ce75fa27bc67730f94d5503ded4ec7c22c1a72add103cea29ccdc7dc3361f8e8

Analysis

max time kernel
150s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-09-2024 04:53

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General

Target

RivalsExternal.exe
Size

509KB
MD5

7b2f0c8112aa9498c864fccd3a5258d5
SHA1

8b44fccfdf873a69fe3f51cba9b9a7b00f77b4c0
SHA256

ce75fa27bc67730f94d5503ded4ec7c22c1a72add103cea29ccdc7dc3361f8e8
SHA512

5711eb921e865232da2fe242e5ffac42aabb3cbbc6ee6b1799818a7a6bf38b33ff0454bbc63c6eac53bc23826c36ab32a388bf65ca77cf3f6bf4aa7e6d5ed869
SSDEEP

6144:mx22P7Ue3e1fe6VlWT8b9t6+Sb4+t5zWov8blZ7FbNo:mA2TvkfPVle8n6+IvsjNo

Score

10^/10

persistence privilege_escalation

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\System32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\Permwoofer"	RivalsExternal.exe

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\runtime = "C:\\Program Files\\Permwoofer"	RivalsExternal.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Permwoofer	RivalsExternal.exe
File created	C:\Program Files\Permwoofer	RivalsExternal.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\xdwd.dll	RivalsExternal.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2132	schtasks.exe
2864	schtasks.exe
2896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2132	schtasks.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2520	WmiApSrv.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe
2112	RivalsExternal.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2112	RivalsExternal.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2052	2112	RivalsExternal.exe	32
PID 2112 wrote to memory of 2052	2112	RivalsExternal.exe	32
PID 2112 wrote to memory of 2052	2112	RivalsExternal.exe	32
PID 2052 wrote to memory of 2864	2052	CMD.exe	34
PID 2052 wrote to memory of 2864	2052	CMD.exe	34
PID 2052 wrote to memory of 2864	2052	CMD.exe	34
PID 2112 wrote to memory of 2792	2112	RivalsExternal.exe	35
PID 2112 wrote to memory of 2792	2112	RivalsExternal.exe	35
PID 2112 wrote to memory of 2792	2112	RivalsExternal.exe	35
PID 2792 wrote to memory of 2896	2792	CMD.exe	37
PID 2792 wrote to memory of 2896	2792	CMD.exe	37
PID 2792 wrote to memory of 2896	2792	CMD.exe	37
PID 2112 wrote to memory of 2652	2112	RivalsExternal.exe	38
PID 2112 wrote to memory of 2652	2112	RivalsExternal.exe	38
PID 2112 wrote to memory of 2652	2112	RivalsExternal.exe	38
PID 2652 wrote to memory of 2132	2652	CMD.exe	40
PID 2652 wrote to memory of 2132	2652	CMD.exe	40
PID 2652 wrote to memory of 2132	2652	CMD.exe	40

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\RivalsExternal.exe
"C:\Users\Admin\AppData\Local\Temp\RivalsExternal.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\system32\CMD.exe
  "CMD" /C SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "INJECT" /tr "C:\Users\Admin\AppData\Roaming\Permwoofer" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2052
- - C:\Windows\system32\schtasks.exe
    SchTaSKs /CrEAte /F /sc OnLoGoN /rl HighEst /tn "INJECT" /tr "C:\Users\Admin\AppData\Roaming\Permwoofer"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2864
- C:\Windows\system32\CMD.exe
  "CMD" /c SchTaSKs /create /f /sc minute /mo -1 /tn "Permwoofer" /tr "C:\Users\Admin\AppData\Roaming\Permwoofer" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\Windows\system32\schtasks.exe
    SchTaSKs /create /f /sc minute /mo -1 /tn "Permwoofer" /tr "C:\Users\Admin\AppData\Roaming\Permwoofer" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2896
- C:\Windows\system32\CMD.exe
  "CMD" /c SchTaSKs /create /f /sc minute /mo 5 /tn "Permwoofer" /tr "C:\Program Files\Permwoofer" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2652
- - C:\Windows\system32\schtasks.exe
    SchTaSKs /create /f /sc minute /mo 5 /tn "Permwoofer" /tr "C:\Program Files\Permwoofer" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    - Suspicious behavior: EnumeratesProcesses
    PID:2132

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
- Suspicious behavior: EnumeratesProcesses
PID:2520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\xdwd.dll

Filesize
136KB

MD5
16e5a492c9c6ae34c59683be9c51fa31

SHA1
97031b41f5c56f371c28ae0d62a2df7d585adaba

SHA256
35c8d022e1d917f1aabdceae98097ccc072161b302f84c768ca63e4b32ac2b66

SHA512
20fd369172ef5e3e2fde388666b42e8fe5f0c2bfa338c0345f45e98af6561a249ba3ecc48c3f16efcc73f02ecb67b3ddb1e2e8f0e77d18fa00ac34e6379e50b6

Download Submit
memory/2112-0-0x000007FEF56D3000-0x000007FEF56D4000-memory.dmp

Filesize
4KB

Download
memory/2112-1-0x0000000000D10000-0x0000000000D94000-memory.dmp

Filesize
528KB

Download
memory/2112-2-0x000007FEF56D3000-0x000007FEF56D4000-memory.dmp

Filesize
4KB

Download
memory/2112-62-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

Filesize
9.9MB

Download
memory/2112-90-0x0000000000440000-0x000000000044C000-memory.dmp

Filesize
48KB

Download
memory/2112-117-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

Filesize
9.9MB

Download
memory/2132-46-0x000007FEF6AB0000-0x000007FEF6AD2000-memory.dmp

Filesize
136KB

Download
memory/2520-63-0x000007FEEFB40000-0x000007FEEFB62000-memory.dmp

Filesize
136KB

Download