xworm | ca847cd0a27fd89fc04c1a7972b9d1dcfcf9e9a7be35b21c2d36b4c9f0195bea

General

Target

DSDDDD.exe
Size

69KB
MD5

fa699362343846cc0cef79e11c156718
SHA1

9dc34285424c208a76d7324d76f1643c398d10f5
SHA256

ca847cd0a27fd89fc04c1a7972b9d1dcfcf9e9a7be35b21c2d36b4c9f0195bea
SHA512

56355dfa64fab11bb8d39a73a81217672cbb7a3b408897bdade6b6438ca556ff20f8e0147dcda8d408ddd6c636335d995b2ff129134766eb62ba29c947f242ae
SSDEEP

1536:ML9bRckOzKJXx/FG+Lg+i7Rjazb5C3ECm6ME+dOcGdFfgIl:k/cextGeSjazb5ohUtdOhpVl

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

support-effectiveness.gl.at.ply.gg:49376

Attributes

Install_directory
%AppData%
install_file
fortnite.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3988-1-0x0000000000510000-0x0000000000528000-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 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4792	powershell.exe
4524	powershell.exe
3872	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-1-5-21-2593460650-190333679-3676257533-1000\Control Panel\International\Geo\Nation	DSDDDD.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DSDDDD.lnk	DSDDDD.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DSDDDD.lnk	DSDDDD.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-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DSDDDD = "C:\\Users\\Admin\\AppData\\Roaming\\DSDDDD.exe"	DSDDDD.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

defense_evasion

pid	Process
1688	timeout.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
4792	powershell.exe
4792	powershell.exe
4792	powershell.exe
4524	powershell.exe
4524	powershell.exe
3872	powershell.exe
3872	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3988	DSDDDD.exe
Token: SeDebugPrivilege	4792	powershell.exe
Token: SeDebugPrivilege	4524	powershell.exe
Token: SeDebugPrivilege	3872	powershell.exe
Token: SeDebugPrivilege	3988	DSDDDD.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 4792	3988	DSDDDD.exe	95
PID 3988 wrote to memory of 4792	3988	DSDDDD.exe	95
PID 3988 wrote to memory of 4524	3988	DSDDDD.exe	97
PID 3988 wrote to memory of 4524	3988	DSDDDD.exe	97
PID 3988 wrote to memory of 3872	3988	DSDDDD.exe	99
PID 3988 wrote to memory of 3872	3988	DSDDDD.exe	99
PID 3988 wrote to memory of 3040	3988	DSDDDD.exe	115
PID 3988 wrote to memory of 3040	3988	DSDDDD.exe	115
PID 3040 wrote to memory of 1688	3040	cmd.exe	117
PID 3040 wrote to memory of 1688	3040	cmd.exe	117

C:\Users\Admin\AppData\Local\Temp\DSDDDD.exe
"C:\Users\Admin\AppData\Local\Temp\DSDDDD.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3988
- 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\DSDDDD.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4792
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'DSDDDD.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4524
- 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\DSDDDD.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3872
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpFFE7.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3040
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

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\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
46b170302a5821687d8c622f10947f27

SHA1
47a91ea3e248bd99dc87211be7e2844dda0687df

SHA256
e3cdd1b49dca63bf255aead7a7535cc6fc085425ff5ac48975d62c37af6a689e

SHA512
e6f9e562876591cb959d5650cf9ef1eb2a87d5a154bd5f8c37f6697c7fd48d959014bcb2aab96b9c41498a465e9d0f114be276514e2be59dcb019334e3dfe7cb

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5euuccq5.g5q.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpFFE7.tmp.bat

Filesize
158B

MD5
2640e60f09e225c833b12d0c168807b7

SHA1
238fa3c851186cbecbdfa6b335a84b5582162c1a

SHA256
086edb82d4c407bc5f58ff918637e6ca3101992569a0174ef90e02a0ae10e331

SHA512
c2501e0afc6a5b8f0627a96e33230b46e207370c6f697a5b27237146bd357cca83df9c2a2954964b92bd63d95bee4cadbbea38e52123e5ecf73b121c5be8c16e

Download Submit
memory/3988-48-0x00007FFF2FAF3000-0x00007FFF2FAF5000-memory.dmp

Filesize
8KB

Download
memory/3988-47-0x00007FFF2FAF0000-0x00007FFF305B1000-memory.dmp

Filesize
10.8MB

Download
memory/3988-0-0x00007FFF2FAF3000-0x00007FFF2FAF5000-memory.dmp

Filesize
8KB

Download
memory/3988-49-0x00007FFF2FAF0000-0x00007FFF305B1000-memory.dmp

Filesize
10.8MB

Download
memory/3988-1-0x0000000000510000-0x0000000000528000-memory.dmp

Filesize
96KB

Download
memory/3988-58-0x00007FFF2FAF0000-0x00007FFF305B1000-memory.dmp

Filesize
10.8MB

Download
memory/4792-14-0x00007FFF2FAF0000-0x00007FFF305B1000-memory.dmp

Filesize
10.8MB

Download
memory/4792-17-0x00007FFF2FAF0000-0x00007FFF305B1000-memory.dmp

Filesize
10.8MB

Download
memory/4792-13-0x00007FFF2FAF0000-0x00007FFF305B1000-memory.dmp

Filesize
10.8MB

Download
memory/4792-12-0x00007FFF2FAF0000-0x00007FFF305B1000-memory.dmp

Filesize
10.8MB

Download
memory/4792-7-0x000002B34D560000-0x000002B34D582000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads