xworm | c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395c

Analysis

max time kernel
119s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-01-2025 04:08

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General

Target

c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe
Size

159KB
MD5

f3b25838fa8d402f6c93ddd23979b810
SHA1

3935445639b0373ff59c5406315a480678e80f9e
SHA256

c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395c
SHA512

a66f7dbb3726a6fd116f6cb9229fb9f06879bdf9e5a550bd64582fded71d9d9433fbf71b754f598f550436badfdae62a6d6ff7e1ac91c41c203162280c583715
SSDEEP

3072:0325N7aVopufIeZuVGoFkfAylFYOKYoGCllFhdoH3hZ9Roe2eX9px:j1U8peZuVDRkClAXhT2eF9

Score

10^/10

xworm defense_evasion execution persistence rat trojan

Malware Config

Extracted

Family

xworm

indian-tall.gl.at.ply.gg:65520

Attributes

Install_directory
%Temp%
install_file
XClient.exe
pastebin_url
https://pastebin.com/raw/wXYjM7Vm

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012029-7.dat	family_xworm
behavioral1/memory/2336-10-0x00000000000A0000-0x00000000000BA000-memory.dmp	family_xworm
behavioral1/files/0x0008000000015dc3-13.dat	family_xworm
behavioral1/memory/2764-18-0x00000000003F0000-0x0000000000408000-memory.dmp	family_xworm
behavioral1/memory/1752-74-0x0000000001150000-0x0000000001168000-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 8 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3016	powershell.exe
2780	powershell.exe
2052	powershell.exe
2548	powershell.exe
1608	powershell.exe
1532	powershell.exe
400	powershell.exe
2952	powershell.exe

Drops startup file 4 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
2336	XwormLoader.exe
2764	xclient.exe
1752	keyauth.exe
2236	keyauth.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\keyauth = "C:\\Users\\Admin\\AppData\\Roaming\\keyauth.exe"	xclient.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 26 IoCs

Web Service

T1102

flow	ioc
29	pastebin.com
34	pastebin.com
9	pastebin.com
10	pastebin.com
21	pastebin.com
38	pastebin.com
39	pastebin.com
15	pastebin.com
19	pastebin.com
24	pastebin.com
27	pastebin.com
32	pastebin.com
35	pastebin.com
36	pastebin.com
11	pastebin.com
12	pastebin.com
23	pastebin.com
22	pastebin.com
25	pastebin.com
28	pastebin.com
30	pastebin.com
33	pastebin.com
16	pastebin.com
17	pastebin.com
18	pastebin.com
37	pastebin.com

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
5	ip-api.com
6	ip-api.com

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010
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
1816	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2804	powershell.exe
400	powershell.exe
2952	powershell.exe
3016	powershell.exe
2780	powershell.exe
2052	powershell.exe
2548	powershell.exe
1608	powershell.exe
1532	powershell.exe
2764	xclient.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

description	pid	Process
Token: SeDebugPrivilege	2804	powershell.exe
Token: SeDebugPrivilege	2764	xclient.exe
Token: SeDebugPrivilege	2336	XwormLoader.exe
Token: SeDebugPrivilege	400	powershell.exe
Token: SeDebugPrivilege	2952	powershell.exe
Token: SeDebugPrivilege	3016	powershell.exe
Token: SeDebugPrivilege	2780	powershell.exe
Token: SeDebugPrivilege	2052	powershell.exe
Token: SeDebugPrivilege	2548	powershell.exe
Token: SeDebugPrivilege	1608	powershell.exe
Token: SeDebugPrivilege	1532	powershell.exe
Token: SeDebugPrivilege	2764	xclient.exe
Token: SeDebugPrivilege	1752	keyauth.exe
Token: SeDebugPrivilege	2236	keyauth.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2764	xclient.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 2740 wrote to memory of 2804	2740	c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe	30
PID 2740 wrote to memory of 2804	2740	c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe	30
PID 2740 wrote to memory of 2804	2740	c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe	30
PID 2740 wrote to memory of 2336	2740	c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe	32
PID 2740 wrote to memory of 2336	2740	c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe	32
PID 2740 wrote to memory of 2336	2740	c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe	32
PID 2740 wrote to memory of 2764	2740	c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe	33
PID 2740 wrote to memory of 2764	2740	c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe	33
PID 2740 wrote to memory of 2764	2740	c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe	33
PID 2336 wrote to memory of 400	2336	XwormLoader.exe	35
PID 2336 wrote to memory of 400	2336	XwormLoader.exe	35
PID 2336 wrote to memory of 400	2336	XwormLoader.exe	35
PID 2336 wrote to memory of 2952	2336	XwormLoader.exe	37
PID 2336 wrote to memory of 2952	2336	XwormLoader.exe	37
PID 2336 wrote to memory of 2952	2336	XwormLoader.exe	37
PID 2336 wrote to memory of 3016	2336	XwormLoader.exe	39
PID 2336 wrote to memory of 3016	2336	XwormLoader.exe	39
PID 2336 wrote to memory of 3016	2336	XwormLoader.exe	39
PID 2336 wrote to memory of 2780	2336	XwormLoader.exe	41
PID 2336 wrote to memory of 2780	2336	XwormLoader.exe	41
PID 2336 wrote to memory of 2780	2336	XwormLoader.exe	41
PID 2764 wrote to memory of 2052	2764	xclient.exe	43
PID 2764 wrote to memory of 2052	2764	xclient.exe	43
PID 2764 wrote to memory of 2052	2764	xclient.exe	43
PID 2764 wrote to memory of 2548	2764	xclient.exe	45
PID 2764 wrote to memory of 2548	2764	xclient.exe	45
PID 2764 wrote to memory of 2548	2764	xclient.exe	45
PID 2764 wrote to memory of 1608	2764	xclient.exe	47
PID 2764 wrote to memory of 1608	2764	xclient.exe	47
PID 2764 wrote to memory of 1608	2764	xclient.exe	47
PID 2764 wrote to memory of 1532	2764	xclient.exe	49
PID 2764 wrote to memory of 1532	2764	xclient.exe	49
PID 2764 wrote to memory of 1532	2764	xclient.exe	49
PID 2764 wrote to memory of 1816	2764	xclient.exe	51
PID 2764 wrote to memory of 1816	2764	xclient.exe	51
PID 2764 wrote to memory of 1816	2764	xclient.exe	51
PID 2332 wrote to memory of 1752	2332	taskeng.exe	55
PID 2332 wrote to memory of 1752	2332	taskeng.exe	55
PID 2332 wrote to memory of 1752	2332	taskeng.exe	55
PID 2332 wrote to memory of 2236	2332	taskeng.exe	56
PID 2332 wrote to memory of 2236	2332	taskeng.exe	56
PID 2332 wrote to memory of 2236	2332	taskeng.exe	56

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\c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe
"C:\Users\Admin\AppData\Local\Temp\c1378ff7aaacea446762f5878ec501260bcdeb869e06a8f0a25845845183395cN.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2740
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHkAcgB0ACMAPgBBAGQAZAAtAFQAeQBwAGUAIAAtAEEAcwBzAGUAbQBiAGwAeQBOAGEAbQBlACAAUwB5AHMAdABlAG0ALgBXAGkAbgBkAG8AdwBzAC4ARgBvAHIAbQBzADsAPAAjAHcAeAB5ACMAPgBbAFMAeQBzAHQAZQBtAC4AVwBpAG4AZABvAHcAcwAuAEYAbwByAG0AcwAuAE0AZQBzAHMAYQBnAGUAQgBvAHgAXQA6ADoAUwBoAG8AdwAoACcARQByAHIAbwByAF8AYwBvAGQAZQBfADAAeAAxACcALAAnACcALAAnAE8ASwAnACwAJwBFAHIAcgBvAHIAJwApADwAIwB2AHcAZwAjAD4A"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2804
- C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe
  "C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2336
- - 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\XwormLoader.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:400
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XwormLoader.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2952
- - 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\XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3016
- - 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:2780
- C:\Users\Admin\AppData\Local\Temp\xclient.exe
  "C:\Users\Admin\AppData\Local\Temp\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:2764
- - 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\xclient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2052
- - 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:2548
- - 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\keyauth.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1608
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'keyauth.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1532
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "keyauth" /tr "C:\Users\Admin\AppData\Roaming\keyauth.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1816

C:\Windows\system32\taskeng.exe
taskeng.exe {50DE7CDB-6C44-4294-A681-6719A86C9670} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2332
- C:\Users\Admin\AppData\Roaming\keyauth.exe
  C:\Users\Admin\AppData\Roaming\keyauth.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1752
- C:\Users\Admin\AppData\Roaming\keyauth.exe
  C:\Users\Admin\AppData\Roaming\keyauth.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2236

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Obfuscated Files or Information

T1027

Command Obfuscation

T1027.010

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe

Filesize
77KB

MD5
e7525a2d46d78f6ea17a3c32815cc1a2

SHA1
734b924697ddfd032ae0f2467b404b91650d72f3

SHA256
c388c156025273419447629bfb28728b32c785a47968c7bce227adb31a66ffa3

SHA512
cb38565d63a429517493a5093ab93861744b4584594221c7fb558e9f5832b3feaf3f52f902079f7e7299ce2008fa03cb1ff59118469ce6461d9319ae2d5b2d34

Download Submit
C:\Users\Admin\AppData\Local\Temp\xclient.exe

Filesize
74KB

MD5
8f0fab5837f63b48e3d0bf98013ecde6

SHA1
03e392b90a808f77595f571dd01c8ce864e87d2c

SHA256
703c26b59e5eefc02cc93db1f440a7ed273cdb8928f082105f41120adc41964d

SHA512
d980674a3343c51c77b8a05b264e2c01a38f8e4ffa300763dbb2ff11e66dcce0555437e5b4ced5a6fffd0793577c9c816403987b5affccf1639bbf1338f7884d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\LDJ702ZYTT54VAPSFX58.temp

Filesize
7KB

MD5
8954f7e36e09c07a7c1a68649ea3e0c3

SHA1
0191cdba848e54054e90f6e4f7a1a929674300e0

SHA256
e7c59356526f1f6ae1cf0defda3247634857895bcdb7b1699bcf0d954808d135

SHA512
f7e7d144b6fb302944043c0344c06f6176d83983fc91e4e2cf34205acfecf719356632821d1fc009c94ee3ca4011de96e12146a2a0b051e1432af81c3b4aa823

Download Submit
memory/1752-74-0x0000000001150000-0x0000000001168000-memory.dmp

Filesize
96KB

Download
memory/2336-10-0x00000000000A0000-0x00000000000BA000-memory.dmp

Filesize
104KB

Download
memory/2740-21-0x000007FEF5790000-0x000007FEF617C000-memory.dmp

Filesize
9.9MB

Download
memory/2740-0-0x000007FEF5793000-0x000007FEF5794000-memory.dmp

Filesize
4KB

Download
memory/2740-2-0x000007FEF5790000-0x000007FEF617C000-memory.dmp

Filesize
9.9MB

Download
memory/2740-1-0x00000000000C0000-0x00000000000EE000-memory.dmp

Filesize
184KB

Download
memory/2764-18-0x00000000003F0000-0x0000000000408000-memory.dmp

Filesize
96KB

Download
memory/2804-19-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2804-20-0x00000000020D0000-0x00000000020D8000-memory.dmp

Filesize
32KB

Download
memory/2952-32-0x000000001B530000-0x000000001B812000-memory.dmp

Filesize
2.9MB

Download
memory/2952-33-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download