xworm | 7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3

General

Target

7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe
Size

62KB
MD5

27073262c053ce8de5d3ca9cd80b04c0
SHA1

f4958421fb58916bba8f78c914934eacbc4685f2
SHA256

7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3
SHA512

53ebd126fc6a47bd3f73ddbc63f0963a3937348f7a1564af1d61d17536cef5a9c1618f38f73f501ccbbad80eeb83d569dadae266430ee69adfe9587a9359741b
SSDEEP

768:9cSO/q11X3zEBAd+sSphlECCuyyzdXMgr9tLWbspkpNUfcTjYmQ6g8KOHhH9+0nu:Sj6GsSQyZMe9tSbspkYeK68OH22u

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:55303

NareReti-22747.portmap.host:55303

NareReti-55303.portmap.host:55303

Attributes

Install_directory
%ProgramData%
install_file
Updater.exe
telegram
https://api.telegram.org/bot6840191997:AAGAMBGwNzL_wSKuYrOBbKDIGphrx-yRlhI

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4656-1-0x0000000000350000-0x0000000000366000-memory.dmp	family_xworm
behavioral2/files/0x000e000000023b85-58.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
1424	powershell.exe
1020	powershell.exe
1812	powershell.exe
1712	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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Updater.lnk	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Updater.lnk	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe

Executes dropped EXE 2 IoCs

pid	Process
3920	Updater.exe
800	Updater.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Updater = "C:\\ProgramData\\Updater.exe"	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.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
13	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
2368	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1424	powershell.exe
1424	powershell.exe
1020	powershell.exe
1020	powershell.exe
1812	powershell.exe
1812	powershell.exe
1712	powershell.exe
1712	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe
Token: SeDebugPrivilege	1424	powershell.exe
Token: SeDebugPrivilege	1020	powershell.exe
Token: SeDebugPrivilege	1812	powershell.exe
Token: SeDebugPrivilege	1712	powershell.exe
Token: SeDebugPrivilege	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe
Token: SeDebugPrivilege	3920	Updater.exe
Token: SeDebugPrivilege	800	Updater.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 1424	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe	87
PID 4656 wrote to memory of 1424	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe	87
PID 4656 wrote to memory of 1020	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe	89
PID 4656 wrote to memory of 1020	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe	89
PID 4656 wrote to memory of 1812	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe	91
PID 4656 wrote to memory of 1812	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe	91
PID 4656 wrote to memory of 1712	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe	93
PID 4656 wrote to memory of 1712	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe	93
PID 4656 wrote to memory of 2368	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe	95
PID 4656 wrote to memory of 2368	4656	7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe	95

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\7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe
"C:\Users\Admin\AppData\Local\Temp\7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4656
- 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\7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1424
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1020
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Updater.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1812
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Updater.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1712
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Updater" /tr "C:\ProgramData\Updater.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2368

C:\ProgramData\Updater.exe
C:\ProgramData\Updater.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3920

C:\ProgramData\Updater.exe
C:\ProgramData\Updater.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:800

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

Exfiltration

Impact

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Downloads

C:\ProgramData\Updater.exe

Filesize
62KB

MD5
27073262c053ce8de5d3ca9cd80b04c0

SHA1
f4958421fb58916bba8f78c914934eacbc4685f2

SHA256
7d6ff01e6a8805bcc7678aabd3c71ba8493bc0e93cfa05c3c4a9621d481b26a3

SHA512
53ebd126fc6a47bd3f73ddbc63f0963a3937348f7a1564af1d61d17536cef5a9c1618f38f73f501ccbbad80eeb83d569dadae266430ee69adfe9587a9359741b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Updater.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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
944B

MD5
cfb22e9b9c08bb1cfe944b622eb7adcb

SHA1
a299c701fb4da010999e61f9127262c7deb4fd97

SHA256
f60461e45422c16638ab514984d3a3b4e1ec8522c224543046a7d8fdf0090af2

SHA512
67962f0976a16c4323d14d4f7f6fe23bf1145db115be59b25f8fdfbe49d2d0672ed868ce7d69cb33b790f50f37b1187d5bd64fddfeb20260c88d4c5f75be4a57

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

Filesize
944B

MD5
e5663972c1caaba7088048911c758bf3

SHA1
3462dea0f9c2c16a9c3afdaef8bbb1f753c1c198

SHA256
9f7f29a4696876cadca3f14d7e43f9ede0c97fd64be3f5d94bda49a91b6a419e

SHA512
ff4e72c46cf083de62baa2ce2661555dd91b5f144294015f7b262fd4500cb67fe80e1871a82da63b607e3e9cef401f4b73c587bf1134637881ecad51aad1eddc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fr4yqsrq.r3a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1424-4-0x00007FFDC4010000-0x00007FFDC4AD1000-memory.dmp

Filesize
10.8MB

Download
memory/1424-18-0x00007FFDC4010000-0x00007FFDC4AD1000-memory.dmp

Filesize
10.8MB

Download
memory/1424-15-0x00007FFDC4010000-0x00007FFDC4AD1000-memory.dmp

Filesize
10.8MB

Download
memory/1424-5-0x00007FFDC4010000-0x00007FFDC4AD1000-memory.dmp

Filesize
10.8MB

Download
memory/1424-3-0x0000025655BB0000-0x0000025655BD2000-memory.dmp

Filesize
136KB

Download
memory/4656-0-0x00007FFDC4013000-0x00007FFDC4015000-memory.dmp

Filesize
8KB

Download
memory/4656-57-0x00007FFDC4010000-0x00007FFDC4AD1000-memory.dmp

Filesize
10.8MB

Download
memory/4656-2-0x00007FFDC4010000-0x00007FFDC4AD1000-memory.dmp

Filesize
10.8MB

Download
memory/4656-1-0x0000000000350000-0x0000000000366000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads