4a092e690c03d7c31d39142fe2e44a08f4cd2b52a38a8a6efabec85f0455cb56

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
06/09/2024, 13:52

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General

Target

avz4thebat/avz_thebat.dll
Size

359KB
MD5

ecc1abf2e7b8ea3545fad40fc001ffd9
SHA1

faede9569790d68a3363b07f123abad0b187b205
SHA256

959b2753812f57886a34d54120ba86141a0ded504176340ced50e7c3960a7009
SHA512

1066ee6c8cf29c7cad7dbf9f9a39c6a33b00d5c03e9aad319dfa2d6cae5a4253e6e733746f1427015a3f4a56edc3752d0f4ea7ec26e2ca32aeb5e1426ef27196
SSDEEP

6144:fmZtc5I+va4fSheXA/RXWAoBdEgc/OxEkcLSZxSV8BKEI310lO3GNh/Lk2m50GIU:fmZ4bfAeQlloYgc2ikiLqQEI3G4GzQjo

Score

7^/10

discovery upx

Malware Config

Signatures

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2168-0-0x0000000000A90000-0x0000000000BBD000-memory.dmp	upx
behavioral1/memory/2168-1-0x0000000000A90000-0x0000000000BBD000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 1 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

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 2168	1900	rundll32.exe	30
PID 1900 wrote to memory of 2168	1900	rundll32.exe	30
PID 1900 wrote to memory of 2168	1900	rundll32.exe	30
PID 1900 wrote to memory of 2168	1900	rundll32.exe	30
PID 1900 wrote to memory of 2168	1900	rundll32.exe	30
PID 1900 wrote to memory of 2168	1900	rundll32.exe	30
PID 1900 wrote to memory of 2168	1900	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\avz4thebat\avz_thebat.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\avz4thebat\avz_thebat.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2168

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

memory/2168-0-0x0000000000A90000-0x0000000000BBD000-memory.dmp

Filesize
1.2MB

Download
memory/2168-1-0x0000000000A90000-0x0000000000BBD000-memory.dmp

Filesize
1.2MB

Download
memory/2168-2-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download