xworm | 49baec577965e592ac1b646cbc8a669ad597bfc1c3bac56dbf5ae414a79f1c24

General

Target

Yandex Music.exe
Size

135KB
MD5

dd5b316ece86e5b0c359ba72434c1db8
SHA1

55d021a330376a0255b9a4dbc421f1398e620e23
SHA256

49baec577965e592ac1b646cbc8a669ad597bfc1c3bac56dbf5ae414a79f1c24
SHA512

fc897f4e8ce6ab650714344201634eff390dd307beb802df204fea7e46aa0acac1f7651493a18ce4df73299dbbb169a70d0b91fdf168beb01cfb120f8afbb5af
SSDEEP

1536:OHAVA/86aWGnjCqbYRZXxjP6kyCOcB7pSJM80:OOUDenbYRvtOc7IJ4

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

may-transmit.gl.at.ply.gg:23184

Attributes

Install_directory
%ProgramData%
install_file
Svchost.exe
telegram
https://api.telegram.org/bot7326165458:AAF0gY0Qscv_8uQayegKSn1pMCW9SfL7V9I/sendMessage?chat_id=1299170167

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1748-1-0x0000000000620000-0x0000000000648000-memory.dmp	family_xworm
C:\ProgramData\Svchost.exe	family_xworm

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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

4960 powershell.exe
840 powershell.exe
4796 powershell.exe
880 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:

Yandex Music.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	Yandex Music.exe

Drops startup file 2 IoCs

Processes:

Yandex Music.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Svchost.lnk	Yandex Music.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Svchost.lnk	Yandex Music.exe

Executes dropped EXE 2 IoCs

Processes:

Svchost.exeSvchost.exe

pid process

5032 Svchost.exe
3488 Svchost.exe

pid	process
5032	Svchost.exe
3488	Svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Yandex Music.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Svchost = "C:\\ProgramData\\Svchost.exe"	Yandex Music.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.

Processes:

flow ioc

2 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

1780 schtasks.exe

flow	ioc
2	ip-api.com

pid	process
1780	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	process
4960	powershell.exe
4960	powershell.exe
840	powershell.exe
840	powershell.exe
4796	powershell.exe
4796	powershell.exe
880	powershell.exe
880	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

Yandex Music.exepowershell.exepowershell.exepowershell.exepowershell.exeSvchost.exeSvchost.exe

description	pid	process
Token: SeDebugPrivilege	1748	Yandex Music.exe
Token: SeDebugPrivilege	4960	powershell.exe
Token: SeDebugPrivilege	840	powershell.exe
Token: SeDebugPrivilege	4796	powershell.exe
Token: SeDebugPrivilege	880	powershell.exe
Token: SeDebugPrivilege	1748	Yandex Music.exe
Token: SeDebugPrivilege	5032	Svchost.exe
Token: SeDebugPrivilege	3488	Svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Yandex Music.exe

description	pid	process	target process
PID 1748 wrote to memory of 4960	1748	Yandex Music.exe	powershell.exe
PID 1748 wrote to memory of 4960	1748	Yandex Music.exe	powershell.exe
PID 1748 wrote to memory of 840	1748	Yandex Music.exe	powershell.exe
PID 1748 wrote to memory of 840	1748	Yandex Music.exe	powershell.exe
PID 1748 wrote to memory of 4796	1748	Yandex Music.exe	powershell.exe
PID 1748 wrote to memory of 4796	1748	Yandex Music.exe	powershell.exe
PID 1748 wrote to memory of 880	1748	Yandex Music.exe	powershell.exe
PID 1748 wrote to memory of 880	1748	Yandex Music.exe	powershell.exe
PID 1748 wrote to memory of 1780	1748	Yandex Music.exe	schtasks.exe
PID 1748 wrote to memory of 1780	1748	Yandex Music.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Yandex Music.exe
"C:\Users\Admin\AppData\Local\Temp\Yandex Music.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1748

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\Local\Temp\Yandex Music.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4960

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Yandex Music.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:840

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Svchost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4796

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Svchost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:880

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Svchost" /tr "C:\ProgramData\Svchost.exe"
2⤵
- Creates scheduled task(s)
PID:1780

C:\ProgramData\Svchost.exe
C:\ProgramData\Svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5032

C:\ProgramData\Svchost.exe
C:\ProgramData\Svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3488

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\ProgramData\Svchost.exe
Filesize
135KB

MD5
dd5b316ece86e5b0c359ba72434c1db8

SHA1
55d021a330376a0255b9a4dbc421f1398e620e23

SHA256
49baec577965e592ac1b646cbc8a669ad597bfc1c3bac56dbf5ae414a79f1c24

SHA512
fc897f4e8ce6ab650714344201634eff390dd307beb802df204fea7e46aa0acac1f7651493a18ce4df73299dbbb169a70d0b91fdf168beb01cfb120f8afbb5af

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Svchost.exe.log
Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
4178a021dab6578724f63a6a72b9b13b

SHA1
8e5d61c21edaafe4e2257ebe53f9b37b723838b7

SHA256
347338241585c510bb1fafae13447879318610ca4d844b0e73089957911d77fe

SHA512
0f49991948129415c2a02298072055d4de521e4a8cb9ae887bb2096683668fcb491b99d58fd6e239463a5ac981d756c4b2827cb52c1e1253b9cb114095e140c9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pcxu1n2j.yve.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1748-0-0x00007FF89DDC3000-0x00007FF89DDC5000-memory.dmp

Filesize
8KB

Download
memory/1748-57-0x00007FF89DDC0000-0x00007FF89E881000-memory.dmp

Filesize
10.8MB

Download
memory/1748-2-0x00007FF89DDC0000-0x00007FF89E881000-memory.dmp

Filesize
10.8MB

Download
memory/1748-1-0x0000000000620000-0x0000000000648000-memory.dmp

Filesize
160KB

Download
memory/4960-15-0x00007FF89DDC0000-0x00007FF89E881000-memory.dmp

Filesize
10.8MB

Download
memory/4960-18-0x00007FF89DDC0000-0x00007FF89E881000-memory.dmp

Filesize
10.8MB

Download
memory/4960-14-0x000001A9CB900000-0x000001A9CB922000-memory.dmp

Filesize
136KB

Download
memory/4960-13-0x00007FF89DDC0000-0x00007FF89E881000-memory.dmp

Filesize
10.8MB

Download
memory/4960-12-0x00007FF89DDC0000-0x00007FF89E881000-memory.dmp

Filesize
10.8MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads