xworm | 9d4991393962992db54a17e7aad1152a8965c3d51ac309d35768953f7e20dac5

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
25/11/2023, 06:20

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General

Target

tmp.exe
Size

235KB
MD5

715d9e1786839981fc5aa6ec4c9df1a6
SHA1

e4f3d03f3e92faa404669b55c7c28aba157a44ac
SHA256

9d4991393962992db54a17e7aad1152a8965c3d51ac309d35768953f7e20dac5
SHA512

be181551a7c705e9b18c812defbc86790bd32f67da474e61dd07fc8cd36030b58e7cf908a1db2fe826ec0ec8ed3d08c0b42bda1a8731213424ba7e5ef477c534
SSDEEP

3072:FjToRFRb8MPOin68SKfbzxcwg7es6/Vsb8VKTu549oJMfF/H9N3Ky9NzLnQ:2RFRbVX6UhcX7elbKTua9bfF/H9d9n

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

127.0.0.1:8888

93.123.85.68:8888

Attributes

Install_directory
%ProgramData%
install_file
WinRar.exe
telegram
https://api.telegram.org/bot5831501082:AAELkQ6xM7p_N7x74e8Xrku-_ibYekoBMcY

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral2/memory/3808-0-0x0000000000AF0000-0x0000000000B30000-memory.dmp	family_xworm
behavioral2/files/0x0009000000022c18-73.dat	family_xworm
behavioral2/files/0x0009000000022c18-74.dat	family_xworm
behavioral2/files/0x0009000000022c18-79.dat	family_xworm
behavioral2/files/0x0009000000022c18-83.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

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-1-5-21-3125601242-331447593-1512828465-1000\Control Panel\International\Geo\Nation	tmp.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
3788	WinRar.exe
2196	WinRar.exe
1292	WinRar.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-1-5-21-3125601242-331447593-1512828465-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WinRar = "C:\\ProgramData\\WinRar.exe"	tmp.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
14	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
3476	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
576	powershell.exe
576	powershell.exe
4612	powershell.exe
4612	powershell.exe
2976	powershell.exe
2976	powershell.exe
3132	powershell.exe
3132	powershell.exe
3808	tmp.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	3808	tmp.exe
Token: SeDebugPrivilege	576	powershell.exe
Token: SeDebugPrivilege	4612	powershell.exe
Token: SeDebugPrivilege	2976	powershell.exe
Token: SeDebugPrivilege	3132	powershell.exe
Token: SeDebugPrivilege	3808	tmp.exe
Token: SeDebugPrivilege	3788	WinRar.exe
Token: SeDebugPrivilege	2196	WinRar.exe
Token: SeDebugPrivilege	1292	WinRar.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3808	tmp.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3808 wrote to memory of 576	3808	tmp.exe	88
PID 3808 wrote to memory of 576	3808	tmp.exe	88
PID 3808 wrote to memory of 4612	3808	tmp.exe	93
PID 3808 wrote to memory of 4612	3808	tmp.exe	93
PID 3808 wrote to memory of 2976	3808	tmp.exe	95
PID 3808 wrote to memory of 2976	3808	tmp.exe	95
PID 3808 wrote to memory of 3132	3808	tmp.exe	98
PID 3808 wrote to memory of 3132	3808	tmp.exe	98
PID 3808 wrote to memory of 3476	3808	tmp.exe	102
PID 3808 wrote to memory of 3476	3808	tmp.exe	102

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\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3808
- 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\tmp.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:576
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'tmp.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4612
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\WinRar.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2976
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WinRar.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3132
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WinRar" /tr "C:\ProgramData\WinRar.exe"
  2⤵
  - Creates scheduled task(s)
  PID:3476

C:\ProgramData\WinRar.exe
C:\ProgramData\WinRar.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3788

C:\ProgramData\WinRar.exe
C:\ProgramData\WinRar.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2196

C:\ProgramData\WinRar.exe
C:\ProgramData\WinRar.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\WinRar.exe

Filesize
235KB

MD5
715d9e1786839981fc5aa6ec4c9df1a6

SHA1
e4f3d03f3e92faa404669b55c7c28aba157a44ac

SHA256
9d4991393962992db54a17e7aad1152a8965c3d51ac309d35768953f7e20dac5

SHA512
be181551a7c705e9b18c812defbc86790bd32f67da474e61dd07fc8cd36030b58e7cf908a1db2fe826ec0ec8ed3d08c0b42bda1a8731213424ba7e5ef477c534

Download Submit
C:\ProgramData\WinRar.exe

Filesize
235KB

MD5
715d9e1786839981fc5aa6ec4c9df1a6

SHA1
e4f3d03f3e92faa404669b55c7c28aba157a44ac

SHA256
9d4991393962992db54a17e7aad1152a8965c3d51ac309d35768953f7e20dac5

SHA512
be181551a7c705e9b18c812defbc86790bd32f67da474e61dd07fc8cd36030b58e7cf908a1db2fe826ec0ec8ed3d08c0b42bda1a8731213424ba7e5ef477c534

Download Submit
C:\ProgramData\WinRar.exe

Filesize
235KB

MD5
715d9e1786839981fc5aa6ec4c9df1a6

SHA1
e4f3d03f3e92faa404669b55c7c28aba157a44ac

SHA256
9d4991393962992db54a17e7aad1152a8965c3d51ac309d35768953f7e20dac5

SHA512
be181551a7c705e9b18c812defbc86790bd32f67da474e61dd07fc8cd36030b58e7cf908a1db2fe826ec0ec8ed3d08c0b42bda1a8731213424ba7e5ef477c534

Download Submit
C:\ProgramData\WinRar.exe

Filesize
235KB

MD5
715d9e1786839981fc5aa6ec4c9df1a6

SHA1
e4f3d03f3e92faa404669b55c7c28aba157a44ac

SHA256
9d4991393962992db54a17e7aad1152a8965c3d51ac309d35768953f7e20dac5

SHA512
be181551a7c705e9b18c812defbc86790bd32f67da474e61dd07fc8cd36030b58e7cf908a1db2fe826ec0ec8ed3d08c0b42bda1a8731213424ba7e5ef477c534

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\WinRar.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
5f0ddc7f3691c81ee14d17b419ba220d

SHA1
f0ef5fde8bab9d17c0b47137e014c91be888ee53

SHA256
a31805264b8b13ce4145f272cb2830728c186c46e314b48514d636866217add5

SHA512
2ce7c2a0833f581297c13dd88ccfcd36bf129d2b5d7718c52b1d67c97cbd8fc93abc085a040229a0fd712e880c690de7f6b996b0b47c46a091fabb7931be58d3

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

Filesize
944B

MD5
6d14ccefeb263594e60b1765e131f7a3

SHA1
4a9ebdc0dff58645406c40b7b140e1b174756721

SHA256
57cd435c8b2bf10a2c77698301789c032e1b6b623ff1420c72e8bca0b10f1e5c

SHA512
2013a26123f72a4106524fd9d7389ac4654f97033d22707efc084fb2a3ad01c298eb64f01bb64861ab603615022dbe7cfc97475346edb16b3ba72e905127f101

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

Filesize
944B

MD5
65e4f01c24b55569d54d23b8efd0c8d5

SHA1
2c58f21418af8c0f1e118a7f3cf17d8448a8be64

SHA256
c1e9cf9a0865152d180419cb3ebc77538bdbdc9d1e633eb71ad6871fbc4d4763

SHA512
afaf0c200caba78650aee46bd62994c5becc073c22cb62404f783b257c78a72061e240b8678c38790b2cec1e41429161b13c6d92cc9817fe70e86abff5af2056

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pbinpruy.05w.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/576-16-0x000001A6FF230000-0x000001A6FF240000-memory.dmp

Filesize
64KB

Download
memory/576-19-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/576-15-0x000001A6FF230000-0x000001A6FF240000-memory.dmp

Filesize
64KB

Download
memory/576-14-0x000001A6FF230000-0x000001A6FF240000-memory.dmp

Filesize
64KB

Download
memory/576-10-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/576-3-0x000001A6FF190000-0x000001A6FF1B2000-memory.dmp

Filesize
136KB

Download
memory/1292-84-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/2196-82-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/2196-81-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/2976-47-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/2976-48-0x0000018E5EF10000-0x0000018E5EF20000-memory.dmp

Filesize
64KB

Download
memory/2976-49-0x0000018E5EF10000-0x0000018E5EF20000-memory.dmp

Filesize
64KB

Download
memory/2976-52-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/3132-68-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/3132-63-0x0000014B4C820000-0x0000014B4C830000-memory.dmp

Filesize
64KB

Download
memory/3132-62-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/3132-64-0x0000014B4C820000-0x0000014B4C830000-memory.dmp

Filesize
64KB

Download
memory/3132-66-0x0000014B4C820000-0x0000014B4C830000-memory.dmp

Filesize
64KB

Download
memory/3788-77-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/3788-75-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/3808-45-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/3808-0-0x0000000000AF0000-0x0000000000B30000-memory.dmp

Filesize
256KB

Download
memory/3808-50-0x0000000002C10000-0x0000000002C20000-memory.dmp

Filesize
64KB

Download
memory/3808-2-0x0000000002C10000-0x0000000002C20000-memory.dmp

Filesize
64KB

Download
memory/3808-1-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/4612-35-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download
memory/4612-33-0x0000023AB9AD0000-0x0000023AB9AE0000-memory.dmp

Filesize
64KB

Download
memory/4612-22-0x0000023AB9AD0000-0x0000023AB9AE0000-memory.dmp

Filesize
64KB

Download
memory/4612-21-0x00007FF9C5AF0000-0x00007FF9C65B1000-memory.dmp

Filesize
10.8MB

Download