xworm | d5a9a013320ba9ccda23abf7ad0e364193e3f7ba84554d4d70b8538084560b08

General

Target

.exe
Size

48KB
MD5

8855bf2042f8fb32e6b181832242a7e7
SHA1

933026bbb4c10bcef1e1d645ec4f30f3cc9d0525
SHA256

d5a9a013320ba9ccda23abf7ad0e364193e3f7ba84554d4d70b8538084560b08
SHA512

ffcc177442f1af324ffd92af71a86abd182f8698876f6ae05e932dc43598fd82322bcf1b3ef326ec0d2458b786472090e6c6520e6727e7db9c50da91358dfa71
SSDEEP

768:pivffaUlrlLGnaOL0k8LnooYsTUiWruIcO3QXdT7Bqfwx:pia+WaoRxTBWHCA

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

application-mess.gl.at.ply.gg:8848

Mutex

QO74sVclgUVzlyXQ

Attributes

Install_directory
%ProgramData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023ca3-9.dat	family_xworm
behavioral2/memory/1928-17-0x0000000000F10000-0x0000000000F20000-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
4416	powershell.exe
4868	powershell.exe
1824	powershell.exe
588	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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	XClient.exe

Executes dropped EXE 1 IoCs

pid	Process
1928	XClient.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\ProgramData\\XClient.exe"	XClient.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
588	powershell.exe
588	powershell.exe
4416	powershell.exe
4416	powershell.exe
4868	powershell.exe
4868	powershell.exe
1824	powershell.exe
1824	powershell.exe
1928	XClient.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1928	XClient.exe
Token: SeDebugPrivilege	588	powershell.exe
Token: SeDebugPrivilege	4416	powershell.exe
Token: SeDebugPrivilege	4868	powershell.exe
Token: SeDebugPrivilege	1824	powershell.exe
Token: SeDebugPrivilege	1928	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1928	XClient.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 3176	3064	.exe	84
PID 3064 wrote to memory of 3176	3064	.exe	84
PID 3064 wrote to memory of 1928	3064	.exe	86
PID 3064 wrote to memory of 1928	3064	.exe	86
PID 3176 wrote to memory of 3352	3176	cmd.exe	87
PID 3176 wrote to memory of 3352	3176	cmd.exe	87
PID 1928 wrote to memory of 588	1928	XClient.exe	91
PID 1928 wrote to memory of 588	1928	XClient.exe	91
PID 1928 wrote to memory of 4416	1928	XClient.exe	95
PID 1928 wrote to memory of 4416	1928	XClient.exe	95
PID 1928 wrote to memory of 4868	1928	XClient.exe	97
PID 1928 wrote to memory of 4868	1928	XClient.exe	97
PID 1928 wrote to memory of 1824	1928	XClient.exe	99
PID 1928 wrote to memory of 1824	1928	XClient.exe	99

C:\Users\Admin\AppData\Local\Temp\.exe
"C:\Users\Admin\AppData\Local\Temp\.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\tilox.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3176
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:3352
- C:\Users\Admin\AppData\Roaming\XClient.exe
  "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Checks computer location settings
  - 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:1928
- - 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\XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:588
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4416
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4868
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1824

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
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
e58749a7a1826f6ea62df1e2ef63a32b

SHA1
c0bca21658b8be4f37b71eec9578bfefa44f862d

SHA256
0e1f0e684adb40a5d0668df5fed007c9046137d7ae16a1f2f343b139d5f9bc93

SHA512
4cf45b2b11ab31e7f67fff286b29d50ed28cd6043091144c5c0f1348b5f5916ed7479cf985595e6f096b586ab93b4b5dce612f688049b8366a2dd91863e98b70

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fa5ez2em.lyu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
38KB

MD5
61f5c35f3d44c66758c41e80aa120df0

SHA1
31d83065eb4f30c1321ed717deeede0d181d6f9c

SHA256
a798b8d3494e70279dd61debeb3816b0f732ad7393b0b10c149c1becd72e5623

SHA512
05231e408327af615c751b5d1eb9f124883326a933fbf8ec076c35edb18cb39cf8a0aa0a2320f57cd42a49388d0021f91492f8f45cf5ea489de567ece87aee69

Download Submit
C:\Users\Admin\AppData\Roaming\tilox.bat

Filesize
65B

MD5
f14bef95f0b32676423586d7c07a5c3c

SHA1
a5865efc09bc7eada19532053553723dfdf5f995

SHA256
b6723ceece0204f3dd1334dfab91e4a141bf766d410be1de3c7c27b68450a6e6

SHA512
f3a33e86d02e612bc8976610ce762d654d5e91a934e979a3381ea370d007c6c8a15de72c6a44c4b54252cd505b364c98aab22a0db64573b819340601c92cb3e9

Download Submit
memory/588-20-0x00000246E95B0000-0x00000246E95D2000-memory.dmp

Filesize
136KB

Download
memory/1928-19-0x00007FFEB3CD0000-0x00007FFEB4791000-memory.dmp

Filesize
10.8MB

Download
memory/1928-17-0x0000000000F10000-0x0000000000F20000-memory.dmp

Filesize
64KB

Download
memory/1928-67-0x00007FFEB3CD0000-0x00007FFEB4791000-memory.dmp

Filesize
10.8MB

Download
memory/1928-68-0x00007FFEB3CD0000-0x00007FFEB4791000-memory.dmp

Filesize
10.8MB

Download
memory/1928-69-0x00007FFEB3CD0000-0x00007FFEB4791000-memory.dmp

Filesize
10.8MB

Download
memory/3064-0-0x00007FFEB3CD3000-0x00007FFEB3CD5000-memory.dmp

Filesize
8KB

Download
memory/3064-1-0x0000000000230000-0x0000000000242000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads