xworm | c2a9fefda9159dd2712510c1c9077a1885d0ebc45251285dad95ba7184b98856

General

Target

XwormLoader.exe
Size

7.9MB
MD5

5b757c6d0af650a77ba1bf7edea18b36
SHA1

c2ee4e12ff4b70511dbcab25dbf8b0d45f2d52b3
SHA256

c2a9fefda9159dd2712510c1c9077a1885d0ebc45251285dad95ba7184b98856
SHA512

93ca04887c63c3a0a4a5d42c48d0f4f7cc7fe7f6dad4dd45136ac048639d2edab66a2d2459779b9a2a075fa8981ea40567b34e5ed0535c1deecfe5e838385960
SSDEEP

196608:T7b4C6XrL5HfZBEhl3xZi5OslC9+PWbXooVl41u1mMFsr5:T7yvRZBEP3xZi5Oso+PWbXooL4Sa

Score

10^/10

Malware Config

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b62-12.dat	family_xworm
behavioral2/memory/4388-21-0x0000000000800000-0x000000000082A000-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
2560	powershell.exe
4248	powershell.exe
3492	powershell.exe
972	powershell.exe

.NET Reactor proctector 2 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral2/files/0x000d000000023b62-12.dat	net_reactor
behavioral2/memory/4388-21-0x0000000000800000-0x000000000082A000-memory.dmp	net_reactor

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	XwormLoader.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
4388	svchost.exe
2384	Xworm V5.6.exe
2520	svchost.exe
2976	svchost.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1412	timeout.exe

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
4720	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4388	svchost.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2560	powershell.exe
2560	powershell.exe
2560	powershell.exe
3492	powershell.exe
3492	powershell.exe
3492	powershell.exe
972	powershell.exe
972	powershell.exe
972	powershell.exe
4388	svchost.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	636	XwormLoader.exe
Token: SeDebugPrivilege	4388	svchost.exe
Token: SeDebugPrivilege	2560	powershell.exe
Token: SeDebugPrivilege	3492	powershell.exe
Token: SeDebugPrivilege	972	powershell.exe
Token: SeDebugPrivilege	2520	svchost.exe
Token: SeDebugPrivilege	2976	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4388	svchost.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 636 wrote to memory of 4388	636	XwormLoader.exe	92
PID 636 wrote to memory of 4388	636	XwormLoader.exe	92
PID 636 wrote to memory of 2384	636	XwormLoader.exe	93
PID 636 wrote to memory of 2384	636	XwormLoader.exe	93
PID 636 wrote to memory of 4720	636	XwormLoader.exe	94
PID 636 wrote to memory of 4720	636	XwormLoader.exe	94
PID 4720 wrote to memory of 1412	4720	cmd.exe	97
PID 4720 wrote to memory of 1412	4720	cmd.exe	97
PID 4388 wrote to memory of 2560	4388	svchost.exe	98
PID 4388 wrote to memory of 2560	4388	svchost.exe	98
PID 4388 wrote to memory of 4248	4388	svchost.exe	105
PID 4388 wrote to memory of 4248	4388	svchost.exe	105
PID 4388 wrote to memory of 3492	4388	svchost.exe	107
PID 4388 wrote to memory of 3492	4388	svchost.exe	107
PID 4388 wrote to memory of 972	4388	svchost.exe	109
PID 4388 wrote to memory of 972	4388	svchost.exe	109
PID 4388 wrote to memory of 4720	4388	svchost.exe	111
PID 4388 wrote to memory of 4720	4388	svchost.exe	111

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\XwormLoader.exe
"C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:636
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4388
- - 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\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2560
- - 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
    PID:4248
- - 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'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3492
- - 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:972
- - 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"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4720
- C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe
  "C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe"
  2⤵
  - Executes dropped EXE
  PID:2384
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBD74.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4720
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1412

C:\ProgramData\svchost.exe
C:\ProgramData\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2520

C:\ProgramData\svchost.exe
C:\ProgramData\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2976

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

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

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
22310ad6749d8cc38284aa616efcd100

SHA1
440ef4a0a53bfa7c83fe84326a1dff4326dcb515

SHA256
55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

SHA512
2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

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

Filesize
944B

MD5
98baf5117c4fcec1692067d200c58ab3

SHA1
5b33a57b72141e7508b615e17fb621612cb8e390

SHA256
30bf8496e9a08f4fdfe4767abcd565f92b6da06ca1c7823a70cb7cab16262e51

SHA512
344a70bfc037d54176f12db91f05bf4295bb587a5062fd1febe6f52853571170bd8ef6042cb87b893185bbae1937cf77b679d7970f8cc1c2666b0b7c1b32987d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe

Filesize
14.9MB

MD5
db51a102eab752762748a2dec8f7f67a

SHA1
194688ec1511b83063f7b0167ae250764b7591d1

SHA256
93e5e7f018053c445c521b010caff89e61f61743635db3500aad32d6e495abb2

SHA512
fb2fb6605a17fedb65e636cf3716568e85b8ea423c23e0513eb87f3a3441e2cabc4c3e6346225a9bf7b81e97470f3ab516feea649a7afb5cdf02faff8d7f09a5

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kipj2pzn.4tx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
144KB

MD5
4b90399888a12fb85ccc3d0190d5a1d3

SHA1
3326c027bac28b9480b0c7f621481a6cc033db4e

SHA256
cede03d0ef98d200bd5b68f6ca4e0d74e2a62fc430a38083663c3031dbb1c77f

SHA512
899ec2df2f5d70716ad5d0686bfe0a6c66ccbcf7f0485efbdfc0615f90b3526cd3d31069fa66c7c6ae8bba6ce92200836c50da40a3731888b7326b970d93216a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBD74.tmp.bat

Filesize
163B

MD5
ee48d0ce71bb6ddbdc7929cf27228554

SHA1
6bfeab32ca6bf73a81cd6b1022e1816f5c942623

SHA256
0e28a1fdef537d2dfef6578173a75a967efe2305a31a37161a982b26be9c65e7

SHA512
6a1194725b572a8d68f81c28c44e45701e306b4daa048ecd45d738569e68ac40876a49893a1f8ef838934eaa637d3c3a9dc83294daef1e308a667c2070fe547d

Download Submit
memory/636-35-0x000000001EC10000-0x000000001F0DE000-memory.dmp

Filesize
4.8MB

Download
memory/636-3-0x00007FF92FA40000-0x00007FF9303E1000-memory.dmp

Filesize
9.6MB

Download
memory/636-1-0x00007FF92FA40000-0x00007FF9303E1000-memory.dmp

Filesize
9.6MB

Download
memory/636-9-0x00007FF92FA40000-0x00007FF9303E1000-memory.dmp

Filesize
9.6MB

Download
memory/636-30-0x00007FF92FCF5000-0x00007FF92FCF6000-memory.dmp

Filesize
4KB

Download
memory/636-31-0x00007FF92FA40000-0x00007FF9303E1000-memory.dmp

Filesize
9.6MB

Download
memory/636-0-0x00007FF92FCF5000-0x00007FF92FCF6000-memory.dmp

Filesize
4KB

Download
memory/636-2-0x00007FF92FA40000-0x00007FF9303E1000-memory.dmp

Filesize
9.6MB

Download
memory/636-41-0x00007FF92FA40000-0x00007FF9303E1000-memory.dmp

Filesize
9.6MB

Download
memory/636-8-0x00007FF92FA40000-0x00007FF9303E1000-memory.dmp

Filesize
9.6MB

Download
memory/636-4-0x000000001BFB0000-0x000000001C056000-memory.dmp

Filesize
664KB

Download
memory/636-5-0x00007FF92FA40000-0x00007FF9303E1000-memory.dmp

Filesize
9.6MB

Download
memory/972-81-0x000002177AF30000-0x000002177B07E000-memory.dmp

Filesize
1.3MB

Download
memory/2384-56-0x00007FF92C160000-0x00007FF92CC21000-memory.dmp

Filesize
10.8MB

Download
memory/2384-39-0x0000029217150000-0x0000029218038000-memory.dmp

Filesize
14.9MB

Download
memory/2384-40-0x00007FF92C160000-0x00007FF92CC21000-memory.dmp

Filesize
10.8MB

Download
memory/2560-48-0x000001D3FC210000-0x000001D3FC232000-memory.dmp

Filesize
136KB

Download
memory/2560-55-0x000001D3FC340000-0x000001D3FC48E000-memory.dmp

Filesize
1.3MB

Download
memory/3492-69-0x0000022169600000-0x000002216974E000-memory.dmp

Filesize
1.3MB

Download
memory/4388-20-0x00007FF92C163000-0x00007FF92C165000-memory.dmp

Filesize
8KB

Download
memory/4388-83-0x00007FF92C163000-0x00007FF92C165000-memory.dmp

Filesize
8KB

Download
memory/4388-21-0x0000000000800000-0x000000000082A000-memory.dmp

Filesize
168KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads