xworm | 7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25

General

Target

7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe
Size

63KB
MD5

754c64b6e93a932952e1d86b66213486
SHA1

f23268af58f8b4758e1a98619fa4640139c88e99
SHA256

7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25
SHA512

16417885aaf1a72b4c58d9bb3e5bc1b55692ac9ad0d963397ac27f53c982aaf9a07d1efce8ab37479b73157b8bbb678f94bfeff5b0fc27d3784e5cdd1704555f
SSDEEP

1536:jv0nbrF7oGDVxO13pmjLpgTC1Vsy9bAGS5bHIeS1Uc6WOTSXnTe:jvjCzO1UFky9bAGwjuyAOTKK

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

146.190.110.91:3389

Attributes

Install_directory
%AppData%
install_file
smartscreen.exe
telegram
https://api.telegram.org/bot8033290183:AAFGRm9tWSgOpPIATZ1BFGl9qpuLMlAya54/sendMessage?chat_id=8085766327

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4324-1-0x0000000000890000-0x00000000008A6000-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
2124	powershell.exe
2568	powershell.exe
4296	powershell.exe
3376	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\smartscreen.lnk	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\smartscreen.lnk	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.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
4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2124	powershell.exe
2124	powershell.exe
2568	powershell.exe
2568	powershell.exe
4296	powershell.exe
4296	powershell.exe
3376	powershell.exe
3376	powershell.exe
4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe
Token: SeDebugPrivilege	2124	powershell.exe
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	4296	powershell.exe
Token: SeDebugPrivilege	3376	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 2124	4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	91
PID 4324 wrote to memory of 2124	4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	91
PID 4324 wrote to memory of 2568	4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	96
PID 4324 wrote to memory of 2568	4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	96
PID 4324 wrote to memory of 4296	4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	99
PID 4324 wrote to memory of 4296	4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	99
PID 4324 wrote to memory of 3376	4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	101
PID 4324 wrote to memory of 3376	4324	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	101

C:\Users\Admin\AppData\Local\Temp\7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe
"C:\Users\Admin\AppData\Local\Temp\7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4324
- 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\7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2124
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2568
- 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\smartscreen.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4296
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'smartscreen.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3376

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

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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
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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

Filesize
944B

MD5
10fb30dc297f99d6ebafa5fee8b24fa2

SHA1
76904509313a49a765edcde26b69c3a61f9fa225

SHA256
567bcacac120711fc04bf8e6c8cd0bff7b61e8ee0a6316254d1005ebb1264e6a

SHA512
c42ace1ea0923fa55592f4f486a508ea56997fdbe0200016b0fc16a33452fc28e4530129a315b3b3a5ede37a07097c13a0eb310c9e91e5d97bb7ce7b955b9498

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

Filesize
944B

MD5
b51dc9e5ec3c97f72b4ca9488bbb4462

SHA1
5c1e8c0b728cd124edcacefb399bbd5e25b21bd3

SHA256
976f9534aa2976c85c2455bdde786a3f55d63aefdd40942eba1223c4c93590db

SHA512
0e5aa6cf64c535aefb833e5757b68e1094c87424abe2615a7d7d26b1b31eff358d12e36e75ca57fd690a9919b776600bf4c5c0e5a5df55366ba62238bdf3f280

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_b2gq0nvp.h2o.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2124-13-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

Filesize
10.8MB

Download
memory/2124-14-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

Filesize
10.8MB

Download
memory/2124-17-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

Filesize
10.8MB

Download
memory/2124-12-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

Filesize
10.8MB

Download
memory/2124-7-0x000002815CE90000-0x000002815CEB2000-memory.dmp

Filesize
136KB

Download
memory/4324-0-0x00007FFF2B5F3000-0x00007FFF2B5F5000-memory.dmp

Filesize
8KB

Download
memory/4324-1-0x0000000000890000-0x00000000008A6000-memory.dmp

Filesize
88KB

Download
memory/4324-56-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

Filesize
10.8MB

Download
memory/4324-57-0x00007FFF2B5F3000-0x00007FFF2B5F5000-memory.dmp

Filesize
8KB

Download
memory/4324-58-0x00007FFF2B5F0000-0x00007FFF2C0B1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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