xworm | 68a22c99d75a30d9bd60980eb78315d505b250d8a7093e545ac5a7b1c39f67ae

General

Target

Nerest/Nerest Crack.exe
Size

115KB
MD5

ae7e7ad5099597db8f14ee26fd5cee52
SHA1

53fe58268d74ca2c2caf5bce1449e488a546d30d
SHA256

8a441778a38026427e889a79b248fdffa17edf31da5fceff03de1a9611d0f629
SHA512

7d757ec1567cca840e282d72ad89996083f22b30d858a9617cc299dcaa1cdc290e20b30db3bfbbaa1c59510e87b74d180461ba25e76b626bd7405e45de6e08d8
SSDEEP

1536:QH3h0qpEK83YpNQSUEbRRfk7SZF6/Og4Zd:QXByK836rbRmS6Og47

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

you-cigarette.gl.at.ply.gg:30434

Attributes

Install_directory
%Public%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4996-1-0x0000000000260000-0x0000000000282000-memory.dmp	family_xworm
behavioral2/files/0x000b000000023cc5-59.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
380	powershell.exe
3268	powershell.exe
348	powershell.exe
2728	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	Nerest Crack.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
4272	XClient.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Public\\XClient.exe"	Nerest Crack.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
14	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
4432	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
380	powershell.exe
380	powershell.exe
3268	powershell.exe
3268	powershell.exe
348	powershell.exe
348	powershell.exe
2728	powershell.exe
2728	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4996	Nerest Crack.exe
Token: SeDebugPrivilege	380	powershell.exe
Token: SeDebugPrivilege	3268	powershell.exe
Token: SeDebugPrivilege	348	powershell.exe
Token: SeDebugPrivilege	2728	powershell.exe
Token: SeDebugPrivilege	4996	Nerest Crack.exe
Token: SeDebugPrivilege	4272	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4996 wrote to memory of 380	4996	Nerest Crack.exe	87
PID 4996 wrote to memory of 380	4996	Nerest Crack.exe	87
PID 4996 wrote to memory of 3268	4996	Nerest Crack.exe	89
PID 4996 wrote to memory of 3268	4996	Nerest Crack.exe	89
PID 4996 wrote to memory of 348	4996	Nerest Crack.exe	91
PID 4996 wrote to memory of 348	4996	Nerest Crack.exe	91
PID 4996 wrote to memory of 2728	4996	Nerest Crack.exe	93
PID 4996 wrote to memory of 2728	4996	Nerest Crack.exe	93
PID 4996 wrote to memory of 4432	4996	Nerest Crack.exe	97
PID 4996 wrote to memory of 4432	4996	Nerest Crack.exe	97

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\Nerest\Nerest Crack.exe
"C:\Users\Admin\AppData\Local\Temp\Nerest\Nerest Crack.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4996
- 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\Nerest\Nerest Crack.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:380
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Nerest Crack.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3268
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:348
- 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:2728
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Public\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4432

C:\Users\Public\XClient.exe
C:\Users\Public\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4272

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:\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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
b7189719e6df2c3dfc76197ec3f31f7a

SHA1
effd91412deadc87cc10ef76cdecc1e0b54b6d41

SHA256
1c72fa37d078b92c7e900b2e3d17c43c34d936a696a8ddf6c519f4a80308b892

SHA512
2df1f1d45844da7ffb17cdfb411f223e9c614c00f5cf7eb5ba92bf7ba174875af2a515371208286c95c0479c934ae2c6a83dfc0b54380be89db1eddd19faf978

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

Filesize
944B

MD5
c696571a7649f3520208684d6a3c0c27

SHA1
8bc9bbbbfe223c8a895d9d2511ae5080e0ed0ffc

SHA256
dbbcbd6df439157b46682fd2558fc3afa07080bc8e6116aba6b7fe992c066c3d

SHA512
9bdbb29c6cc188bac510890561aa0d85c1237306a3f67bbcec7d669fb0be5be8b24773f7adbd0dba5d548d28ba943c6bec14853499236315315b8485f280bf7d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1vb5w0en.42k.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\XClient.exe

Filesize
115KB

MD5
ae7e7ad5099597db8f14ee26fd5cee52

SHA1
53fe58268d74ca2c2caf5bce1449e488a546d30d

SHA256
8a441778a38026427e889a79b248fdffa17edf31da5fceff03de1a9611d0f629

SHA512
7d757ec1567cca840e282d72ad89996083f22b30d858a9617cc299dcaa1cdc290e20b30db3bfbbaa1c59510e87b74d180461ba25e76b626bd7405e45de6e08d8

Download Submit
memory/380-18-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/380-15-0x0000010F43010000-0x0000010F43032000-memory.dmp

Filesize
136KB

Download
memory/380-5-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/380-4-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/380-3-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/4996-0-0x00007FF995B43000-0x00007FF995B45000-memory.dmp

Filesize
8KB

Download
memory/4996-51-0x00007FF995B43000-0x00007FF995B45000-memory.dmp

Filesize
8KB

Download
memory/4996-2-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/4996-58-0x00007FF995B40000-0x00007FF996601000-memory.dmp

Filesize
10.8MB

Download
memory/4996-1-0x0000000000260000-0x0000000000282000-memory.dmp

Filesize
136KB

Download
memory/4996-62-0x000000001BE30000-0x000000001BE3C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads