xworm | 78286063f2e7de6b9d38075affdbfd0f24456eceefb4e86321298e71409a6a02

General

Target

RedWare Temp V3.exe
Size

86KB
MD5

dd14ce42c869309959374b8497b8b8c6
SHA1

3d6fbe7bdccb4d779e84ac058f8c7ec8fc3e623f
SHA256

78286063f2e7de6b9d38075affdbfd0f24456eceefb4e86321298e71409a6a02
SHA512

95975b34eac64834cffeba1322d3718afead0163cf11fb4362c12cb1d34beabc38cc4407619de98726cd977a212fed7002a2664b37ce105d07e8265776f47124
SSDEEP

1536:gp+KuU1oVHPsbMJuguun/Gmf6WpFOfNAL78C4Mnh:g4TQotPsbsugR/GOzOfq/t1h

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
XClient.exe
pastebin_url
https://pastebin.com/raw/KESYt2Qf

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1744-1-0x0000000000330000-0x000000000034C000-memory.dmp	family_xworm
behavioral1/files/0x0006000000004ed7-35.dat	family_xworm
behavioral1/memory/1908-37-0x00000000001D0000-0x00000000001EC000-memory.dmp	family_xworm
behavioral1/memory/1280-40-0x0000000000130000-0x000000000014C000-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
1372	powershell.exe
2716	powershell.exe
2356	powershell.exe
2732	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	RedWare Temp V3.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	RedWare Temp V3.exe

Executes dropped EXE 2 IoCs

pid	Process
1908	XClient.exe
1280	XClient.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	RedWare Temp V3.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 28 IoCs

Web Service

T1102

flow	ioc
15	pastebin.com
28	pastebin.com
29	pastebin.com
31	pastebin.com
22	pastebin.com
25	pastebin.com
26	pastebin.com
27	pastebin.com
30	pastebin.com
32	pastebin.com
34	pastebin.com
36	pastebin.com
7	pastebin.com
8	pastebin.com
10	pastebin.com
16	pastebin.com
33	pastebin.com
37	pastebin.com
11	pastebin.com
13	pastebin.com
17	pastebin.com
18	pastebin.com
24	pastebin.com
35	pastebin.com
23	pastebin.com
9	pastebin.com
12	pastebin.com
14	pastebin.com

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
4	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
488	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2716	powershell.exe
2356	powershell.exe
2732	powershell.exe
1372	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1744	RedWare Temp V3.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	2356	powershell.exe
Token: SeDebugPrivilege	2732	powershell.exe
Token: SeDebugPrivilege	1372	powershell.exe
Token: SeDebugPrivilege	1908	XClient.exe
Token: SeDebugPrivilege	1280	XClient.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 2716	1744	RedWare Temp V3.exe	32
PID 1744 wrote to memory of 2716	1744	RedWare Temp V3.exe	32
PID 1744 wrote to memory of 2716	1744	RedWare Temp V3.exe	32
PID 1744 wrote to memory of 2356	1744	RedWare Temp V3.exe	34
PID 1744 wrote to memory of 2356	1744	RedWare Temp V3.exe	34
PID 1744 wrote to memory of 2356	1744	RedWare Temp V3.exe	34
PID 1744 wrote to memory of 2732	1744	RedWare Temp V3.exe	36
PID 1744 wrote to memory of 2732	1744	RedWare Temp V3.exe	36
PID 1744 wrote to memory of 2732	1744	RedWare Temp V3.exe	36
PID 1744 wrote to memory of 1372	1744	RedWare Temp V3.exe	38
PID 1744 wrote to memory of 1372	1744	RedWare Temp V3.exe	38
PID 1744 wrote to memory of 1372	1744	RedWare Temp V3.exe	38
PID 1744 wrote to memory of 488	1744	RedWare Temp V3.exe	40
PID 1744 wrote to memory of 488	1744	RedWare Temp V3.exe	40
PID 1744 wrote to memory of 488	1744	RedWare Temp V3.exe	40
PID 2168 wrote to memory of 1908	2168	taskeng.exe	43
PID 2168 wrote to memory of 1908	2168	taskeng.exe	43
PID 2168 wrote to memory of 1908	2168	taskeng.exe	43
PID 2168 wrote to memory of 1280	2168	taskeng.exe	44
PID 2168 wrote to memory of 1280	2168	taskeng.exe	44
PID 2168 wrote to memory of 1280	2168	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\RedWare Temp V3.exe
"C:\Users\Admin\AppData\Local\Temp\RedWare Temp V3.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1744
- 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\RedWare Temp V3.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 'RedWare Temp V3.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2356
- 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:2732
- 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:1372
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:488

C:\Windows\system32\taskeng.exe
taskeng.exe {0299A111-025C-49EC-AE43-54D21EB94611} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2168
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1908
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1280

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
7KB

MD5
42d15f7345ded4a0e1a643cdb89abc0f

SHA1
5be3b6380e7827214b1c802143e5b3b7a7a40b23

SHA256
0e38a0e088afba7b0031bc7e8e4da01c188447efab2db9a3cf6e3964e1c2297f

SHA512
4805d6767c97e501f9c888bf70d0ba4d77efa8f81f9c5b7051c6123a99b9923a6544f34bbc6b7e67d6ab119dd97b1d62ed5963ca3bedb1de1371275fb0fe66ad

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

Filesize
86KB

MD5
dd14ce42c869309959374b8497b8b8c6

SHA1
3d6fbe7bdccb4d779e84ac058f8c7ec8fc3e623f

SHA256
78286063f2e7de6b9d38075affdbfd0f24456eceefb4e86321298e71409a6a02

SHA512
95975b34eac64834cffeba1322d3718afead0163cf11fb4362c12cb1d34beabc38cc4407619de98726cd977a212fed7002a2664b37ce105d07e8265776f47124

Download Submit
memory/1280-40-0x0000000000130000-0x000000000014C000-memory.dmp

Filesize
112KB

Download
memory/1744-1-0x0000000000330000-0x000000000034C000-memory.dmp

Filesize
112KB

Download
memory/1744-2-0x000007FEF5970000-0x000007FEF635C000-memory.dmp

Filesize
9.9MB

Download
memory/1744-3-0x000007FEF5973000-0x000007FEF5974000-memory.dmp

Filesize
4KB

Download
memory/1744-4-0x000007FEF5970000-0x000007FEF635C000-memory.dmp

Filesize
9.9MB

Download
memory/1744-0-0x000007FEF5973000-0x000007FEF5974000-memory.dmp

Filesize
4KB

Download
memory/1908-37-0x00000000001D0000-0x00000000001EC000-memory.dmp

Filesize
112KB

Download
memory/2356-17-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download
memory/2356-18-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2716-11-0x0000000002760000-0x0000000002768000-memory.dmp

Filesize
32KB

Download
memory/2716-10-0x000000001B570000-0x000000001B852000-memory.dmp

Filesize
2.9MB

Download
memory/2716-9-0x0000000002A10000-0x0000000002A90000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads