xworm | d9893a1d31b8338aedd6f9116cb5dc2c04ace45ca6f065e829ecb68c41db96c7

General

Target

wizwormv4.exe
Size

13.3MB
MD5

326cae42b360bc91696a9a09d1f497f9
SHA1

9162a3fa7edd91db0b4b209ffb632f4933530e19
SHA256

d9893a1d31b8338aedd6f9116cb5dc2c04ace45ca6f065e829ecb68c41db96c7
SHA512

a89d1551d86502d222346d44337cccabb0de1586e0d1b8981b9e63676c2341054d61fdb77d07df3aeca0920b60de5031f45067bd23bf3bb0e198224f441c910a
SSDEEP

393216:uOLsLayrPGrYlesyvrNxJ/2eMxV3ODQvT6O9lDp2h:jALHbOEiNiDhmQjg

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

3.0

C2

3skr.uncofig.com:9999

Mutex

wRjQMjeNtaZnUCMU

Attributes

Install_directory
%AppData%
install_file
USB.exe
telegram
https://api.telegram.org/bot7942324376:AAFz5Z-GdKIj1CePZyqIUmvNWOymMRw8Lmk/sendMessage?chat_id=2078478344

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023c72-13.dat	family_xworm
behavioral2/memory/2624-16-0x00000000000A0000-0x00000000000B0000-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 3 IoCs

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

execution

PowerShell

T1059.001

pid	Process
1392	powershell.exe
5084	powershell.exe
1532	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	wizwormv4.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	set.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2624	set.exe
2604	WizWorm.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
17	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 7 IoCs

pid	Process
1532	powershell.exe
1532	powershell.exe
1392	powershell.exe
1392	powershell.exe
5084	powershell.exe
5084	powershell.exe
2624	set.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2624	set.exe
Token: SeDebugPrivilege	1532	powershell.exe
Token: SeDebugPrivilege	1392	powershell.exe
Token: SeDebugPrivilege	5084	powershell.exe
Token: SeDebugPrivilege	2624	set.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2624	set.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3692 wrote to memory of 2624	3692	wizwormv4.exe	83
PID 3692 wrote to memory of 2624	3692	wizwormv4.exe	83
PID 3692 wrote to memory of 2604	3692	wizwormv4.exe	84
PID 3692 wrote to memory of 2604	3692	wizwormv4.exe	84
PID 2624 wrote to memory of 1532	2624	set.exe	97
PID 2624 wrote to memory of 1532	2624	set.exe	97
PID 2624 wrote to memory of 1392	2624	set.exe	99
PID 2624 wrote to memory of 1392	2624	set.exe	99
PID 2624 wrote to memory of 5084	2624	set.exe	101
PID 2624 wrote to memory of 5084	2624	set.exe	101

C:\Users\Admin\AppData\Local\Temp\wizwormv4.exe
"C:\Users\Admin\AppData\Local\Temp\wizwormv4.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3692
- C:\Users\Admin\AppData\Local\Temp\set.exe
  "C:\Users\Admin\AppData\Local\Temp\set.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:2624
- - 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\set.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1532
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'set.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1392
- - 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\set.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5084
- C:\Users\Admin\AppData\Local\Temp\WizWorm.exe
  "C:\Users\Admin\AppData\Local\Temp\WizWorm.exe"
  2⤵
  - Executes dropped EXE
  PID:2604

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
da185fddf7e751e39023edde12930f37

SHA1
657fcb7fda401b69d3bb97e7b6abf126ac36d4b2

SHA256
8928226805a92acd76d21e1a276176d9af3ca1ec31f14e45a2b4b88f4722cad5

SHA512
db7bc02a1bd86d587840a56334dee9cb80aa0a8635cd2eb1c490bc5466659350de4d625f320731e34fac235016515d0dddc05a6081149dc6c2e82c262be6b975

Download Submit
C:\Users\Admin\AppData\Local\Temp\WizWorm.exe

Filesize
19.8MB

MD5
df02e1780dd49d8f537b1250211696fa

SHA1
ed88bba690cae57196ba10fa01ec1b86f6a39fd6

SHA256
27d5ba22bafbd94685f9c8cd3e6ebabd88e2a94bbd6be8ec25ec023b0e5c066d

SHA512
fef2bbc7840fa1066ac696d0da731adaa2d57b5a63b94cf7362ede33cb590452ddd9ec253d4c03b8b7e86e93fa4a367c0882fa8f498f40a19944ccad4674d223

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gjumhtcj.lwy.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\set.exe

Filesize
38KB

MD5
e1929d0781ff08abf8be3051479043b6

SHA1
0605a5657e022bd1cadf80f13446c678728dcde9

SHA256
b4ae6a462c5f24bec5870f6e92d94a00b1e1a4abd95e5433d6ac99a0f9d92042

SHA512
fb47c341b636293d500f1892f02e2be2b16bd0301eedc0c30025c00ae22ce3fe6d42abc0a4837cc5551eeed6cd5bbe815a0301db86bac6a84177a6c103d54d27

Download Submit
memory/1392-60-0x000002436CB90000-0x000002436CDAC000-memory.dmp

Filesize
2.1MB

Download
memory/1532-40-0x0000028CF9B10000-0x0000028CF9B32000-memory.dmp

Filesize
136KB

Download
memory/1532-47-0x0000028CF9CE0000-0x0000028CF9EFC000-memory.dmp

Filesize
2.1MB

Download
memory/2604-33-0x00007FF8ABFF0000-0x00007FF8ACAB1000-memory.dmp

Filesize
10.8MB

Download
memory/2604-32-0x00000212D02E0000-0x00000212D16BA000-memory.dmp

Filesize
19.9MB

Download
memory/2604-31-0x00007FF8ABFF0000-0x00007FF8ACAB1000-memory.dmp

Filesize
10.8MB

Download
memory/2624-34-0x00007FF8ABFF0000-0x00007FF8ACAB1000-memory.dmp

Filesize
10.8MB

Download
memory/2624-16-0x00000000000A0000-0x00000000000B0000-memory.dmp

Filesize
64KB

Download
memory/2624-15-0x00007FF8ABFF0000-0x00007FF8ACAB1000-memory.dmp

Filesize
10.8MB

Download
memory/2624-76-0x00007FF8ABFF0000-0x00007FF8ACAB1000-memory.dmp

Filesize
10.8MB

Download
memory/3692-0-0x00007FF8ABFF3000-0x00007FF8ABFF5000-memory.dmp

Filesize
8KB

Download
memory/3692-30-0x00007FF8ABFF0000-0x00007FF8ACAB1000-memory.dmp

Filesize
10.8MB

Download
memory/3692-4-0x00007FF8ABFF0000-0x00007FF8ACAB1000-memory.dmp

Filesize
10.8MB

Download
memory/3692-1-0x0000000000ED0000-0x0000000001C1E000-memory.dmp

Filesize
13.3MB

Download

Analysis

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