xworm | b6a0c0000264b84cffcf9fd20e7a6321a6ca97be8babf2092805fbb5ae577809

General

Target

injector.exe
Size

49KB
MD5

37fbd83271e9f0a2dbe4372ec015c23f
SHA1

7deaca82f648bc67b5cc86e20696fff3a6a957a9
SHA256

b6a0c0000264b84cffcf9fd20e7a6321a6ca97be8babf2092805fbb5ae577809
SHA512

a3eff87bf8f4d8265706aa366060b661628a8621441762078356e029ea23f6369bf3d807e33b4ca8ff0adb84f8ab17cd46fd7a5387237c2be81ba57d83c7d300
SSDEEP

768:ZWO7VMyjFxpyKlSFyx9DKx6YOjhNOKEkzbwonH8wSpO1bNX:ggVMy/sBFU9DU6YOjq1EwoH865F

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

https://pastebin.com/raw/r8P3Ngmc:324

Mutex

LrtSM6IVyhGy1fuw

Attributes

Install_directory
%AppData%
install_file
injector.exe
pastebin_url
https://pastebin.com/raw/r8P3Ngmc

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral5/memory/4612-1-0x0000000000EF0000-0x0000000000F02000-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
5116	powershell.exe
1648	powershell.exe
3680	powershell.exe
4376	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\injector.lnk	injector.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\injector.lnk	injector.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-1-5-21-1672260578-815027929-964132517-1000\Software\Microsoft\Windows\CurrentVersion\Run\injector = "C:\\Users\\Admin\\AppData\\Roaming\\injector.exe"	injector.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 10 IoCs

Web Service

T1102

flow	ioc
1	pastebin.com
5	pastebin.com
9	pastebin.com
13	pastebin.com
15	pastebin.com
17	pastebin.com
11	pastebin.com
12	pastebin.com
14	pastebin.com
16	pastebin.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1648	powershell.exe
1648	powershell.exe
3680	powershell.exe
3680	powershell.exe
4376	powershell.exe
4376	powershell.exe
5116	powershell.exe
5116	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4612	injector.exe
Token: SeDebugPrivilege	1648	powershell.exe
Token: SeDebugPrivilege	3680	powershell.exe
Token: SeDebugPrivilege	4376	powershell.exe
Token: SeDebugPrivilege	5116	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4612 wrote to memory of 1648	4612	injector.exe	78
PID 4612 wrote to memory of 1648	4612	injector.exe	78
PID 4612 wrote to memory of 3680	4612	injector.exe	80
PID 4612 wrote to memory of 3680	4612	injector.exe	80
PID 4612 wrote to memory of 4376	4612	injector.exe	82
PID 4612 wrote to memory of 4376	4612	injector.exe	82
PID 4612 wrote to memory of 5116	4612	injector.exe	84
PID 4612 wrote to memory of 5116	4612	injector.exe	84

C:\Users\Admin\AppData\Local\Temp\injector.exe
"C:\Users\Admin\AppData\Local\Temp\injector.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4612
- 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\injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1648
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3680
- 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\injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4376
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5116

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
944B

MD5
67804b9d58ce1e789921f7a8dc9935f5

SHA1
40c8d6eefa67049490bfbeb21590c96d1bbaef50

SHA256
1e760cb49c4b6a4613311c3579c5ba92d71aa903773e5e8f8f8cbb066497169c

SHA512
cd4b8816bba26d603d84c86c61cee76ba4f090dae4855ffb042e7d3c07edaf85a548495b9db4229f532e8795be379fc94f730349f93c1a68f2a7d03cd20594bc

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

Filesize
944B

MD5
781da0576417bf414dc558e5a315e2be

SHA1
215451c1e370be595f1c389f587efeaa93108b4c

SHA256
41a5aef8b0bbeea2766f40a7bba2c78322379f167c610f7055ccb69e7db030fe

SHA512
24e283aa30a2903ebe154dad49b26067a45e46fec57549ad080d3b9ec3f272044efaaed3822d067837f5521262192f466c47195ffe7f75f8c7c5dcf3159ea737

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gggourr0.p5b.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1648-11-0x00007FFCE84B0000-0x00007FFCE8F72000-memory.dmp

Filesize
10.8MB

Download
memory/1648-13-0x00007FFCE84B0000-0x00007FFCE8F72000-memory.dmp

Filesize
10.8MB

Download
memory/1648-14-0x00007FFCE84B0000-0x00007FFCE8F72000-memory.dmp

Filesize
10.8MB

Download
memory/1648-15-0x00007FFCE84B0000-0x00007FFCE8F72000-memory.dmp

Filesize
10.8MB

Download
memory/1648-18-0x00007FFCE84B0000-0x00007FFCE8F72000-memory.dmp

Filesize
10.8MB

Download
memory/1648-12-0x00007FFCE84B0000-0x00007FFCE8F72000-memory.dmp

Filesize
10.8MB

Download
memory/1648-10-0x000002183AC80000-0x000002183ACA2000-memory.dmp

Filesize
136KB

Download
memory/4612-0-0x00007FFCE84B3000-0x00007FFCE84B5000-memory.dmp

Filesize
8KB

Download
memory/4612-1-0x0000000000EF0000-0x0000000000F02000-memory.dmp

Filesize
72KB

Download
memory/4612-54-0x00007FFCE84B0000-0x00007FFCE8F72000-memory.dmp

Filesize
10.8MB

Download
memory/4612-55-0x00007FFCE84B3000-0x00007FFCE84B5000-memory.dmp

Filesize
8KB

Download
memory/4612-56-0x00007FFCE84B0000-0x00007FFCE8F72000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads