1d6300fb759d3e44fc515c37bce65201e9d3d7430a7c7a65651162dd1f69f60c

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/11/2024, 16:22

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General

Target

$SYSDIR/cmbr15.dll
Size

1.8MB
MD5

caa08517145c0f1b219ca063cbf7c0fb
SHA1

a1433fd8685af252ea9027b5026f59d0968d5c78
SHA256

e4b0f165442508db477e3bfc25de6933c6e1a77d3ae0d37e9990d1681d691881
SHA512

31c1b2c2122aed39c73741844f57beedd2c16d7728cccd7ccc6240d062ecab0b31a038e6ce6f489a1e3b6da32fd13e34a6f6b6fde677dea89b8d4d63f6074bce
SSDEEP

49152:hk4494Kvi2fYIHzdlTHMaQyH/c/aBr/afwOg:G4U4si2gczdiaQyH/c/aBr/afwOg

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2420	2380	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 SetWindowsHookEx 4 IoCs

pid	Process
2380	rundll32.exe
2380	rundll32.exe
2380	rundll32.exe
2380	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2380	2488	rundll32.exe	30
PID 2488 wrote to memory of 2380	2488	rundll32.exe	30
PID 2488 wrote to memory of 2380	2488	rundll32.exe	30
PID 2488 wrote to memory of 2380	2488	rundll32.exe	30
PID 2488 wrote to memory of 2380	2488	rundll32.exe	30
PID 2488 wrote to memory of 2380	2488	rundll32.exe	30
PID 2488 wrote to memory of 2380	2488	rundll32.exe	30
PID 2380 wrote to memory of 2420	2380	rundll32.exe	31
PID 2380 wrote to memory of 2420	2380	rundll32.exe	31
PID 2380 wrote to memory of 2420	2380	rundll32.exe	31
PID 2380 wrote to memory of 2420	2380	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$SYSDIR\cmbr15.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$SYSDIR\cmbr15.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2380
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2380 -s 448
    3⤵
    - Program crash
    PID:2420

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

Windows 7 deprecation

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