xworm | 78faa3006a538ebb08d194b94ffaec25e5a704a40e0aafa533f3e5c538d453ad

Analysis

max time kernel
17s
max time network
26s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
17/11/2024, 10:36

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General

Target

Nursultan.exe
Size

491KB
MD5

d326a49628c02672b8199e2d7f6eefd6
SHA1

3d7bfcb1055df6d9a99b9a861735643d979dbef1
SHA256

78faa3006a538ebb08d194b94ffaec25e5a704a40e0aafa533f3e5c538d453ad
SHA512

95be9d339665ac48bce1e09de17e85f03bc6e4cbee590a2d3fa6f134ae63cacd1b995f7a9d929105fbbb81f3f31c5d77eb6f1f7d1fd0dfee0c07fd9ede5c52d7
SSDEEP

3072:qaXN3R7KFl0QuPcwo6AWDw32wgD29avk48DosgRARZKBzcoFRJvmFdJZJbvRNpG:lN39QIjHDC229avr8D+WKzjJ+FDH

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

19.ip.gl.ply.gg:33519

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x00290000000450c5-6.dat	family_xworm
behavioral1/memory/4516-24-0x00000000003E0000-0x000000000042A000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
320	powershell.exe
4332	powershell.exe
1964	powershell.exe
2316	powershell.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4074627901-37362009-3519777259-1000\Control Panel\International\Geo\Nation	Nursultan.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4074627901-37362009-3519777259-1000\Control Panel\International\Geo\Nation	Nursultan.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
4516	Nursultan.exe

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\USER\S-1-5-21-4074627901-37362009-3519777259-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	Nursultan.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
14	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4516	Nursultan.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
320	powershell.exe
320	powershell.exe
4332	powershell.exe
4332	powershell.exe
1964	powershell.exe
1964	powershell.exe
2316	powershell.exe
2316	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4516	Nursultan.exe
Token: SeDebugPrivilege	320	powershell.exe
Token: SeIncreaseQuotaPrivilege	320	powershell.exe
Token: SeSecurityPrivilege	320	powershell.exe
Token: SeTakeOwnershipPrivilege	320	powershell.exe
Token: SeLoadDriverPrivilege	320	powershell.exe
Token: SeSystemProfilePrivilege	320	powershell.exe
Token: SeSystemtimePrivilege	320	powershell.exe
Token: SeProfSingleProcessPrivilege	320	powershell.exe
Token: SeIncBasePriorityPrivilege	320	powershell.exe
Token: SeCreatePagefilePrivilege	320	powershell.exe
Token: SeBackupPrivilege	320	powershell.exe
Token: SeRestorePrivilege	320	powershell.exe
Token: SeShutdownPrivilege	320	powershell.exe
Token: SeDebugPrivilege	320	powershell.exe
Token: SeSystemEnvironmentPrivilege	320	powershell.exe
Token: SeRemoteShutdownPrivilege	320	powershell.exe
Token: SeUndockPrivilege	320	powershell.exe
Token: SeManageVolumePrivilege	320	powershell.exe
Token: 33	320	powershell.exe
Token: 34	320	powershell.exe
Token: 35	320	powershell.exe
Token: 36	320	powershell.exe
Token: SeDebugPrivilege	4332	powershell.exe
Token: SeIncreaseQuotaPrivilege	4332	powershell.exe
Token: SeSecurityPrivilege	4332	powershell.exe
Token: SeTakeOwnershipPrivilege	4332	powershell.exe
Token: SeLoadDriverPrivilege	4332	powershell.exe
Token: SeSystemProfilePrivilege	4332	powershell.exe
Token: SeSystemtimePrivilege	4332	powershell.exe
Token: SeProfSingleProcessPrivilege	4332	powershell.exe
Token: SeIncBasePriorityPrivilege	4332	powershell.exe
Token: SeCreatePagefilePrivilege	4332	powershell.exe
Token: SeBackupPrivilege	4332	powershell.exe
Token: SeRestorePrivilege	4332	powershell.exe
Token: SeShutdownPrivilege	4332	powershell.exe
Token: SeDebugPrivilege	4332	powershell.exe
Token: SeSystemEnvironmentPrivilege	4332	powershell.exe
Token: SeRemoteShutdownPrivilege	4332	powershell.exe
Token: SeUndockPrivilege	4332	powershell.exe
Token: SeManageVolumePrivilege	4332	powershell.exe
Token: 33	4332	powershell.exe
Token: 34	4332	powershell.exe
Token: 35	4332	powershell.exe
Token: 36	4332	powershell.exe
Token: SeDebugPrivilege	1964	powershell.exe
Token: SeIncreaseQuotaPrivilege	1964	powershell.exe
Token: SeSecurityPrivilege	1964	powershell.exe
Token: SeTakeOwnershipPrivilege	1964	powershell.exe
Token: SeLoadDriverPrivilege	1964	powershell.exe
Token: SeSystemProfilePrivilege	1964	powershell.exe
Token: SeSystemtimePrivilege	1964	powershell.exe
Token: SeProfSingleProcessPrivilege	1964	powershell.exe
Token: SeIncBasePriorityPrivilege	1964	powershell.exe
Token: SeCreatePagefilePrivilege	1964	powershell.exe
Token: SeBackupPrivilege	1964	powershell.exe
Token: SeRestorePrivilege	1964	powershell.exe
Token: SeShutdownPrivilege	1964	powershell.exe
Token: SeDebugPrivilege	1964	powershell.exe
Token: SeSystemEnvironmentPrivilege	1964	powershell.exe
Token: SeRemoteShutdownPrivilege	1964	powershell.exe
Token: SeUndockPrivilege	1964	powershell.exe
Token: SeManageVolumePrivilege	1964	powershell.exe
Token: 33	1964	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 864 wrote to memory of 4516	864	Nursultan.exe	81
PID 864 wrote to memory of 4516	864	Nursultan.exe	81
PID 864 wrote to memory of 4388	864	Nursultan.exe	82
PID 864 wrote to memory of 4388	864	Nursultan.exe	82
PID 4516 wrote to memory of 320	4516	Nursultan.exe	88
PID 4516 wrote to memory of 320	4516	Nursultan.exe	88
PID 4516 wrote to memory of 4332	4516	Nursultan.exe	92
PID 4516 wrote to memory of 4332	4516	Nursultan.exe	92
PID 4516 wrote to memory of 1964	4516	Nursultan.exe	94
PID 4516 wrote to memory of 1964	4516	Nursultan.exe	94
PID 4516 wrote to memory of 2316	4516	Nursultan.exe	96
PID 4516 wrote to memory of 2316	4516	Nursultan.exe	96

C:\Users\Admin\AppData\Local\Temp\Nursultan.exe
"C:\Users\Admin\AppData\Local\Temp\Nursultan.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:864
- C:\Users\Admin\AppData\Roaming\Nursultan.exe
  "C:\Users\Admin\AppData\Roaming\Nursultan.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4516
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Nursultan.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:320
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Nursultan.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4332
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1964
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:2316
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\..bat" "
  2⤵
  PID:4388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
654B

MD5
11c6e74f0561678d2cf7fc075a6cc00c

SHA1
535ee79ba978554abcb98c566235805e7ea18490

SHA256
d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

SHA512
32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

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

Filesize
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
c67441dfa09f61bca500bb43407c56b8

SHA1
5a56cf7cbeb48c109e2128c31b681fac3959157b

SHA256
63082da456c124d0bc516d2161d1613db5f3008d903e4066d2c7b4e90b435f33

SHA512
325de8b718b3a01df05e20e028c5882240e5fd2e96c771361b776312923ff178f27494a1f5249bf6d7365a99155eb8735a51366e85597008e6a10462e63ee0e8

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

Filesize
1KB

MD5
a180160461270886e84f88a3f52d5909

SHA1
f7e75d6ccfc2608e1c5b811be339377938f394fb

SHA256
da083f8768ac9145a807e0e711a10b573700a0ccda37b888faf311ff0bef6ce5

SHA512
0f2abfd5908fb97be5796fff5e19f957ac6a34fe9f8a1f97f537d3fcc6cf3b09d43d0ad945ad02ffbef287122af5ea704490138a4630ad9cc82cc620b7e2139d

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

Filesize
1KB

MD5
ba9bae5c33dc5abd2bd9df65fb177f73

SHA1
111dd2ab0f3e6eab377954d50ef6f4a1c913d91a

SHA256
3c6461a2797326e77802f15e5f21877cca22baccf06e8a2dc2fff8686a97e8a5

SHA512
faa79f7ed1e41b639bcebf3f12a65c54698405c5cb7e0fa8b4db04540c39cea9b63163a3efb2e843e97a31bc346ad5db5b05159b9d8bac6340d683c1e0153b41

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wuzpcy3u.hq4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\..bat

Filesize
11B

MD5
9905e5a33c6edd8eb5f59780afbf74de

SHA1
64b2cd0186ff6fe05072ee88e2bb54476023772e

SHA256
c134b2f85415ba5cfce3e3fe4745688335745a9bb22152ac8f5c77f190d8aee3

SHA512
e10711d0fb09db27192e9af05ae45b83cf3882d98e904a7f1f969cf24c2f9626f70f35d76f57477fe9c64a58bc74100410740e9d506d4e72d3e2900d6277816e

Download Submit
C:\Users\Admin\AppData\Roaming\Nursultan.exe

Filesize
273KB

MD5
05559d83ce9b8984e66740f882a2dac9

SHA1
afdf7442e86627d46d987ed8982f141926cdf3f1

SHA256
fb2aa53b1c2c105ac321abf3448afb452eedff2f0407846fb3d85a8b6236e357

SHA512
1b8e0141db5986a8117ae1c3aba26fb0551fbd24948a07745d8e36705bcf813803ec8570f8290d41ae8ed5d4da0d7690621b86b42e6d46575ea62fa733638364

Download Submit
memory/320-40-0x000001E666DA0000-0x000001E666FBD000-memory.dmp

Filesize
2.1MB

Download
memory/320-33-0x000001E64E780000-0x000001E64E7A2000-memory.dmp

Filesize
136KB

Download
memory/864-0-0x00007FFA86993000-0x00007FFA86995000-memory.dmp

Filesize
8KB

Download
memory/864-1-0x00000000003C0000-0x0000000000440000-memory.dmp

Filesize
512KB

Download
memory/4516-27-0x00007FFA86990000-0x00007FFA87452000-memory.dmp

Filesize
10.8MB

Download
memory/4516-25-0x00007FFA86990000-0x00007FFA87452000-memory.dmp

Filesize
10.8MB

Download
memory/4516-24-0x00000000003E0000-0x000000000042A000-memory.dmp

Filesize
296KB

Download
memory/4516-79-0x00007FFA86990000-0x00007FFA87452000-memory.dmp

Filesize
10.8MB

Download
memory/4516-80-0x00007FFA86990000-0x00007FFA87452000-memory.dmp

Filesize
10.8MB

Download