guloader | 5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727

Analysis

max time kernel
110s
max time network
113s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30-11-2024 19:18

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General

Target

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe
Size

555KB
MD5

7efdc7ca9699ef7177443900e5507ab2
SHA1

94ff3238018e8d5e20b21cd5eaa83e5fcc3f6c73
SHA256

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727
SHA512

a08a21b4df939da53f070c647b3929b11dfceee470e624a1a8aad2a4d2c29f4c45f6acc3b9f00c0e25aa872ec5aa499249fae11b3585f17163d8626d7f6bcfa4
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

Processes:

resource	yara_rule
behavioral2/memory/3764-15-0x00000000007E0000-0x00000000007F0000-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

Processes:

powershell.exepowershell.exepowershell.exe

pid	Process
3776	powershell.exe
3812	powershell.exe
1072	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

Drops startup file 2 IoCs

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.lnk	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.lnk	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

Loads dropped DLL 1 IoCs

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

pid	Process
768	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

pid	Process
3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

pid	Process
768	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe
3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

description	pid	Process	procid_target
PID 768 set thread context of 3764	768	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	88

Drops file in Windows directory 1 IoCs

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\slnger\barometerstandenes.san	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.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

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exepowershell.exepowershell.exepowershell.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.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

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

powershell.exepowershell.exepowershell.exe5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

pid	Process
3776	powershell.exe
3776	powershell.exe
3812	powershell.exe
3812	powershell.exe
1072	powershell.exe
1072	powershell.exe
3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

pid	Process
768	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exepowershell.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe
Token: SeDebugPrivilege	3776	powershell.exe
Token: SeDebugPrivilege	3812	powershell.exe
Token: SeDebugPrivilege	1072	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

pid	Process
3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe

description	pid	Process	procid_target
PID 768 wrote to memory of 3764	768	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	88
PID 768 wrote to memory of 3764	768	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	88
PID 768 wrote to memory of 3764	768	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	88
PID 768 wrote to memory of 3764	768	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	88
PID 768 wrote to memory of 3764	768	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	88
PID 3764 wrote to memory of 3776	3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	99
PID 3764 wrote to memory of 3776	3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	99
PID 3764 wrote to memory of 3776	3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	99
PID 3764 wrote to memory of 3812	3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	101
PID 3764 wrote to memory of 3812	3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	101
PID 3764 wrote to memory of 3812	3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	101
PID 3764 wrote to memory of 1072	3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	105
PID 3764 wrote to memory of 1072	3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	105
PID 3764 wrote to memory of 1072	3764	5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe	105

C:\Users\Admin\AppData\Local\Temp\5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe
"C:\Users\Admin\AppData\Local\Temp\5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.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:768
- C:\Users\Admin\AppData\Local\Temp\5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe
  "C:\Users\Admin\AppData\Local\Temp\5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe"
  2⤵
  - Checks computer location settings
  - 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:3764
- - 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\5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3776
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3812
- - 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\5d3f5e3134c740cd9154b677fe1f6465acd0efd74818220e8655de7296801727.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1072

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

Query Registry

T1012

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
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
296b632ae030a3a1609aa0b504f101f1

SHA1
52ff1e74e3040ff15c13236bfeeabe4f7f786aa4

SHA256
8bfc6228a8c29975465624b8ae8899a3f00a61aecba72eb15a55d70788d19c24

SHA512
8b078dde0d210d9e834b76439434179a7b0606614bfededd38530ece3cc6d2630ee3835b3e3947c6c014492f4f54b1e31487e6fa15bc374cc0508c1decbfcc2a

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

Filesize
18KB

MD5
839e04be7b2c055bc4a866f8a9ae693d

SHA1
8ea05cfd63b291461b85bd5164c6388609cfb4ac

SHA256
d1e86367644885449770c027e339c05e134c4f424c301c015ebf858e3319816b

SHA512
391ee76c71bc9ba4166834c7c6627f368a8457934da8203f91c28ad5572bf5e9975f25f53d0f8e5a998453376043c7bf4b64858a3c97ab1bb3b389171adc3445

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kqa42usk.eol.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\nshA614.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/768-8-0x0000000002DF0000-0x0000000005329000-memory.dmp

Filesize
37.2MB

Download
memory/768-9-0x0000000077121000-0x0000000077241000-memory.dmp

Filesize
1.1MB

Download
memory/768-11-0x0000000073E14000-0x0000000073E15000-memory.dmp

Filesize
4KB

Download
memory/768-10-0x0000000002DF0000-0x0000000005329000-memory.dmp

Filesize
37.2MB

Download
memory/768-12-0x0000000002DF0000-0x0000000005329000-memory.dmp

Filesize
37.2MB

Download
memory/1072-94-0x000000006E2E0000-0x000000006E32C000-memory.dmp

Filesize
304KB

Download
memory/3764-15-0x00000000007E0000-0x00000000007F0000-memory.dmp

Filesize
64KB

Download
memory/3764-110-0x00000000378E0000-0x0000000037972000-memory.dmp

Filesize
584KB

Download
memory/3764-109-0x00000000372C0000-0x0000000037864000-memory.dmp

Filesize
5.6MB

Download
memory/3764-111-0x00000000379A0000-0x00000000379AA000-memory.dmp

Filesize
40KB

Download
memory/3764-18-0x0000000001A40000-0x0000000003F79000-memory.dmp

Filesize
37.2MB

Download
memory/3764-16-0x00000000368F0000-0x000000003698C000-memory.dmp

Filesize
624KB

Download
memory/3764-14-0x00000000007E0000-0x0000000001A34000-memory.dmp

Filesize
18.3MB

Download
memory/3764-13-0x0000000001A40000-0x0000000003F79000-memory.dmp

Filesize
37.2MB

Download
memory/3776-36-0x0000000006720000-0x0000000006752000-memory.dmp

Filesize
200KB

Download
memory/3776-55-0x00000000076C0000-0x00000000076D4000-memory.dmp

Filesize
80KB

Download
memory/3776-37-0x000000006E2E0000-0x000000006E32C000-memory.dmp

Filesize
304KB

Download
memory/3776-47-0x0000000006760000-0x000000000677E000-memory.dmp

Filesize
120KB

Download
memory/3776-48-0x0000000007340000-0x00000000073E3000-memory.dmp

Filesize
652KB

Download
memory/3776-49-0x0000000007AC0000-0x000000000813A000-memory.dmp

Filesize
6.5MB

Download
memory/3776-50-0x0000000007480000-0x000000000749A000-memory.dmp

Filesize
104KB

Download
memory/3776-51-0x00000000074F0000-0x00000000074FA000-memory.dmp

Filesize
40KB

Download
memory/3776-52-0x0000000007700000-0x0000000007796000-memory.dmp

Filesize
600KB

Download
memory/3776-53-0x0000000007680000-0x0000000007691000-memory.dmp

Filesize
68KB

Download
memory/3776-54-0x00000000076B0000-0x00000000076BE000-memory.dmp

Filesize
56KB

Download
memory/3776-35-0x0000000006160000-0x00000000061AC000-memory.dmp

Filesize
304KB

Download
memory/3776-56-0x00000000077C0000-0x00000000077DA000-memory.dmp

Filesize
104KB

Download
memory/3776-57-0x00000000077A0000-0x00000000077A8000-memory.dmp

Filesize
32KB

Download
memory/3776-34-0x0000000006120000-0x000000000613E000-memory.dmp

Filesize
120KB

Download
memory/3776-19-0x0000000004BF0000-0x0000000004C26000-memory.dmp

Filesize
216KB

Download
memory/3776-33-0x0000000005D30000-0x0000000006084000-memory.dmp

Filesize
3.3MB

Download
memory/3776-20-0x0000000005260000-0x0000000005888000-memory.dmp

Filesize
6.2MB

Download
memory/3776-23-0x0000000005900000-0x0000000005966000-memory.dmp

Filesize
408KB

Download
memory/3776-22-0x0000000005890000-0x00000000058F6000-memory.dmp

Filesize
408KB

Download
memory/3776-21-0x00000000051A0000-0x00000000051C2000-memory.dmp

Filesize
136KB

Download
memory/3812-72-0x000000006E2E0000-0x000000006E32C000-memory.dmp

Filesize
304KB

Download
memory/3812-66-0x0000000005EC0000-0x0000000006214000-memory.dmp

Filesize
3.3MB

Download