xworm | eecf872218af1a28c765063a4d046199aefb77b59258447b3382fd81a502f11b

General

Target

Output.exe
Size

3.0MB
MD5

696ea7e1c266ab9fe67d8f2b323ad92c
SHA1

f0c16438b8df7e84bd6b638cab55409e7fd6c254
SHA256

eecf872218af1a28c765063a4d046199aefb77b59258447b3382fd81a502f11b
SHA512

370c05a684e8df03077b71a3fe68765d360daef0f1785f612082a3554f4045961a94a195634e31b22060c8251b1abd4230418fcad06d4dc8531e935756389be6
SSDEEP

49152:mvWsXzaGD+PEyYTeH9+0xlE6w0svsGL2Azabr4Gh596Us7yMIGointpKVWg9+Kn8:ia/PEyuR0xbwNCVHH9intMlVO77

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:36623

fax-scenarios.gl.at.ply.gg:36623

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x001100000001ee75-6.dat	family_xworm
behavioral1/memory/4568-21-0x0000000000590000-0x00000000005AA000-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
1740	powershell.exe
4304	powershell.exe
2356	powershell.exe
2012	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-1-5-21-925314154-1797147466-1467878628-1000\Control Panel\International\Geo\Nation	Output.exe
Key value queried	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\Control Panel\International\Geo\Nation	XSolara.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 5 IoCs

pid	Process
4568	XSolara.exe
4648	BootstrapperNew.exe
3536	svchost.exe
3648	svchost.exe
1992	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-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XSolara.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
968	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1740	powershell.exe
1740	powershell.exe
4304	powershell.exe
4304	powershell.exe
2356	powershell.exe
2356	powershell.exe
2012	powershell.exe
2012	powershell.exe
2012	powershell.exe
4568	XSolara.exe
4568	XSolara.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4568	XSolara.exe
Token: SeDebugPrivilege	1740	powershell.exe
Token: SeDebugPrivilege	4304	powershell.exe
Token: SeDebugPrivilege	2356	powershell.exe
Token: SeDebugPrivilege	2012	powershell.exe
Token: SeDebugPrivilege	4568	XSolara.exe
Token: SeDebugPrivilege	3536	svchost.exe
Token: SeDebugPrivilege	3648	svchost.exe
Token: SeDebugPrivilege	1992	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4568	XSolara.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 4568	2172	Output.exe	87
PID 2172 wrote to memory of 4568	2172	Output.exe	87
PID 2172 wrote to memory of 4648	2172	Output.exe	88
PID 2172 wrote to memory of 4648	2172	Output.exe	88
PID 4568 wrote to memory of 1740	4568	XSolara.exe	91
PID 4568 wrote to memory of 1740	4568	XSolara.exe	91
PID 4568 wrote to memory of 4304	4568	XSolara.exe	93
PID 4568 wrote to memory of 4304	4568	XSolara.exe	93
PID 4568 wrote to memory of 2356	4568	XSolara.exe	96
PID 4568 wrote to memory of 2356	4568	XSolara.exe	96
PID 4568 wrote to memory of 2012	4568	XSolara.exe	100
PID 4568 wrote to memory of 2012	4568	XSolara.exe	100
PID 4568 wrote to memory of 968	4568	XSolara.exe	102
PID 4568 wrote to memory of 968	4568	XSolara.exe	102

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\Output.exe
"C:\Users\Admin\AppData\Local\Temp\Output.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Users\Admin\AppData\Local\Temp\XSolara.exe
  "C:\Users\Admin\AppData\Local\Temp\XSolara.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:4568
- - 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\XSolara.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1740
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XSolara.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4304
- - 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:2356
- - 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:2012
- - 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:968
- C:\Users\Admin\AppData\Local\Temp\BootstrapperNew.exe
  "C:\Users\Admin\AppData\Local\Temp\BootstrapperNew.exe"
  2⤵
  - Executes dropped EXE
  PID:4648

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3536

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3648

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1992

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

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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
3a6bad9528f8e23fb5c77fbd81fa28e8

SHA1
f127317c3bc6407f536c0f0600dcbcf1aabfba36

SHA256
986366767de5873f1b170a63f2a33ce05132d1afd90c8f5017afbca8ef1beb05

SHA512
846002154a0ece6f3e9feda6f115d3161dc21b3789525dd62ae1d9188495171293efdbe7be4710666dd8a15e66b557315b5a02918a741ed1d5f3ff0c515b98e2

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

Filesize
944B

MD5
3072fa0040b347c3941144486bf30c6f

SHA1
e6dc84a5bd882198583653592f17af1bf8cbfc68

SHA256
da8b533f81b342503c109e46b081b5c5296fdad5481f93fe5cc648e49ca6238e

SHA512
62df0eed621fe8ec340887a03d26b125429025c14ddcdfef82cb78ce1c9c6110c1d51ff0e423754d7966b6251363bf92833970eaf67707f8dd62e1549a79536c

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

Filesize
944B

MD5
3db1c0d23daacf01eb99125ccc2787d3

SHA1
0849528de1ba411279231d635d8f39d54cc829d2

SHA256
bceb96f5c3d31447980eb8cd891bba75b3e5b6eb60abf4d829fc13cd8faf2582

SHA512
3d84635a3395bca1d91ce182ccfb9e38c8da87ad678704673a72d580e4251cedc5a6b2a89040a172a5687b67952e74a13673bd115bce7bdabaed06f89323de5b

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

Filesize
2.9MB

MD5
f227cdfd423b3cc03bb69c49babf4da3

SHA1
3db5a97d9b0f2545e7ba97026af6c28512200441

SHA256
cb5d6c1ca0aa6232a2d55e14b20ac4a9945a0bd063c57d60a5ed3ae94160e3e8

SHA512
b10afd03b02a928545c16fad39a6ae46b68b1e1a2477a6990803ce80008e7161fb2ebc9380ba15a1b074bb436aa34bcd6c94a922933d438b1c22489717e1e10e

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

Filesize
80KB

MD5
4e2259c692b3397886fc6c0d95c687d9

SHA1
b93dbb5540b3eddade7bedeb544041f28667c49b

SHA256
2a6cdf93a46ea5b77e24236ab48b746ab54bb946caeb1e577fd261f6574b69e6

SHA512
31dcac575d559339aa81df57f65e00f94379a4bbe36f4e6dad9391aee682272046ec6c501a4b802d18c17da299501636945274f78b2b9f4bd33acf7feb476015

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gago2dm0.pal.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1740-52-0x00000202487E0000-0x0000020248802000-memory.dmp

Filesize
136KB

Download
memory/2172-0-0x00007FFFC9613000-0x00007FFFC9615000-memory.dmp

Filesize
8KB

Download
memory/2172-1-0x0000000000140000-0x000000000043C000-memory.dmp

Filesize
3.0MB

Download
memory/4568-93-0x00007FFFC9610000-0x00007FFFCA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/4568-94-0x00007FFFC9610000-0x00007FFFCA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/4568-100-0x00007FFFC9610000-0x00007FFFCA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/4568-25-0x00007FFFC9610000-0x00007FFFCA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/4568-21-0x0000000000590000-0x00000000005AA000-memory.dmp

Filesize
104KB

Download
memory/4648-29-0x0000017F621F0000-0x0000017F62200000-memory.dmp

Filesize
64KB

Download
memory/4648-34-0x0000017F013D0000-0x0000017F014D0000-memory.dmp

Filesize
1024KB

Download
memory/4648-41-0x0000017F7FF10000-0x0000017F7FF18000-memory.dmp

Filesize
32KB

Download
memory/4648-36-0x0000017F014D0000-0x0000017F014F6000-memory.dmp

Filesize
152KB

Download
memory/4648-32-0x0000017F7FF40000-0x0000017F7FF78000-memory.dmp

Filesize
224KB

Download
memory/4648-38-0x0000017F01510000-0x0000017F01526000-memory.dmp

Filesize
88KB

Download
memory/4648-39-0x0000017F005C0000-0x0000017F005CA000-memory.dmp

Filesize
40KB

Download
memory/4648-37-0x0000017F01500000-0x0000017F01508000-memory.dmp

Filesize
32KB

Download
memory/4648-35-0x0000017F005A0000-0x0000017F005AA000-memory.dmp

Filesize
40KB

Download
memory/4648-40-0x0000017F005B0000-0x0000017F005BA000-memory.dmp

Filesize
40KB

Download
memory/4648-33-0x0000017F7FF00000-0x0000017F7FF0E000-memory.dmp

Filesize
56KB

Download
memory/4648-31-0x00007FFFC9610000-0x00007FFFCA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/4648-30-0x0000017F7FEF0000-0x0000017F7FEF8000-memory.dmp

Filesize
32KB

Download
memory/4648-95-0x00007FFFC9610000-0x00007FFFCA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/4648-96-0x00007FFFC9610000-0x00007FFFCA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/4648-27-0x0000017F60390000-0x0000017F60672000-memory.dmp

Filesize
2.9MB

Download
memory/4648-28-0x00007FFFC9610000-0x00007FFFCA0D1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads