3e84365f940e104ccd43d1ad7f5955c7f0b7a73e9e52c86ed91ef7666034db04

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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
2252	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
2872	ipconfig.exe
2392	NETSTAT.EXE

Runs net.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2252	tasklist.exe
Token: SeDebugPrivilege	2392	NETSTAT.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2992	cb99b97464bc521a09aaf995875e6d6b.exe
2992	cb99b97464bc521a09aaf995875e6d6b.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 1628	2992	cb99b97464bc521a09aaf995875e6d6b.exe	28
PID 2992 wrote to memory of 1628	2992	cb99b97464bc521a09aaf995875e6d6b.exe	28
PID 2992 wrote to memory of 1628	2992	cb99b97464bc521a09aaf995875e6d6b.exe	28
PID 2992 wrote to memory of 1628	2992	cb99b97464bc521a09aaf995875e6d6b.exe	28
PID 1628 wrote to memory of 2564	1628	cmd.exe	30
PID 1628 wrote to memory of 2564	1628	cmd.exe	30
PID 1628 wrote to memory of 2564	1628	cmd.exe	30
PID 1628 wrote to memory of 2564	1628	cmd.exe	30
PID 1628 wrote to memory of 2872	1628	cmd.exe	31
PID 1628 wrote to memory of 2872	1628	cmd.exe	31
PID 1628 wrote to memory of 2872	1628	cmd.exe	31
PID 1628 wrote to memory of 2872	1628	cmd.exe	31
PID 1628 wrote to memory of 2252	1628	cmd.exe	32
PID 1628 wrote to memory of 2252	1628	cmd.exe	32
PID 1628 wrote to memory of 2252	1628	cmd.exe	32
PID 1628 wrote to memory of 2252	1628	cmd.exe	32
PID 1628 wrote to memory of 2648	1628	cmd.exe	34
PID 1628 wrote to memory of 2648	1628	cmd.exe	34
PID 1628 wrote to memory of 2648	1628	cmd.exe	34
PID 1628 wrote to memory of 2648	1628	cmd.exe	34
PID 2648 wrote to memory of 2632	2648	net.exe	35
PID 2648 wrote to memory of 2632	2648	net.exe	35
PID 2648 wrote to memory of 2632	2648	net.exe	35
PID 2648 wrote to memory of 2632	2648	net.exe	35
PID 1628 wrote to memory of 2392	1628	cmd.exe	36
PID 1628 wrote to memory of 2392	1628	cmd.exe	36
PID 1628 wrote to memory of 2392	1628	cmd.exe	36
PID 1628 wrote to memory of 2392	1628	cmd.exe	36

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:2992
- 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:1628
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c set
    3⤵
    PID:2564
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:2872
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:2252
- - C:\Windows\SysWOW64\net.exe
    net start
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2648
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 start
      4⤵
      PID:2632
- - C:\Windows\SysWOW64\NETSTAT.EXE
    netstat -an
    3⤵
    - Gathers network information
    - Suspicious use of AdjustPrivilegeToken
    PID:2392

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
68a30a6a17bbc4bdd75379b8925775ad

SHA1
799995acb5ddcecf84f1c78aebfbe0921e3ab867

SHA256
577551ca7a1971d733cc3f8c7500e41f5b9f49d2293ea83da2b37c99ae93bda9

SHA512
2307095973745f6b05860295f32bfd96a0692b2c2702d50ed9a8f0c0c963f9e1c871dac39a8086bcbafa14085b757a600f56e634ebaad2a6620f43b16fa31d3e

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads