xworm | 675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a

General

Target

675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe
Size

80KB
MD5

bb1529af37bcc44a4d65ee8da4ab05be
SHA1

2e0e4ddd78ff20ec2de8fb8993a0649cabfeedd2
SHA256

675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a
SHA512

2a8fb12264df2f6bdf272fa585e2b5b27829e9f96813a5d349da2a7c8348cd3eb9097f5d10f3320f1ab192041d0274cd2ac4c0d9bcd0d716e33f1dc6162baf7b
SSDEEP

1536:Gmc2zu/kU4Nl5jZnttCahWtrbazbwq6Kciw6VaZwYVg/VOZO6Kmi80:GmcT8UEntH4trbaYhKc8OZxK+0

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

82.147.85.135:7000

Attributes

Install_directory
%AppData%
install_file
svhost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/4688-1-0x00000000005F0000-0x000000000060A000-memory.dmp	family_xworm
behavioral1/files/0x000b000000023469-58.dat	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
1456	powershell.exe
2104	powershell.exe
3232	powershell.exe
408	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe

Executes dropped EXE 2 IoCs

pid	Process
4684	svhost.exe
64	svhost.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-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Roaming\\svhost.exe"	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.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
21	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

pid	Process
1124	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3232	powershell.exe
3232	powershell.exe
408	powershell.exe
408	powershell.exe
1456	powershell.exe
1456	powershell.exe
2104	powershell.exe
2104	powershell.exe
4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe
Token: SeDebugPrivilege	3232	powershell.exe
Token: SeDebugPrivilege	408	powershell.exe
Token: SeDebugPrivilege	1456	powershell.exe
Token: SeDebugPrivilege	2104	powershell.exe
Token: SeDebugPrivilege	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe
Token: SeDebugPrivilege	4684	svhost.exe
Token: SeDebugPrivilege	64	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4688 wrote to memory of 3232	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe	92
PID 4688 wrote to memory of 3232	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe	92
PID 4688 wrote to memory of 408	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe	94
PID 4688 wrote to memory of 408	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe	94
PID 4688 wrote to memory of 1456	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe	96
PID 4688 wrote to memory of 1456	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe	96
PID 4688 wrote to memory of 2104	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe	98
PID 4688 wrote to memory of 2104	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe	98
PID 4688 wrote to memory of 1124	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe	100
PID 4688 wrote to memory of 1124	4688	675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe	100

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\675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe
"C:\Users\Admin\AppData\Local\Temp\675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4688
- 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\675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3232
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:408
- 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\svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1456
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2104
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\Users\Admin\AppData\Roaming\svhost.exe"
  2⤵
  - Creates scheduled task(s)
  PID:1124

C:\Users\Admin\AppData\Roaming\svhost.exe
C:\Users\Admin\AppData\Roaming\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4684

C:\Users\Admin\AppData\Roaming\svhost.exe
C:\Users\Admin\AppData\Roaming\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:64

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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\svhost.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
98b94154d16e9d5da3f8a9dc577e94b7

SHA1
b25715beaa17b979b40e2333a92fecf0d36102e4

SHA256
ecd8be7e0a7478c0cbfd0f640c63344b3eb39588d371ac557bbbfbbc10c32c11

SHA512
236307667fa4deb98d1e7a89ceee906cb9f1b809bafd2b37cfc877142eb79646b65527bff492e39037fda3a2e55d07c10dfaa04101189c20a5ffea3d323d3589

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

Filesize
944B

MD5
7e3dba9896e2a6fc782ff3f38f7174a7

SHA1
a6277b46ae1cf2c66f6f79656eb5ec48c0ffe601

SHA256
34bf96a7a541eebcfd65e706649affeb64da710f89afa2386cc38714338c010d

SHA512
722c6778f5853fb8c12cb17ba443ce03b654d163dd39f8a1a54b89cc067d44dc8b536c90d2fae1805aea27e731056c0749264a1229538b1b17e019d9613affc1

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

Filesize
944B

MD5
10fb30dc297f99d6ebafa5fee8b24fa2

SHA1
76904509313a49a765edcde26b69c3a61f9fa225

SHA256
567bcacac120711fc04bf8e6c8cd0bff7b61e8ee0a6316254d1005ebb1264e6a

SHA512
c42ace1ea0923fa55592f4f486a508ea56997fdbe0200016b0fc16a33452fc28e4530129a315b3b3a5ede37a07097c13a0eb310c9e91e5d97bb7ce7b955b9498

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cnnvrjz3.dxk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
80KB

MD5
bb1529af37bcc44a4d65ee8da4ab05be

SHA1
2e0e4ddd78ff20ec2de8fb8993a0649cabfeedd2

SHA256
675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a

SHA512
2a8fb12264df2f6bdf272fa585e2b5b27829e9f96813a5d349da2a7c8348cd3eb9097f5d10f3320f1ab192041d0274cd2ac4c0d9bcd0d716e33f1dc6162baf7b

Download Submit
memory/3232-12-0x000002D5ADA00000-0x000002D5ADA22000-memory.dmp

Filesize
136KB

Download
memory/3232-18-0x00007FFD6EE60000-0x00007FFD6F921000-memory.dmp

Filesize
10.8MB

Download
memory/3232-15-0x00007FFD6EE60000-0x00007FFD6F921000-memory.dmp

Filesize
10.8MB

Download
memory/3232-14-0x00007FFD6EE60000-0x00007FFD6F921000-memory.dmp

Filesize
10.8MB

Download
memory/3232-13-0x00007FFD6EE60000-0x00007FFD6F921000-memory.dmp

Filesize
10.8MB

Download
memory/4688-0-0x00007FFD6EE63000-0x00007FFD6EE65000-memory.dmp

Filesize
8KB

Download
memory/4688-57-0x00007FFD6EE60000-0x00007FFD6F921000-memory.dmp

Filesize
10.8MB

Download
memory/4688-2-0x00007FFD6EE60000-0x00007FFD6F921000-memory.dmp

Filesize
10.8MB

Download
memory/4688-1-0x00000000005F0000-0x000000000060A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads