3e84365f940e104ccd43d1ad7f5955c7f0b7a73e9e52c86ed91ef7666034db04

Analysis

max time kernel
94s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 14:06

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General

Target

cb99b97464bc521a09aaf995875e6d6b.exe
Size

24KB
MD5

cb99b97464bc521a09aaf995875e6d6b
SHA1

e2ebbc32a8a257cddfe92054132becb6d40815bb
SHA256

3e84365f940e104ccd43d1ad7f5955c7f0b7a73e9e52c86ed91ef7666034db04
SHA512

86aa385da1b5234071d0119b1d34f4aa3686d75f76bad312f9c6e573a3e5cf784210d77062fc485c8215ff06458a3399e861d17bcfb7072f77c5a95ffc9ccda1
SSDEEP

384:E3eVES+/xwGkRKJ/olM61qmTTMVF9/q5qDG0:bGS+ZfbJ/oO8qYoAGv

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"	cb99b97464bc521a09aaf995875e6d6b.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	cb99b97464bc521a09aaf995875e6d6b.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
2852	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
4180	NETSTAT.EXE
2704	ipconfig.exe

Runs net.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2852	tasklist.exe
Token: SeDebugPrivilege	4180	NETSTAT.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3572	cb99b97464bc521a09aaf995875e6d6b.exe
3572	cb99b97464bc521a09aaf995875e6d6b.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3572 wrote to memory of 1680	3572	cb99b97464bc521a09aaf995875e6d6b.exe	85
PID 3572 wrote to memory of 1680	3572	cb99b97464bc521a09aaf995875e6d6b.exe	85
PID 3572 wrote to memory of 1680	3572	cb99b97464bc521a09aaf995875e6d6b.exe	85
PID 1680 wrote to memory of 3704	1680	cmd.exe	87
PID 1680 wrote to memory of 3704	1680	cmd.exe	87
PID 1680 wrote to memory of 3704	1680	cmd.exe	87
PID 1680 wrote to memory of 2704	1680	cmd.exe	88
PID 1680 wrote to memory of 2704	1680	cmd.exe	88
PID 1680 wrote to memory of 2704	1680	cmd.exe	88
PID 1680 wrote to memory of 2852	1680	cmd.exe	89
PID 1680 wrote to memory of 2852	1680	cmd.exe	89
PID 1680 wrote to memory of 2852	1680	cmd.exe	89
PID 1680 wrote to memory of 4112	1680	cmd.exe	91
PID 1680 wrote to memory of 4112	1680	cmd.exe	91
PID 1680 wrote to memory of 4112	1680	cmd.exe	91
PID 4112 wrote to memory of 4712	4112	net.exe	92
PID 4112 wrote to memory of 4712	4112	net.exe	92
PID 4112 wrote to memory of 4712	4112	net.exe	92
PID 1680 wrote to memory of 4180	1680	cmd.exe	93
PID 1680 wrote to memory of 4180	1680	cmd.exe	93
PID 1680 wrote to memory of 4180	1680	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\cb99b97464bc521a09aaf995875e6d6b.exe
"C:\Users\Admin\AppData\Local\Temp\cb99b97464bc521a09aaf995875e6d6b.exe"
1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3572
- 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:1680
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c set
    3⤵
    PID:3704
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:2704
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:2852
- - C:\Windows\SysWOW64\net.exe
    net start
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4112
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 start
      4⤵
      PID:4712
- - C:\Windows\SysWOW64\NETSTAT.EXE
    netstat -an
    3⤵
    - Gathers network information
    - Suspicious use of AdjustPrivilegeToken
    PID:4180

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
14KB

MD5
52e054f1aa7b63b3992b7224e637a592

SHA1
375fd2f9cd081db34929876806627b0d6f075144

SHA256
b32194a6814ed02790c71addacc72b55a994b07c85f07e01ac15688e78f0d9a9

SHA512
600f215434d2195810efb14080d7fe6838f39c361380d8fe786b0d8499c3caa8c5a8e6a84c3e8760aff36e51b0271579acdd541e92806b9fa5755b71e0280021

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads