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/3908-1-0x0000000000BD0000-0x0000000000BE6000-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
4344	powershell.exe
408	powershell.exe
916	powershell.exe
4712	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-1-5-21-3442511616-637977696-3186306149-1000\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
3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4344	powershell.exe
4344	powershell.exe
408	powershell.exe
408	powershell.exe
916	powershell.exe
916	powershell.exe
4712	powershell.exe
4712	powershell.exe
3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe
Token: SeDebugPrivilege	4344	powershell.exe
Token: SeDebugPrivilege	408	powershell.exe
Token: SeDebugPrivilege	916	powershell.exe
Token: SeDebugPrivilege	4712	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3908 wrote to memory of 4344	3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	89
PID 3908 wrote to memory of 4344	3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	89
PID 3908 wrote to memory of 408	3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	93
PID 3908 wrote to memory of 408	3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	93
PID 3908 wrote to memory of 916	3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	95
PID 3908 wrote to memory of 916	3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	95
PID 3908 wrote to memory of 4712	3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	98
PID 3908 wrote to memory of 4712	3908	7a8fe7d881adece62bb6057d8306d8a0d417a810a81882149587958bbf39ff25.exe	98

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:3908
- 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:4344
- 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:408
- 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:916
- 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:4712

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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
ef72c47dbfaae0b9b0d09f22ad4afe20

SHA1
5357f66ba69b89440b99d4273b74221670129338

SHA256
692ec20c7039170fb199510f0436181fd155e6b4516d4d1c9e1675adf99aaa7f

SHA512
7514b6bc8dc39fa618223300be27cd535dc35b18c66b4a089e2302e72b3e0cac06d88a989fa1296feb386b3cbe2084019df6430c7f895071b76e04ce559a30b4

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_4hytmrle.gxu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3908-0-0x00007FFA0AAB3000-0x00007FFA0AAB5000-memory.dmp

Filesize
8KB

Download
memory/3908-1-0x0000000000BD0000-0x0000000000BE6000-memory.dmp

Filesize
88KB

Download
memory/3908-57-0x00007FFA0AAB0000-0x00007FFA0B571000-memory.dmp

Filesize
10.8MB

Download
memory/3908-58-0x00007FFA0AAB0000-0x00007FFA0B571000-memory.dmp

Filesize
10.8MB

Download
memory/4344-13-0x00007FFA0AAB0000-0x00007FFA0B571000-memory.dmp

Filesize
10.8MB

Download
memory/4344-14-0x00007FFA0AAB0000-0x00007FFA0B571000-memory.dmp

Filesize
10.8MB

Download
memory/4344-15-0x00007FFA0AAB0000-0x00007FFA0B571000-memory.dmp

Filesize
10.8MB

Download
memory/4344-18-0x00007FFA0AAB0000-0x00007FFA0B571000-memory.dmp

Filesize
10.8MB

Download
memory/4344-12-0x00007FFA0AAB0000-0x00007FFA0B571000-memory.dmp

Filesize
10.8MB

Download
memory/4344-7-0x000001CFBCB50000-0x000001CFBCB72000-memory.dmp

Filesize
136KB

Download

Analysis

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