xworm | ac916cba0427c21dede94cb1b3bb061ea7502d865a8964918ea976948b27af48

General

Target

Excellent3.0.exe
Size

76KB
MD5

401131f795244c4e21d3e50f7612f85c
SHA1

98b156b8f67b98cd8f4640a0c17d9b85c87cf516
SHA256

ac916cba0427c21dede94cb1b3bb061ea7502d865a8964918ea976948b27af48
SHA512

5957f631d0a0c99b76fccd000de8f9d3d6084cdfc24d2cfa832045da43eda93b456ecfc2fe3a7457b761a4a698f4cd287a535da144489efc6fd85a6b531ee6e2
SSDEEP

1536:1aobhfsGh035rMe4VeC8Tl+bxPBvtzfwl6kJK6vlbYOB7p7Y+k:1aU25rMRVF8B+bDvSNkylcOB71Y+k

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

used-billion.gl.at.ply.gg:43161

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4764-1-0x0000000000F10000-0x0000000000F2A000-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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
6080	powershell.exe
2148	powershell.exe
5080	powershell.exe
2088	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-1-5-21-100612193-3312047696-905266872-1000\Control Panel\International\Geo\Nation	Excellent3.0.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	Excellent3.0.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	Excellent3.0.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-1-5-21-100612193-3312047696-905266872-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	Excellent3.0.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
6080	powershell.exe
6080	powershell.exe
2148	powershell.exe
2148	powershell.exe
5080	powershell.exe
5080	powershell.exe
2088	powershell.exe
2088	powershell.exe
4764	Excellent3.0.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4764	Excellent3.0.exe
Token: SeDebugPrivilege	6080	powershell.exe
Token: SeDebugPrivilege	2148	powershell.exe
Token: SeDebugPrivilege	5080	powershell.exe
Token: SeDebugPrivilege	2088	powershell.exe
Token: SeDebugPrivilege	4764	Excellent3.0.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4764	Excellent3.0.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4764 wrote to memory of 6080	4764	Excellent3.0.exe	94
PID 4764 wrote to memory of 6080	4764	Excellent3.0.exe	94
PID 4764 wrote to memory of 2148	4764	Excellent3.0.exe	96
PID 4764 wrote to memory of 2148	4764	Excellent3.0.exe	96
PID 4764 wrote to memory of 5080	4764	Excellent3.0.exe	98
PID 4764 wrote to memory of 5080	4764	Excellent3.0.exe	98
PID 4764 wrote to memory of 2088	4764	Excellent3.0.exe	100
PID 4764 wrote to memory of 2088	4764	Excellent3.0.exe	100

C:\Users\Admin\AppData\Local\Temp\Excellent3.0.exe
"C:\Users\Admin\AppData\Local\Temp\Excellent3.0.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:4764
- 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\Excellent3.0.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:6080
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Excellent3.0.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2148
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5080
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
a43e653ffb5ab07940f4bdd9cc8fade4

SHA1
af43d04e3427f111b22dc891c5c7ee8a10ac4123

SHA256
c4c53abb13e99475aebfbe9fec7a8fead81c14c80d9dcc2b81375304f3a683fe

SHA512
62a97e95e1f19a8d4302847110dae44f469877eed6aa8ea22345c6eb25ee220e7d310fa0b7ec5df42356815421c0af7c46a0f1fee8933cc446641800eda6cd1b

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

Filesize
944B

MD5
76692775e4781f0c9f0092f5804cfdb1

SHA1
6740e4e4110028c62282ee1e7eb8be576a2bc23a

SHA256
0c451ff3823450d544066237cbfb08556b7ca36c4a0ea085055f69ab35795b00

SHA512
6e0731e3736594d9e86da2fc33e08a663f29100074cc8d46e2716123c946b9eb150c804c7cf8428cac631e1cff984663d41ce3b5e1e77965bd8e2ecf0742af34

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

Filesize
944B

MD5
84a57d62cb0de58cf0d7e48560a37a14

SHA1
2dc80f746048d04d7f56649bd466b905d61e130e

SHA256
948316416d57e501b97e8670be33bf698484090e2c6fd595d318dab8fae6e54d

SHA512
00551a319a19b635b65f0020441e280b1098036b3f6cbb05a7d550728efaf0775844f838e701cfff3933cc84c1cb1bf440df4bde56f24f75d244b7d9a9f79ddd

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

Filesize
944B

MD5
9c740b7699e2363ac4ecdf496520ca35

SHA1
aa8691a8c56500d82c5fc8c35209bc6fe50ab1d9

SHA256
be96c91b62ba9ba7072ab89e66543328c9e4395150f9dbe8067332d94a3ecc61

SHA512
8885683f96353582eb871209e766e7eba1a72a2837ce27ea298b7b5b169621d1fa3fce25346b6bfd258b52642644234da9559d4e765a2023a5a5fc1f544cc7af

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rdlutlmc.shr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4764-1-0x0000000000F10000-0x0000000000F2A000-memory.dmp

Filesize
104KB

Download
memory/4764-0-0x00007FFEE77E3000-0x00007FFEE77E5000-memory.dmp

Filesize
8KB

Download
memory/4764-57-0x00007FFEE77E0000-0x00007FFEE82A1000-memory.dmp

Filesize
10.8MB

Download
memory/4764-56-0x00007FFEE77E0000-0x00007FFEE82A1000-memory.dmp

Filesize
10.8MB

Download
memory/6080-11-0x000001CA1BFB0000-0x000001CA1BFD2000-memory.dmp

Filesize
136KB

Download
memory/6080-17-0x00007FFEE77E0000-0x00007FFEE82A1000-memory.dmp

Filesize
10.8MB

Download
memory/6080-14-0x00007FFEE77E0000-0x00007FFEE82A1000-memory.dmp

Filesize
10.8MB

Download
memory/6080-13-0x00007FFEE77E0000-0x00007FFEE82A1000-memory.dmp

Filesize
10.8MB

Download
memory/6080-12-0x00007FFEE77E0000-0x00007FFEE82A1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads