xworm | fc7d4533df74ba71d5ffe89d29601a3f0fcc4ae3388e61fdb7e3b15f4a7c9715

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03/12/2024, 03:15

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General

Target

fc7d4533df74ba71d5ffe89d29601a3f0fcc4ae3388e61fdb7e3b15f4a7c9715.exe
Size

1.5MB
MD5

378b2b52314f041dfd56b7f5074fe315
SHA1

450d844565c9917e0ebde24c702b3d84d021fe6f
SHA256

fc7d4533df74ba71d5ffe89d29601a3f0fcc4ae3388e61fdb7e3b15f4a7c9715
SHA512

3e3998db5f018add5dbd999125be2e06d2b2760d556a917b1a89cf3afce592b618e636b9381447244e9834bfe3d469d734c07d2d727755c5b828899deed85506
SSDEEP

49152:54dI4az0DW2O/fdDA95vPu0L5tY9S8xLGtznIqtrjHr:WI4a4Sndu5HtY9HLGB/rjHr

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

36.50.233.24:60007

Mutex

NXFxonThLtVC9fUS

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral2/memory/4444-26-0x0000000002760000-0x0000000002860000-memory.dmp	family_xworm
behavioral2/memory/4444-27-0x0000000002630000-0x000000000263E000-memory.dmp	family_xworm
behavioral2/memory/4444-30-0x0000000002760000-0x0000000002860000-memory.dmp	family_xworm

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

Loads dropped DLL 3 IoCs

pid	Process
4444	regsvr32.exe
3252	regsvr32.EXE
1228	regsvr32.EXE

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to execute payload.

execution

PowerShell

T1059.001

pid	Process
1120	powershell.exe
1120	powershell.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1120	powershell.exe
1120	powershell.exe
4444	regsvr32.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1120	powershell.exe
Token: SeIncreaseQuotaPrivilege	1120	powershell.exe
Token: SeSecurityPrivilege	1120	powershell.exe
Token: SeTakeOwnershipPrivilege	1120	powershell.exe
Token: SeLoadDriverPrivilege	1120	powershell.exe
Token: SeSystemProfilePrivilege	1120	powershell.exe
Token: SeSystemtimePrivilege	1120	powershell.exe
Token: SeProfSingleProcessPrivilege	1120	powershell.exe
Token: SeIncBasePriorityPrivilege	1120	powershell.exe
Token: SeCreatePagefilePrivilege	1120	powershell.exe
Token: SeBackupPrivilege	1120	powershell.exe
Token: SeRestorePrivilege	1120	powershell.exe
Token: SeShutdownPrivilege	1120	powershell.exe
Token: SeDebugPrivilege	1120	powershell.exe
Token: SeSystemEnvironmentPrivilege	1120	powershell.exe
Token: SeRemoteShutdownPrivilege	1120	powershell.exe
Token: SeUndockPrivilege	1120	powershell.exe
Token: SeManageVolumePrivilege	1120	powershell.exe
Token: 33	1120	powershell.exe
Token: 34	1120	powershell.exe
Token: 35	1120	powershell.exe
Token: 36	1120	powershell.exe
Token: SeIncreaseQuotaPrivilege	1120	powershell.exe
Token: SeSecurityPrivilege	1120	powershell.exe
Token: SeTakeOwnershipPrivilege	1120	powershell.exe
Token: SeLoadDriverPrivilege	1120	powershell.exe
Token: SeSystemProfilePrivilege	1120	powershell.exe
Token: SeSystemtimePrivilege	1120	powershell.exe
Token: SeProfSingleProcessPrivilege	1120	powershell.exe
Token: SeIncBasePriorityPrivilege	1120	powershell.exe
Token: SeCreatePagefilePrivilege	1120	powershell.exe
Token: SeBackupPrivilege	1120	powershell.exe
Token: SeRestorePrivilege	1120	powershell.exe
Token: SeShutdownPrivilege	1120	powershell.exe
Token: SeDebugPrivilege	1120	powershell.exe
Token: SeSystemEnvironmentPrivilege	1120	powershell.exe
Token: SeRemoteShutdownPrivilege	1120	powershell.exe
Token: SeUndockPrivilege	1120	powershell.exe
Token: SeManageVolumePrivilege	1120	powershell.exe
Token: 33	1120	powershell.exe
Token: 34	1120	powershell.exe
Token: 35	1120	powershell.exe
Token: 36	1120	powershell.exe
Token: SeIncreaseQuotaPrivilege	1120	powershell.exe
Token: SeSecurityPrivilege	1120	powershell.exe
Token: SeTakeOwnershipPrivilege	1120	powershell.exe
Token: SeLoadDriverPrivilege	1120	powershell.exe
Token: SeSystemProfilePrivilege	1120	powershell.exe
Token: SeSystemtimePrivilege	1120	powershell.exe
Token: SeProfSingleProcessPrivilege	1120	powershell.exe
Token: SeIncBasePriorityPrivilege	1120	powershell.exe
Token: SeCreatePagefilePrivilege	1120	powershell.exe
Token: SeBackupPrivilege	1120	powershell.exe
Token: SeRestorePrivilege	1120	powershell.exe
Token: SeShutdownPrivilege	1120	powershell.exe
Token: SeDebugPrivilege	1120	powershell.exe
Token: SeSystemEnvironmentPrivilege	1120	powershell.exe
Token: SeRemoteShutdownPrivilege	1120	powershell.exe
Token: SeUndockPrivilege	1120	powershell.exe
Token: SeManageVolumePrivilege	1120	powershell.exe
Token: 33	1120	powershell.exe
Token: 34	1120	powershell.exe
Token: 35	1120	powershell.exe
Token: 36	1120	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3124 wrote to memory of 1120	3124	fc7d4533df74ba71d5ffe89d29601a3f0fcc4ae3388e61fdb7e3b15f4a7c9715.exe	82
PID 3124 wrote to memory of 1120	3124	fc7d4533df74ba71d5ffe89d29601a3f0fcc4ae3388e61fdb7e3b15f4a7c9715.exe	82
PID 3124 wrote to memory of 4444	3124	fc7d4533df74ba71d5ffe89d29601a3f0fcc4ae3388e61fdb7e3b15f4a7c9715.exe	85
PID 3124 wrote to memory of 4444	3124	fc7d4533df74ba71d5ffe89d29601a3f0fcc4ae3388e61fdb7e3b15f4a7c9715.exe	85

C:\Users\Admin\AppData\Local\Temp\fc7d4533df74ba71d5ffe89d29601a3f0fcc4ae3388e61fdb7e3b15f4a7c9715.exe
"C:\Users\Admin\AppData\Local\Temp\fc7d4533df74ba71d5ffe89d29601a3f0fcc4ae3388e61fdb7e3b15f4a7c9715.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3124
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" "Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute \"regsvr32\" -Argument \"/s /i:INSTALL C:\Users\Admin\AppData/Roaming/Wf9K.ini\") -Trigger (New-ScheduledTaskTrigger -Once -At (Get-Date).AddMinutes(1) -RepetitionInterval (New-TimeSpan -Minutes 1)) -TaskName 'MicrosoftEdgeUpdateTaskMachineUA{2d417318-8069-42b4-bab2-ce7e5ddf61a7}' -Description 'Default' -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries)"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1120
- C:\Windows\system32\regsvr32.exe
  "regsvr32" /s /i:INSTALL C:\Users\Admin\AppData/Roaming/Wf9K.ini
  2⤵
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  PID:4444

C:\Windows\system32\regsvr32.EXE
C:\Windows\system32\regsvr32.EXE /s /i:INSTALL C:\Users\Admin\AppData/Roaming/Wf9K.ini
1⤵
- Loads dropped DLL
PID:3252

C:\Windows\system32\regsvr32.EXE
C:\Windows\system32\regsvr32.EXE /s /i:INSTALL C:\Users\Admin\AppData/Roaming/Wf9K.ini
1⤵
- Loads dropped DLL
PID:1228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_v4x0l02v.xs5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Wf9K.ini

Filesize
601KB

MD5
360e0cbf19c10f3f28c336ceb1373efe

SHA1
f64ef6d518e81a1e4b6484d8785ba80de9480083

SHA256
5fb2ad716b5822a7e869c66677c31d7350ad0ec845f28f3a216823635a38a120

SHA512
64d2f67337243b5e1bc0533ff88211f3f1064d5bae815f9259a53340beff215b8410e08a51c204d333e60405817facec75cf8059784db548ebccc8177b8d69d4

Download Submit
memory/1120-20-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

Filesize
10.8MB

Download
memory/1120-2-0x00007FF81A2E3000-0x00007FF81A2E5000-memory.dmp

Filesize
8KB

Download
memory/1120-13-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

Filesize
10.8MB

Download
memory/1120-14-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

Filesize
10.8MB

Download
memory/1120-15-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

Filesize
10.8MB

Download
memory/1120-16-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

Filesize
10.8MB

Download
memory/1120-3-0x0000025052B60000-0x0000025052B82000-memory.dmp

Filesize
136KB

Download
memory/3124-0-0x000002C2E5500000-0x000002C2E5501000-memory.dmp

Filesize
4KB

Download
memory/3124-28-0x00007FF64C650000-0x00007FF64C78A000-memory.dmp

Filesize
1.2MB

Download
memory/4444-26-0x0000000002760000-0x0000000002860000-memory.dmp

Filesize
1024KB

Download
memory/4444-27-0x0000000002630000-0x000000000263E000-memory.dmp

Filesize
56KB

Download
memory/4444-29-0x00007FF829FF0000-0x00007FF82A075000-memory.dmp

Filesize
532KB

Download
memory/4444-30-0x0000000002760000-0x0000000002860000-memory.dmp

Filesize
1024KB

Download