xworm | 6f2e22d541680c151da164b02f916a3d72da0517b2f052f7356d05e8b374690b

General

Target

c4067d965604f4f37a63f298b22cc4d0.exe
Size

157KB
MD5

c4067d965604f4f37a63f298b22cc4d0
SHA1

325b70cdf286d63934fe34f51dd6da3a8b672081
SHA256

6f2e22d541680c151da164b02f916a3d72da0517b2f052f7356d05e8b374690b
SHA512

dd7f7c06e2d28c84f901dbe1ee55963342ec60b08fac54e404185b70b0ef10090df797ca72e9adc42d3ba9ed32aa71f344e3f277529c92f43fc82603a5a8e12e
SSDEEP

1536:tTP0/lt9ZWAUpysZbALBYoz6M9OvW/CdEB:tTs/lt9rUpysZbAL62OvzdEB

Score

10^/10

xworm persistence rat trojan

Malware Config

Signatures

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c4067d965604f4f37a63f298b22cc4d0.lnk	c4067d965604f4f37a63f298b22cc4d0.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c4067d965604f4f37a63f298b22cc4d0.lnk	c4067d965604f4f37a63f298b22cc4d0.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows\CurrentVersion\Run\c4067d965604f4f37a63f298b22cc4d0 = "C:\\Users\\Admin\\AppData\\Roaming\\c4067d965604f4f37a63f298b22cc4d0.exe"	c4067d965604f4f37a63f298b22cc4d0.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1052	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1156	powershell.exe
268	powershell.exe
1016	powershell.exe
1408	c4067d965604f4f37a63f298b22cc4d0.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1408	c4067d965604f4f37a63f298b22cc4d0.exe
Token: SeDebugPrivilege	1156	powershell.exe
Token: SeDebugPrivilege	268	powershell.exe
Token: SeDebugPrivilege	1016	powershell.exe
Token: SeDebugPrivilege	1408	c4067d965604f4f37a63f298b22cc4d0.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1408	c4067d965604f4f37a63f298b22cc4d0.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1408 wrote to memory of 1156	1408	c4067d965604f4f37a63f298b22cc4d0.exe	27
PID 1408 wrote to memory of 1156	1408	c4067d965604f4f37a63f298b22cc4d0.exe	27
PID 1408 wrote to memory of 1156	1408	c4067d965604f4f37a63f298b22cc4d0.exe	27
PID 1408 wrote to memory of 268	1408	c4067d965604f4f37a63f298b22cc4d0.exe	29
PID 1408 wrote to memory of 268	1408	c4067d965604f4f37a63f298b22cc4d0.exe	29
PID 1408 wrote to memory of 268	1408	c4067d965604f4f37a63f298b22cc4d0.exe	29
PID 1408 wrote to memory of 1016	1408	c4067d965604f4f37a63f298b22cc4d0.exe	31
PID 1408 wrote to memory of 1016	1408	c4067d965604f4f37a63f298b22cc4d0.exe	31
PID 1408 wrote to memory of 1016	1408	c4067d965604f4f37a63f298b22cc4d0.exe	31
PID 1408 wrote to memory of 1052	1408	c4067d965604f4f37a63f298b22cc4d0.exe	33
PID 1408 wrote to memory of 1052	1408	c4067d965604f4f37a63f298b22cc4d0.exe	33
PID 1408 wrote to memory of 1052	1408	c4067d965604f4f37a63f298b22cc4d0.exe	33

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\c4067d965604f4f37a63f298b22cc4d0.exe
"C:\Users\Admin\AppData\Local\Temp\c4067d965604f4f37a63f298b22cc4d0.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:1408
- 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\c4067d965604f4f37a63f298b22cc4d0.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1156
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'c4067d965604f4f37a63f298b22cc4d0.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:268
- 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\c4067d965604f4f37a63f298b22cc4d0.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1016
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "c4067d965604f4f37a63f298b22cc4d0" /tr "C:\Users\Admin\AppData\Roaming\c4067d965604f4f37a63f298b22cc4d0.exe"
  2⤵
  - Creates scheduled task(s)
  PID:1052

C:\Windows\system32\taskeng.exe
taskeng.exe {537F8A49-791D-4B3C-BB2C-2213D26730E2} S-1-5-21-1914912747-3343861975-731272777-1000:TMRJMUQF\Admin:Interactive:[1]
1⤵
PID:1928

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

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
fedf102969de6012d0a579f1f5e266f9

SHA1
782d75ea4995289386c7a031161b9d845a0393ca

SHA256
1deab7ebbe65bb290758d2682f7493cdfd9f16d96d1099c6332da582f8531831

SHA512
8f288a60219d51682d57612d9d61c825cdb6f2d855b888df4d8d5a928fe670931519137067ecf64ba35f4ad428bf63a30e7165e887f7378610571ecf7a63bc93

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

Filesize
7KB

MD5
fedf102969de6012d0a579f1f5e266f9

SHA1
782d75ea4995289386c7a031161b9d845a0393ca

SHA256
1deab7ebbe65bb290758d2682f7493cdfd9f16d96d1099c6332da582f8531831

SHA512
8f288a60219d51682d57612d9d61c825cdb6f2d855b888df4d8d5a928fe670931519137067ecf64ba35f4ad428bf63a30e7165e887f7378610571ecf7a63bc93

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\D755IZ9DVY92GGWOSMP8.temp

Filesize
7KB

MD5
fedf102969de6012d0a579f1f5e266f9

SHA1
782d75ea4995289386c7a031161b9d845a0393ca

SHA256
1deab7ebbe65bb290758d2682f7493cdfd9f16d96d1099c6332da582f8531831

SHA512
8f288a60219d51682d57612d9d61c825cdb6f2d855b888df4d8d5a928fe670931519137067ecf64ba35f4ad428bf63a30e7165e887f7378610571ecf7a63bc93

Download Submit
memory/268-73-0x0000000002A3B000-0x0000000002A72000-memory.dmp

Filesize
220KB

Download
memory/268-70-0x000000001B390000-0x000000001B672000-memory.dmp

Filesize
2.9MB

Download
memory/268-72-0x0000000002A34000-0x0000000002A37000-memory.dmp

Filesize
12KB

Download
memory/268-71-0x0000000001F10000-0x0000000001F18000-memory.dmp

Filesize
32KB

Download
memory/1016-80-0x000000000297B000-0x00000000029B2000-memory.dmp

Filesize
220KB

Download
memory/1016-79-0x0000000002974000-0x0000000002977000-memory.dmp

Filesize
12KB

Download
memory/1156-61-0x0000000002AE0000-0x0000000002B60000-memory.dmp

Filesize
512KB

Download
memory/1156-60-0x0000000001E50000-0x0000000001E58000-memory.dmp

Filesize
32KB

Download
memory/1156-62-0x0000000002AE0000-0x0000000002B60000-memory.dmp

Filesize
512KB

Download
memory/1156-59-0x000000001B230000-0x000000001B512000-memory.dmp

Filesize
2.9MB

Download
memory/1156-64-0x0000000002AE0000-0x0000000002B60000-memory.dmp

Filesize
512KB

Download
memory/1156-63-0x0000000002AE0000-0x0000000002B60000-memory.dmp

Filesize
512KB

Download
memory/1408-54-0x00000000003B0000-0x00000000003DC000-memory.dmp

Filesize
176KB

Download
memory/1408-84-0x0000000001F50000-0x0000000001FD0000-memory.dmp

Filesize
512KB

Download
memory/1408-85-0x0000000001F50000-0x0000000001FD0000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads