xworm | 7bd2fa279b432eb8afc962e951ae03d9036adc8f381d315c8a846f4c5877c215

Resubmissions

24-06-2024 01:57

240624-cdqgsavape 10

24-06-2024 01:52

240624-cag18sxfpn 10

Analysis

max time kernel
42s
max time network
53s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-06-2024 01:57

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General

Target

BRATS V4.2‌‌.exe
Size

9.7MB
MD5

d7c805799b6b0b1a16223e4953d7d3d6
SHA1

84b9208b01fbbbec5995328945ffee4205a31fcf
SHA256

7bd2fa279b432eb8afc962e951ae03d9036adc8f381d315c8a846f4c5877c215
SHA512

0b0e054f337064d8d0c7b2ccb03bba8f2e3e6c4ab809261747082e380cc309980c6e4e8b19095e5ef1885beb5bcf17a556c08b7ee9ec9691a05fddd1cd5c9951
SSDEEP

196608:fxma6TVvueQBN7l6zrGgRYcZNWnmr2+EzXWLLYPm5ww87XUbmOVsXz/G:jzf78ZacZNW82+spwvsNXy

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

dsasinject-58214.portmap.io:3389

Attributes

Install_directory
%AppData%
install_file
svchost.exe
telegram
https://api.telegram.org/bot7023899363:AAFEzgbfWzhyE32Lf95TKSRYEYXMd4AfMyk/sendMessage?chat_id=6354844663

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000233f5-16.dat	family_xworm
behavioral1/memory/2432-34-0x0000000000B50000-0x0000000000B6A000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 8 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
952	powershell.exe
864	powershell.exe
860	powershell.exe
2760	powershell.exe
3812	powershell.exe
556	powershell.exe
1264	powershell.exe
4848	powershell.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	BRATS V4.2‌‌.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	svchost.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	csrss.exe

Drops startup file 4 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
4180	BRATS V4.2.exe
2432	svchost.exe
3188	csrss.exe

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

System Information Discovery
T1082

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3188	csrss.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

pid	Process
4180	BRATS V4.2.exe
4180	BRATS V4.2.exe
2760	powershell.exe
2760	powershell.exe
3812	powershell.exe
3812	powershell.exe
556	powershell.exe
556	powershell.exe
1264	powershell.exe
1264	powershell.exe
4848	powershell.exe
4848	powershell.exe
952	powershell.exe
952	powershell.exe
864	powershell.exe
864	powershell.exe
860	powershell.exe
860	powershell.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe
2432	svchost.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	2432	svchost.exe
Token: SeDebugPrivilege	3188	csrss.exe
Token: SeDebugPrivilege	2760	powershell.exe
Token: SeDebugPrivilege	3812	powershell.exe
Token: SeDebugPrivilege	556	powershell.exe
Token: SeDebugPrivilege	1264	powershell.exe
Token: SeDebugPrivilege	4848	powershell.exe
Token: SeDebugPrivilege	952	powershell.exe
Token: SeDebugPrivilege	864	powershell.exe
Token: SeDebugPrivilege	860	powershell.exe
Token: SeBackupPrivilege	3636	vssvc.exe
Token: SeRestorePrivilege	3636	vssvc.exe
Token: SeAuditPrivilege	3636	vssvc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2432	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3816 wrote to memory of 4180	3816	BRATS V4.2‌‌.exe	80
PID 3816 wrote to memory of 4180	3816	BRATS V4.2‌‌.exe	80
PID 3816 wrote to memory of 4180	3816	BRATS V4.2‌‌.exe	80
PID 3816 wrote to memory of 2432	3816	BRATS V4.2‌‌.exe	81
PID 3816 wrote to memory of 2432	3816	BRATS V4.2‌‌.exe	81
PID 3816 wrote to memory of 3188	3816	BRATS V4.2‌‌.exe	82
PID 3816 wrote to memory of 3188	3816	BRATS V4.2‌‌.exe	82
PID 2432 wrote to memory of 2760	2432	svchost.exe	84
PID 2432 wrote to memory of 2760	2432	svchost.exe	84
PID 3188 wrote to memory of 3812	3188	csrss.exe	86
PID 3188 wrote to memory of 3812	3188	csrss.exe	86
PID 2432 wrote to memory of 556	2432	svchost.exe	89
PID 2432 wrote to memory of 556	2432	svchost.exe	89
PID 3188 wrote to memory of 1264	3188	csrss.exe	91
PID 3188 wrote to memory of 1264	3188	csrss.exe	91
PID 2432 wrote to memory of 4848	2432	svchost.exe	93
PID 2432 wrote to memory of 4848	2432	svchost.exe	93
PID 3188 wrote to memory of 952	3188	csrss.exe	95
PID 3188 wrote to memory of 952	3188	csrss.exe	95
PID 2432 wrote to memory of 864	2432	svchost.exe	97
PID 2432 wrote to memory of 864	2432	svchost.exe	97
PID 3188 wrote to memory of 860	3188	csrss.exe	99
PID 3188 wrote to memory of 860	3188	csrss.exe	99

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\BRATS V4.2‌‌.exe
"C:\Users\Admin\AppData\Local\Temp\BRATS V4.2‌‌.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3816
- C:\Users\Admin\AppData\Local\Temp\BRATS V4.2.exe
  "C:\Users\Admin\AppData\Local\Temp\BRATS V4.2.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:4180
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2432
- - 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\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2760
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:556
- - 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\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4848
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:864
- C:\ProgramData\csrss.exe
  "C:\ProgramData\csrss.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3188
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\csrss.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3812
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'csrss.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1264
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\csrss.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:952
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'csrss.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:860

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3636

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1436

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\csrss.exe

Filesize
28KB

MD5
4d250bcbc14b9b2076b4c651ee3b7deb

SHA1
f5cd7173e1797f085b2da82cfa3729e0144bc16b

SHA256
41a2f2ca1bdf22fcef635dba5bfd267d32c432aa2f9f00c1574465712d7a5260

SHA512
3c3ef5bf7ce6490864256c779493275710645b8cd6087e982b9f49cf1b76f35d1f38799e2641ba5bad00d616aac1eead7b922630795eb88d4a398964365007a2

Download Submit
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
b577f5e5ce7f7d4a220c6bde8041e5bb

SHA1
6745d982e8abde881dcb97a58dd78f010170a0be

SHA256
c232b84813368c796d25dc0b24f9c2a0a2818d60c09407396d7ec17fb82b592e

SHA512
e09696425f049926b75f35544d4db00065f8dd408f2504a105a6339fc9a85ba5ddea0f06131b3a6c0e87943964c53082180112050e5f121b38e45e8f16a43c2d

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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
22310ad6749d8cc38284aa616efcd100

SHA1
440ef4a0a53bfa7c83fe84326a1dff4326dcb515

SHA256
55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

SHA512
2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

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

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

Download Submit
C:\Users\Admin\AppData\Local\Temp\BRATS V4.2.exe

Filesize
9.9MB

MD5
aa8c4f53eb0b74b766271e6c241fa104

SHA1
406089a0fbb3b53267158b4a20f4b2d519d6fe59

SHA256
7d6c33ea84649c9a85a406ee059bf6b3262dd73f7423aa42dcb4882465900157

SHA512
995e117350853713bd3791f5db424c5d86af26ffb1d93b0018492ec41cdf8963032bb5077d46e248aa408579a3efdf32375733753400d647a784ded367d4895c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fhrc0my1.zfc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
76KB

MD5
7c1243aac3248ae75cc2bab7bf4dfaba

SHA1
3dd055ef06380e5886f59b76761132c36e8b3e8f

SHA256
dbf81c18b8fa71de185da60a70e41f5799405e5a8331e759b399cab5353a1eda

SHA512
3f643f2ec6ca210247eab13abfb2e7e73e0f8621e137c9c1fedc3390fbd5129d78dba438988fa6cf70800def4f60cc2a320e8f269b2bfeaa63bade64c5a2bcbf

Download Submit
memory/2432-36-0x00007FF8B1250000-0x00007FF8B1D11000-memory.dmp

Filesize
10.8MB

Download
memory/2432-34-0x0000000000B50000-0x0000000000B6A000-memory.dmp

Filesize
104KB

Download
memory/2432-146-0x00007FF8B1250000-0x00007FF8B1D11000-memory.dmp

Filesize
10.8MB

Download
memory/2760-55-0x000002504E170000-0x000002504E192000-memory.dmp

Filesize
136KB

Download
memory/3188-40-0x00000000000A0000-0x00000000000AE000-memory.dmp

Filesize
56KB

Download
memory/3816-39-0x00007FF8B1250000-0x00007FF8B1D11000-memory.dmp

Filesize
10.8MB

Download
memory/3816-1-0x0000000000E60000-0x000000000180E000-memory.dmp

Filesize
9.7MB

Download
memory/3816-4-0x00007FF8B1250000-0x00007FF8B1D11000-memory.dmp

Filesize
10.8MB

Download
memory/3816-0-0x00007FF8B1253000-0x00007FF8B1255000-memory.dmp

Filesize
8KB

Download
memory/4180-48-0x0000000000400000-0x0000000001403000-memory.dmp

Filesize
16.0MB

Download
memory/4180-43-0x0000000001580000-0x0000000001581000-memory.dmp

Filesize
4KB

Download
memory/4180-42-0x0000000001570000-0x0000000001571000-memory.dmp

Filesize
4KB

Download
memory/4180-41-0x0000000001560000-0x0000000001561000-memory.dmp

Filesize
4KB

Download
memory/4180-47-0x0000000003090000-0x0000000003091000-memory.dmp

Filesize
4KB

Download
memory/4180-46-0x0000000003080000-0x0000000003081000-memory.dmp

Filesize
4KB

Download
memory/4180-44-0x0000000001590000-0x0000000001591000-memory.dmp

Filesize
4KB

Download
memory/4180-45-0x0000000003070000-0x0000000003071000-memory.dmp

Filesize
4KB

Download