xworm | b21970eb9efd571d0244356f6b6a96a612527e20b416747e8572c52d30ea5b57

General

Target

7.exe
Size

302KB
MD5

ad169b56eca575c76b5c8662eaafe750
SHA1

8856d6a0532b62af6e6f8e1f6d86bb9433ea12d2
SHA256

b21970eb9efd571d0244356f6b6a96a612527e20b416747e8572c52d30ea5b57
SHA512

cb12c03c6f37e4853349f59470caf763c21dea36d189fb46a85178779df844f6e057080c5804b6441e3a7fbcc881bf60972a88d335a0db5d4fed0997bed5387b
SSDEEP

1536:AQPS0VyRe/kqne5mcDf2c+oH5FlZn2AniQuLvyQIs+oitUKw71nztWGlSBSdkxLZ:AZ0dcEhPorlFeVABf9vtrjxlDE4

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

feb-arrested.gl.at.ply.gg:17830

Attributes

Install_directory
%Temp%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023ca1-6.dat	family_xworm
behavioral2/memory/1512-15-0x0000000000A60000-0x0000000000A94000-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
4576	powershell.exe
3756	powershell.exe
4512	powershell.exe
4668	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	7.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	Cloud.exe

Executes dropped EXE 2 IoCs

pid	Process
1512	Cloud.exe
3708	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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe"	Cloud.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
7	ip-api.com

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
3184	timeout.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings	7.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings	OpenWith.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
3324	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1512	Cloud.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4668	powershell.exe
4668	powershell.exe
4576	powershell.exe
4576	powershell.exe
3756	powershell.exe
3756	powershell.exe
4512	powershell.exe
4512	powershell.exe
1512	Cloud.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1512	Cloud.exe
Token: SeDebugPrivilege	4668	powershell.exe
Token: SeDebugPrivilege	4576	powershell.exe
Token: SeDebugPrivilege	3756	powershell.exe
Token: SeDebugPrivilege	4512	powershell.exe
Token: SeDebugPrivilege	1512	Cloud.exe
Token: SeDebugPrivilege	3708	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3476	OpenWith.exe
1512	Cloud.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 1512	1936	7.exe	83
PID 1936 wrote to memory of 1512	1936	7.exe	83
PID 1512 wrote to memory of 4668	1512	Cloud.exe	89
PID 1512 wrote to memory of 4668	1512	Cloud.exe	89
PID 1512 wrote to memory of 4576	1512	Cloud.exe	91
PID 1512 wrote to memory of 4576	1512	Cloud.exe	91
PID 1512 wrote to memory of 3756	1512	Cloud.exe	93
PID 1512 wrote to memory of 3756	1512	Cloud.exe	93
PID 1512 wrote to memory of 4512	1512	Cloud.exe	95
PID 1512 wrote to memory of 4512	1512	Cloud.exe	95
PID 1512 wrote to memory of 3324	1512	Cloud.exe	97
PID 1512 wrote to memory of 3324	1512	Cloud.exe	97
PID 1512 wrote to memory of 2288	1512	Cloud.exe	115
PID 1512 wrote to memory of 2288	1512	Cloud.exe	115
PID 1512 wrote to memory of 3120	1512	Cloud.exe	117
PID 1512 wrote to memory of 3120	1512	Cloud.exe	117
PID 3120 wrote to memory of 3184	3120	cmd.exe	119
PID 3120 wrote to memory of 3184	3120	cmd.exe	119

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\7.exe
"C:\Users\Admin\AppData\Local\Temp\7.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Users\Admin\AppData\Roaming\Cloud.exe
  "C:\Users\Admin\AppData\Roaming\Cloud.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - 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:1512
- - 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\Cloud.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4668
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Cloud.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4576
- - 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:3756
- - 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:4512
- - 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\Local\Temp\svchost.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3324
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /delete /f /tn "svchost"
    3⤵
    PID:2288
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE9AF.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3120
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:3184

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:3476

C:\Users\Admin\AppData\Local\Temp\svchost.exe
C:\Users\Admin\AppData\Local\Temp\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3708

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

Replay Monitor

Loading Replay Monitor...

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
b1a1d8b05525b7b0c5babfd80488c1f2

SHA1
c85bbd6b7d0143676916c20fd52720499c2bb5c6

SHA256
adad192fc86c2f939fd3f70cb9ad323139a4e100f7c90b4454e2c53bdbc9b705

SHA512
346c6513c1373bab58439e37d3f75de1c5c587d7eb27076cf696e885a027b3b38d70b585839d1a2e7f2270cdcf0dac8c1fdff799f3b1158242ae9e3364c2a06e

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

Filesize
944B

MD5
51cf8df21f531e31f7740b4ec487a48a

SHA1
40c6a73b22d71625a62df109aefc92a5f9b9d13e

SHA256
263d9b98a897d1d66da4832af640c4bf5ab0ae91125ba12243453dfe714f3d0d

SHA512
57a85461f6ea96b26a8b53d3a9cca18543e4ddbe996e8f412fc4cf7cf6e9ffe558c96da7b322a42f18bef62020e65aee119bed6102f75e2f605df09b02ec6368

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xxdyjb0y.rw1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE9AF.tmp.bat

Filesize
154B

MD5
6aa228e8a38234df37244d19d4228977

SHA1
c862357df7d912c4c1d2e71f4a0dbd8f34857f0a

SHA256
03b8a004e8b5df8e3d3c591ed99cb1206ee052412f6e32cb10fbf82424133fcd

SHA512
489041ba60aaac7df291469474c06d9fb2c7e712122c13810c0034324c2f05bc9b038b49af284682495788f4ad495f5fc4935be686c5fde25e147b0c2b520b3d

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

Filesize
186KB

MD5
bea3a6d3fe25fde4a5837129ff579eff

SHA1
90ab2a9b6692a7efeec4cad65bc449d6134087d9

SHA256
6bb2751248b7d9bf1076139d5abaee7bb6473e7375827052e68b6726cd6b80b8

SHA512
34f45e59d7587ff54c45d75d6df63109cc7c886ffb3de7820ac1db8236dafa5ad489c11338314121ba9829a7803d366aeea3833fbd0e99e02cc4a1cde0ae84c7

Download Submit
memory/1512-16-0x00007FFF26BA0000-0x00007FFF27661000-memory.dmp

Filesize
10.8MB

Download
memory/1512-18-0x00007FFF26BA0000-0x00007FFF27661000-memory.dmp

Filesize
10.8MB

Download
memory/1512-15-0x0000000000A60000-0x0000000000A94000-memory.dmp

Filesize
208KB

Download
memory/1512-66-0x00007FFF26BA0000-0x00007FFF27661000-memory.dmp

Filesize
10.8MB

Download
memory/1512-67-0x00007FFF26BA0000-0x00007FFF27661000-memory.dmp

Filesize
10.8MB

Download
memory/1512-68-0x000000001E1D0000-0x000000001E1DC000-memory.dmp

Filesize
48KB

Download
memory/1512-75-0x00007FFF26BA0000-0x00007FFF27661000-memory.dmp

Filesize
10.8MB

Download
memory/1936-0-0x00007FFF26BA3000-0x00007FFF26BA5000-memory.dmp

Filesize
8KB

Download
memory/1936-1-0x00000000000A0000-0x00000000000F0000-memory.dmp

Filesize
320KB

Download
memory/4668-24-0x000002945B320000-0x000002945B342000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads