

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General

Target

ebe670d435f8ee1c8a403f5c19d2626aac45c5c31f90e667e04c84b56939c16e.dll
Size

171KB
MD5

a3ee0c445adba4b7b5a916b5546924d9
SHA1

623d2fbb3c1e865748a3fa4e4829a8db042542d2
SHA256

ebe670d435f8ee1c8a403f5c19d2626aac45c5c31f90e667e04c84b56939c16e
SHA512

d9143c8a0e2371d98002b448d47f7b25efe5fbbd1311fe6ff07341b5b81f4bfe06bf8810e318515be0903f6d6675c60754e7c4ef0e1cee0e3df9963924fdf000
SSDEEP

3072:bcwO/iTOdgWtJ6LCHn/rkiENpYrvQaSISixCC/xwp2rrUDA:bDTOdgWtYAjkR/YrvQaSrcwptDA

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3760	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/0x000a000000023bb1-3.dat	upx
behavioral2/memory/3760-4-0x0000000000400000-0x0000000000477000-memory.dmp	upx
behavioral2/memory/3760-12-0x0000000000400000-0x0000000000477000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2768	3760	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 AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4248	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 824 wrote to memory of 4248	824	rundll32.exe	83
PID 824 wrote to memory of 4248	824	rundll32.exe	83
PID 824 wrote to memory of 4248	824	rundll32.exe	83
PID 4248 wrote to memory of 3760	4248	rundll32.exe	84
PID 4248 wrote to memory of 3760	4248	rundll32.exe	84
PID 4248 wrote to memory of 3760	4248	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ebe670d435f8ee1c8a403f5c19d2626aac45c5c31f90e667e04c84b56939c16e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:824
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ebe670d435f8ee1c8a403f5c19d2626aac45c5c31f90e667e04c84b56939c16e.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4248
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3760
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3760 -s 264
      4⤵
      Program crash
      PID:2768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3760 -ip 3760
1⤵
PID:3144

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/3760-4-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/3760-10-0x0000000000500000-0x0000000000501000-memory.dmp

Filesize
4KB

Download
memory/3760-12-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/4248-0-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/4248-6-0x0000000001320000-0x0000000001321000-memory.dmp

Filesize
4KB

Download
memory/4248-9-0x0000000077192000-0x0000000077193000-memory.dmp

Filesize
4KB

Download
memory/4248-8-0x0000000001380000-0x0000000001381000-memory.dmp

Filesize
4KB

Download
memory/4248-7-0x0000000001370000-0x0000000001371000-memory.dmp

Filesize
4KB

Download
memory/4248-13-0x0000000077192000-0x0000000077193000-memory.dmp

Filesize
4KB

Download