xworm | 20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e

General

Target

20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe
Size

42KB
MD5

b1c9c7a5e1f914ce0094aa08046015dc
SHA1

31299c6babfb89124cd60169e7429dc9566af8dd
SHA256

20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e
SHA512

3c287c3ea393cab841ee91f715d1cb6bac0c762eb7fa9a1bea838ac02e65a7beb929e3fe5b7c0d7c3312177fc589085496900c6e2aa68372ecba38573f5feed5
SSDEEP

768:EqpDpHTSWG3J9E/B0oZ4XVGCqF3t9bd6UOChvIPkV:E+DV+BI/2oZ4XV4F99bd6UOClGkV

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

gay-nursery.gl.at.ply.gg:51408

Mutex

v9Zf3WMcQnnzzZmX

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3552-1-0x00000000005A0000-0x00000000005B0000-memory.dmp	family_xworm
behavioral2/files/0x0010000000023a4c-56.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
2424	powershell.exe
3228	powershell.exe
4848	powershell.exe
2796	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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe

Executes dropped EXE 1 IoCs

pid	Process
3352	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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.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
1168	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2424	powershell.exe
2424	powershell.exe
3228	powershell.exe
3228	powershell.exe
4848	powershell.exe
4848	powershell.exe
2796	powershell.exe
2796	powershell.exe
3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe
Token: SeDebugPrivilege	2424	powershell.exe
Token: SeDebugPrivilege	3228	powershell.exe
Token: SeDebugPrivilege	4848	powershell.exe
Token: SeDebugPrivilege	2796	powershell.exe
Token: SeDebugPrivilege	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe
Token: SeDebugPrivilege	3352	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3552 wrote to memory of 2424	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe	89
PID 3552 wrote to memory of 2424	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe	89
PID 3552 wrote to memory of 3228	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe	93
PID 3552 wrote to memory of 3228	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe	93
PID 3552 wrote to memory of 4848	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe	95
PID 3552 wrote to memory of 4848	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe	95
PID 3552 wrote to memory of 2796	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe	97
PID 3552 wrote to memory of 2796	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe	97
PID 3552 wrote to memory of 1168	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe	100
PID 3552 wrote to memory of 1168	3552	20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe	100

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\20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe
"C:\Users\Admin\AppData\Local\Temp\20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3552
- 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\20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2424
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3228
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4848
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2796
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1168

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3352

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\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
abbef304406d4b5df9c7083877f95391

SHA1
524c4afc759e189b85c34a2a311cf3e2a7f9f8ff

SHA256
583c572f505437c3d504962c62b5f02075e9956f75d6427e20f81ebc78b1416c

SHA512
ef052cd6368cc7a12f8f5afc54d8bb20d7c2b4c08bae5014624bce46a411185dfd50e5d0dc5603b7f2eb492c7adc9b943068269d4c10a9fa7ab890ff0957177d

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

Filesize
944B

MD5
e3161f4edbc9b963debe22e29658050b

SHA1
45dbf88dadafe5dd1cfee1e987c8a219d3208cdb

SHA256
1359d6daeaed2f254b162914203c891b23139cc236a3bf75c2dfcbe26265c84a

SHA512
006ffb8f37d1f77f8ee79b22ffa413819f565d62773c632b70985759572121c6ab4743139d16d885f8c0ff9d0e0b136686741728b3e142ee54aea3bb733dffb2

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3tvs112y.alb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
42KB

MD5
b1c9c7a5e1f914ce0094aa08046015dc

SHA1
31299c6babfb89124cd60169e7429dc9566af8dd

SHA256
20b9dd6d08f23de84f317c3a1e270a8f952778d7a477b661fb820e078adbe07e

SHA512
3c287c3ea393cab841ee91f715d1cb6bac0c762eb7fa9a1bea838ac02e65a7beb929e3fe5b7c0d7c3312177fc589085496900c6e2aa68372ecba38573f5feed5

Download Submit
memory/2424-12-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/2424-17-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/2424-14-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/2424-13-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/2424-7-0x000002A4C1EB0000-0x000002A4C1ED2000-memory.dmp

Filesize
136KB

Download
memory/3552-0-0x00007FFF703D3000-0x00007FFF703D5000-memory.dmp

Filesize
8KB

Download
memory/3552-53-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/3552-54-0x00007FFF703D3000-0x00007FFF703D5000-memory.dmp

Filesize
8KB

Download
memory/3552-55-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/3552-1-0x00000000005A0000-0x00000000005B0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads