xworm | c5dc5b0b78ffba40847d9ac8c6beca81d20e9678204ac4a8b35c09b0610d47e9

Analysis

max time kernel
139s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
24/07/2024, 02:46

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General

Target

47e602735f8059e787b432de5f00575c.exe
Size

1.8MB
MD5

47e602735f8059e787b432de5f00575c
SHA1

fd8dc8ba2b438de30599835d2cfc5b7fbb682c39
SHA256

c5dc5b0b78ffba40847d9ac8c6beca81d20e9678204ac4a8b35c09b0610d47e9
SHA512

06ec7541919fa2623a6a8883a15f8b24c5027a55d482a1aebc5b727a07d92b50feb36a3e80d80656cb6b38e9a69cc334fa5f5db6ff4d8c26b8fec6de82949610
SSDEEP

49152:QH7JbhzwEjVVaQ3Sn7GMYav7syYcONey40vIx3+I1:QH7JVznpVaHtvbOHtwx1

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

17.ip.gl.ply.gg:2351

<Xwormmm>:1234

Mutex

35P7l2L8pEsbVtqa

Attributes

Install_directory
%Temp%
install_file
$77Lol.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000c0000000233fe-17.dat	family_xworm
behavioral2/memory/1436-26-0x00000000003F0000-0x0000000000400000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
1236	powershell.exe
3168	powershell.exe
1608	powershell.exe
4752	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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	47e602735f8059e787b432de5f00575c.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77Lol.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77Lol.lnk	XClient.exe

Executes dropped EXE 4 IoCs

pid	Process
3176	Everything-1.4.1.1024.x64-Setup (1).exe
1436	XClient.exe
4352	$77Lol.exe
3656	$77Lol.exe

Loads dropped DLL 5 IoCs

pid	Process
3176	Everything-1.4.1.1024.x64-Setup (1).exe
3176	Everything-1.4.1.1024.x64-Setup (1).exe
3176	Everything-1.4.1.1024.x64-Setup (1).exe
3176	Everything-1.4.1.1024.x64-Setup (1).exe
3176	Everything-1.4.1.1024.x64-Setup (1).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-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\$77Lol = "C:\\Users\\Admin\\AppData\\Local\\Temp\\$77Lol.exe"	XClient.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
26	ip-api.com

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	Everything-1.4.1.1024.x64-Setup (1).exe

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
3600	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1236	powershell.exe
1236	powershell.exe
3168	powershell.exe
3168	powershell.exe
1608	powershell.exe
1608	powershell.exe
4752	powershell.exe
4752	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1436	XClient.exe
Token: SeDebugPrivilege	1236	powershell.exe
Token: SeDebugPrivilege	3168	powershell.exe
Token: SeDebugPrivilege	1608	powershell.exe
Token: SeDebugPrivilege	4752	powershell.exe
Token: SeDebugPrivilege	1436	XClient.exe
Token: SeDebugPrivilege	4352	$77Lol.exe
Token: SeDebugPrivilege	3656	$77Lol.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4132 wrote to memory of 3176	4132	47e602735f8059e787b432de5f00575c.exe	88
PID 4132 wrote to memory of 3176	4132	47e602735f8059e787b432de5f00575c.exe	88
PID 4132 wrote to memory of 3176	4132	47e602735f8059e787b432de5f00575c.exe	88
PID 4132 wrote to memory of 1436	4132	47e602735f8059e787b432de5f00575c.exe	89
PID 4132 wrote to memory of 1436	4132	47e602735f8059e787b432de5f00575c.exe	89
PID 1436 wrote to memory of 1236	1436	XClient.exe	94
PID 1436 wrote to memory of 1236	1436	XClient.exe	94
PID 1436 wrote to memory of 3168	1436	XClient.exe	96
PID 1436 wrote to memory of 3168	1436	XClient.exe	96
PID 1436 wrote to memory of 1608	1436	XClient.exe	98
PID 1436 wrote to memory of 1608	1436	XClient.exe	98
PID 1436 wrote to memory of 4752	1436	XClient.exe	100
PID 1436 wrote to memory of 4752	1436	XClient.exe	100
PID 1436 wrote to memory of 3600	1436	XClient.exe	103
PID 1436 wrote to memory of 3600	1436	XClient.exe	103

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\47e602735f8059e787b432de5f00575c.exe
"C:\Users\Admin\AppData\Local\Temp\47e602735f8059e787b432de5f00575c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Users\Admin\AppData\Local\Temp\Everything-1.4.1.1024.x64-Setup (1).exe
  "C:\Users\Admin\AppData\Local\Temp\Everything-1.4.1.1024.x64-Setup (1).exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:3176
- C:\Users\Admin\AppData\Local\Temp\XClient.exe
  "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1436
- - 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\XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1236
- - 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:3168
- - 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\$77Lol.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1608
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '$77Lol.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4752
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "$77Lol" /tr "C:\Users\Admin\AppData\Local\Temp\$77Lol.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3600

C:\Users\Admin\AppData\Local\Temp\$77Lol.exe
C:\Users\Admin\AppData\Local\Temp\$77Lol.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4352

C:\Users\Admin\AppData\Local\Temp\$77Lol.exe
C:\Users\Admin\AppData\Local\Temp\$77Lol.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3656

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

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\$77Lol.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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

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

Filesize
944B

MD5
a7cc007980e419d553568a106210549a

SHA1
c03099706b75071f36c3962fcc60a22f197711e0

SHA256
a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165

SHA512
b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666

Download Submit
C:\Users\Admin\AppData\Local\Temp\Everything-1.4.1.1024.x64-Setup (1).exe

Filesize
1.8MB

MD5
5036e609163e98f3ac06d5e82b677df8

SHA1
176db10a4cda7104f24eece2d87e1a664b7fb929

SHA256
b2afe799584c913532c673f99ade45113bf5a5b605a964ce9fa837f563b6fc21

SHA512
40c4332e2e4132fc7f3a5f0738a67e7725b329c4a4b0643fbc65f5d1de3ca4b6bf7374c2a722ea05f01a5e2ddd458344289fdb39bbb092a0b64e63eb168313e4

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

Filesize
38KB

MD5
965821262df54392375545c3fd29e693

SHA1
27ccc945b2e9d1c7583fc8d9fece02ac9f1428df

SHA256
12c05491a92b1f70e28adb05aa1c946aa047e0b6e6f8b972434bc37bf60af0fb

SHA512
e837bd4eccea4cac004b858ef847aadf43fdc8392323f81168ab6e5ba97caf1629af4e33cf98f7d2375844aeb8091a2dc6468f68a1724945320070da73a1f908

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cwmenmud.qxv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\nssC0A2.tmp\InstallOptions.dll

Filesize
15KB

MD5
ece25721125d55aa26cdfe019c871476

SHA1
b87685ae482553823bf95e73e790de48dc0c11ba

SHA256
c7fef6457989d97fecc0616a69947927da9d8c493f7905dc8475c748f044f3cf

SHA512
4e384735d03c943f5eb3396bb3a9cb42c9d8a5479fe2871de5b8bc18db4bbd6e2c5f8fd71b6840512a7249e12a1c63e0e760417e4baa3dc30f51375588410480

Download Submit
C:\Users\Admin\AppData\Local\Temp\nssC0A2.tmp\LangDLL.dll

Filesize
5KB

MD5
68b287f4067ba013e34a1339afdb1ea8

SHA1
45ad585b3cc8e5a6af7b68f5d8269c97992130b3

SHA256
18e8b40ba22c7a1687bd16e8d585380bc2773fff5002d7d67e9485fcc0c51026

SHA512
06c38bbb07fb55256f3cdc24e77b3c8f3214f25bfd140b521a39d167113bf307a7e8d24e445d510bc5e4e41d33c9173bb14e3f2a38bc29a0e3d08c1f0dca4bdb

Download Submit
C:\Users\Admin\AppData\Local\Temp\nssC0A2.tmp\System.dll

Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
memory/1236-56-0x000001B35FC40000-0x000001B35FC62000-memory.dmp

Filesize
136KB

Download
memory/1436-26-0x00000000003F0000-0x0000000000400000-memory.dmp

Filesize
64KB

Download
memory/1436-46-0x00007FFAF9510000-0x00007FFAF9FD1000-memory.dmp

Filesize
10.8MB

Download
memory/1436-27-0x00007FFAF9510000-0x00007FFAF9FD1000-memory.dmp

Filesize
10.8MB

Download
memory/1436-109-0x00007FFAF9510000-0x00007FFAF9FD1000-memory.dmp

Filesize
10.8MB

Download
memory/4132-25-0x00007FFAF9510000-0x00007FFAF9FD1000-memory.dmp

Filesize
10.8MB

Download
memory/4132-0-0x00007FFAF9513000-0x00007FFAF9515000-memory.dmp

Filesize
8KB

Download
memory/4132-3-0x00007FFAF9510000-0x00007FFAF9FD1000-memory.dmp

Filesize
10.8MB

Download
memory/4132-1-0x0000000000BD0000-0x0000000000DA4000-memory.dmp

Filesize
1.8MB

Download