xworm | d079eeadd916559533a7789cdc3a5bdb06800ac937a74bb6d32445f58ec307f5

General

Target

d079eeadd916559533a7789cdc3a5bdb06800ac937a74bb6d32445f58ec307f5.exe
Size

66KB
MD5

38b7ff17f563154a615410ae22573f13
SHA1

eda84541084a7020b4b08c8696d8bde0dd4c7602
SHA256

d079eeadd916559533a7789cdc3a5bdb06800ac937a74bb6d32445f58ec307f5
SHA512

b87d58b8338f29278fb0563be72fc90c894b4206979f0f28897ebd384dcc5c2bba4112a031c24dcd18844d7765b904d0376767a72b65eee8b74b5d7a2c199e24
SSDEEP

1536:3neHSDcksj3CGVAfBeVjFu/fWHE0uGxvV6PGE:3neHgfsjFVAfBcvceE

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

perfect-ringtones.gl.at.ply.gg:15597

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012259-5.dat	family_xworm
behavioral1/memory/2816-7-0x0000000000DB0000-0x0000000000DC4000-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
2564	powershell.exe
3004	powershell.exe
2872	powershell.exe
1192	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	Xclient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	Xclient.exe

Executes dropped EXE 3 IoCs

pid	Process
2816	Xclient.exe
2148	XClient.exe
2016	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	Xclient.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
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
1620	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2564	powershell.exe
3004	powershell.exe
2872	powershell.exe
1192	powershell.exe
2816	Xclient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2816	Xclient.exe
Token: SeDebugPrivilege	2564	powershell.exe
Token: SeDebugPrivilege	3004	powershell.exe
Token: SeDebugPrivilege	2872	powershell.exe
Token: SeDebugPrivilege	1192	powershell.exe
Token: SeDebugPrivilege	2816	Xclient.exe
Token: SeDebugPrivilege	2148	XClient.exe
Token: SeDebugPrivilege	2016	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2816	Xclient.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 2816	1508	d079eeadd916559533a7789cdc3a5bdb06800ac937a74bb6d32445f58ec307f5.exe	31
PID 1508 wrote to memory of 2816	1508	d079eeadd916559533a7789cdc3a5bdb06800ac937a74bb6d32445f58ec307f5.exe	31
PID 1508 wrote to memory of 2816	1508	d079eeadd916559533a7789cdc3a5bdb06800ac937a74bb6d32445f58ec307f5.exe	31
PID 2816 wrote to memory of 2564	2816	Xclient.exe	33
PID 2816 wrote to memory of 2564	2816	Xclient.exe	33
PID 2816 wrote to memory of 2564	2816	Xclient.exe	33
PID 2816 wrote to memory of 3004	2816	Xclient.exe	35
PID 2816 wrote to memory of 3004	2816	Xclient.exe	35
PID 2816 wrote to memory of 3004	2816	Xclient.exe	35
PID 2816 wrote to memory of 2872	2816	Xclient.exe	37
PID 2816 wrote to memory of 2872	2816	Xclient.exe	37
PID 2816 wrote to memory of 2872	2816	Xclient.exe	37
PID 2816 wrote to memory of 1192	2816	Xclient.exe	39
PID 2816 wrote to memory of 1192	2816	Xclient.exe	39
PID 2816 wrote to memory of 1192	2816	Xclient.exe	39
PID 2816 wrote to memory of 1620	2816	Xclient.exe	41
PID 2816 wrote to memory of 1620	2816	Xclient.exe	41
PID 2816 wrote to memory of 1620	2816	Xclient.exe	41
PID 2376 wrote to memory of 2148	2376	taskeng.exe	44
PID 2376 wrote to memory of 2148	2376	taskeng.exe	44
PID 2376 wrote to memory of 2148	2376	taskeng.exe	44
PID 2376 wrote to memory of 2016	2376	taskeng.exe	45
PID 2376 wrote to memory of 2016	2376	taskeng.exe	45
PID 2376 wrote to memory of 2016	2376	taskeng.exe	45

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\d079eeadd916559533a7789cdc3a5bdb06800ac937a74bb6d32445f58ec307f5.exe
"C:\Users\Admin\AppData\Local\Temp\d079eeadd916559533a7789cdc3a5bdb06800ac937a74bb6d32445f58ec307f5.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Users\Admin\AppData\Roaming\Xclient.exe
  "C:\Users\Admin\AppData\Roaming\Xclient.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2816
- - 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'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2564
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Xclient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3004
- - 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'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2872
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1192
- - 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"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1620

C:\Windows\system32\taskeng.exe
taskeng.exe {76CEA43B-BB6F-4AEA-8D01-F8835D6050AA} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2148
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2016

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

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Downloads

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

Filesize
7KB

MD5
078d6f0b1569133ce56280ed1ebcc2b7

SHA1
5dd1c007382a856d5fbd10c854bb4f962aca64b2

SHA256
fdd1219a8d998b3123b2fa566396e9773e94be60a5674ec9fd5af14b2e7cb894

SHA512
d5a2d94b5fdc1f3add756cec59b05c954fdf430c58ef43affa3573d5ea669604ce4358671eabaee59441142311a60d6490029fdaab79d9291ff95713c3906065

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

Filesize
56KB

MD5
361befaf798238d6fa0eb9a33e6c0857

SHA1
eea78ed5fb05ca4cdd5b287b33d50226cd0586da

SHA256
b0b9917c1fbd92139d919ef85206a6503489a0327053700beee5f1819dec2404

SHA512
3704cab8c32a5a50f8c5c7b68eed3a45dcce89065177322767bbd08c0bd8e98db7c1af86bf86f93164c0d18eaba82935a1e88c4b2e376ea2ddbfb3ed5b6bc01e

Download Submit
memory/1508-1-0x00000000009B0000-0x00000000009C6000-memory.dmp

Filesize
88KB

Download
memory/1508-0-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

Filesize
4KB

Download
memory/2564-15-0x0000000001DE0000-0x0000000001DE8000-memory.dmp

Filesize
32KB

Download
memory/2564-14-0x000000001B680000-0x000000001B962000-memory.dmp

Filesize
2.9MB

Download
memory/2816-7-0x0000000000DB0000-0x0000000000DC4000-memory.dmp

Filesize
80KB

Download
memory/2816-9-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2816-8-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2816-35-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2816-36-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/3004-21-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/3004-22-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads