b4d38ca8d15ea651ac5e1a5de5d81c4e2edc54845d6ae7a7beb03a243c3965f6

Analysis

max time kernel
15s
max time network
16s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
27/01/2025, 14:55

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General

Target
$TEMP/XL7InstallUI/msvcr71.dll
Size 340KB
Sample250127-sapdbavjdr
SHA256 c4d4339df314a27ff75a38967b7569d9962337b8d4cd4b0db3aba5ff72b2bfbb
MD5 ca2f560921b7b8be1cf555a5a18d54c3
SHA1 432dbcf54b6f1142058b413a9d52668a2bde011d
SHA512 23e0bdd9458a5a8e0f9bbcb7f6ce4f87fcc9e47c1ee15f964c17ff9fe8d0f82dd3a0f90263daaf1ee87fad4a238aa0ee92a16b3e2c67f47c84d575768edba43e
SSDEEP 6144:cPlV59g81QWguohIP/siMbo8Crn2zzwRFMciFMNrb3YgxS3bCAO5kkG:OlVvN1QWguohInJDrn8zwNF7eCr
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1132	1796	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 2628 wrote to memory of 1796	2628	rundll32.exe	30
PID 2628 wrote to memory of 1796	2628	rundll32.exe	30
PID 2628 wrote to memory of 1796	2628	rundll32.exe	30
PID 2628 wrote to memory of 1796	2628	rundll32.exe	30
PID 2628 wrote to memory of 1796	2628	rundll32.exe	30
PID 2628 wrote to memory of 1796	2628	rundll32.exe	30
PID 2628 wrote to memory of 1796	2628	rundll32.exe	30
PID 1796 wrote to memory of 1132	1796	rundll32.exe	31
PID 1796 wrote to memory of 1132	1796	rundll32.exe	31
PID 1796 wrote to memory of 1132	1796	rundll32.exe	31
PID 1796 wrote to memory of 1132	1796	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$TEMP\XL7InstallUI\msvcr71.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$TEMP\XL7InstallUI\msvcr71.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1796
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1796 -s 224
    3⤵
    - Program crash
    PID:1132

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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