xworm | 234ea596c74a48e69cee880ce2bf83bfa7cc616220655726ee8e8e57b4fea1be

General

Target

safe.exe
Size

76KB
MD5

ad6bad60fc5ad8e7f7353e7b787bfb4d
SHA1

48f7a8a0c7f06e384cea2fafec62b41e1e5cd567
SHA256

234ea596c74a48e69cee880ce2bf83bfa7cc616220655726ee8e8e57b4fea1be
SHA512

e2a9aec9dae0649c3e84254c481a772a928da938d43970871770ca9e3d782b81584266fc7f192a82e20cbedab201a198c94173103883081ca356a4c3ed64283c
SSDEEP

1536:dNZaFIN/AGCqxzs+bi15FU6oK/1OU4tXGSKUkdS1EAd8IIp:dOFIN/LRFs+biRNOU4Jy9gEA6IIp

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

la-judgment.gl.at.ply.gg:62627

Attributes

Install_directory
%ProgramData%
install_file
update.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3628-1-0x00000000003D0000-0x00000000003E8000-memory.dmp	family_xworm
behavioral2/files/0x000800000001db59-59.dat	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
4656	powershell.exe
3736	powershell.exe
2060	powershell.exe
1276	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-1-5-21-2278412438-3475196406-3686434223-1000\Control Panel\International\Geo\Nation	safe.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
1472	update.exe
3096	update.exe
5044	update.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-1-5-21-2278412438-3475196406-3686434223-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\update = "C:\\ProgramData\\update.exe"	safe.exe

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
4100	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4656	powershell.exe
4656	powershell.exe
3736	powershell.exe
3736	powershell.exe
2060	powershell.exe
2060	powershell.exe
1276	powershell.exe
1276	powershell.exe
3628	safe.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	3628	safe.exe
Token: SeDebugPrivilege	4656	powershell.exe
Token: SeDebugPrivilege	3736	powershell.exe
Token: SeDebugPrivilege	2060	powershell.exe
Token: SeDebugPrivilege	1276	powershell.exe
Token: SeDebugPrivilege	3628	safe.exe
Token: SeDebugPrivilege	1472	update.exe
Token: SeDebugPrivilege	3096	update.exe
Token: SeDebugPrivilege	5044	update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3628	safe.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3628 wrote to memory of 4656	3628	safe.exe	91
PID 3628 wrote to memory of 4656	3628	safe.exe	91
PID 3628 wrote to memory of 3736	3628	safe.exe	95
PID 3628 wrote to memory of 3736	3628	safe.exe	95
PID 3628 wrote to memory of 2060	3628	safe.exe	97
PID 3628 wrote to memory of 2060	3628	safe.exe	97
PID 3628 wrote to memory of 1276	3628	safe.exe	99
PID 3628 wrote to memory of 1276	3628	safe.exe	99
PID 3628 wrote to memory of 4100	3628	safe.exe	101
PID 3628 wrote to memory of 4100	3628	safe.exe	101

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\safe.exe
"C:\Users\Admin\AppData\Local\Temp\safe.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3628
- 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\safe.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4656
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'safe.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3736
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2060
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1276
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "update" /tr "C:\ProgramData\update.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4100

C:\ProgramData\update.exe
C:\ProgramData\update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1472

C:\ProgramData\update.exe
C:\ProgramData\update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3096

C:\ProgramData\update.exe
C:\ProgramData\update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5044

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

Replay Monitor

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Downloads

C:\ProgramData\update.exe

Filesize
76KB

MD5
ad6bad60fc5ad8e7f7353e7b787bfb4d

SHA1
48f7a8a0c7f06e384cea2fafec62b41e1e5cd567

SHA256
234ea596c74a48e69cee880ce2bf83bfa7cc616220655726ee8e8e57b4fea1be

SHA512
e2a9aec9dae0649c3e84254c481a772a928da938d43970871770ca9e3d782b81584266fc7f192a82e20cbedab201a198c94173103883081ca356a4c3ed64283c

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\CLR_v4.0\UsageLogs\update.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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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
d0e7bfb4681451cccec5c17f2dda3bf6

SHA1
aadbce96e0694253d4acbf7232311abea5ce2e6b

SHA256
e864e1be368f08926997c9d5a271f45f7a7796f01fc79977eb19539c80f3b7ae

SHA512
6277098c0a3dbe8759ffe480a6f70dff4ac09d7b599847b25a8105f8d96c868157a6688fd160cca40282bb4b1649914063a8187efab291f98d576f33372cbbb0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w4tbfxde.w3t.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3628-56-0x00007FFFBED30000-0x00007FFFBF7F1000-memory.dmp

Filesize
10.8MB

Download
memory/3628-0-0x00007FFFBED33000-0x00007FFFBED35000-memory.dmp

Filesize
8KB

Download
memory/3628-57-0x00007FFFBED33000-0x00007FFFBED35000-memory.dmp

Filesize
8KB

Download
memory/3628-58-0x00007FFFBED30000-0x00007FFFBF7F1000-memory.dmp

Filesize
10.8MB

Download
memory/3628-1-0x00000000003D0000-0x00000000003E8000-memory.dmp

Filesize
96KB

Download
memory/4656-17-0x00007FFFBED30000-0x00007FFFBF7F1000-memory.dmp

Filesize
10.8MB

Download
memory/4656-14-0x00007FFFBED30000-0x00007FFFBF7F1000-memory.dmp

Filesize
10.8MB

Download
memory/4656-13-0x00007FFFBED30000-0x00007FFFBF7F1000-memory.dmp

Filesize
10.8MB

Download
memory/4656-12-0x00007FFFBED30000-0x00007FFFBF7F1000-memory.dmp

Filesize
10.8MB

Download
memory/4656-7-0x000001B47F790000-0x000001B47F7B2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads