xworm | 93fd63fcd2fed7f414a1bade221201666c0b67325c285f98b89defb724684b9d

General

Target

93fd63fcd2fed7f414a1bade221201666c0b67325c285f98b89defb724684b9d.exe
Size

1.8MB
MD5

a5c4d41fa8e73691310fdd81db4a0515
SHA1

4895cbc20e4620b2af6cc6a02b92feed29b10dbe
SHA256

93fd63fcd2fed7f414a1bade221201666c0b67325c285f98b89defb724684b9d
SHA512

e8cb8a2a237b8236b3e977ebc579d75d6b75f160bd68efd97e79b3935f20acee23693b84c36041af74e42c2761675f4b500c596ff2bb8155eb5c94b7addca658
SSDEEP

49152:4hsk4G8SHHKXKPyv7iD9tBlfFfBsqeQj:f4HKKbDBl5Btj

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:58347

continue-silk.gl.at.ply.gg:58347

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000900000002341d-4.dat	family_xworm
behavioral2/memory/4056-15-0x0000000000C70000-0x0000000000C86000-memory.dmp	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

pid	Process
4588	powershell.exe
2984	powershell.exe
2392	powershell.exe
2328	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-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	XClient.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	93fd63fcd2fed7f414a1bade221201666c0b67325c285f98b89defb724684b9d.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 5 IoCs

pid	Process
4056	XClient.exe
744	Multi-Loader.exe
1028	svchost.exe
4444	svchost.exe
1100	svchost.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-1-5-21-1750093773-264148664-1320403265-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XClient.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
17	ip-api.com

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1832	schtasks.exe

Suspicious behavior: EnumeratesProcesses 35 IoCs

pid	Process
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
744	Multi-Loader.exe
4588	powershell.exe
4588	powershell.exe
2984	powershell.exe
2984	powershell.exe
2392	powershell.exe
2392	powershell.exe
2328	powershell.exe
2328	powershell.exe
4056	XClient.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4056	XClient.exe
Token: SeDebugPrivilege	4588	powershell.exe
Token: SeDebugPrivilege	2984	powershell.exe
Token: SeDebugPrivilege	2392	powershell.exe
Token: SeDebugPrivilege	2328	powershell.exe
Token: SeDebugPrivilege	4056	XClient.exe
Token: SeDebugPrivilege	1028	svchost.exe
Token: SeDebugPrivilege	4444	svchost.exe
Token: SeDebugPrivilege	1100	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
744	Multi-Loader.exe
4056	XClient.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 4512 wrote to memory of 4056	4512	93fd63fcd2fed7f414a1bade221201666c0b67325c285f98b89defb724684b9d.exe	84
PID 4512 wrote to memory of 4056	4512	93fd63fcd2fed7f414a1bade221201666c0b67325c285f98b89defb724684b9d.exe	84
PID 4512 wrote to memory of 744	4512	93fd63fcd2fed7f414a1bade221201666c0b67325c285f98b89defb724684b9d.exe	85
PID 4512 wrote to memory of 744	4512	93fd63fcd2fed7f414a1bade221201666c0b67325c285f98b89defb724684b9d.exe	85
PID 744 wrote to memory of 3336	744	Multi-Loader.exe	88
PID 744 wrote to memory of 3336	744	Multi-Loader.exe	88
PID 3336 wrote to memory of 1704	3336	cmd.exe	89
PID 3336 wrote to memory of 1704	3336	cmd.exe	89
PID 3336 wrote to memory of 464	3336	cmd.exe	90
PID 3336 wrote to memory of 464	3336	cmd.exe	90
PID 3336 wrote to memory of 436	3336	cmd.exe	91
PID 3336 wrote to memory of 436	3336	cmd.exe	91
PID 4056 wrote to memory of 4588	4056	XClient.exe	94
PID 4056 wrote to memory of 4588	4056	XClient.exe	94
PID 4056 wrote to memory of 2984	4056	XClient.exe	96
PID 4056 wrote to memory of 2984	4056	XClient.exe	96
PID 4056 wrote to memory of 2392	4056	XClient.exe	98
PID 4056 wrote to memory of 2392	4056	XClient.exe	98
PID 4056 wrote to memory of 2328	4056	XClient.exe	100
PID 4056 wrote to memory of 2328	4056	XClient.exe	100
PID 4056 wrote to memory of 1832	4056	XClient.exe	102
PID 4056 wrote to memory of 1832	4056	XClient.exe	102

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\93fd63fcd2fed7f414a1bade221201666c0b67325c285f98b89defb724684b9d.exe
"C:\Users\Admin\AppData\Local\Temp\93fd63fcd2fed7f414a1bade221201666c0b67325c285f98b89defb724684b9d.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4512
- C:\Users\Admin\AppData\Roaming\XClient.exe
  "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4056
- - 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\XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4588
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2984
- - 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:2392
- - 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
    - Suspicious use of AdjustPrivilegeToken
    PID:2328
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1832
- C:\Users\Admin\AppData\Local\Temp\Multi-Loader.exe
  "C:\Users\Admin\AppData\Local\Temp\Multi-Loader.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:744
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Multi-Loader.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3336
  - - C:\Windows\system32\certutil.exe
      certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Multi-Loader.exe" MD5
      4⤵
      PID:1704
  - - C:\Windows\system32\find.exe
      find /i /v "md5"
      4⤵
      PID:464
  - - C:\Windows\system32\find.exe
      find /i /v "certutil"
      4⤵
      PID:436

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1028

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4444

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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\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\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
da8f5c88a0bf88fdc1c20d46b6d948a8

SHA1
acd17190c25cd1e8299eb5ede3e7785332274b6e

SHA256
157e786301b4f83348edcc209b502ed8577e6c02d3e4fffe11e9fc6a004d8908

SHA512
71c248955c4f0b687b7526302a3dc033e8b0e3d234b26e5ec810a0f18b513f6862525809074451023ffbaf722ba7c81479e6fc24e355f54e3898e8ce3ada788b

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

Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

Download Submit
C:\Users\Admin\AppData\Local\Temp\Multi-Loader.exe

Filesize
1.7MB

MD5
38aa65a7ecc97ba48103711b4d5f19dd

SHA1
410a77931380294fc0829955d15df11dd9db485c

SHA256
5e75505458c6dd344b9ae4a87c194af9b6b521a8c7dea0fd7b0f2d884edf7774

SHA512
5df0ddc1b57021f00d322b9bcbc2570c94114067fa455f0ead34da6633543a81dcc38c5335afa83c9e5877ea8cdbe0d1c728fcc9aa4acc93ea0f5a1ed42e1ba6

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rs42ywcy.n3f.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
66KB

MD5
ef31568831a518038498d9b28b480d32

SHA1
c2eb7bc5ecbbaf64718173e292be672422976280

SHA256
88f85c8d4a6839845e8a021a5025d3d08630d92be2c0a49752865c5387c28f60

SHA512
ff2630e4e4401c4c89839caf575735b95f3d7b647236c2aea3c00eb8886a8adeae323a829aaa791deb0f3b14f71f22d7b2035c4f4e3162c9c607d3d6d3cafc34

Download Submit
memory/4056-21-0x00007FFD07550000-0x00007FFD08011000-memory.dmp

Filesize
10.8MB

Download
memory/4056-15-0x0000000000C70000-0x0000000000C86000-memory.dmp

Filesize
88KB

Download
memory/4056-75-0x000000001BA40000-0x000000001BA4C000-memory.dmp

Filesize
48KB

Download
memory/4056-76-0x00007FFD07553000-0x00007FFD07555000-memory.dmp

Filesize
8KB

Download
memory/4056-77-0x00007FFD07550000-0x00007FFD08011000-memory.dmp

Filesize
10.8MB

Download
memory/4056-13-0x00007FFD07553000-0x00007FFD07555000-memory.dmp

Filesize
8KB

Download
memory/4588-22-0x0000011CD83A0000-0x0000011CD83C2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads