2b1e8c69cba6382ac3f62dc217810640eaf414830dc30c1862321a0379f091f1

Analysis

max time kernel
151s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/12/2023, 23:21

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General

Target

06c6fa9558585147c13a580261fc9d18.dll
Size

33KB
MD5

06c6fa9558585147c13a580261fc9d18
SHA1

2181bb51dedc730da900318cbab45d37ff9be97d
SHA256

2b1e8c69cba6382ac3f62dc217810640eaf414830dc30c1862321a0379f091f1
SHA512

e88458dbd8f46e199e1f80e2443c8688f0134d28efdc0466b4de6a37d0831e4f59d7afd4bc9d79f91aa85c3c66867fc903d89af2d232cfda7798b5b2c5f8cafd
SSDEEP

384:CsfaKYmTz9Wmn+RDwVXtUAfTvxTP3oxX9BkLyi3BYoyxqFbHqT3CMgIwbKbu:JhNTzsm+SFTZUxtBkp3BYooIu0IdC

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
2736	rundll32.exe
2736	rundll32.exe
1212	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\\rqRIxvTM.dll,#1"	rundll32.exe

Drops file in System32 directory 2 IoCs

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

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A596175D-BBC7-476A-A152-FBA652B64505}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A596175D-BBC7-476A-A152-FBA652B64505}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A596175D-BBC7-476A-A152-FBA652B64505}\InprocServer32\ = "C:\\Windows\\SysWow64\\rqRIxvTM.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A596175D-BBC7-476A-A152-FBA652B64505}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2736	rundll32.exe
2736	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe
1212	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2736	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2736	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2736	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 2736	2868	rundll32.exe	70
PID 2868 wrote to memory of 2736	2868	rundll32.exe	70
PID 2868 wrote to memory of 2736	2868	rundll32.exe	70
PID 2736 wrote to memory of 612	2736	rundll32.exe	4
PID 2736 wrote to memory of 1212	2736	rundll32.exe	100
PID 2736 wrote to memory of 1212	2736	rundll32.exe	100
PID 2736 wrote to memory of 1212	2736	rundll32.exe	100

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:612

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\06c6fa9558585147c13a580261fc9d18.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\06c6fa9558585147c13a580261fc9d18.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:2736
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\rqRIxvTM.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:1212

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

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Downloads

C:\Windows\SysWOW64\rqRIxvTM.dll

Filesize
33KB

MD5
06c6fa9558585147c13a580261fc9d18

SHA1
2181bb51dedc730da900318cbab45d37ff9be97d

SHA256
2b1e8c69cba6382ac3f62dc217810640eaf414830dc30c1862321a0379f091f1

SHA512
e88458dbd8f46e199e1f80e2443c8688f0134d28efdc0466b4de6a37d0831e4f59d7afd4bc9d79f91aa85c3c66867fc903d89af2d232cfda7798b5b2c5f8cafd

Download Submit
memory/1212-18-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/1212-19-0x0000000001410000-0x0000000001415000-memory.dmp

Filesize
20KB

Download
memory/1212-20-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/2736-0-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/2736-1-0x0000000000510000-0x0000000000515000-memory.dmp

Filesize
20KB

Download
memory/2736-8-0x0000000000A40000-0x0000000000A50000-memory.dmp

Filesize
64KB

Download
memory/2736-9-0x0000000000A50000-0x0000000000A55000-memory.dmp

Filesize
20KB

Download
memory/2736-10-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/2736-14-0x0000000000510000-0x0000000000515000-memory.dmp

Filesize
20KB

Download