xworm | 00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

General

Target

00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
Size

137KB
MD5

1a925fce50787a5028b73dd32e0c7dce
SHA1

7205d5c3d7efbc5805eb0b343a1bc83903e7589c
SHA256

00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3
SHA512

ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8
SSDEEP

3072:6fjh7Fv9fjOwiBz65/M6If+3Js+3JFkKeTno:8hJv9AxBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

147.185.221.23:48450

Mutex

2YsFPOHVMLfmF9px

Attributes

Install_directory
%AppData%
install_file
Update.exe

aes.plain

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2308-1-0x0000000000300000-0x0000000000328000-memory.dmp	family_xworm
behavioral1/files/0x000b0000000120f9-35.dat	family_xworm
behavioral1/memory/1616-37-0x0000000000F30000-0x0000000000F58000-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
3036	powershell.exe
2716	powershell.exe
2848	powershell.exe
2608	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Update.lnk	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Update.lnk	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe

Executes dropped EXE 3 IoCs

pid	Process
1616	Update.exe
2192	Update.exe
2020	Update.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\Update = "C:\\Users\\Admin\\AppData\\Roaming\\Update.exe"	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.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
2904	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2716	powershell.exe
2848	powershell.exe
2608	powershell.exe
3036	powershell.exe
2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	2848	powershell.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeDebugPrivilege	3036	powershell.exe
Token: SeDebugPrivilege	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
Token: SeDebugPrivilege	1616	Update.exe
Token: SeDebugPrivilege	2192	Update.exe
Token: SeDebugPrivilege	2020	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 2716	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	31
PID 2308 wrote to memory of 2716	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	31
PID 2308 wrote to memory of 2716	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	31
PID 2308 wrote to memory of 2848	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	33
PID 2308 wrote to memory of 2848	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	33
PID 2308 wrote to memory of 2848	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	33
PID 2308 wrote to memory of 2608	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	35
PID 2308 wrote to memory of 2608	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	35
PID 2308 wrote to memory of 2608	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	35
PID 2308 wrote to memory of 3036	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	37
PID 2308 wrote to memory of 3036	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	37
PID 2308 wrote to memory of 3036	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	37
PID 2308 wrote to memory of 2904	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	39
PID 2308 wrote to memory of 2904	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	39
PID 2308 wrote to memory of 2904	2308	00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe	39
PID 1508 wrote to memory of 1616	1508	taskeng.exe	42
PID 1508 wrote to memory of 1616	1508	taskeng.exe	42
PID 1508 wrote to memory of 1616	1508	taskeng.exe	42
PID 1508 wrote to memory of 2192	1508	taskeng.exe	43
PID 1508 wrote to memory of 2192	1508	taskeng.exe	43
PID 1508 wrote to memory of 2192	1508	taskeng.exe	43
PID 1508 wrote to memory of 2020	1508	taskeng.exe	44
PID 1508 wrote to memory of 2020	1508	taskeng.exe	44
PID 1508 wrote to memory of 2020	1508	taskeng.exe	44

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\00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe
"C:\Users\Admin\AppData\Local\Temp\00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe"
1⤵
- 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:2308
- 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\00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2716
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2848
- 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\Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2608
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3036
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Update" /tr "C:\Users\Admin\AppData\Roaming\Update.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2904

C:\Windows\system32\taskeng.exe
taskeng.exe {B9997810-734E-4263-8B6B-6E06AFDB831A} S-1-5-21-3551809350-4263495960-1443967649-1000:NNYJZAHP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Users\Admin\AppData\Roaming\Update.exe
  C:\Users\Admin\AppData\Roaming\Update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1616
- C:\Users\Admin\AppData\Roaming\Update.exe
  C:\Users\Admin\AppData\Roaming\Update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2192
- C:\Users\Admin\AppData\Roaming\Update.exe
  C:\Users\Admin\AppData\Roaming\Update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2020

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
badcf7f147d3fff66b149bc39d2d16f1

SHA1
f3009e688b480a123bb3442341c5b60209e7d502

SHA256
e56a5df686add0c01fd015ff47755e1f075fef49758e9988a0989ff830878de7

SHA512
ba44dff8d84d32e69df7f937f4f29506b795b8cf154c30f4553c07589ad4a11246e012897fc056084d43f055b77ca1b3b8cd919ea8dcb68bc7554a036fec3fe1

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

Filesize
137KB

MD5
1a925fce50787a5028b73dd32e0c7dce

SHA1
7205d5c3d7efbc5805eb0b343a1bc83903e7589c

SHA256
00956e3a55867b348d29da5f04cf6fb51e85872389ce6dc5f4015a958c575fb3

SHA512
ceec3fa381bbcb32fb520b876fac67defc2712fcf7dcbf4a69d50a227c8f81f1cbb3aac03fc0f2ac007105b9b378c5a1c405ec2b326bf284795c0ae0e85d93a8

Download Submit
memory/1616-37-0x0000000000F30000-0x0000000000F58000-memory.dmp

Filesize
160KB

Download
memory/2308-31-0x000000001B280000-0x000000001B300000-memory.dmp

Filesize
512KB

Download
memory/2308-1-0x0000000000300000-0x0000000000328000-memory.dmp

Filesize
160KB

Download
memory/2308-0-0x000007FEF5173000-0x000007FEF5174000-memory.dmp

Filesize
4KB

Download
memory/2308-33-0x000000001B280000-0x000000001B300000-memory.dmp

Filesize
512KB

Download
memory/2308-32-0x000007FEF5173000-0x000007FEF5174000-memory.dmp

Filesize
4KB

Download
memory/2716-7-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2716-8-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2716-6-0x0000000002A50000-0x0000000002AD0000-memory.dmp

Filesize
512KB

Download
memory/2848-15-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/2848-14-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads