xworm | 1446224da9810c06e7336730dab3811c39c8d1d4b200c4e7d568b1440b432f61

General

Target

VelocitySupportTool1.exe
Size

250KB
MD5

1904b43012a89c4ec5b3c82c7f7e313e
SHA1

3b0eedb1ba0bff205b9d099dd355091229007d04
SHA256

1446224da9810c06e7336730dab3811c39c8d1d4b200c4e7d568b1440b432f61
SHA512

c37e6bba9776516201c28367dcb541ac108a1def13d72eaf311800710c854a794835b7b92075e3b5d61ff3c500e1446004479065e418e3cb0dfb41963123a06e
SSDEEP

3072:0AgVT/y+i3B0ELNv4TW+gLdLY/rxlfP3JIxlR6d0HoG1Bz65/M6If+3Js+3JFkKf:MT/cCTOLoP3JClR6CIG1xBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%port%
install_file
USB.exe
pastebin_url
https://pastebin.com/raw/k7RJ4RZQ

Extracted

Family

xworm

Version

5.0

Mutex

0PPzuWGEdxzyPz40

Attributes

Install_directory
%AppData%
install_file
svchost.exe
pastebin_url
https://pastebin.com/raw/0AT3JnEx

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023c1a-6.dat	family_xworm
behavioral2/files/0x0008000000023d0c-19.dat	family_xworm
behavioral2/memory/4552-27-0x00000000000E0000-0x0000000000100000-memory.dmp	family_xworm
behavioral2/memory/316-28-0x0000000000170000-0x0000000000180000-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
3012	powershell.exe
448	powershell.exe
2256	powershell.exe
4380	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-1-5-21-22591836-1183090055-1220658180-1000\Control Panel\International\Geo\Nation	VelocitySupportTool1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Control Panel\International\Geo\Nation	VelocityFix.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 5 IoCs

pid	Process
4552	VelocitySupportTools.exe
316	VelocityFix.exe
3472	svchost.exe
1236	svchost.exe
3252	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-1-5-21-22591836-1183090055-1220658180-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	VelocityFix.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
28	pastebin.com
29	pastebin.com

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
10	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
4972	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3012	powershell.exe
3012	powershell.exe
448	powershell.exe
448	powershell.exe
2256	powershell.exe
2256	powershell.exe
4380	powershell.exe
4380	powershell.exe
316	VelocityFix.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	4552	VelocitySupportTools.exe
Token: SeDebugPrivilege	316	VelocityFix.exe
Token: SeDebugPrivilege	3012	powershell.exe
Token: SeDebugPrivilege	448	powershell.exe
Token: SeDebugPrivilege	2256	powershell.exe
Token: SeDebugPrivilege	4380	powershell.exe
Token: SeDebugPrivilege	316	VelocityFix.exe
Token: SeDebugPrivilege	3472	svchost.exe
Token: SeDebugPrivilege	1236	svchost.exe
Token: SeDebugPrivilege	3252	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
316	VelocityFix.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1012 wrote to memory of 4552	1012	VelocitySupportTool1.exe	85
PID 1012 wrote to memory of 4552	1012	VelocitySupportTool1.exe	85
PID 1012 wrote to memory of 316	1012	VelocitySupportTool1.exe	86
PID 1012 wrote to memory of 316	1012	VelocitySupportTool1.exe	86
PID 316 wrote to memory of 3012	316	VelocityFix.exe	93
PID 316 wrote to memory of 3012	316	VelocityFix.exe	93
PID 316 wrote to memory of 448	316	VelocityFix.exe	97
PID 316 wrote to memory of 448	316	VelocityFix.exe	97
PID 316 wrote to memory of 2256	316	VelocityFix.exe	99
PID 316 wrote to memory of 2256	316	VelocityFix.exe	99
PID 316 wrote to memory of 4380	316	VelocityFix.exe	101
PID 316 wrote to memory of 4380	316	VelocityFix.exe	101
PID 316 wrote to memory of 4972	316	VelocityFix.exe	104
PID 316 wrote to memory of 4972	316	VelocityFix.exe	104

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\VelocitySupportTool1.exe
"C:\Users\Admin\AppData\Local\Temp\VelocitySupportTool1.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1012
- C:\Users\Admin\AppData\Roaming\VelocitySupportTools.exe
  "C:\Users\Admin\AppData\Roaming\VelocitySupportTools.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4552
- C:\Users\Admin\AppData\Roaming\VelocityFix.exe
  "C:\Users\Admin\AppData\Roaming\VelocityFix.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:316
- - 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\VelocityFix.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3012
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'VelocityFix.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:448
- - 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:2256
- - 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:4380
- - 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:4972

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3472

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1236

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3252

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

Web Service

1

T1102

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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
68c29e8d23a2bd3daa0a59e9c8f136d5

SHA1
bb900db2a641045ff97d25f51edb28a05a1a88ce

SHA256
e94ff41860d8fdc3603018f4142b8f3384687cc2e3aea05618205255eb35054d

SHA512
1ce67a93d5535c27c18697537abf40b8d6269347d6a611cb3bf7793b0a437a98f67e7e8f087fa59d77d71b174b3fcb5265685a65c0c96628bbbce3f09397cc11

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sv4yl4me.oxu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
39KB

MD5
53bfc0f8986b70724e4823f47241f6aa

SHA1
62e79122cea2f27e6f093fa484e5aa7795088ccc

SHA256
9286f18acfd1a8277f23da9a1079b571587c9bd5f28dbcff51845b933595426c

SHA512
5abbfbcc2e5cff491f4d213f4b83047f50e1de77d67631d510c7b540965c5f03a7611a0f1e79479d3a05a1e2f05fee6180b47ececc96c78f2e38ee5fa06430f2

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

Filesize
103KB

MD5
3d47fe184f91ceb1bd0d4c213da5ebfa

SHA1
05ca3411a2b89f0c7884024f48b51e7574862992

SHA256
f0879c8017351b9cebbb546ea14f323ddb777cd97e435bb2de904ac28aa8525f

SHA512
1975ed404e30d674806a8209982cf5c81ec7b057178e5597195ca89d79406ddc1edcd25a3e6098e74ac5ce220e9a9975cb2bcbff4d2de8abfa7952c1902ff256

Download Submit
memory/316-28-0x0000000000170000-0x0000000000180000-memory.dmp

Filesize
64KB

Download
memory/316-30-0x00007FFEA0010000-0x00007FFEA0AD1000-memory.dmp

Filesize
10.8MB

Download
memory/316-83-0x00007FFEA0010000-0x00007FFEA0AD1000-memory.dmp

Filesize
10.8MB

Download
memory/316-84-0x00007FFEA0010000-0x00007FFEA0AD1000-memory.dmp

Filesize
10.8MB

Download
memory/316-87-0x00007FFEA0010000-0x00007FFEA0AD1000-memory.dmp

Filesize
10.8MB

Download
memory/1012-0-0x00007FFEA0013000-0x00007FFEA0015000-memory.dmp

Filesize
8KB

Download
memory/1012-1-0x0000000000840000-0x0000000000884000-memory.dmp

Filesize
272KB

Download
memory/3012-42-0x00000224E15E0000-0x00000224E1602000-memory.dmp

Filesize
136KB

Download
memory/4552-32-0x00007FFEA0010000-0x00007FFEA0AD1000-memory.dmp

Filesize
10.8MB

Download
memory/4552-29-0x00007FFEA0010000-0x00007FFEA0AD1000-memory.dmp

Filesize
10.8MB

Download
memory/4552-27-0x00000000000E0000-0x0000000000100000-memory.dmp

Filesize
128KB

Download
memory/4552-31-0x00007FFEA0010000-0x00007FFEA0AD1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads