xworm | 087f62458517a3fac322b3c8feb38959377bc1bbbee6174fbeb41b6c25a4499c

General

Target

New.exe
Size

39KB
MD5

b4d443314462b4df0dc8b7c33085b0a2
SHA1

7aa1bd73ba5ca27d97f0c714fdd86cfdd887304b
SHA256

087f62458517a3fac322b3c8feb38959377bc1bbbee6174fbeb41b6c25a4499c
SHA512

3184a175f7219c1253ce2cfadda36e9d50b2845802419b60da84175cb41096c85bdbe265665558d76a723e7286a4b5f99aaacf2fef5200aa0bc925ea23f38733
SSDEEP

768:8vuzg/d8wQCu6v6hCuuJf27P1fFWPG9/a6OOwhYjmbF:dz68wNhwCuuJfUFv9/a6OOwGSJ

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

46.146.46.81:7000:7000

46.146.46.81:7000

Mutex

FaNJqzJhSyTDj5Pr

Attributes

Install_directory
%AppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/4436-1-0x00000000004F0000-0x0000000000500000-memory.dmp	family_xworm
behavioral1/files/0x002200000002aa71-57.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
900	powershell.exe
3116	powershell.exe
3168	powershell.exe
4112	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
3696	svchost.exe
2372	svchost.exe
3956	svchost.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-1-5-21-3587106988-279496464-3440778474-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	New.exe

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
2480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3116	powershell.exe
3116	powershell.exe
3168	powershell.exe
3168	powershell.exe
4112	powershell.exe
4112	powershell.exe
900	powershell.exe
900	powershell.exe
4436	New.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4436	New.exe
Token: SeDebugPrivilege	3116	powershell.exe
Token: SeDebugPrivilege	3168	powershell.exe
Token: SeDebugPrivilege	4112	powershell.exe
Token: SeDebugPrivilege	900	powershell.exe
Token: SeDebugPrivilege	4436	New.exe
Token: SeDebugPrivilege	3696	svchost.exe
Token: SeDebugPrivilege	2372	svchost.exe
Token: SeDebugPrivilege	3956	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4436	New.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4436 wrote to memory of 3116	4436	New.exe	77
PID 4436 wrote to memory of 3116	4436	New.exe	77
PID 4436 wrote to memory of 3168	4436	New.exe	79
PID 4436 wrote to memory of 3168	4436	New.exe	79
PID 4436 wrote to memory of 4112	4436	New.exe	81
PID 4436 wrote to memory of 4112	4436	New.exe	81
PID 4436 wrote to memory of 900	4436	New.exe	83
PID 4436 wrote to memory of 900	4436	New.exe	83
PID 4436 wrote to memory of 2480	4436	New.exe	85
PID 4436 wrote to memory of 2480	4436	New.exe	85

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\New.exe
"C:\Users\Admin\AppData\Local\Temp\New.exe"
1⤵
- 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:4436
- 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\New.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3116
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'New.exe'
  2⤵
  - 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\Roaming\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4112
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:900
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2480

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3696

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2372

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3956

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

1

T1012

System Information Discovery

1

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
944B

MD5
e3840d9bcedfe7017e49ee5d05bd1c46

SHA1
272620fb2605bd196df471d62db4b2d280a363c6

SHA256
3ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f

SHA512
76adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376

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

Filesize
944B

MD5
051a74485331f9d9f5014e58ec71566c

SHA1
4ed0256a84f2e95609a0b4d5c249bca624db8fe4

SHA256
3f67e4ba795fd89d33e9a1fe7547e297a82ae50b8f25eedc2b33a27866b28888

SHA512
1f15fd8ca727b198495ef826002c1cbcc63e98eecb2e92abff48354ae668e6c3aaf9bd3005664967ae75637bacee7e730ce36142483d08ae6a068d9ae3e0e17d

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

Filesize
944B

MD5
4914eb0b2ff51bfa48484b5cc8454218

SHA1
6a7c3e36ce53b42497884d4c4a3bda438dd4374b

SHA256
7e510fc9344ef239ab1ab650dc95bb25fd44e2efba8b8246a3ac17880ee8b69e

SHA512
83ab35f622f4a5040ca5cb615a30f83bb0741449225f1fd1815b6923e225c28241d0c02d34f83f743349a5e57f84ca1c6f44016797a93d5985be41d11be79500

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3xwfw3ki.ley.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
39KB

MD5
b4d443314462b4df0dc8b7c33085b0a2

SHA1
7aa1bd73ba5ca27d97f0c714fdd86cfdd887304b

SHA256
087f62458517a3fac322b3c8feb38959377bc1bbbee6174fbeb41b6c25a4499c

SHA512
3184a175f7219c1253ce2cfadda36e9d50b2845802419b60da84175cb41096c85bdbe265665558d76a723e7286a4b5f99aaacf2fef5200aa0bc925ea23f38733

Download Submit
memory/3116-11-0x00007FFA38A80000-0x00007FFA39542000-memory.dmp

Filesize
10.8MB

Download
memory/3116-17-0x00007FFA38A80000-0x00007FFA39542000-memory.dmp

Filesize
10.8MB

Download
memory/3116-18-0x00007FFA38A80000-0x00007FFA39542000-memory.dmp

Filesize
10.8MB

Download
memory/3116-14-0x00007FFA38A80000-0x00007FFA39542000-memory.dmp

Filesize
10.8MB

Download
memory/3116-13-0x00007FFA38A80000-0x00007FFA39542000-memory.dmp

Filesize
10.8MB

Download
memory/3116-12-0x00007FFA38A80000-0x00007FFA39542000-memory.dmp

Filesize
10.8MB

Download
memory/3116-10-0x000002524DCB0000-0x000002524DCD2000-memory.dmp

Filesize
136KB

Download
memory/4436-0-0x00007FFA38A83000-0x00007FFA38A85000-memory.dmp

Filesize
8KB

Download
memory/4436-54-0x00007FFA38A80000-0x00007FFA39542000-memory.dmp

Filesize
10.8MB

Download
memory/4436-55-0x00007FFA38A83000-0x00007FFA38A85000-memory.dmp

Filesize
8KB

Download
memory/4436-56-0x00007FFA38A80000-0x00007FFA39542000-memory.dmp

Filesize
10.8MB

Download
memory/4436-1-0x00000000004F0000-0x0000000000500000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads