guloader | a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725

Resubmissions

24/11/2024, 15:40

241124-s4cllssndp 10

24/11/2024, 15:36

241124-s1w6vasmdk 10

Analysis

max time kernel
59s
max time network
69s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
24/11/2024, 15:40

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Report Analysis Logs

General

Target

18ea5087eb82e075ca35d2b2dcff9450.exe
Size

555KB
MD5

18ea5087eb82e075ca35d2b2dcff9450
SHA1

dc436fbaa777672d44a8b90b98c4a1c266885845
SHA256

a7247c64cc0168290ca3b210e59ef629b46f513205bc6562ec79cdd2cda71725
SHA512

8fbeb3caf13a3fe1359002c2848ff5767e6b2f226049546c683f2b6144756196cfe39f66e4959c8426cdfaeff6a169a4cf5939de241e4a898887d8810ec620c6
SSDEEP

12288:32EIiN/Z1++w1p+wJuQbIgJwCQBk5wBcamd3ZhZs:3wiN/K+wHBfhQBk5s3mdPZs

Score

10^/10

guloader xworm discovery downloader execution rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

87.121.86.8:4020

Mutex

ssjpS2lhbkGsnEgT

Attributes

Install_directory
%AppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/3188-15-0x00000000007E0000-0x00000000007F0000-memory.dmp	family_xworm

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4584	powershell.exe
4720	powershell.exe
2988	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\18ea5087eb82e075ca35d2b2dcff9450.lnk	18ea5087eb82e075ca35d2b2dcff9450.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\18ea5087eb82e075ca35d2b2dcff9450.lnk	18ea5087eb82e075ca35d2b2dcff9450.exe

Loads dropped DLL 1 IoCs

pid	Process
3628	18ea5087eb82e075ca35d2b2dcff9450.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3188	18ea5087eb82e075ca35d2b2dcff9450.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3628	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3628 set thread context of 3188	3628	18ea5087eb82e075ca35d2b2dcff9450.exe	77

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\slnger\barometerstandenes.san	18ea5087eb82e075ca35d2b2dcff9450.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	18ea5087eb82e075ca35d2b2dcff9450.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	18ea5087eb82e075ca35d2b2dcff9450.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2499603254-3415597248-1508446358-1000_Classes\Local Settings	OpenWith.exe

Suspicious behavior: EnumeratesProcesses 61 IoCs

pid	Process
4584	powershell.exe
4584	powershell.exe
4720	powershell.exe
4720	powershell.exe
2988	powershell.exe
2988	powershell.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3188	18ea5087eb82e075ca35d2b2dcff9450.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3628	18ea5087eb82e075ca35d2b2dcff9450.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3188	18ea5087eb82e075ca35d2b2dcff9450.exe
Token: SeDebugPrivilege	4584	powershell.exe
Token: SeDebugPrivilege	4720	powershell.exe
Token: SeDebugPrivilege	2988	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3188	18ea5087eb82e075ca35d2b2dcff9450.exe
3224	OpenWith.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3628 wrote to memory of 3188	3628	18ea5087eb82e075ca35d2b2dcff9450.exe	77
PID 3628 wrote to memory of 3188	3628	18ea5087eb82e075ca35d2b2dcff9450.exe	77
PID 3628 wrote to memory of 3188	3628	18ea5087eb82e075ca35d2b2dcff9450.exe	77
PID 3628 wrote to memory of 3188	3628	18ea5087eb82e075ca35d2b2dcff9450.exe	77
PID 3628 wrote to memory of 3188	3628	18ea5087eb82e075ca35d2b2dcff9450.exe	77
PID 3188 wrote to memory of 4584	3188	18ea5087eb82e075ca35d2b2dcff9450.exe	79
PID 3188 wrote to memory of 4584	3188	18ea5087eb82e075ca35d2b2dcff9450.exe	79
PID 3188 wrote to memory of 4584	3188	18ea5087eb82e075ca35d2b2dcff9450.exe	79
PID 3188 wrote to memory of 4720	3188	18ea5087eb82e075ca35d2b2dcff9450.exe	81
PID 3188 wrote to memory of 4720	3188	18ea5087eb82e075ca35d2b2dcff9450.exe	81
PID 3188 wrote to memory of 4720	3188	18ea5087eb82e075ca35d2b2dcff9450.exe	81
PID 3188 wrote to memory of 2988	3188	18ea5087eb82e075ca35d2b2dcff9450.exe	83
PID 3188 wrote to memory of 2988	3188	18ea5087eb82e075ca35d2b2dcff9450.exe	83
PID 3188 wrote to memory of 2988	3188	18ea5087eb82e075ca35d2b2dcff9450.exe	83

C:\Users\Admin\AppData\Local\Temp\18ea5087eb82e075ca35d2b2dcff9450.exe
"C:\Users\Admin\AppData\Local\Temp\18ea5087eb82e075ca35d2b2dcff9450.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3628
- C:\Users\Admin\AppData\Local\Temp\18ea5087eb82e075ca35d2b2dcff9450.exe
  "C:\Users\Admin\AppData\Local\Temp\18ea5087eb82e075ca35d2b2dcff9450.exe"
  2⤵
  - Drops startup file
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3188
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\18ea5087eb82e075ca35d2b2dcff9450.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4584
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '18ea5087eb82e075ca35d2b2dcff9450.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4720
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\18ea5087eb82e075ca35d2b2dcff9450.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2988

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2248

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:3224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d0c46cad6c0778401e21910bd6b56b70

SHA1
7be418951ea96326aca445b8dfe449b2bfa0dca6

SHA256
9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02

SHA512
057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
db92d7041e62fca2713935081f1c4a78

SHA1
8c0fd39ff312916983080f1cfc7ec620686c1d07

SHA256
29b298203b31984a0a51e20d9d816b5fda7013a8390d93d327ec2a72486d65b9

SHA512
ecd20994c634bda0d20a344fe1cdea7f00154b83f19213a4d1205aec21deb1f03d1eb85c9c93bd7a6cc000dbdb6d1acfdf81d072c715b6a2d53067298b1f7359

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
6fc9e38f184d3b1e45cdc8758b9346b6

SHA1
7bce57efd6a77a3bfe8c53ad443e3faa18740568

SHA256
21e6f547ca65e845c9e4fb8e278689b07b124a93d435143a8e0eec4151d62391

SHA512
894805a8282c72f355a50216329e682fc36981789f1cdcfe48d3a6383d875f8f270bb29a98e3039dd6007eb49e86c29f68f8e20548a81c4eaf4bae0aa70fed07

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vbnwudxm.3r4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsq88F7.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/2988-88-0x000000006E4E0000-0x000000006E52C000-memory.dmp

Filesize
304KB

Download
memory/3188-102-0x0000000037200000-0x00000000377A6000-memory.dmp

Filesize
5.6MB

Download
memory/3188-14-0x00000000007E0000-0x0000000001AF7000-memory.dmp

Filesize
19.1MB

Download
memory/3188-15-0x00000000007E0000-0x00000000007F0000-memory.dmp

Filesize
64KB

Download
memory/3188-16-0x0000000036900000-0x000000003699C000-memory.dmp

Filesize
624KB

Download
memory/3188-18-0x00007FF9377C0000-0x00007FF9379C9000-memory.dmp

Filesize
2.0MB

Download
memory/3188-104-0x00000000379D0000-0x00000000379DA000-memory.dmp

Filesize
40KB

Download
memory/3188-103-0x0000000037910000-0x00000000379A2000-memory.dmp

Filesize
584KB

Download
memory/3188-12-0x00007FF9377C0000-0x00007FF9379C9000-memory.dmp

Filesize
2.0MB

Download
memory/3628-13-0x0000000002F00000-0x0000000005439000-memory.dmp

Filesize
37.2MB

Download
memory/3628-11-0x0000000002F00000-0x0000000005439000-memory.dmp

Filesize
37.2MB

Download
memory/3628-10-0x00007FF9377C0000-0x00007FF9379C9000-memory.dmp

Filesize
2.0MB

Download
memory/3628-9-0x00007FF9377C1000-0x00007FF9378EA000-memory.dmp

Filesize
1.2MB

Download
memory/3628-8-0x0000000002F00000-0x0000000005439000-memory.dmp

Filesize
37.2MB

Download
memory/4584-35-0x0000000006DC0000-0x0000000006DF4000-memory.dmp

Filesize
208KB

Download
memory/4584-53-0x0000000007D90000-0x0000000007DA5000-memory.dmp

Filesize
84KB

Download
memory/4584-36-0x000000006E4E0000-0x000000006E52C000-memory.dmp

Filesize
304KB

Download
memory/4584-45-0x00000000079D0000-0x00000000079EE000-memory.dmp

Filesize
120KB

Download
memory/4584-46-0x0000000007A00000-0x0000000007AA4000-memory.dmp

Filesize
656KB

Download
memory/4584-47-0x0000000008180000-0x00000000087FA000-memory.dmp

Filesize
6.5MB

Download
memory/4584-48-0x0000000007B40000-0x0000000007B5A000-memory.dmp

Filesize
104KB

Download
memory/4584-49-0x0000000007BB0000-0x0000000007BBA000-memory.dmp

Filesize
40KB

Download
memory/4584-50-0x0000000007DE0000-0x0000000007E76000-memory.dmp

Filesize
600KB

Download
memory/4584-51-0x0000000007D50000-0x0000000007D61000-memory.dmp

Filesize
68KB

Download
memory/4584-52-0x0000000007D80000-0x0000000007D8E000-memory.dmp

Filesize
56KB

Download
memory/4584-34-0x0000000006830000-0x000000000687C000-memory.dmp

Filesize
304KB

Download
memory/4584-54-0x0000000007EA0000-0x0000000007EBA000-memory.dmp

Filesize
104KB

Download
memory/4584-55-0x0000000007E80000-0x0000000007E88000-memory.dmp

Filesize
32KB

Download
memory/4584-33-0x0000000006800000-0x000000000681E000-memory.dmp

Filesize
120KB

Download
memory/4584-19-0x0000000002FE0000-0x0000000003016000-memory.dmp

Filesize
216KB

Download
memory/4584-32-0x0000000006350000-0x00000000066A7000-memory.dmp

Filesize
3.3MB

Download
memory/4584-20-0x0000000005BD0000-0x00000000061FA000-memory.dmp

Filesize
6.2MB

Download
memory/4584-23-0x00000000062E0000-0x0000000006346000-memory.dmp

Filesize
408KB

Download
memory/4584-22-0x0000000006270000-0x00000000062D6000-memory.dmp

Filesize
408KB

Download
memory/4584-21-0x0000000005960000-0x0000000005982000-memory.dmp

Filesize
136KB

Download
memory/4720-69-0x000000006E4E0000-0x000000006E52C000-memory.dmp

Filesize
304KB

Download
memory/4720-59-0x0000000005B30000-0x0000000005E87000-memory.dmp

Filesize
3.3MB

Download