xworm | fb63758b69032986e72f3d9a3e95b651151dce8f4349aa539b65422beef5702a

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 19:34

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General

Target

Loli-Mod-main/y.exe
Size

38KB
MD5

9212396ec7e75aee632a2304c9050bb3
SHA1

ecd187b60d5619ba78ab54bdd43ab9419ca4a72d
SHA256

6b82fc5f7ed107648cdb24ebd5f2aa0cff16af9d736ac8455175498a7ad47266
SHA512

b00528fa583cbd17b4a7b3f474c8177a288d95ab0f80aca1381434cb15df7fe0b2a9b7d6ea95d4ec55e8ad279f7473db07dde82d1ec408a46cbb60b4e4c5d2a4
SSDEEP

768:AXI+D3yb6a5up+I3pHGFyw9/PO6rO/hbPNQU:AnDiHDsEFr9HO6rO/NOU

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

GQrSWs3TiKJsppyp

Attributes

Install_directory
%AppData%
install_file
COM Surogate.exe
pastebin_url
https://pastebin.com/raw/EJ2UmS6u

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral18/memory/1388-1-0x0000000000D80000-0x0000000000D90000-memory.dmp	family_xworm
behavioral18/files/0x000d000000023b8a-59.dat	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
2484	powershell.exe
3644	powershell.exe
4016	powershell.exe
2380	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	y.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4964	COM Surogate.exe
4816	COM Surogate.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\COM Surogate = "C:\\Users\\Admin\\AppData\\Roaming\\COM Surogate.exe"	y.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
19	pastebin.com
20	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
16	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
3388	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2484	powershell.exe
2484	powershell.exe
3644	powershell.exe
3644	powershell.exe
4016	powershell.exe
4016	powershell.exe
2380	powershell.exe
2380	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1388	y.exe
Token: SeDebugPrivilege	2484	powershell.exe
Token: SeDebugPrivilege	3644	powershell.exe
Token: SeDebugPrivilege	4016	powershell.exe
Token: SeDebugPrivilege	2380	powershell.exe
Token: SeDebugPrivilege	1388	y.exe
Token: SeDebugPrivilege	4964	COM Surogate.exe
Token: SeDebugPrivilege	4816	COM Surogate.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 2484	1388	y.exe	87
PID 1388 wrote to memory of 2484	1388	y.exe	87
PID 1388 wrote to memory of 3644	1388	y.exe	93
PID 1388 wrote to memory of 3644	1388	y.exe	93
PID 1388 wrote to memory of 4016	1388	y.exe	95
PID 1388 wrote to memory of 4016	1388	y.exe	95
PID 1388 wrote to memory of 2380	1388	y.exe	97
PID 1388 wrote to memory of 2380	1388	y.exe	97
PID 1388 wrote to memory of 3388	1388	y.exe	101
PID 1388 wrote to memory of 3388	1388	y.exe	101

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\Loli-Mod-main\y.exe
"C:\Users\Admin\AppData\Local\Temp\Loli-Mod-main\y.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1388
- 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\Loli-Mod-main\y.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2484
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'y.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3644
- 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\COM Surogate.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4016
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'COM Surogate.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2380
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "COM Surogate" /tr "C:\Users\Admin\AppData\Roaming\COM Surogate.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3388

C:\Users\Admin\AppData\Roaming\COM Surogate.exe
"C:\Users\Admin\AppData\Roaming\COM Surogate.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4964

C:\Users\Admin\AppData\Roaming\COM Surogate.exe
"C:\Users\Admin\AppData\Roaming\COM Surogate.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4816

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

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\COM Surogate.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
140e754794fcf0f40c4f64a66d00e003

SHA1
9fb6756a539b563956d82c3601b08aacbcad9eb2

SHA256
207b7855aff1a21ac3207a3bb4ad81360aa7161883f9da78167303ccd940d859

SHA512
95475b05285d081c166bfa866d3578169e1da8be8fd15f209bb2b6196aab05b9e8ccfad2342df6b8b540f3757b7a43788c8282bc7cf6ff2e59d73e0f3d7ca0f7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
f31e01f2c0e458c7be9f6286e3c9a082

SHA1
97c7519c186fee0eeb94b3e8beda064c0ffd763a

SHA256
b953e3702f77e38c32d149a47ca2f8e3325a4f141eff9ede67f695a5d058ed4c

SHA512
99e88d97cd3fc1e8baa1e1315d4c7ed0af76696f78c964994e588b6d781bd771f2441769511773f09966d8cb1b64645ac0a527917ec36d4541c52da5968809ba

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tpn014jf.twg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\COM Surogate.exe

Filesize
38KB

MD5
9212396ec7e75aee632a2304c9050bb3

SHA1
ecd187b60d5619ba78ab54bdd43ab9419ca4a72d

SHA256
6b82fc5f7ed107648cdb24ebd5f2aa0cff16af9d736ac8455175498a7ad47266

SHA512
b00528fa583cbd17b4a7b3f474c8177a288d95ab0f80aca1381434cb15df7fe0b2a9b7d6ea95d4ec55e8ad279f7473db07dde82d1ec408a46cbb60b4e4c5d2a4

Download Submit
memory/1388-41-0x00007FFE642D3000-0x00007FFE642D5000-memory.dmp

Filesize
8KB

Download
memory/1388-1-0x0000000000D80000-0x0000000000D90000-memory.dmp

Filesize
64KB

Download
memory/1388-2-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

Filesize
10.8MB

Download
memory/1388-0-0x00007FFE642D3000-0x00007FFE642D5000-memory.dmp

Filesize
8KB

Download
memory/1388-58-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

Filesize
10.8MB

Download
memory/2484-4-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

Filesize
10.8MB

Download
memory/2484-18-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

Filesize
10.8MB

Download
memory/2484-15-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

Filesize
10.8MB

Download
memory/2484-14-0x000001BCF02F0000-0x000001BCF0312000-memory.dmp

Filesize
136KB

Download
memory/2484-3-0x00007FFE642D0000-0x00007FFE64D91000-memory.dmp

Filesize
10.8MB

Download