xworm | f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21f

General

Target

f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe
Size

83KB
MD5

31490196d04d08f16caec6fb9f227360
SHA1

0ceabbf06050eac442ff5340429fbea9ae7419e7
SHA256

f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21f
SHA512

f1a1605d084c0e2c5ff24a7c5bd7f3197dd3f8bed344afec38015f051380d5b4928ba1ec68e8f1348f6f2ea247e1292d4caf95a7b71fa1668de7f35169b3b79d
SSDEEP

1536:KOItpoEucVEhr9AOlcQQn8YTlbrfikUSNG6eqhyOXcY1VA3:TBEfefAOlHQ8YTlbrfi7SN2qYOXcYM3

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

primary-organizing.gl.at.ply.gg:16003

Attributes

Install_directory
%AppData%
install_file
System.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2728-1-0x0000000000BE0000-0x0000000000BFC000-memory.dmp	family_xworm
behavioral2/files/0x000b000000023c8d-59.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
2696	powershell.exe
1108	powershell.exe
2784	powershell.exe
4692	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System.lnk	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System.lnk	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe

Executes dropped EXE 2 IoCs

pid	Process
3488	System.exe
4852	System.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\System = "C:\\Users\\Admin\\AppData\\Roaming\\System.exe"	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.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
14	ip-api.com

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
8	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2784	powershell.exe
2784	powershell.exe
4692	powershell.exe
4692	powershell.exe
2696	powershell.exe
2696	powershell.exe
1108	powershell.exe
1108	powershell.exe
2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	4692	powershell.exe
Token: SeDebugPrivilege	2696	powershell.exe
Token: SeDebugPrivilege	1108	powershell.exe
Token: SeDebugPrivilege	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe
Token: SeDebugPrivilege	3488	System.exe
Token: SeDebugPrivilege	4852	System.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2728 wrote to memory of 2784	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe	87
PID 2728 wrote to memory of 2784	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe	87
PID 2728 wrote to memory of 4692	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe	89
PID 2728 wrote to memory of 4692	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe	89
PID 2728 wrote to memory of 2696	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe	91
PID 2728 wrote to memory of 2696	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe	91
PID 2728 wrote to memory of 1108	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe	93
PID 2728 wrote to memory of 1108	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe	93
PID 2728 wrote to memory of 8	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe	95
PID 2728 wrote to memory of 8	2728	f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe	95

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\f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe
"C:\Users\Admin\AppData\Local\Temp\f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.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:2728
- 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\f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2784
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21fN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4692
- 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\System.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2696
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1108
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System" /tr "C:\Users\Admin\AppData\Roaming\System.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:8

C:\Users\Admin\AppData\Roaming\System.exe
C:\Users\Admin\AppData\Roaming\System.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3488

C:\Users\Admin\AppData\Roaming\System.exe
C:\Users\Admin\AppData\Roaming\System.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4852

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\System.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
993af531f0b57e8128ec273731c3a8e2

SHA1
a42ea55876f4f390837dd2c95fb7ff2344b6e9e1

SHA256
fff934d70d813381536d272c5b8ac6ad70acd054267b13592da767c9bd1dda62

SHA512
bdf5970ff2ee314dc297fce5c0f44765e77acbf269cd9ad9e7448a391d5f80d66a0c5426f99bc3480851e8763413aa180b3b3b6b22ef0e86a365450cb8c334e4

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

Filesize
944B

MD5
34f595487e6bfd1d11c7de88ee50356a

SHA1
4caad088c15766cc0fa1f42009260e9a02f953bb

SHA256
0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

SHA512
10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_i0h5ja20.jwy.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
83KB

MD5
31490196d04d08f16caec6fb9f227360

SHA1
0ceabbf06050eac442ff5340429fbea9ae7419e7

SHA256
f6809a32647a759cb5a171a13850cd2c62dfe6409dd8766066fc8950795bb21f

SHA512
f1a1605d084c0e2c5ff24a7c5bd7f3197dd3f8bed344afec38015f051380d5b4928ba1ec68e8f1348f6f2ea247e1292d4caf95a7b71fa1668de7f35169b3b79d

Download Submit
memory/2728-1-0x0000000000BE0000-0x0000000000BFC000-memory.dmp

Filesize
112KB

Download
memory/2728-2-0x00007FFE6D830000-0x00007FFE6E2F1000-memory.dmp

Filesize
10.8MB

Download
memory/2728-0-0x00007FFE6D833000-0x00007FFE6D835000-memory.dmp

Filesize
8KB

Download
memory/2728-57-0x00007FFE6D830000-0x00007FFE6E2F1000-memory.dmp

Filesize
10.8MB

Download
memory/2784-13-0x00007FFE6D830000-0x00007FFE6E2F1000-memory.dmp

Filesize
10.8MB

Download
memory/2784-18-0x00007FFE6D830000-0x00007FFE6E2F1000-memory.dmp

Filesize
10.8MB

Download
memory/2784-15-0x00007FFE6D830000-0x00007FFE6E2F1000-memory.dmp

Filesize
10.8MB

Download
memory/2784-14-0x00007FFE6D830000-0x00007FFE6E2F1000-memory.dmp

Filesize
10.8MB

Download
memory/2784-8-0x000001E0E42A0000-0x000001E0E42C2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads