xworm | 19fcfef4db315e0d0a65bb7f13b35503559a00f2fb83298449fd719075f32c45

General

Target

Network.exe
Size

91KB
MD5

e14da59f36f995b0a212775074e25ce7
SHA1

574ba408726a83ec63a37782cc4e0cf2f009dabd
SHA256

19fcfef4db315e0d0a65bb7f13b35503559a00f2fb83298449fd719075f32c45
SHA512

6db0b5a34ca9e9e234b841cfb44bc5b5e9c3fea2585634702b8bfcf44af947e48b5c2ac4ec8d532b84b0c7c6aec6ea1b1155f5a75b7fdbe363b1eb2370c63b21
SSDEEP

1536:T+xqTU3nmojQskipBeEQPs0BoBONEX2J4wBMPjdbqYDK/z5iEcd64qLpt6x3OQ3q:TtTU3nmojQsk9PoXs4wBMBbqYU53gGtL

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
NetworkEXP.exe
pastebin_url
https://pastebin.com/raw/RgYXYwVV
telegram
https://api.telegram.org/bot6554307825:AAFiCM4YZlx7R1yb0K0d5pqenjePI2Nljfc/sendMessage?chat_id=6077384108

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2792-1-0x0000000000250000-0x000000000026E000-memory.dmp	family_xworm
behavioral1/files/0x000f000000023b44-59.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
2880	powershell.exe
412	powershell.exe
672	powershell.exe
4840	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	Network.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1924	NetworkEXP.exe
4964	NetworkEXP.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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NetworkEXP = "C:\\Users\\Admin\\AppData\\Roaming\\NetworkEXP.exe"	Network.exe

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

Web Service

T1102

flow	ioc
18	pastebin.com
19	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
15	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
4504	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2792	Network.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
672	powershell.exe
672	powershell.exe
4840	powershell.exe
4840	powershell.exe
2880	powershell.exe
2880	powershell.exe
412	powershell.exe
412	powershell.exe
2792	Network.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2792	Network.exe
Token: SeDebugPrivilege	672	powershell.exe
Token: SeDebugPrivilege	4840	powershell.exe
Token: SeDebugPrivilege	2880	powershell.exe
Token: SeDebugPrivilege	412	powershell.exe
Token: SeDebugPrivilege	2792	Network.exe
Token: SeDebugPrivilege	1924	NetworkEXP.exe
Token: SeDebugPrivilege	4964	NetworkEXP.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2792	Network.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2792 wrote to memory of 672	2792	Network.exe	90
PID 2792 wrote to memory of 672	2792	Network.exe	90
PID 2792 wrote to memory of 4840	2792	Network.exe	93
PID 2792 wrote to memory of 4840	2792	Network.exe	93
PID 2792 wrote to memory of 2880	2792	Network.exe	95
PID 2792 wrote to memory of 2880	2792	Network.exe	95
PID 2792 wrote to memory of 412	2792	Network.exe	98
PID 2792 wrote to memory of 412	2792	Network.exe	98
PID 2792 wrote to memory of 4504	2792	Network.exe	100
PID 2792 wrote to memory of 4504	2792	Network.exe	100

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\Network.exe
"C:\Users\Admin\AppData\Local\Temp\Network.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2792
- 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\Network.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:672
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Network.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4840
- 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\NetworkEXP.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2880
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'NetworkEXP.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:412
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "NetworkEXP" /tr "C:\Users\Admin\AppData\Roaming\NetworkEXP.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4504

C:\Users\Admin\AppData\Roaming\NetworkEXP.exe
C:\Users\Admin\AppData\Roaming\NetworkEXP.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1924

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

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\NetworkEXP.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
2a4825f4f95c5d3d72911c6e7eb902ca

SHA1
4c22133f24e77211313beb0831980029a53e7dde

SHA256
59eecad327a693c8b2e3a5932238cda2141c6a0afbba6a5587933c9f2c1025e0

SHA512
8e09a61c62a4b83f4f323b5b74f89cc26d708fd1fe646317f5f404af8d4d3fcf327f20f5e4a3b310786c0f639df2d17e1a51def08c95fa964928ad6c08c81386

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

Filesize
944B

MD5
b4b6d4cc52b5a3a71149b1f33d94d5de

SHA1
97d3dbdd24919eab70e3b14c68797cefc07e90dd

SHA256
da8c02ce00d5b1e6d4c3667465c7bbc14d7cd5227eb634f3d9690afd488267fe

SHA512
fc894f03709b83df7d2fca2779e1e60549078b67bcdbff0b61c8e5a802982210ae971309c1f92577573299288963ab5c95c6b38cbaedf53dc6062812c57a97af

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fuvejtvc.y1f.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
91KB

MD5
e14da59f36f995b0a212775074e25ce7

SHA1
574ba408726a83ec63a37782cc4e0cf2f009dabd

SHA256
19fcfef4db315e0d0a65bb7f13b35503559a00f2fb83298449fd719075f32c45

SHA512
6db0b5a34ca9e9e234b841cfb44bc5b5e9c3fea2585634702b8bfcf44af947e48b5c2ac4ec8d532b84b0c7c6aec6ea1b1155f5a75b7fdbe363b1eb2370c63b21

Download Submit
memory/672-13-0x00000199F4510000-0x00000199F4532000-memory.dmp

Filesize
136KB

Download
memory/672-18-0x00007FFB29E60000-0x00007FFB2A921000-memory.dmp

Filesize
10.8MB

Download
memory/672-15-0x00007FFB29E60000-0x00007FFB2A921000-memory.dmp

Filesize
10.8MB

Download
memory/672-14-0x00007FFB29E60000-0x00007FFB2A921000-memory.dmp

Filesize
10.8MB

Download
memory/672-3-0x00007FFB29E60000-0x00007FFB2A921000-memory.dmp

Filesize
10.8MB

Download
memory/2792-36-0x00007FFB29E63000-0x00007FFB29E65000-memory.dmp

Filesize
8KB

Download
memory/2792-0-0x00007FFB29E63000-0x00007FFB29E65000-memory.dmp

Filesize
8KB

Download
memory/2792-58-0x00007FFB29E60000-0x00007FFB2A921000-memory.dmp

Filesize
10.8MB

Download
memory/2792-2-0x00007FFB29E60000-0x00007FFB2A921000-memory.dmp

Filesize
10.8MB

Download
memory/2792-1-0x0000000000250000-0x000000000026E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads