5ea84f8f933017eb51519e628002909ba5dcf81a34830147ff2368a9d430496d

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
23/08/2024, 15:30

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General

Target

$WINDIR/system32/zlib1.dll
Size

64KB
MD5

662a41b2f7b88a055a66b106ab69a568
SHA1

b1e3470652549d448bac31881cbaf0e2257c572b
SHA256

e3d94cab4ccd3d6feae0efce0bd2ac5da1db09bc87a9e6ababde4d07571fb437
SHA512

698f6b634f8adcab60e3a1223ec3520d0b65e0b93f677872f5cb5bd231d41591cba80e45cb229d662ab9268b9429b49463c27308070a95202fafcd3838cdace6
SSDEEP

1536:iUBBsDArYynUtNTD1onToIftIOjIOG0T0CqaF:iLDzeUtNTD1MTBfnFGy0ZaF

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1312	3036	WerFault.exe	30

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 11 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 3036	3016	rundll32.exe	30
PID 3016 wrote to memory of 3036	3016	rundll32.exe	30
PID 3016 wrote to memory of 3036	3016	rundll32.exe	30
PID 3016 wrote to memory of 3036	3016	rundll32.exe	30
PID 3016 wrote to memory of 3036	3016	rundll32.exe	30
PID 3016 wrote to memory of 3036	3016	rundll32.exe	30
PID 3016 wrote to memory of 3036	3016	rundll32.exe	30
PID 3036 wrote to memory of 1312	3036	rundll32.exe	31
PID 3036 wrote to memory of 1312	3036	rundll32.exe	31
PID 3036 wrote to memory of 1312	3036	rundll32.exe	31
PID 3036 wrote to memory of 1312	3036	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$WINDIR\system32\zlib1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$WINDIR\system32\zlib1.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3036
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 224
    3⤵
    - Program crash
    PID:1312

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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