xworm | 682996a7019be86068d43a44152d84f6aa3521737189a1cbb54a23dd40d940ab

General

Target

682996a7019be86068d43a44152d84f6aa3521737189a1cbb54a23dd40d940ab.exe
Size

259KB
MD5

b3cc8df3c4d0ff7c3dc89558c0d154e6
SHA1

7e145e19d9cf48227b1337c15840b0ce71ff1f6a
SHA256

682996a7019be86068d43a44152d84f6aa3521737189a1cbb54a23dd40d940ab
SHA512

4ee5f776d25c331784129258b10f0e327c69a300ee1726e51e4aa39a4be6f1ea57072a6f600605bd4fb5d553dd526828161366e679149b74ce8a65bcd83a63fa
SSDEEP

3072:tYGJepqxsscTtaXVFm7TyS6cLlxFVJPykf3CTh2N3pqjjwy8:jzxsXZFTj6cJxFVAkqV2N3Uj

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

dsasinject-58214.portmap.io:3389

Attributes

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

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x00050000000230d8-7.dat	family_xworm
behavioral2/memory/1280-27-0x0000000000270000-0x0000000000286000-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 8 IoCs

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

execution

PowerShell

T1059.001

pid	Process
888	powershell.exe
1172	powershell.exe
4068	powershell.exe
4328	powershell.exe
4944	powershell.exe
4912	powershell.exe
2304	powershell.exe
508	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	682996a7019be86068d43a44152d84f6aa3521737189a1cbb54a23dd40d940ab.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	KeyAuth.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	Auth.exe

Drops startup file 4 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1280	KeyAuth.exe
3136	Auth.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
3136	Auth.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
508	powershell.exe
508	powershell.exe
888	powershell.exe
888	powershell.exe
888	powershell.exe
4068	powershell.exe
1172	powershell.exe
1172	powershell.exe
1172	powershell.exe
4068	powershell.exe
4068	powershell.exe
4328	powershell.exe
4944	powershell.exe
4328	powershell.exe
4328	powershell.exe
4944	powershell.exe
4944	powershell.exe
4912	powershell.exe
4912	powershell.exe
2304	powershell.exe
2304	powershell.exe
4912	powershell.exe
2304	powershell.exe
1280	KeyAuth.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	1280	KeyAuth.exe
Token: SeDebugPrivilege	3136	Auth.exe
Token: SeDebugPrivilege	508	powershell.exe
Token: SeDebugPrivilege	888	powershell.exe
Token: SeDebugPrivilege	4068	powershell.exe
Token: SeDebugPrivilege	1172	powershell.exe
Token: SeDebugPrivilege	4944	powershell.exe
Token: SeDebugPrivilege	4328	powershell.exe
Token: SeDebugPrivilege	4912	powershell.exe
Token: SeDebugPrivilege	2304	powershell.exe
Token: SeBackupPrivilege	208	vssvc.exe
Token: SeRestorePrivilege	208	vssvc.exe
Token: SeAuditPrivilege	208	vssvc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1280	KeyAuth.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3132 wrote to memory of 1280	3132	682996a7019be86068d43a44152d84f6aa3521737189a1cbb54a23dd40d940ab.exe	90
PID 3132 wrote to memory of 1280	3132	682996a7019be86068d43a44152d84f6aa3521737189a1cbb54a23dd40d940ab.exe	90
PID 3132 wrote to memory of 3136	3132	682996a7019be86068d43a44152d84f6aa3521737189a1cbb54a23dd40d940ab.exe	92
PID 3132 wrote to memory of 3136	3132	682996a7019be86068d43a44152d84f6aa3521737189a1cbb54a23dd40d940ab.exe	92
PID 1280 wrote to memory of 508	1280	KeyAuth.exe	98
PID 1280 wrote to memory of 508	1280	KeyAuth.exe	98
PID 3136 wrote to memory of 888	3136	Auth.exe	100
PID 3136 wrote to memory of 888	3136	Auth.exe	100
PID 1280 wrote to memory of 1172	1280	KeyAuth.exe	102
PID 1280 wrote to memory of 1172	1280	KeyAuth.exe	102
PID 3136 wrote to memory of 4068	3136	Auth.exe	104
PID 3136 wrote to memory of 4068	3136	Auth.exe	104
PID 1280 wrote to memory of 4328	1280	KeyAuth.exe	106
PID 1280 wrote to memory of 4328	1280	KeyAuth.exe	106
PID 3136 wrote to memory of 4944	3136	Auth.exe	107
PID 3136 wrote to memory of 4944	3136	Auth.exe	107
PID 1280 wrote to memory of 4912	1280	KeyAuth.exe	112
PID 1280 wrote to memory of 4912	1280	KeyAuth.exe	112
PID 3136 wrote to memory of 2304	3136	Auth.exe	114
PID 3136 wrote to memory of 2304	3136	Auth.exe	114

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\682996a7019be86068d43a44152d84f6aa3521737189a1cbb54a23dd40d940ab.exe
"C:\Users\Admin\AppData\Local\Temp\682996a7019be86068d43a44152d84f6aa3521737189a1cbb54a23dd40d940ab.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3132
- C:\Users\Admin\AppData\Local\KeyAuth.exe
  "C:\Users\Admin\AppData\Local\KeyAuth.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:1280
- - 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\KeyAuth.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:508
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'KeyAuth.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1172
- - 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\KeyAuth.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4328
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'KeyAuth.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4912
- C:\Users\Admin\AppData\Roaming\Auth.exe
  "C:\Users\Admin\AppData\Roaming\Auth.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3136
- - 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\Auth.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:888
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Auth.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4068
- - 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\Auth.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4944
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Auth.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2304

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:208

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\KeyAuth.exe

Filesize
66KB

MD5
326bd2aecd1facc6c839ca0fedca3f96

SHA1
dbfe7fb1feb2c37ada12cf924d00b12328069749

SHA256
faea87eb85439c356a898ae69b825343519e9ee07fc9142150c6cfd832a800db

SHA512
2ac479a64ce6f26b4e7014ac5ef58ec00027936e2d4ba731d9dc763dea84ed1977b990d0e3a352688cd016484605fa28f27c566788d609faa75c7e67579d7921

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
cff81b31909fbf8df6617136d6cb6605

SHA1
3bd85e728f4489a671764547e3d18dd01fe9e0a4

SHA256
3848c70d76babfa835b5d4e83c1486f51018d03d746e1449d86a1174d52677b0

SHA512
a38db85931dc6cdc83077f217a93b56404d78ec1d7c77e3d563f8a1b515f695749f7da4185e23827a6095761ea7324d3d83d86680c6f5ade433c777cf679ac72

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
47605a4dda32c9dff09a9ca441417339

SHA1
4f68c895c35b0dc36257fc8251e70b968c560b62

SHA256
e6254c2bc9846a76a4567ab91b6eae76e937307ff9301b65d577ffe6e15fe40a

SHA512
b6823b6e794a2fe3e4c4ecfb3f0d61a54821de7feb4f9e3e7fd463e7fbb5e6848f59865b487dafebeac431e4f4db81ef56836d94cac67da39852c566ed34a885

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

Filesize
944B

MD5
54522d22658e4f8f87ecb947b71b8feb

SHA1
6a6144bdf9c445099f52211b6122a2ecf72b77e9

SHA256
af18fc4864bc2982879aed928c960b6266f372c928f8c9632c5a4eecd64e448a

SHA512
55f2c5a455be20dcb4cb93a29e5389e0422237bdd7ac40112fec6f16a36e5e19df50d25d39a6d5acb2d41a96514c7ecd8631ce8e67c4ff04997282f49d947aba

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4lwqffze.jvj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
33KB

MD5
0326c22b86f5f2f350bbae78a87727c4

SHA1
7ca885b4765979551a6fe142725cfdaea5a316d7

SHA256
b743c631f487357e4b67d30249b0774150c16323b587e5e7241e7e29599cbe20

SHA512
21508978bb276a6cde8266cf0ab90c4aa2c0e38bdae6fe3e20915a427da93e914f37f741e4023932f5fa88f0d6d275bcccf0d15486871fa4075ce9a586dc7232

Download Submit
memory/508-33-0x0000018ABD0F0000-0x0000018ABD112000-memory.dmp

Filesize
136KB

Download
memory/1280-25-0x00007FFBA0D80000-0x00007FFBA1841000-memory.dmp

Filesize
10.8MB

Download
memory/1280-27-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/1280-124-0x00007FFBA0D80000-0x00007FFBA1841000-memory.dmp

Filesize
10.8MB

Download
memory/1280-126-0x00007FFBA0D80000-0x00007FFBA1841000-memory.dmp

Filesize
10.8MB

Download
memory/3132-0-0x00007FFBA0D83000-0x00007FFBA0D85000-memory.dmp

Filesize
8KB

Download
memory/3132-32-0x00007FFBA0D80000-0x00007FFBA1841000-memory.dmp

Filesize
10.8MB

Download
memory/3132-4-0x00007FFBA0D80000-0x00007FFBA1841000-memory.dmp

Filesize
10.8MB

Download
memory/3132-1-0x00000000005C0000-0x0000000000606000-memory.dmp

Filesize
280KB

Download
memory/3136-31-0x0000000000270000-0x000000000027E000-memory.dmp

Filesize
56KB

Download
memory/3136-30-0x00007FFBA0D80000-0x00007FFBA1841000-memory.dmp

Filesize
10.8MB

Download
memory/3136-127-0x00007FFBA0D80000-0x00007FFBA1841000-memory.dmp

Filesize
10.8MB

Download

Analysis

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