xworm | 3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377

General

Target

3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe
Size

62KB
MD5

d361dc014b73a322681f2fb1e83f9091
SHA1

6411e30e47b02a5ead2d3b8c98105734e2dc8915
SHA256

3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377
SHA512

8ab35a0008bd184296688fac0db593069d4d37da72777b0130ed9d1a46e9eed728e4d74206941c9eb333bd21b91a4158514e888dba0dbe99af0bbbc181fc7591
SSDEEP

1536:96gXIHbI7Ef01kbhEFCJ8nm68shlOTQyAzTUk:v1kbh98n0s7OTIok

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

147.185.221.24:17857

Attributes

Install_directory
%LocalAppData%

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4004-1-0x00000000006C0000-0x00000000006D6000-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
1040	powershell.exe
2152	powershell.exe
1800	powershell.exe
4464	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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Discord.lnk	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Discord.lnk	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.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
2152	powershell.exe
2152	powershell.exe
1800	powershell.exe
1800	powershell.exe
4464	powershell.exe
4464	powershell.exe
1040	powershell.exe
1040	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4004	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe
Token: SeDebugPrivilege	2152	powershell.exe
Token: SeDebugPrivilege	1800	powershell.exe
Token: SeDebugPrivilege	4464	powershell.exe
Token: SeDebugPrivilege	1040	powershell.exe
Token: SeDebugPrivilege	4004	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4004 wrote to memory of 2152	4004	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe	84
PID 4004 wrote to memory of 2152	4004	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe	84
PID 4004 wrote to memory of 1800	4004	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe	86
PID 4004 wrote to memory of 1800	4004	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe	86
PID 4004 wrote to memory of 4464	4004	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe	88
PID 4004 wrote to memory of 4464	4004	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe	88
PID 4004 wrote to memory of 1040	4004	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe	90
PID 4004 wrote to memory of 1040	4004	3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe	90

C:\Users\Admin\AppData\Local\Temp\3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe
"C:\Users\Admin\AppData\Local\Temp\3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4004
- 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\3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2152
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '3b67604b47e117c1eff51c5e7c26c8258441c8b27809495cc7d0bb407fdbc377.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1800
- 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\Discord'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4464
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Discord'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1040

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

Replay Monitor

Loading Replay Monitor...

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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
e91a049452029afa6defd4fa34646957

SHA1
d1ba5c6d30e79706a2f0e66caf405dd49d5d887a

SHA256
1a747cb87d49175fb29efbc8162ff99235769897873db2242a8194af72b77a95

SHA512
01901cb6e9a385e54a0759a54a6dffd98e152d5052cf371bc514c73b52c3a075edf2af1851a24ee1bb8a637c441895946df7aca4ac11cb36ca1237a69f972c66

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

Filesize
944B

MD5
34f595487e6bfd1d11c7de88ee50356a

SHA1
4caad088c15766cc0fa1f42009260e9a02f953bb

SHA256
0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

SHA512
10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qyjje5cs.hkj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2152-13-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/2152-14-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/2152-17-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/2152-12-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/2152-7-0x0000025230B00000-0x0000025230B22000-memory.dmp

Filesize
136KB

Download
memory/4004-0-0x00007FF97C103000-0x00007FF97C105000-memory.dmp

Filesize
8KB

Download
memory/4004-1-0x00000000006C0000-0x00000000006D6000-memory.dmp

Filesize
88KB

Download
memory/4004-55-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download
memory/4004-56-0x00007FF97C103000-0x00007FF97C105000-memory.dmp

Filesize
8KB

Download
memory/4004-57-0x00007FF97C100000-0x00007FF97CBC1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing