xworm | 29774f3e9e2de12c7441f765f340cd661c38de279922961fc69488e2feffe67c

General

Target

ExcellentDll.exe
Size

345KB
MD5

69f478046e3ef37a710a452f796c9ef9
SHA1

f577229b18661c30938b8dd158019370be32c1d1
SHA256

29774f3e9e2de12c7441f765f340cd661c38de279922961fc69488e2feffe67c
SHA512

ee8994cd121e7437d9affc77988852a71895d92aea268517adeb8bf62fc7b532ea507a03ddc05f9a449e5729201d908690f3a9ac5350832d5c7c01328257eea8
SSDEEP

6144:Q0mluu8NPetOlmfMYdTQJzLtxfg6vgR6TNX5vcQY2MRcViNpqbCtULop+mG:Cou80CKQBxfPvgR6TVcLsiNpqmwok5

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

cameras-happen.gl.at.ply.gg:23386

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023b76-4.dat	family_xworm
behavioral2/memory/5032-24-0x0000000000FA0000-0x0000000000FBA000-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
4416	powershell.exe
2036	powershell.exe
3396	powershell.exe
5088	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	ExcellentFree.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	ExcellentDll.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
5032	ExcellentFree.exe
4608	ExLoader.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-1-5-21-1874072718-2205492803-118941907-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	ExcellentFree.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ExcellentDll.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4416	powershell.exe
4416	powershell.exe
2036	powershell.exe
2036	powershell.exe
3396	powershell.exe
3396	powershell.exe
5088	powershell.exe
5088	powershell.exe
5032	ExcellentFree.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	5032	ExcellentFree.exe
Token: SeDebugPrivilege	4416	powershell.exe
Token: SeDebugPrivilege	2036	powershell.exe
Token: SeDebugPrivilege	3396	powershell.exe
Token: SeDebugPrivilege	5088	powershell.exe
Token: SeDebugPrivilege	5032	ExcellentFree.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5032	ExcellentFree.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2808 wrote to memory of 5032	2808	ExcellentDll.exe	86
PID 2808 wrote to memory of 5032	2808	ExcellentDll.exe	86
PID 2808 wrote to memory of 4608	2808	ExcellentDll.exe	87
PID 2808 wrote to memory of 4608	2808	ExcellentDll.exe	87
PID 5032 wrote to memory of 4416	5032	ExcellentFree.exe	96
PID 5032 wrote to memory of 4416	5032	ExcellentFree.exe	96
PID 5032 wrote to memory of 2036	5032	ExcellentFree.exe	98
PID 5032 wrote to memory of 2036	5032	ExcellentFree.exe	98
PID 5032 wrote to memory of 3396	5032	ExcellentFree.exe	100
PID 5032 wrote to memory of 3396	5032	ExcellentFree.exe	100
PID 5032 wrote to memory of 5088	5032	ExcellentFree.exe	103
PID 5032 wrote to memory of 5088	5032	ExcellentFree.exe	103

C:\Users\Admin\AppData\Local\Temp\ExcellentDll.exe
"C:\Users\Admin\AppData\Local\Temp\ExcellentDll.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Users\Admin\AppData\Local\Temp\ExcellentFree.exe
  "C:\Users\Admin\AppData\Local\Temp\ExcellentFree.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5032
- - 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\ExcellentFree.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4416
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ExcellentFree.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2036
- - 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'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3396
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5088
- C:\Users\Admin\AppData\Local\Temp\ExLoader.exe
  "C:\Users\Admin\AppData\Local\Temp\ExLoader.exe"
  2⤵
  - Executes dropped EXE
  PID:4608

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

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
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
481c1608c2bec426ca209e8800611abd

SHA1
5df5a08760b0e5c56cb9daf768894435354d2651

SHA256
44e538c7570e175634f9929d350a79203730fcb753638f611a1dd4780ec430ed

SHA512
5a87762225beffbd34048fd0d617a75eff25ca6dfe47c258cdfad8c841f8b0b4144ae8c7ef04ee5de36987cb6ae0953499d5fa27b2100483a8042ee5e27d190c

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

Filesize
944B

MD5
22310ad6749d8cc38284aa616efcd100

SHA1
440ef4a0a53bfa7c83fe84326a1dff4326dcb515

SHA256
55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

SHA512
2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

Download Submit
C:\Users\Admin\AppData\Local\Temp\ExLoader.exe

Filesize
374KB

MD5
4183f8ec375a90742d38b1d69d136f92

SHA1
a630ecdb41aaa0982fad2775dd6114d20a5e0081

SHA256
ec8c87c21a99ec03772008304fe1a8a3261aa0beecafa7066c456069b66a33c6

SHA512
5c23e9cfdadb4de5d57130d6fead4b072ee3034554d8ba17b0d8935eac75f8986f9648ca225ea3c10757fe888cc049634872ee0278953906a735f5242d8ac060

Download Submit
C:\Users\Admin\AppData\Local\Temp\ExcellentFree.exe

Filesize
76KB

MD5
8cc568f48114422b0ca792dc8ce6009a

SHA1
bbe67dabd894ac2e45dc8027c6e3000f73ec97d7

SHA256
7a3d86182ae45a6be17ef36d1f12463b398c165a7e6fe4aa80e56ceab7f036eb

SHA512
45fe66a17c0473c0a4967d501d6f28f7a41fdce03ec31c46fb11ffd5fd848493578effbc36b4247ae49b987c41c3a559a9185dfdd0fd42468f30c310bea7bcc4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mhlgvf02.3zn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4416-25-0x0000020A21460000-0x0000020A21482000-memory.dmp

Filesize
136KB

Download
memory/5032-16-0x00007FFF06A33000-0x00007FFF06A35000-memory.dmp

Filesize
8KB

Download
memory/5032-24-0x0000000000FA0000-0x0000000000FBA000-memory.dmp

Filesize
104KB

Download
memory/5032-75-0x00007FFF06A30000-0x00007FFF074F1000-memory.dmp

Filesize
10.8MB

Download
memory/5032-76-0x00007FFF06A30000-0x00007FFF074F1000-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