xworm | 7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac

General

Target

7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe
Size

57KB
MD5

72798272d12c892963ba1520331a7ba7
SHA1

475c8c703fec75656132242746445a496c8bbfb2
SHA256

7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac
SHA512

fc59d55df3f527024986dbef62acaea8910a383d772402e8a96c45c07346685ef81b880aaf7caf451642797dece0386ea121048b7ca11d1a3fe3c6fe95338a42
SSDEEP

1536:zL4nvOCq2RCXkOlKHI6Or6kIIJ2vb/UEzsoO6LAJPxOsL6:zL4o2kiUdWbcqrA1xOsL6

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

192.168.10.71:1177

Attributes

Install_directory
%Public%
install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1684-1-0x0000000000C00000-0x0000000000C14000-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
4708	powershell.exe
3188	powershell.exe
4980	powershell.exe
3384	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	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Discordservices.lnk	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Discordservices.lnk	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
14	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4708	powershell.exe
4708	powershell.exe
3188	powershell.exe
3188	powershell.exe
4980	powershell.exe
4980	powershell.exe
3384	powershell.exe
3384	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1684	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe
Token: SeDebugPrivilege	4708	powershell.exe
Token: SeDebugPrivilege	3188	powershell.exe
Token: SeDebugPrivilege	4980	powershell.exe
Token: SeDebugPrivilege	3384	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 4708	1684	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe	87
PID 1684 wrote to memory of 4708	1684	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe	87
PID 1684 wrote to memory of 3188	1684	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe	89
PID 1684 wrote to memory of 3188	1684	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe	89
PID 1684 wrote to memory of 4980	1684	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe	91
PID 1684 wrote to memory of 4980	1684	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe	91
PID 1684 wrote to memory of 3384	1684	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe	93
PID 1684 wrote to memory of 3384	1684	7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe	93

C:\Users\Admin\AppData\Local\Temp\7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe
"C:\Users\Admin\AppData\Local\Temp\7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1684
- 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\7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4708
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '7f6351ccdc13e55801877c661b590bd574725c3380ca45a43c66dbb7ee0bf7ac.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3188
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\Discordservices'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4980
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Discordservices'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3384

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

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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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
fd98baf5a9c30d41317663898985593b

SHA1
ea300b99f723d2429d75a6c40e0838bf60f17aad

SHA256
9d97a5bbc88fdcceac25f293383f7e5ce242675460ffbfb2ee9090870c034e96

SHA512
bf4dbbd671b5d7afb326622a7c781f150860294d3dba7160330046c258c84a15981c70e50d84dc7faaa7cc8b8c90bf8df818b3f2d3806a8a3671dfe5e38fe7b0

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

Filesize
944B

MD5
60945d1a2e48da37d4ce8d9c56b6845a

SHA1
83e80a6acbeb44b68b0da00b139471f428a9d6c1

SHA256
314b91c00997034d6e015f40230d90ebbf57de5dc938b62c1a214d591793dbe3

SHA512
5d068f1d6443e26ae3cad1c80f969e50e5860967b314153c4d3b6efd1cfa39f0907c6427bec7fa43db079f258b6357e4e9a1b0b1a36b1481d2049ea0e67909ed

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iko3eyaw.0ld.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1684-1-0x0000000000C00000-0x0000000000C14000-memory.dmp

Filesize
80KB

Download
memory/1684-2-0x00007FFE2E5A0000-0x00007FFE2F061000-memory.dmp

Filesize
10.8MB

Download
memory/1684-0-0x00007FFE2E5A3000-0x00007FFE2E5A5000-memory.dmp

Filesize
8KB

Download
memory/1684-57-0x00007FFE2E5A0000-0x00007FFE2F061000-memory.dmp

Filesize
10.8MB

Download
memory/1684-56-0x00007FFE2E5A3000-0x00007FFE2E5A5000-memory.dmp

Filesize
8KB

Download
memory/4708-3-0x00007FFE2E5A0000-0x00007FFE2F061000-memory.dmp

Filesize
10.8MB

Download
memory/4708-18-0x00007FFE2E5A0000-0x00007FFE2F061000-memory.dmp

Filesize
10.8MB

Download
memory/4708-15-0x00007FFE2E5A0000-0x00007FFE2F061000-memory.dmp

Filesize
10.8MB

Download
memory/4708-10-0x000001D1E5370000-0x000001D1E5392000-memory.dmp

Filesize
136KB

Download
memory/4708-4-0x00007FFE2E5A0000-0x00007FFE2F061000-memory.dmp

Filesize
10.8MB

Download

Analysis

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