glupteba | f647bff60a531c047f570244d7863798b8762fce20a3b57b2db3c77ef63d6993

Analysis

max time kernel
4s
max time network
144s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
26/04/2024, 12:30

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General

Target
f647bff60a531c047f570244d7863798b8762fce20a3b57b2db3c77ef63d6993.exe
Size 4.2MB
Sample240426-ppvl4acd51
SHA256 f647bff60a531c047f570244d7863798b8762fce20a3b57b2db3c77ef63d6993
MD5 6e391ede00e261ce04ec981d1bec956c
SHA1 fabf4cca23a8ed65ff29b08fce74ed79ce1b9452
SHA512 b7515bdb46a4ba0ecb6fa2b65e0d5992355562367c79282d6efd6cfa4a60ad7f723f53c5d52e01836ddc1ce40bc6c868e548eeb710eb60bdc57a6c1aed0bde61
SSDEEP 98304:+oYeyy8kHe78wPlePBdIBkk7XHCPR9lUiyPcb7obt3hLJPXf:9Yed8id2le5CV69lULPddf
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

glupteba dropper evasion loader upx

Malware Config

Signatures

Glupteba
Glupteba is a modular loader written in Golang with various components.
loader dropper glupteba

Glupteba payload 18 IoCs

resource	yara_rule
behavioral2/memory/792-2-0x0000000006690000-0x0000000006F7B000-memory.dmp	family_glupteba
behavioral2/memory/792-3-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/792-140-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/1256-187-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/792-194-0x0000000006690000-0x0000000006F7B000-memory.dmp	family_glupteba
behavioral2/memory/4296-196-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-207-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-211-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-215-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-219-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-223-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-227-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-231-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-235-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-239-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-243-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-247-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba
behavioral2/memory/4296-251-0x0000000000400000-0x000000000441F000-memory.dmp	family_glupteba

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4652	netsh.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000200000002aa32-199.dat	upx
behavioral2/memory/3048-201-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/3048-204-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2544-203-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2544-209-0x0000000000400000-0x00000000008DF000-memory.dmp	upx
behavioral2/memory/2544-217-0x0000000000400000-0x00000000008DF000-memory.dmp	upx

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2264	sc.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
3536	schtasks.exe
3868	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4108	powershell.exe
4108	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4108	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 792 wrote to memory of 4108	792	f647bff60a531c047f570244d7863798b8762fce20a3b57b2db3c77ef63d6993.exe	81
PID 792 wrote to memory of 4108	792	f647bff60a531c047f570244d7863798b8762fce20a3b57b2db3c77ef63d6993.exe	81
PID 792 wrote to memory of 4108	792	f647bff60a531c047f570244d7863798b8762fce20a3b57b2db3c77ef63d6993.exe	81

C:\Users\Admin\AppData\Local\Temp\f647bff60a531c047f570244d7863798b8762fce20a3b57b2db3c77ef63d6993.exe
"C:\Users\Admin\AppData\Local\Temp\f647bff60a531c047f570244d7863798b8762fce20a3b57b2db3c77ef63d6993.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:792
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell -nologo -noprofile
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4108
- C:\Users\Admin\AppData\Local\Temp\f647bff60a531c047f570244d7863798b8762fce20a3b57b2db3c77ef63d6993.exe
  "C:\Users\Admin\AppData\Local\Temp\f647bff60a531c047f570244d7863798b8762fce20a3b57b2db3c77ef63d6993.exe"
  2⤵
  PID:1256
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    PID:1852
- - C:\Windows\system32\cmd.exe
    C:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"
    3⤵
    PID:3924
  - - C:\Windows\system32\netsh.exe
      netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes
      4⤵
      Modifies Windows Firewall
      PID:4652
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    PID:1916
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -nologo -noprofile
    3⤵
    PID:1860
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    PID:4296
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      PID:2828
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
      4⤵
      Creates scheduled task(s)
      PID:3536
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:3892
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      PID:4600
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -nologo -noprofile
      4⤵
      PID:3588
  - - C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
      C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll
      4⤵
      PID:3372
  - - C:\Windows\SYSTEM32\schtasks.exe
      schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
      4⤵
      Creates scheduled task(s)
      PID:3868
  - - C:\Windows\windefender.exe
      "C:\Windows\windefender.exe"
      4⤵
      PID:3048
    - - C:\Windows\SysWOW64\cmd.exe
        
        cmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
        5⤵
        
        PID:4280
      - C:\Windows\SysWOW64\sc.exe
        
        sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)
        6⤵
        Launches sc.exe
        
        PID:2264

C:\Windows\windefender.exe
C:\Windows\windefender.exe
1⤵
PID:2544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

__PSScriptPolicyTest_umqsxl5k.bxn.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_umqsxl5k.bxn.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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injector.exe

Path C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
Size 281KB
SHA256 5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
MD5 d98e33b66343e7c96158444127a117f6
SHA1 bb716c5509a2bf345c6c1152f6e3e1452d39d50d
SHA512 705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
SSDEEP 3072:qbHszDaOJ8u2HHFIWr6e29kOnK7qFQ8wMii5I7kGvNjzMuszHshoY46bEydJ+dK9:SA3IlIA6e29vngqS8wMmuooh8z+8F
MD5 SHA1 SHA512 SSDEEP

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powershell.exe.log

Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Size 2KB
SHA256 9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02
MD5 d0c46cad6c0778401e21910bd6b56b70
SHA1 7be418951ea96326aca445b8dfe449b2bfa0dca6
SHA512 057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949
MD5 SHA1 SHA512

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