glupteba | 81b8d673c51e5f98a4690c11f4f4f156349b2ab850733cbac4119c7c6ec3d804

Analysis

max time kernel
1s
max time network
136s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-11-2024 15:28

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General

Target

40d22787e79f76e54bfeb359822a4b3ad8e6bef6.exe
Size

4.1MB
MD5

256506e20fe6bddbe08403debd4c39cc
SHA1

40d22787e79f76e54bfeb359822a4b3ad8e6bef6
SHA256

81b8d673c51e5f98a4690c11f4f4f156349b2ab850733cbac4119c7c6ec3d804
SHA512

0a626cc31e90a755706953fbffc6f9e4cbdb1a001c2688589594094f848dea5543b0b7fcbf55e983861f477f83e13c87bd165c5085514690f700b239f7543669
SSDEEP

98304:ozPUPTTQjdPp+CX8gA6IfphzteABldSZy:oLYTTQBPZ+fpbRky

Score

10^/10

glupteba discovery dropper evasion loader ransomware

Malware Config

Signatures

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

Glupteba payload 13 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2084-2-0x0000000002A50000-0x00000000032C7000-memory.dmp	family_glupteba
behavioral1/memory/2084-3-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2084-4-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2084-6-0x0000000002A50000-0x00000000032C7000-memory.dmp	family_glupteba
behavioral1/memory/2792-9-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2792-19-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2556-57-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2556-72-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2556-73-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2556-102-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2556-103-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2556-104-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba
behavioral1/memory/2556-105-0x0000000000400000-0x0000000000C91000-memory.dmp	family_glupteba

Modifies boot configuration data using bcdedit 1 TTPs 14 IoCs

ransomware evasion

Inhibit System Recovery

T1490

Processes:

bcdedit.exebcdedit.exebcdedit.exebcdedit.exebcdedit.exebcdedit.exebcdedit.exebcdedit.exebcdedit.exebcdedit.exebcdedit.exebcdedit.exebcdedit.exebcdedit.exe

pid	process
2424	bcdedit.exe
2316	bcdedit.exe
2236	bcdedit.exe
872	bcdedit.exe
1732	bcdedit.exe
2312	bcdedit.exe
2216	bcdedit.exe
1324	bcdedit.exe
1536	bcdedit.exe
2184	bcdedit.exe
2340	bcdedit.exe
1572	bcdedit.exe
1968	bcdedit.exe
1964	bcdedit.exe

Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2652 netsh.exe
Possible attempt to disable PatchGuard 2 TTPs
Rootkits can use kernel patching to embed themselves in an operating system.
evasion

Impair Defenses
T1562

Command and Scripting Interpreter
T1059
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
discovery

System Language Discovery
T1614.001

Processes:

40d22787e79f76e54bfeb359822a4b3ad8e6bef6.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 40d22787e79f76e54bfeb359822a4b3ad8e6bef6.exe
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exeschtasks.exe

pid process

2968 schtasks.exe
2996 schtasks.exe

pid	process
2652	netsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	40d22787e79f76e54bfeb359822a4b3ad8e6bef6.exe

pid	process
2968	schtasks.exe
2996	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\40d22787e79f76e54bfeb359822a4b3ad8e6bef6.exe
"C:\Users\Admin\AppData\Local\Temp\40d22787e79f76e54bfeb359822a4b3ad8e6bef6.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2084
- C:\Users\Admin\AppData\Local\Temp\40d22787e79f76e54bfeb359822a4b3ad8e6bef6.exe
  "C:\Users\Admin\AppData\Local\Temp\40d22787e79f76e54bfeb359822a4b3ad8e6bef6.exe"
  2⤵
  PID:2792
- - 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:2832
  - - 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:2652
- - C:\Windows\rss\csrss.exe
    C:\Windows\rss\csrss.exe
    3⤵
    PID:2556
  - - C:\Windows\system32\schtasks.exe
      schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2996
  - - C:\Windows\system32\schtasks.exe
      schtasks /delete /tn ScheduledUpdate /f
      4⤵
      PID:1832
  - - C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe
      "C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"
      4⤵
      PID:1644
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -create {71A3C7FC-F751-4982-AEC1-E958357E6813} -d "Windows Fast Mode" -application OSLOADER
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:1964
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} device partition=C:
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:1968
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} osdevice partition=C:
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:1572
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} systemroot \Windows
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:2340
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} path \Windows\system32\osloader.exe
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:2424
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} kernel ntkrnlmp.exe
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:2184
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} recoveryenabled 0
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:1536
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} nx OptIn
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:1324
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} nointegritychecks 1
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:2236
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -set {71A3C7FC-F751-4982-AEC1-E958357E6813} inherit {bootloadersettings}
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:2316
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -displayorder {71A3C7FC-F751-4982-AEC1-E958357E6813} -addlast
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:2216
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -timeout 0
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:2312
    - - C:\Windows\system32\bcdedit.exe
        
        C:\Windows\system32\bcdedit.exe -default {71A3C7FC-F751-4982-AEC1-E958357E6813}
        5⤵
        Modifies boot configuration data using bcdedit
        
        PID:872
  - - 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:1736
  - - C:\Windows\system32\bcdedit.exe
      C:\Windows\Sysnative\bcdedit.exe /v
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1732
  - - C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
      C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe
      4⤵
      PID:1684
  - - C:\Windows\system32\schtasks.exe
      schtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2968

C:\Windows\system32\makecab.exe
"C:\Windows\system32\makecab.exe" C:\Windows\Logs\CBS\CbsPersist_20241101152923.log C:\Windows\Logs\CBS\CbsPersist_20241101152923.cab
1⤵
PID:2208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Symbols\ntkrnlmp.pdb\AAF33CF37E194E98957768CF9C02DE8E2\download.error

Filesize
8.3MB

MD5
fd2727132edd0b59fa33733daa11d9ef

SHA1
63e36198d90c4c2b9b09dd6786b82aba5f03d29a

SHA256
3a72dbedc490773f90e241c8b3b839383a63ce36426a4f330a0f754b14b4d23e

SHA512
3e251be7d0e8db92d50092a4c4be3c74f42f3d564c72981f43a8e0fe06427513bfa0f67821a61a503a4f85741f0b150280389f8f4b4f01cdfd98edce5af29e6e

Download Submit
C:\Users\Admin\AppData\Local\Temp\Symbols\winload_prod.pdb\768283CA443847FB8822F9DB1F36ECC51\download.error

Filesize
492KB

MD5
fafbf2197151d5ce947872a4b0bcbe16

SHA1
a86eaa2dd9fc6d36fcfb41df7ead8d1166aea020

SHA256
feb122b7916a1e62a7a6ae8d25ea48a2efc86f6e6384f5526e18ffbfc5f5ff71

SHA512
acbd49a111704d001a4ae44d1a071d566452f92311c5c0099d57548eddc9b3393224792c602022df5c3dd19b0a1fb4eff965bf038c8783ae109336699f9d13f6

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\dsefix.exe

Filesize
94KB

MD5
d98e78fd57db58a11f880b45bb659767

SHA1
ab70c0d3bd9103c07632eeecee9f51d198ed0e76

SHA256
414035cc96d8bcc87ed173852a839ffbb45882a98c7a6f7b821e1668891deef0

SHA512
aafbd3eee102d0b682c4c854d69d50bac077e48f7f0dd8a5f913c6c73027aed7231d99fc9d716511759800da8c4f0f394b318821e9e47f6e62e436c8725a7831

Download Submit
C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe

Filesize
281KB

MD5
d98e33b66343e7c96158444127a117f6

SHA1
bb716c5509a2bf345c6c1152f6e3e1452d39d50d

SHA256
5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1

SHA512
705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5

Download Submit
C:\Users\Admin\AppData\Local\Temp\osloader.exe

Filesize
591KB

MD5
e2f68dc7fbd6e0bf031ca3809a739346

SHA1
9c35494898e65c8a62887f28e04c0359ab6f63f5

SHA256
b74cd24cef07f0226e7b777f7862943faee4cf288178b423d5344b0769dc15d4

SHA512
26256a12b5b8b3a40b34f18e081cdb45ea11845589c9d458a79385a4b8178f32164b417ddc9346fab8299bc6d4b9fedb620274c4edf9321424f37a2e2a6de579

Download Submit
\Users\Admin\AppData\Local\Temp\csrss\patch.exe

Filesize
1.7MB

MD5
13aaafe14eb60d6a718230e82c671d57

SHA1
e039dd924d12f264521b8e689426fb7ca95a0a7b

SHA256
f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3

SHA512
ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3

Download Submit
\Users\Admin\AppData\Local\Temp\dbghelp.dll

Filesize
1.5MB

MD5
f0616fa8bc54ece07e3107057f74e4db

SHA1
b33995c4f9a004b7d806c4bb36040ee844781fca

SHA256
6e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026

SHA512
15242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c

Download Submit
\Users\Admin\AppData\Local\Temp\ntkrnlmp.exe

Filesize
5.3MB

MD5
1afff8d5352aecef2ecd47ffa02d7f7d

SHA1
8b115b84efdb3a1b87f750d35822b2609e665bef

SHA256
c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1

SHA512
e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb

Download Submit
\Users\Admin\AppData\Local\Temp\symsrv.dll

Filesize
163KB

MD5
5c399d34d8dc01741269ff1f1aca7554

SHA1
e0ceed500d3cef5558f3f55d33ba9c3a709e8f55

SHA256
e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f

SHA512
8ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d

Download Submit
\Windows\rss\csrss.exe

Filesize
4.1MB

MD5
256506e20fe6bddbe08403debd4c39cc

SHA1
40d22787e79f76e54bfeb359822a4b3ad8e6bef6

SHA256
81b8d673c51e5f98a4690c11f4f4f156349b2ab850733cbac4119c7c6ec3d804

SHA512
0a626cc31e90a755706953fbffc6f9e4cbdb1a001c2688589594094f848dea5543b0b7fcbf55e983861f477f83e13c87bd165c5085514690f700b239f7543669

Download Submit
memory/1644-40-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/1644-41-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/2084-0-0x0000000002660000-0x0000000002A49000-memory.dmp

Filesize
3.9MB

Download
memory/2084-6-0x0000000002A50000-0x00000000032C7000-memory.dmp

Filesize
8.5MB

Download
memory/2084-2-0x0000000002A50000-0x00000000032C7000-memory.dmp

Filesize
8.5MB

Download
memory/2084-5-0x0000000002660000-0x0000000002A49000-memory.dmp

Filesize
3.9MB

Download
memory/2084-1-0x0000000002660000-0x0000000002A49000-memory.dmp

Filesize
3.9MB

Download
memory/2084-4-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2084-3-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-102-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-107-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-72-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-73-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-20-0x0000000002650000-0x0000000002A39000-memory.dmp

Filesize
3.9MB

Download
memory/2556-112-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-111-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-110-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-109-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-103-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-104-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-105-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-106-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-57-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2556-108-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2792-7-0x0000000002680000-0x0000000002A69000-memory.dmp

Filesize
3.9MB

Download
memory/2792-8-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2792-9-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download
memory/2792-19-0x0000000000400000-0x0000000000C91000-memory.dmp

Filesize
8.6MB

Download