xworm | e55752ce0e4bdc9426430bf580efd1559864d24c3c0f118d58ff513e6d618fd1

Analysis

max time kernel
124s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
07/07/2024, 03:20

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General

Target

bin/debug/debug.main.exe
Size

64KB
MD5

36969de6b4bf8de24684de1bb71f624f
SHA1

0327d7d9d7f739e4b09bab680249ed997a281c9b
SHA256

57035572212814c4666994f1a0d2b6955b0951a8f1e9e1686dead895de5f64cf
SHA512

cd8eae1b19c8ae9a2d22b999e85e86625a1e74630e6f3155ff63965b8f116e62f79dcc23b88c92f51fa42ee26f7bd87cad22a21f32f16306890576e309dfe548
SSDEEP

1536:TTodvW06WoBsscJSbigiYUVkaNW6PmqCO26erLq:UenWissBbigHmkaRmHO26erLq

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

79.110.49.233:4444

Attributes

Install_directory
%AppData%
install_file
VSREDIST.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral6/memory/1692-1-0x0000000000930000-0x0000000000946000-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
620	powershell.exe
3880	powershell.exe
5088	powershell.exe
1600	powershell.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-661257284-3186977026-4220467887-1000\Control Panel\International\Geo\Nation	debug.main.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VSREDIST.lnk	debug.main.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VSREDIST.lnk	debug.main.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-1-5-21-661257284-3186977026-4220467887-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VSREDIST = "C:\\Users\\Admin\\AppData\\Roaming\\VSREDIST.exe"	debug.main.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
16	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
5088	powershell.exe
5088	powershell.exe
5088	powershell.exe
1600	powershell.exe
1600	powershell.exe
1600	powershell.exe
620	powershell.exe
620	powershell.exe
620	powershell.exe
3880	powershell.exe
3880	powershell.exe
3880	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1692	debug.main.exe
Token: SeDebugPrivilege	5088	powershell.exe
Token: SeDebugPrivilege	1600	powershell.exe
Token: SeDebugPrivilege	620	powershell.exe
Token: SeDebugPrivilege	3880	powershell.exe
Token: SeDebugPrivilege	1692	debug.main.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 5088	1692	debug.main.exe	93
PID 1692 wrote to memory of 5088	1692	debug.main.exe	93
PID 1692 wrote to memory of 1600	1692	debug.main.exe	95
PID 1692 wrote to memory of 1600	1692	debug.main.exe	95
PID 1692 wrote to memory of 620	1692	debug.main.exe	97
PID 1692 wrote to memory of 620	1692	debug.main.exe	97
PID 1692 wrote to memory of 3880	1692	debug.main.exe	99
PID 1692 wrote to memory of 3880	1692	debug.main.exe	99

C:\Users\Admin\AppData\Local\Temp\bin\debug\debug.main.exe
"C:\Users\Admin\AppData\Local\Temp\bin\debug\debug.main.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1692
- 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\bin\debug\debug.main.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5088
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'debug.main.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1600
- 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\VSREDIST.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:620
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'VSREDIST.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3880

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3896,i,5028538196072658126,13960315633709835247,262144 --variations-seed-version --mojo-platform-channel-handle=4388 /prefetch:8
1⤵
PID:2576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

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
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
a9293ef980c925abe33d940554ed8575

SHA1
9b6d85f2595f7fd4923f52b21ab7607279066969

SHA256
8313a191aa9d11cce868d95ac9a9b1609275bfe93131fcb6e547b985b0242fbe

SHA512
2003d90bb2bc89378ccaeb9c5edf76b2dfd93c80369d063e56141abb8d7fea6acee6a103874ab227bc1548437269c8e4ee5174bf482ecf3d66c38f3e0ba35d85

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

Filesize
944B

MD5
07a771c4f31f62b2d04e2befaa36dce7

SHA1
662952ede6c1acbb575e8149a5ac2f08edade811

SHA256
a2df2570980e1123d9af8e12a27a82d3a4d332f0e7dd44e4e225743207c099b3

SHA512
9e339a2d0bfaf5bbe5252f69061652c5880fe1233930830ca7190a65516366e05129907b1656a6790c0093ad82ac73ddee6738d0b78ecb1e3d888f467b889fe9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ykpgvrfh.lhf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1692-1-0x0000000000930000-0x0000000000946000-memory.dmp

Filesize
88KB

Download
memory/1692-2-0x00007FFD00F10000-0x00007FFD019D1000-memory.dmp

Filesize
10.8MB

Download
memory/1692-0-0x00007FFD00F13000-0x00007FFD00F15000-memory.dmp

Filesize
8KB

Download
memory/1692-57-0x00007FFD00F10000-0x00007FFD019D1000-memory.dmp

Filesize
10.8MB

Download
memory/5088-5-0x0000014E2E3D0000-0x0000014E2E3F2000-memory.dmp

Filesize
136KB

Download
memory/5088-18-0x00007FFD00F10000-0x00007FFD019D1000-memory.dmp

Filesize
10.8MB

Download
memory/5088-15-0x00007FFD00F10000-0x00007FFD019D1000-memory.dmp

Filesize
10.8MB

Download
memory/5088-14-0x00007FFD00F10000-0x00007FFD019D1000-memory.dmp

Filesize
10.8MB

Download
memory/5088-13-0x00007FFD00F10000-0x00007FFD019D1000-memory.dmp

Filesize
10.8MB

Download