xworm | 9465f48edb12c0ecfe182d5d6a91be86afd52c152b61c3916efb09df3a90cb05

General

Target

ratka.exe
Size

80KB
MD5

39ffa7b287f2d822703a6deea560dcbd
SHA1

34ae6406ec73ad02955cb7676b37489fdab1695b
SHA256

9465f48edb12c0ecfe182d5d6a91be86afd52c152b61c3916efb09df3a90cb05
SHA512

7efa49f3c9ba846d6382e7683d64a5b00232c459028a177b07c0e4f28f06682bd3a219421a355515766007bee9e0dfcce5e243afba73290487057542a644cc40
SSDEEP

1536:GeKbbG1+cDVWr5hLbwWV5hcEW07Z4E+bCXsEN9qtgq6rLs4ORpmcG1h:GeKbb60r5hLbwWVcPk1+b8JY4ORpmth

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

cause-indexes.gl.at.ply.gg:17210

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4228-1-0x0000000000580000-0x000000000059A000-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
2484	powershell.exe
4848	powershell.exe
1752	powershell.exe
2836	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-1-5-21-1294999112-580688058-1763548717-1000\Control Panel\International\Geo\Nation	ratka.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	ratka.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	ratka.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-1-5-21-1294999112-580688058-1763548717-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	ratka.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
2484	powershell.exe
2484	powershell.exe
4848	powershell.exe
4848	powershell.exe
1752	powershell.exe
1752	powershell.exe
2836	powershell.exe
2836	powershell.exe
4228	ratka.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4228	ratka.exe
Token: SeDebugPrivilege	2484	powershell.exe
Token: SeDebugPrivilege	4848	powershell.exe
Token: SeDebugPrivilege	1752	powershell.exe
Token: SeDebugPrivilege	2836	powershell.exe
Token: SeDebugPrivilege	4228	ratka.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4228	ratka.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4228 wrote to memory of 2484	4228	ratka.exe	93
PID 4228 wrote to memory of 2484	4228	ratka.exe	93
PID 4228 wrote to memory of 4848	4228	ratka.exe	97
PID 4228 wrote to memory of 4848	4228	ratka.exe	97
PID 4228 wrote to memory of 1752	4228	ratka.exe	99
PID 4228 wrote to memory of 1752	4228	ratka.exe	99
PID 4228 wrote to memory of 2836	4228	ratka.exe	101
PID 4228 wrote to memory of 2836	4228	ratka.exe	101

C:\Users\Admin\AppData\Local\Temp\ratka.exe
"C:\Users\Admin\AppData\Local\Temp\ratka.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4228
- 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\ratka.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2484
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ratka.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 -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1752
- 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:2836

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
bd5940f08d0be56e65e5f2aaf47c538e

SHA1
d7e31b87866e5e383ab5499da64aba50f03e8443

SHA256
2d2f364c75bd2897504249f42cdf1d19374f5230aad68fa9154ea3d03e3031a6

SHA512
c34d10c7e07da44a180fae9889b61f08903aa84e8ddfa80c31c272b1ef9d491b8cec6b8a4c836c3cb1583fe8f4955c6a8db872515de3a9e10eae09610c959406

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

Filesize
944B

MD5
a2c8179aaa149c0b9791b73ce44c04d1

SHA1
703361b0d43ec7f669304e7c0ffbbfdeb1e484ff

SHA256
c1d30342a40a2b6e7553da30ceb85754d33820f6fbb3bbbed1ceb30d6390de4a

SHA512
2e201dd457d055baad86f68c15bcc7beb48d6dc2ffc10db7f304eb93f697e7b45991cbde857d25da2c9c60c23f3e13df8b5ed5809c1753737a23096e296cc9e3

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

Filesize
944B

MD5
d65ebc84c6b0b52901fb46f5e2b83ab5

SHA1
d036a0c3eb9e1616d0f7f5ca41171060c13a3095

SHA256
d45581b0807a0d04a70ec75e3e4575e73f148e5b4e0d3d325dfbd6400a4bfbd1

SHA512
88ac232e7702ebd53788cf8429d266ae367111bfccf4bc9d40ead25b552347521458ca60d320e2775b5d2edcaf8501251cb2db68b38dc000ac50463fb80865be

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hss0g1to.5kk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2484-11-0x0000026BBB9E0000-0x0000026BBBA02000-memory.dmp

Filesize
136KB

Download
memory/2484-14-0x00007FFB951C0000-0x00007FFB95C81000-memory.dmp

Filesize
10.8MB

Download
memory/2484-17-0x00007FFB951C0000-0x00007FFB95C81000-memory.dmp

Filesize
10.8MB

Download
memory/2484-13-0x00007FFB951C0000-0x00007FFB95C81000-memory.dmp

Filesize
10.8MB

Download
memory/2484-12-0x00007FFB951C0000-0x00007FFB95C81000-memory.dmp

Filesize
10.8MB

Download
memory/4228-0-0x00007FFB951C3000-0x00007FFB951C5000-memory.dmp

Filesize
8KB

Download
memory/4228-1-0x0000000000580000-0x000000000059A000-memory.dmp

Filesize
104KB

Download
memory/4228-56-0x00007FFB951C0000-0x00007FFB95C81000-memory.dmp

Filesize
10.8MB

Download
memory/4228-57-0x00007FFB951C3000-0x00007FFB951C5000-memory.dmp

Filesize
8KB

Download
memory/4228-58-0x00007FFB951C0000-0x00007FFB95C81000-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