9fc34391c2206ff633a7022f9d9627af1fb1a0428545e8c48934be117edd51dc

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
21/08/2024, 10:32

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General

Target

2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe
Size

3.4MB
MD5

6a538fa9df7f721f9889396440c7fbf5
SHA1

5bebf117391bddacd2db9667f733b76975ccd1f6
SHA256

9fc34391c2206ff633a7022f9d9627af1fb1a0428545e8c48934be117edd51dc
SHA512

332c9cb4bb899d9e5a93dcbc11f8265e2afd70ed31215254e8ff3288b7f45c47bb512c487e889a1d1c1a34583db2221631b2ff296ea4a1c89ba78f72111c8002
SSDEEP

12288:/JHST4vI4mVMvt6fDVCw+Bfstl8gFNG2VPxNek40EApn7JFHg1:/JCVu00stSyg2VbEApn/Hg

Score

6^/10

discovery persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\Serverx = "C:\\Windows\\system32\\Serverx.exe"	2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Serverx.exe	2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe
File opened for modification	C:\Windows\SysWOW64\Serverx.exe	2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 2304	2176	2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe	30
PID 2176 wrote to memory of 2304	2176	2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe	30
PID 2176 wrote to memory of 2304	2176	2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe	30
PID 2176 wrote to memory of 2304	2176	2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe	30
PID 2176 wrote to memory of 1208	2176	2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe	21
PID 2176 wrote to memory of 1208	2176	2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe	21

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1208
- C:\Users\Admin\AppData\Local\Temp\2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe
  "C:\Users\Admin\AppData\Local\Temp\2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe"
  2⤵
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2176
- - C:\Users\Admin\AppData\Local\Temp\2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-08-21_6a538fa9df7f721f9889396440c7fbf5_bkransomware_virut.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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/1208-2-0x0000000002DD0000-0x0000000002DD1000-memory.dmp

Filesize
4KB

Download
memory/1208-1-0x0000000002DD0000-0x0000000002DD1000-memory.dmp

Filesize
4KB

Download
memory/2176-3-0x0000000000F50000-0x00000000012B11C7-memory.dmp

Filesize
3.4MB

Download
memory/2176-5-0x0000000000860000-0x0000000000BC2000-memory.dmp

Filesize
3.4MB

Download
memory/2176-6-0x0000000000F50000-0x00000000012B11C7-memory.dmp

Filesize
3.4MB

Download
memory/2304-4-0x0000000000F50000-0x00000000012B11C7-memory.dmp

Filesize
3.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads