243c128b0479263d68e1e9b7f3a5e848405ca1c0c4b162defee8b5be9086bda8

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-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
2136	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
2372	ipconfig.exe
2608	NETSTAT.EXE

Runs net.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2136	tasklist.exe
Token: SeDebugPrivilege	2608	NETSTAT.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2416	b9a5724f48bd73aa2ff44d55a528b36b.exe
2416	b9a5724f48bd73aa2ff44d55a528b36b.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2416 wrote to memory of 2732	2416	b9a5724f48bd73aa2ff44d55a528b36b.exe	28
PID 2416 wrote to memory of 2732	2416	b9a5724f48bd73aa2ff44d55a528b36b.exe	28
PID 2416 wrote to memory of 2732	2416	b9a5724f48bd73aa2ff44d55a528b36b.exe	28
PID 2416 wrote to memory of 2732	2416	b9a5724f48bd73aa2ff44d55a528b36b.exe	28
PID 2732 wrote to memory of 1856	2732	cmd.exe	30
PID 2732 wrote to memory of 1856	2732	cmd.exe	30
PID 2732 wrote to memory of 1856	2732	cmd.exe	30
PID 2732 wrote to memory of 1856	2732	cmd.exe	30
PID 2732 wrote to memory of 2372	2732	cmd.exe	31
PID 2732 wrote to memory of 2372	2732	cmd.exe	31
PID 2732 wrote to memory of 2372	2732	cmd.exe	31
PID 2732 wrote to memory of 2372	2732	cmd.exe	31
PID 2732 wrote to memory of 2136	2732	cmd.exe	32
PID 2732 wrote to memory of 2136	2732	cmd.exe	32
PID 2732 wrote to memory of 2136	2732	cmd.exe	32
PID 2732 wrote to memory of 2136	2732	cmd.exe	32
PID 2732 wrote to memory of 2676	2732	cmd.exe	34
PID 2732 wrote to memory of 2676	2732	cmd.exe	34
PID 2732 wrote to memory of 2676	2732	cmd.exe	34
PID 2732 wrote to memory of 2676	2732	cmd.exe	34
PID 2676 wrote to memory of 2716	2676	net.exe	35
PID 2676 wrote to memory of 2716	2676	net.exe	35
PID 2676 wrote to memory of 2716	2676	net.exe	35
PID 2676 wrote to memory of 2716	2676	net.exe	35
PID 2732 wrote to memory of 2608	2732	cmd.exe	36
PID 2732 wrote to memory of 2608	2732	cmd.exe	36
PID 2732 wrote to memory of 2608	2732	cmd.exe	36
PID 2732 wrote to memory of 2608	2732	cmd.exe	36

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:2416
- 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:2732
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c set
    3⤵
    PID:1856
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:2372
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:2136
- - C:\Windows\SysWOW64\net.exe
    net start
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2676
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 start
      4⤵
      PID:2716
- - C:\Windows\SysWOW64\NETSTAT.EXE
    netstat -an
    3⤵
    - Gathers network information
    - Suspicious use of AdjustPrivilegeToken
    PID:2608

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
8KB

MD5
b48801e800393fc595a9e2ea0612c418

SHA1
1683b97b5cf6ce842c7a838086085a84e864582a

SHA256
cbeb038fdf27850e46a2eea8342d8efac558438f5d529ab616dd074ac64e2460

SHA512
8129f4c0a41c94aaf03d430a70449ae655d7d6d3a331428935e67f42ec98da530109b04263fe128cd9fa011fa96acef4d7121b379a132cdaffdd7284c69b8cf8

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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