0272fbcb430a32973c9b43adef8a984121541b1e963da32ddbaad01c170497fa

Analysis

max time kernel
151s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17/01/2024, 19:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

6367ebfc9ce97b12264f49185730bf44.dll
Size

33KB
MD5

6367ebfc9ce97b12264f49185730bf44
SHA1

4f858a6f94fc901e897530c28b976c58e1c6f4a8
SHA256

0272fbcb430a32973c9b43adef8a984121541b1e963da32ddbaad01c170497fa
SHA512

61124013e54d7b79f3d3df6aca390277ea26eaf24133baf0bdcbd91168f4ba1620b4de1effe2ff5e555ef4a67fad42e07dad62092a890bcbcf7175c6df277ad4
SSDEEP

768:DAbjlayypvTtnQKEbJj05U/R+pNqgmAb2RZvy8hsNda:DAtaywSJo5cSNqgOvy8hsu

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
1112	rundll32.exe
1112	rundll32.exe
2156	rundll32.exe

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\geBrqomm.dll,#1"	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\geBrqomm.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\geBrqomm.dll	rundll32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{38CD130B-0862-4883-A9E9-4FB3C33F2022}\InprocServer32\ = "C:\\Windows\\SysWow64\\geBrqomm.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{38CD130B-0862-4883-A9E9-4FB3C33F2022}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{38CD130B-0862-4883-A9E9-4FB3C33F2022}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{38CD130B-0862-4883-A9E9-4FB3C33F2022}\InprocServer32	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1112	rundll32.exe
1112	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1112	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1112	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1112	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 1112	1116	rundll32.exe	48
PID 1116 wrote to memory of 1112	1116	rundll32.exe	48
PID 1116 wrote to memory of 1112	1116	rundll32.exe	48
PID 1112 wrote to memory of 604	1112	rundll32.exe	6
PID 1112 wrote to memory of 2156	1112	rundll32.exe	97
PID 1112 wrote to memory of 2156	1112	rundll32.exe	97
PID 1112 wrote to memory of 2156	1112	rundll32.exe	97

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:604

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6367ebfc9ce97b12264f49185730bf44.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\6367ebfc9ce97b12264f49185730bf44.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1112
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\geBrqomm.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:2156

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\geBrqomm.dll

Filesize
33KB

MD5
6367ebfc9ce97b12264f49185730bf44

SHA1
4f858a6f94fc901e897530c28b976c58e1c6f4a8

SHA256
0272fbcb430a32973c9b43adef8a984121541b1e963da32ddbaad01c170497fa

SHA512
61124013e54d7b79f3d3df6aca390277ea26eaf24133baf0bdcbd91168f4ba1620b4de1effe2ff5e555ef4a67fad42e07dad62092a890bcbcf7175c6df277ad4

Download Submit
memory/1112-0-0x0000000000B80000-0x0000000000B85000-memory.dmp

Filesize
20KB

Download
memory/1112-1-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/1112-8-0x0000000000BE0000-0x0000000000BE5000-memory.dmp

Filesize
20KB

Download
memory/1112-9-0x0000000000BD0000-0x0000000000BE0000-memory.dmp

Filesize
64KB

Download
memory/1112-14-0x0000000000B80000-0x0000000000B85000-memory.dmp

Filesize
20KB

Download
memory/2156-19-0x0000000000720000-0x0000000000725000-memory.dmp

Filesize
20KB

Download
memory/2156-20-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/2156-21-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/2156-22-0x0000000000720000-0x0000000000725000-memory.dmp

Filesize
20KB

Download