xworm | b6a0c0000264b84cffcf9fd20e7a6321a6ca97be8babf2092805fbb5ae577809

Analysis

max time kernel
134s
max time network
150s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
05-07-2024 13:46

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General

Target

injector.exe
Size

49KB
MD5

37fbd83271e9f0a2dbe4372ec015c23f
SHA1

7deaca82f648bc67b5cc86e20696fff3a6a957a9
SHA256

b6a0c0000264b84cffcf9fd20e7a6321a6ca97be8babf2092805fbb5ae577809
SHA512

a3eff87bf8f4d8265706aa366060b661628a8621441762078356e029ea23f6369bf3d807e33b4ca8ff0adb84f8ab17cd46fd7a5387237c2be81ba57d83c7d300
SSDEEP

768:ZWO7VMyjFxpyKlSFyx9DKx6YOjhNOKEkzbwonH8wSpO1bNX:ggVMy/sBFU9DU6YOjq1EwoH865F

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

https://pastebin.com/raw/r8P3Ngmc:324

Mutex

LrtSM6IVyhGy1fuw

Attributes

Install_directory
%AppData%
install_file
injector.exe
pastebin_url
https://pastebin.com/raw/r8P3Ngmc

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral3/memory/2196-0-0x00000000003E0000-0x00000000003F2000-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
1352	powershell.exe
2376	powershell.exe
404	powershell.exe
4044	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\injector.lnk	injector.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\injector.lnk	injector.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-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Windows\CurrentVersion\Run\injector = "C:\\Users\\Admin\\AppData\\Roaming\\injector.exe"	injector.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
1	pastebin.com
2	pastebin.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
1352	powershell.exe
1352	powershell.exe
1352	powershell.exe
2376	powershell.exe
2376	powershell.exe
2376	powershell.exe
404	powershell.exe
404	powershell.exe
404	powershell.exe
4044	powershell.exe
4044	powershell.exe
4044	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2196	injector.exe
Token: SeDebugPrivilege	1352	powershell.exe
Token: SeIncreaseQuotaPrivilege	1352	powershell.exe
Token: SeSecurityPrivilege	1352	powershell.exe
Token: SeTakeOwnershipPrivilege	1352	powershell.exe
Token: SeLoadDriverPrivilege	1352	powershell.exe
Token: SeSystemProfilePrivilege	1352	powershell.exe
Token: SeSystemtimePrivilege	1352	powershell.exe
Token: SeProfSingleProcessPrivilege	1352	powershell.exe
Token: SeIncBasePriorityPrivilege	1352	powershell.exe
Token: SeCreatePagefilePrivilege	1352	powershell.exe
Token: SeBackupPrivilege	1352	powershell.exe
Token: SeRestorePrivilege	1352	powershell.exe
Token: SeShutdownPrivilege	1352	powershell.exe
Token: SeDebugPrivilege	1352	powershell.exe
Token: SeSystemEnvironmentPrivilege	1352	powershell.exe
Token: SeRemoteShutdownPrivilege	1352	powershell.exe
Token: SeUndockPrivilege	1352	powershell.exe
Token: SeManageVolumePrivilege	1352	powershell.exe
Token: 33	1352	powershell.exe
Token: 34	1352	powershell.exe
Token: 35	1352	powershell.exe
Token: 36	1352	powershell.exe
Token: SeDebugPrivilege	2376	powershell.exe
Token: SeIncreaseQuotaPrivilege	2376	powershell.exe
Token: SeSecurityPrivilege	2376	powershell.exe
Token: SeTakeOwnershipPrivilege	2376	powershell.exe
Token: SeLoadDriverPrivilege	2376	powershell.exe
Token: SeSystemProfilePrivilege	2376	powershell.exe
Token: SeSystemtimePrivilege	2376	powershell.exe
Token: SeProfSingleProcessPrivilege	2376	powershell.exe
Token: SeIncBasePriorityPrivilege	2376	powershell.exe
Token: SeCreatePagefilePrivilege	2376	powershell.exe
Token: SeBackupPrivilege	2376	powershell.exe
Token: SeRestorePrivilege	2376	powershell.exe
Token: SeShutdownPrivilege	2376	powershell.exe
Token: SeDebugPrivilege	2376	powershell.exe
Token: SeSystemEnvironmentPrivilege	2376	powershell.exe
Token: SeRemoteShutdownPrivilege	2376	powershell.exe
Token: SeUndockPrivilege	2376	powershell.exe
Token: SeManageVolumePrivilege	2376	powershell.exe
Token: 33	2376	powershell.exe
Token: 34	2376	powershell.exe
Token: 35	2376	powershell.exe
Token: 36	2376	powershell.exe
Token: SeDebugPrivilege	404	powershell.exe
Token: SeIncreaseQuotaPrivilege	404	powershell.exe
Token: SeSecurityPrivilege	404	powershell.exe
Token: SeTakeOwnershipPrivilege	404	powershell.exe
Token: SeLoadDriverPrivilege	404	powershell.exe
Token: SeSystemProfilePrivilege	404	powershell.exe
Token: SeSystemtimePrivilege	404	powershell.exe
Token: SeProfSingleProcessPrivilege	404	powershell.exe
Token: SeIncBasePriorityPrivilege	404	powershell.exe
Token: SeCreatePagefilePrivilege	404	powershell.exe
Token: SeBackupPrivilege	404	powershell.exe
Token: SeRestorePrivilege	404	powershell.exe
Token: SeShutdownPrivilege	404	powershell.exe
Token: SeDebugPrivilege	404	powershell.exe
Token: SeSystemEnvironmentPrivilege	404	powershell.exe
Token: SeRemoteShutdownPrivilege	404	powershell.exe
Token: SeUndockPrivilege	404	powershell.exe
Token: SeManageVolumePrivilege	404	powershell.exe
Token: 33	404	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 1352	2196	injector.exe	74
PID 2196 wrote to memory of 1352	2196	injector.exe	74
PID 2196 wrote to memory of 2376	2196	injector.exe	77
PID 2196 wrote to memory of 2376	2196	injector.exe	77
PID 2196 wrote to memory of 404	2196	injector.exe	79
PID 2196 wrote to memory of 404	2196	injector.exe	79
PID 2196 wrote to memory of 4044	2196	injector.exe	81
PID 2196 wrote to memory of 4044	2196	injector.exe	81

C:\Users\Admin\AppData\Local\Temp\injector.exe
"C:\Users\Admin\AppData\Local\Temp\injector.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2196
- 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\injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1352
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2376
- 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\injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:404
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'injector.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4044

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
ad5cd538ca58cb28ede39c108acb5785

SHA1
1ae910026f3dbe90ed025e9e96ead2b5399be877

SHA256
c9e6cb04d6c893458d5a7e12eb575cf97c3172f5e312b1f63a667cbbc5f0c033

SHA512
c066c5d9b276a68fa636647bb29aea05bfa2292217bc77f5324d9c1d93117772ee8277e1f7cff91ec8d6b7c05ca078f929cecfdbb09582522a9067f54740af13

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

Filesize
1KB

MD5
d260bcce87a6b29c5d451dac4f4b7dae

SHA1
7a72d9d4e3b2ab06f194c45ca21c81191f3c2a94

SHA256
ff787e9de72fdee792c7273b1c61451f82070f88a18a56075d4c8cf67d6fcbdb

SHA512
c647ed7a7518b093c6548dfef71af532713cc84e43c49f66c533d8383ee851bcbdb9cab071733497cbd55157d81f41dafbbfd16f64c91a67edb54e499a83cee0

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

Filesize
1KB

MD5
867e4476049eefa50578d8f2d9502131

SHA1
e67cbd09345b7b3442727e2933badec9b204139a

SHA256
fcfe343f8563a3597983d6ef3277ee5470ba5e39d1bf89533d99b418c94d7969

SHA512
f4103bfac187b132ac1c34e771156e4105b27a70ea76f0210c9bbc29466a2406050fe4039493247bd89ceb6b63fde3077512ed8704de9ec373ada57d7db02595

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

Filesize
1KB

MD5
76e9560c96eff3e71c1ca15d17e3e92b

SHA1
1a9493cd68a17144c7a0c48b78a0baa545b822bb

SHA256
8ec811607a929a5fc97b65c512d29401ce80db54103a243d863917f74bd6e7b1

SHA512
59de979b46c25f591e1465257267168af9e86a25548621f2bc8df111a3e79ec3450adfbdea71e7f9697cd428225923930551113581e3b2b44d393db66caa3505

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ucmn00vx.05a.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
memory/1352-10-0x00007FFB65DB0000-0x00007FFB6679C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-11-0x00000213F2C50000-0x00000213F2CC6000-memory.dmp

Filesize
472KB

Download
memory/1352-12-0x00007FFB65DB0000-0x00007FFB6679C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-41-0x00007FFB65DB0000-0x00007FFB6679C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-48-0x00007FFB65DB0000-0x00007FFB6679C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-52-0x00007FFB65DB0000-0x00007FFB6679C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-9-0x00007FFB65DB0000-0x00007FFB6679C000-memory.dmp

Filesize
9.9MB

Download
memory/1352-6-0x00000213F2950000-0x00000213F2972000-memory.dmp

Filesize
136KB

Download
memory/2196-0-0x00000000003E0000-0x00000000003F2000-memory.dmp

Filesize
72KB

Download
memory/2196-1-0x00007FFB65DB3000-0x00007FFB65DB4000-memory.dmp

Filesize
4KB

Download
memory/2196-187-0x00007FFB65DB0000-0x00007FFB6679C000-memory.dmp

Filesize
9.9MB

Download
memory/2196-188-0x00007FFB65DB0000-0x00007FFB6679C000-memory.dmp

Filesize
9.9MB

Download