243c128b0479263d68e1e9b7f3a5e848405ca1c0c4b162defee8b5be9086bda8

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2024, 21:00

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General

Target

b9a5724f48bd73aa2ff44d55a528b36b.exe
Size

24KB
MD5

b9a5724f48bd73aa2ff44d55a528b36b
SHA1

90402b1db37b91c22bb73e6a6967c407129bf9aa
SHA256

243c128b0479263d68e1e9b7f3a5e848405ca1c0c4b162defee8b5be9086bda8
SHA512

c97c26021912be360faccc6f4596d0563cf3e9e61e100f4ba992678ad621ee43f70bbd29e4c19910398a01a7b65e5e091f4b3d18d2f8fcf1fb77b47726512b2a
SSDEEP

384:E3eVES+/xwGkRKJQFTvlM61qmTTMVF9/q5y0:bGS+ZfbJQRvO8qYoAT

Score

6^/10

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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Start GeekBuddy = "C:\\Program Files\\Common Files\\Microsoft Shared\\Web Folders\\1033\\spoolsv.exe"	b9a5724f48bd73aa2ff44d55a528b36b.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\Microsoft Shared\Web Folders\1033\spoolsv.exe	b9a5724f48bd73aa2ff44d55a528b36b.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
4852	tasklist.exe

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
4496	ipconfig.exe
2136	NETSTAT.EXE

Runs net.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4852	tasklist.exe
Token: SeDebugPrivilege	2136	NETSTAT.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1548	b9a5724f48bd73aa2ff44d55a528b36b.exe
1548	b9a5724f48bd73aa2ff44d55a528b36b.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 4528	1548	b9a5724f48bd73aa2ff44d55a528b36b.exe	89
PID 1548 wrote to memory of 4528	1548	b9a5724f48bd73aa2ff44d55a528b36b.exe	89
PID 1548 wrote to memory of 4528	1548	b9a5724f48bd73aa2ff44d55a528b36b.exe	89
PID 4528 wrote to memory of 1544	4528	cmd.exe	91
PID 4528 wrote to memory of 1544	4528	cmd.exe	91
PID 4528 wrote to memory of 1544	4528	cmd.exe	91
PID 4528 wrote to memory of 4496	4528	cmd.exe	92
PID 4528 wrote to memory of 4496	4528	cmd.exe	92
PID 4528 wrote to memory of 4496	4528	cmd.exe	92
PID 4528 wrote to memory of 4852	4528	cmd.exe	93
PID 4528 wrote to memory of 4852	4528	cmd.exe	93
PID 4528 wrote to memory of 4852	4528	cmd.exe	93
PID 4528 wrote to memory of 4624	4528	cmd.exe	95
PID 4528 wrote to memory of 4624	4528	cmd.exe	95
PID 4528 wrote to memory of 4624	4528	cmd.exe	95
PID 4624 wrote to memory of 2532	4624	net.exe	96
PID 4624 wrote to memory of 2532	4624	net.exe	96
PID 4624 wrote to memory of 2532	4624	net.exe	96
PID 4528 wrote to memory of 2136	4528	cmd.exe	97
PID 4528 wrote to memory of 2136	4528	cmd.exe	97
PID 4528 wrote to memory of 2136	4528	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\b9a5724f48bd73aa2ff44d55a528b36b.exe
"C:\Users\Admin\AppData\Local\Temp\b9a5724f48bd73aa2ff44d55a528b36b.exe"
1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1548
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ver >c:\windows\temp\flash.log & cmd /c set >>c:\windows\temp\flash.log & ipconfig /all >>c:\windows\temp\flash.log & tasklist >>c:\windows\temp\flash.log & net start>>c:\windows\temp\flash.log & netstat -an >>c:\windows\temp\flash.log
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4528
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c set
    3⤵
    PID:1544
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:4496
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:4852
- - C:\Windows\SysWOW64\net.exe
    net start
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4624
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 start
      4⤵
      PID:2532
- - C:\Windows\SysWOW64\NETSTAT.EXE
    netstat -an
    3⤵
    - Gathers network information
    - Suspicious use of AdjustPrivilegeToken
    PID:2136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

Process Discovery

T1057

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\??\c:\windows\temp\flash.log

Filesize
15KB

MD5
3c0d97568f66c40358f440e5930154c9

SHA1
e4bc09c913b2c01a7a0b219637599ce12985344b

SHA256
57600876b2ca29c909be9b0f7e4c221ab9f1cb1befc3ebb24ee896a1ff2ae221

SHA512
7e2498c48b97614d49bac12807315de50ecf5ea0033bac91566dc6ebdd7c226ce504bf34550e33f5b5b7a0b0b359e21f8c3465ad2e56a92a367c9a7b6204df31

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads