xworm | 69271c328db46c14628d161ff9fed12b14567dfaae2e139ec6cbc047ebca497d

General

Target

XWorm V5.6/XwormV5.6.exe
Size

15.0MB
MD5

2ff4c5a7eff1d9f19e23156dceeca4d0
SHA1

d8c175bb2b968713d48b37e1d018c8736a34ea6d
SHA256

198f82a2b491cb5c769d25c03ea7908161e20a9b51b585099f7088cef5c4323e
SHA512

2c839576c2a9ce47b4d37325417a4055e4f8674323b6b1a558fac35628eaf32e354271936ceb8dc6a38ccc24b170cc17c08e74a994e8363831b410810d676a05
SSDEEP

3072:LJKhDbtkb2D7wyOQnxZd+xYoPdLa5a47Qnx5RUUOMlv1s8W:LJKhDSbFGExYoPJatsjtlv1s8

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

193.161.193.99:63603

37.4.250.173:63603

Attributes

Install_directory
%AppData%
install_file
XwormV6.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4940-1-0x0000000000BB0000-0x0000000000BD4000-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
3548	powershell.exe
852	powershell.exe
1812	powershell.exe
4584	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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	XwormV5.6.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XwormV6.lnk	XwormV5.6.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XwormV6.lnk	XwormV5.6.exe

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
3548	powershell.exe
3548	powershell.exe
852	powershell.exe
852	powershell.exe
1812	powershell.exe
1812	powershell.exe
4584	powershell.exe
4584	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4940	XwormV5.6.exe
Token: SeDebugPrivilege	3548	powershell.exe
Token: SeDebugPrivilege	852	powershell.exe
Token: SeDebugPrivilege	1812	powershell.exe
Token: SeDebugPrivilege	4584	powershell.exe
Token: SeDebugPrivilege	4940	XwormV5.6.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4940 wrote to memory of 3548	4940	XwormV5.6.exe	89
PID 4940 wrote to memory of 3548	4940	XwormV5.6.exe	89
PID 4940 wrote to memory of 852	4940	XwormV5.6.exe	93
PID 4940 wrote to memory of 852	4940	XwormV5.6.exe	93
PID 4940 wrote to memory of 1812	4940	XwormV5.6.exe	95
PID 4940 wrote to memory of 1812	4940	XwormV5.6.exe	95
PID 4940 wrote to memory of 4584	4940	XwormV5.6.exe	97
PID 4940 wrote to memory of 4584	4940	XwormV5.6.exe	97

C:\Users\Admin\AppData\Local\Temp\XWorm V5.6\XwormV5.6.exe
"C:\Users\Admin\AppData\Local\Temp\XWorm V5.6\XwormV5.6.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4940
- 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\XWorm V5.6\XwormV5.6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3548
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XwormV5.6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:852
- 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\XwormV6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1812
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XwormV6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4584

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

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
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
e5663972c1caaba7088048911c758bf3

SHA1
3462dea0f9c2c16a9c3afdaef8bbb1f753c1c198

SHA256
9f7f29a4696876cadca3f14d7e43f9ede0c97fd64be3f5d94bda49a91b6a419e

SHA512
ff4e72c46cf083de62baa2ce2661555dd91b5f144294015f7b262fd4500cb67fe80e1871a82da63b607e3e9cef401f4b73c587bf1134637881ecad51aad1eddc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1yfiqzkz.psh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3548-13-0x00007FF819AB0000-0x00007FF81A571000-memory.dmp

Filesize
10.8MB

Download
memory/3548-14-0x00007FF819AB0000-0x00007FF81A571000-memory.dmp

Filesize
10.8MB

Download
memory/3548-17-0x00007FF819AB0000-0x00007FF81A571000-memory.dmp

Filesize
10.8MB

Download
memory/3548-12-0x00007FF819AB0000-0x00007FF81A571000-memory.dmp

Filesize
10.8MB

Download
memory/3548-2-0x0000028935E10000-0x0000028935E32000-memory.dmp

Filesize
136KB

Download
memory/4940-0-0x00007FF819AB3000-0x00007FF819AB5000-memory.dmp

Filesize
8KB

Download
memory/4940-1-0x0000000000BB0000-0x0000000000BD4000-memory.dmp

Filesize
144KB

Download
memory/4940-56-0x00007FF819AB0000-0x00007FF81A571000-memory.dmp

Filesize
10.8MB

Download
memory/4940-57-0x00007FF819AB0000-0x00007FF81A571000-memory.dmp

Filesize
10.8MB

Download

Analysis

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