8348f852775f70444139d4f2cf42fb6fedca972ff91c48eaed56739c840a75d4

Analysis

max time kernel
112s
max time network
20s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
25/07/2024, 11:31

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General

Target

zlib1.dll
Size

69KB
MD5

f5b8b7054675d6aaf4ce3e727395f402
SHA1

3045634965ca1b0d5f31a863ab1c34405f20ec03
SHA256

87ba7862b61b0ee592fb967d38dfd7636d361199788ab8557344251006a134b1
SHA512

b19efcdc5decf4643f6abc4d5da7a505affd083abd496f7e860e5cfceb32a99f17a2f62cfd08686140453db0cc56cb24d1d5ef88bf6f37dd021216b8c0944b3e
SSDEEP

1536:1nToIfXVguoBaNn4iQyqVInsCyIOsb3IO0MCVralp+Cv:dTBfXVZosLQyeQLQs18VralpBv

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2912	2472	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 828 wrote to memory of 2472	828	rundll32.exe	30
PID 828 wrote to memory of 2472	828	rundll32.exe	30
PID 828 wrote to memory of 2472	828	rundll32.exe	30
PID 828 wrote to memory of 2472	828	rundll32.exe	30
PID 828 wrote to memory of 2472	828	rundll32.exe	30
PID 828 wrote to memory of 2472	828	rundll32.exe	30
PID 828 wrote to memory of 2472	828	rundll32.exe	30
PID 2472 wrote to memory of 2912	2472	rundll32.exe	31
PID 2472 wrote to memory of 2912	2472	rundll32.exe	31
PID 2472 wrote to memory of 2912	2472	rundll32.exe	31
PID 2472 wrote to memory of 2912	2472	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zlib1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:828
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\zlib1.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2472
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2472 -s 228
    3⤵
    - Program crash
    PID:2912

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

memory/2472-0-0x0000000061B80000-0x0000000061B96000-memory.dmp

Filesize
88KB

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