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/896-1-0x0000000000F80000-0x0000000000F9A000-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
5084	powershell.exe
1600	powershell.exe
3076	powershell.exe
1368	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-1-5-21-3181990009-820930284-137514597-1000\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

Loads dropped DLL 1 IoCs

pid	Process
896	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-1-5-21-3181990009-820930284-137514597-1000\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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1972	timeout.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1368	powershell.exe
1368	powershell.exe
5084	powershell.exe
5084	powershell.exe
1600	powershell.exe
1600	powershell.exe
3076	powershell.exe
3076	powershell.exe
896	ratka.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	896	ratka.exe
Token: SeDebugPrivilege	1368	powershell.exe
Token: SeDebugPrivilege	5084	powershell.exe
Token: SeDebugPrivilege	1600	powershell.exe
Token: SeDebugPrivilege	3076	powershell.exe
Token: SeDebugPrivilege	896	ratka.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
896	ratka.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 896 wrote to memory of 1368	896	ratka.exe	92
PID 896 wrote to memory of 1368	896	ratka.exe	92
PID 896 wrote to memory of 5084	896	ratka.exe	95
PID 896 wrote to memory of 5084	896	ratka.exe	95
PID 896 wrote to memory of 1600	896	ratka.exe	98
PID 896 wrote to memory of 1600	896	ratka.exe	98
PID 896 wrote to memory of 3076	896	ratka.exe	100
PID 896 wrote to memory of 3076	896	ratka.exe	100
PID 896 wrote to memory of 1828	896	ratka.exe	117
PID 896 wrote to memory of 1828	896	ratka.exe	117
PID 1828 wrote to memory of 1972	1828	cmd.exe	119
PID 1828 wrote to memory of 1972	1828	cmd.exe	119

C:\Users\Admin\AppData\Local\Temp\ratka.exe
"C:\Users\Admin\AppData\Local\Temp\ratka.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:896
- 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:1368
- 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:5084
- 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:1600
- 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:3076
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp90DD.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1828
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1972

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
ef647504cf229a16d02de14a16241b90

SHA1
81480caca469857eb93c75d494828b81e124fda0

SHA256
47002672443e80410e55a0b6d683573ac27d70d803b57ee3c2818d1008669710

SHA512
a6d8c08c708eee6f7e700880ce79d2ba7cd0acbe8529d96e18f3e90ea1f3cf33fd801dd6eba6017cdd02769e968c48278c090c1deeac710124f79423cd862ee1

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

Filesize
944B

MD5
7f89ce83f9b0edffc877d2abdcaf9222

SHA1
88bbe01ebc203707c61b04ef4074f60d9bd24dbf

SHA256
591b03fed4dbbeff2cfc9edc0d52ce3ccec6d29c4769498ac853a8bbe9cf95f5

SHA512
50f69b08b40f5945cfbc68b4125707a7197246a51e03d86214027bacd5c9cc801e509dc020090b1fbe4c91e9f6acadb5a67c846bf5e8f146385d206f730ba8b2

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_aqie42gq.0zb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp84E6.tmp

Filesize
100KB

MD5
1b942faa8e8b1008a8c3c1004ba57349

SHA1
cd99977f6c1819b12b33240b784ca816dfe2cb91

SHA256
555ccb7ecd9ae52a75135fdd81ab443a49d5785b0621ed6468d28c4234e46ccc

SHA512
5aee3d59478d41ddd5885c99b394c9c4983064e2b3528db1a3f7fc289662bced4f57d072517bbe7573c6d1789435e987ef1aa9cc91f372bcfd30bc016675fa43

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp90DD.tmp.bat

Filesize
157B

MD5
bcd5a817bfea24efb44612a44ffdaefe

SHA1
371b33fe19bb4d87990d41911104a827cc61aa02

SHA256
7eff698ff7c7baca47306bfac7479dfde165c4bc07cab4b3884c148acc455dec

SHA512
1236ca5a2408e05ad673b88468099552f8b0fb12a6fb71c1ecfb486d832a53dbf1e2327f96b9e11a9e3858a00f251c0a15714ce8d76aa88dc89fd7566e0c19e6

Download Submit
memory/896-60-0x00000000018A0000-0x00000000018AC000-memory.dmp

Filesize
48KB

Download
memory/896-56-0x00007FFD99A03000-0x00007FFD99A05000-memory.dmp

Filesize
8KB

Download
memory/896-57-0x00007FFD99A00000-0x00007FFD9A4C1000-memory.dmp

Filesize
10.8MB

Download
memory/896-58-0x00007FFD99A00000-0x00007FFD9A4C1000-memory.dmp

Filesize
10.8MB

Download
memory/896-0-0x00007FFD99A03000-0x00007FFD99A05000-memory.dmp

Filesize
8KB

Download
memory/896-61-0x000000001DBB0000-0x000000001DBEA000-memory.dmp

Filesize
232KB

Download
memory/896-1-0x0000000000F80000-0x0000000000F9A000-memory.dmp

Filesize
104KB

Download
memory/896-73-0x00007FFD99A00000-0x00007FFD9A4C1000-memory.dmp

Filesize
10.8MB

Download
memory/1368-17-0x00007FFD99A00000-0x00007FFD9A4C1000-memory.dmp

Filesize
10.8MB

Download
memory/1368-14-0x00007FFD99A00000-0x00007FFD9A4C1000-memory.dmp

Filesize
10.8MB

Download
memory/1368-13-0x00007FFD99A00000-0x00007FFD9A4C1000-memory.dmp

Filesize
10.8MB

Download
memory/1368-12-0x00007FFD99A00000-0x00007FFD9A4C1000-memory.dmp

Filesize
10.8MB

Download
memory/1368-7-0x000001FE3E3F0000-0x000001FE3E412000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads