xworm | f14d1d27a20ad79684026a18395389354d6dc0e529d2d795bf80e3b66f76913b

General

Target

tergdfgdfg.exe
Size

80KB
MD5

9410280381c7972ba775e13d094a87e0
SHA1

3389d7bf5fdc0c613bb130da42d76968b221392d
SHA256

f14d1d27a20ad79684026a18395389354d6dc0e529d2d795bf80e3b66f76913b
SHA512

2c829e655ac71245f8258015556910b6f9eb2988c9e1bb1ecafedee7406b13a10f586f5d3cdecdc374fd8763d538eb2cf84db3a98aec6076629d87bcf998e5b9
SSDEEP

1536:ccrBb0z39BE4SNMZlvaE67897ymsDKM88wEaCnbeHsy/yim/1y1ejY6yFOBa:zrBbcnCMZlvaZM2msWxEleJ/yjgf6yFD

Score

10^/10

Malware Config

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/3408-4-0x0000000008B60000-0x0000000008B72000-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
4008	powershell.exe
1796	powershell.exe
1456	powershell.exe
3104	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SubDir.lnk	Explorer.EXE
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SubDir.lnk	Explorer.EXE

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MyApplication = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tergdfgdfg.exe"	tergdfgdfg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1479699283-3000499823-2337359760-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SubDir = "C:\\Users\\Admin\\AppData\\Roaming\\SubDir.exe"	Explorer.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
3220	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
3576	tergdfgdfg.exe
3576	tergdfgdfg.exe
1456	powershell.exe
1456	powershell.exe
3104	powershell.exe
3104	powershell.exe
3104	powershell.exe
4008	powershell.exe
4008	powershell.exe
4008	powershell.exe
1796	powershell.exe
1796	powershell.exe
1796	powershell.exe
3408	Explorer.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3408	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeDebugPrivilege	3408	Explorer.EXE
Token: SeDebugPrivilege	1456	powershell.exe
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeDebugPrivilege	3104	powershell.exe
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeDebugPrivilege	4008	powershell.exe
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeDebugPrivilege	1796	powershell.exe
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeShutdownPrivilege	3408	Explorer.EXE
Token: SeCreatePagefilePrivilege	3408	Explorer.EXE
Token: SeDebugPrivilege	3408	Explorer.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3408	Explorer.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3576 wrote to memory of 3408	3576	tergdfgdfg.exe	56
PID 3408 wrote to memory of 1456	3408	Explorer.EXE	91
PID 3408 wrote to memory of 1456	3408	Explorer.EXE	91
PID 3408 wrote to memory of 3104	3408	Explorer.EXE	97
PID 3408 wrote to memory of 3104	3408	Explorer.EXE	97
PID 3408 wrote to memory of 4008	3408	Explorer.EXE	99
PID 3408 wrote to memory of 4008	3408	Explorer.EXE	99
PID 3408 wrote to memory of 1796	3408	Explorer.EXE	101
PID 3408 wrote to memory of 1796	3408	Explorer.EXE	101
PID 3408 wrote to memory of 3220	3408	Explorer.EXE	104
PID 3408 wrote to memory of 3220	3408	Explorer.EXE	104

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:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3408
- C:\Users\Admin\AppData\Local\Temp\tergdfgdfg.exe
  "C:\Users\Admin\AppData\Local\Temp\tergdfgdfg.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3576
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Explorer.EXE'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1456
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Explorer.EXE'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3104
- 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\SubDir.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4008
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SubDir.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1796
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "SubDir" /tr "C:\Users\Admin\AppData\Roaming\SubDir.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3220

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

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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
83685d101174171875b4a603a6c2a35c

SHA1
37be24f7c4525e17fa18dbd004186be3a9209017

SHA256
0c557845aab1da497bbff0e8fbe65cabf4cb2804b97ba8ae8c695a528af70870

SHA512
005a97a8e07b1840abdcef86a7881fd9bdc8acbfdf3eafe1dceb6374060626d81d789e57d87ca4096a39e28d5cca00f8945edff0a747591691ae75873d2b3fb5

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tbnqe11o.wtg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1456-16-0x00000242EF180000-0x00000242EF1A2000-memory.dmp

Filesize
136KB

Download
memory/1456-18-0x00007FF80A640000-0x00007FF80B101000-memory.dmp

Filesize
10.8MB

Download
memory/1456-11-0x00007FF80A640000-0x00007FF80B101000-memory.dmp

Filesize
10.8MB

Download
memory/1456-21-0x00007FF80A640000-0x00007FF80B101000-memory.dmp

Filesize
10.8MB

Download
memory/1456-17-0x00007FF80A640000-0x00007FF80B101000-memory.dmp

Filesize
10.8MB

Download
memory/3408-4-0x0000000008B60000-0x0000000008B72000-memory.dmp

Filesize
72KB

Download
memory/3408-5-0x00007FF80A640000-0x00007FF80B101000-memory.dmp

Filesize
10.8MB

Download
memory/3408-3-0x00007FF80A643000-0x00007FF80A645000-memory.dmp

Filesize
8KB

Download
memory/3408-2-0x0000000003050000-0x0000000003063000-memory.dmp

Filesize
76KB

Download
memory/3408-61-0x00007FF80A640000-0x00007FF80B101000-memory.dmp

Filesize
10.8MB

Download
memory/3408-62-0x00007FF80A640000-0x00007FF80B101000-memory.dmp

Filesize
10.8MB

Download
memory/3576-0-0x00007FF80A643000-0x00007FF80A645000-memory.dmp

Filesize
8KB

Download
memory/3576-45-0x00007FF80A643000-0x00007FF80A645000-memory.dmp

Filesize
8KB

Download
memory/3576-1-0x0000000000BC0000-0x0000000000BDA000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads