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/3708-24-0x0000000000600000-0x000000000061A000-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
2692	powershell.exe
2320	powershell.exe
4832	powershell.exe
3028	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	ExcellentDll.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	ExcellentFree.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
3708	ExcellentFree.exe
2784	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
4832	powershell.exe
4832	powershell.exe
3028	powershell.exe
3028	powershell.exe
2692	powershell.exe
2692	powershell.exe
2320	powershell.exe
2320	powershell.exe
3708	ExcellentFree.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3708	ExcellentFree.exe
Token: SeDebugPrivilege	4832	powershell.exe
Token: SeDebugPrivilege	3028	powershell.exe
Token: SeDebugPrivilege	2692	powershell.exe
Token: SeDebugPrivilege	2320	powershell.exe
Token: SeDebugPrivilege	3708	ExcellentFree.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3708	ExcellentFree.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2580 wrote to memory of 3708	2580	ExcellentDll.exe	86
PID 2580 wrote to memory of 3708	2580	ExcellentDll.exe	86
PID 2580 wrote to memory of 2784	2580	ExcellentDll.exe	87
PID 2580 wrote to memory of 2784	2580	ExcellentDll.exe	87
PID 3708 wrote to memory of 4832	3708	ExcellentFree.exe	96
PID 3708 wrote to memory of 4832	3708	ExcellentFree.exe	96
PID 3708 wrote to memory of 3028	3708	ExcellentFree.exe	98
PID 3708 wrote to memory of 3028	3708	ExcellentFree.exe	98
PID 3708 wrote to memory of 2692	3708	ExcellentFree.exe	100
PID 3708 wrote to memory of 2692	3708	ExcellentFree.exe	100
PID 3708 wrote to memory of 2320	3708	ExcellentFree.exe	102
PID 3708 wrote to memory of 2320	3708	ExcellentFree.exe	102

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:2580
- 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:3708
- - 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:4832
- - 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:3028
- - 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:2692
- - 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:2320
- C:\Users\Admin\AppData\Local\Temp\ExLoader.exe
  "C:\Users\Admin\AppData\Local\Temp\ExLoader.exe"
  2⤵
  - Executes dropped EXE
  PID:2784

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

Replay Monitor

Loading Replay Monitor...

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
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

Filesize
944B

MD5
0934b342f43434a61f70d024e24da657

SHA1
3b0271551775db835fe890e4c8ee33dbf865dd25

SHA256
67d7131d1a0ced6b906f2578bb0593629d6aaaedb4b843dc51912d3a35f79da2

SHA512
b2881bcf88ab4083e3983609acd6567c793f4669ceced7b0ba5a2c0725adf63aaba0816a504797a246f375d87139816ee819535697912977c0df5045fa7d1853

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

Filesize
944B

MD5
bb2eedee4c30e9112b9ad201df298eff

SHA1
4bf7554943407f3770b5e831d4415bb1c752a08b

SHA256
469fe27cde144100b608675418703304c36e811801a88ad482f48ff4cd61931e

SHA512
f24575654a04d5f12dc71b9c732ceae91fc5e29be246722ccb763d3718fadd5cf515c03fdf082674b4be129a63040d15f1768a301da7eedc23f4dca36f0357b6

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_lk31mnrt.wla.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3708-21-0x00007FFF06613000-0x00007FFF06615000-memory.dmp

Filesize
8KB

Download
memory/3708-24-0x0000000000600000-0x000000000061A000-memory.dmp

Filesize
104KB

Download
memory/3708-75-0x00007FFF06610000-0x00007FFF070D1000-memory.dmp

Filesize
10.8MB

Download
memory/3708-76-0x00007FFF06610000-0x00007FFF070D1000-memory.dmp

Filesize
10.8MB

Download
memory/4832-34-0x000002D0F48C0000-0x000002D0F48E2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads