xworm | 23bd40410d0296e31261f08dcb871ccd8965bd7b610d7d1a5d3c9aaf88048b6c

General

Target

3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe
Size

114KB
MD5

62ed3d4b4bcced663a7cba48715843a9
SHA1

edb117c9a77f0b9f55491ec23f08a55a3340341f
SHA256

23bd40410d0296e31261f08dcb871ccd8965bd7b610d7d1a5d3c9aaf88048b6c
SHA512

eca0fe59599aa90af0963eeaa475bbebd09edc0e9befa6ff8546ee1b806a1f4e7d4a8386fbefdb016f4df33d3ff5b58de4d2338ada8737ec45c50db9725de883
SSDEEP

1536:JjYYfOtuaA3+pfbrp+ZY9QQK676lJOqVChiH0hLP+VVVVVVVVVVVVVVVVVVVVVVp:B0uaA3+pfbrpfOZfOqVbH0hLN0B

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:10967

22.ip.gl.ply.gg:10967

Attributes

Install_directory
%Userprofile%
install_file
dllhso.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4840-1-0x00000000007E0000-0x0000000000802000-memory.dmp	family_xworm
behavioral2/files/0x0005000000022a9f-56.dat	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
4376	powershell.exe
4900	powershell.exe
1616	powershell.exe
1772	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe

Executes dropped EXE 2 IoCs

pid	Process
4772	dllhso.exe
4364	dllhso.exe

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3204	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4376	powershell.exe
4376	powershell.exe
4900	powershell.exe
4900	powershell.exe
1616	powershell.exe
1616	powershell.exe
1772	powershell.exe
1772	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe
Token: SeDebugPrivilege	4376	powershell.exe
Token: SeDebugPrivilege	4900	powershell.exe
Token: SeDebugPrivilege	1616	powershell.exe
Token: SeDebugPrivilege	1772	powershell.exe
Token: SeDebugPrivilege	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe
Token: SeDebugPrivilege	4772	dllhso.exe
Token: SeDebugPrivilege	4364	dllhso.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4840 wrote to memory of 4376	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe	89
PID 4840 wrote to memory of 4376	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe	89
PID 4840 wrote to memory of 4900	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe	94
PID 4840 wrote to memory of 4900	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe	94
PID 4840 wrote to memory of 1616	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe	96
PID 4840 wrote to memory of 1616	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe	96
PID 4840 wrote to memory of 1772	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe	100
PID 4840 wrote to memory of 1772	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe	100
PID 4840 wrote to memory of 3204	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe	102
PID 4840 wrote to memory of 3204	4840	3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe	102

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe
"C:\Users\Admin\AppData\Local\Temp\3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4840
- 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\3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4376
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '3d25fe2989b3b9505c5b45751d1da232fe3715bff54c6900d82b99e7ad76e6c5N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4900
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\dllhso.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1616
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'dllhso.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1772
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "dllhso" /tr "C:\Users\Admin\dllhso.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3204

C:\Users\Admin\dllhso.exe
C:\Users\Admin\dllhso.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4772

C:\Users\Admin\dllhso.exe
C:\Users\Admin\dllhso.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4364

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

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\dllhso.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
11c9d68f1d3e6babbdd5fc799fabee5b

SHA1
0f4ee4b4b26a41bc4116728109d96075d0dcad9f

SHA256
cab7aeaa5824f89100a6634c448367eb618820f5ec72da2619278b4a27998949

SHA512
5a37be1585b544ede5f3ec6392ca930f12df3ef15257589f018dbb4a64fcd3c51d77feb49d810f776d58c433ca870a5820827a3d05ecf9b183ff31a41d14bcef

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

Filesize
944B

MD5
9078a011b49db705765cff4b845368b0

SHA1
533576940a2780b894e1ae46b17d2f4224051b77

SHA256
c89240e395a581db1b44d204e2bcbd5b0e7f636ac72585d8257e6b901f5a3615

SHA512
48e0896fc4818bb7e3f250c5cad70d5e4ce71d3f6a8d2d17d8becc36050c1de2a270fde8dea5bb3462f1e7f5eaf074053390934f26d0186113215a1c4e92dd1e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4h0hwl05.zbc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\dllhso.exe

Filesize
114KB

MD5
62ed3d4b4bcced663a7cba48715843a9

SHA1
edb117c9a77f0b9f55491ec23f08a55a3340341f

SHA256
23bd40410d0296e31261f08dcb871ccd8965bd7b610d7d1a5d3c9aaf88048b6c

SHA512
eca0fe59599aa90af0963eeaa475bbebd09edc0e9befa6ff8546ee1b806a1f4e7d4a8386fbefdb016f4df33d3ff5b58de4d2338ada8737ec45c50db9725de883

Download Submit
memory/4376-12-0x00007FFFFE6F0000-0x00007FFFFF1B1000-memory.dmp

Filesize
10.8MB

Download
memory/4376-17-0x00007FFFFE6F0000-0x00007FFFFF1B1000-memory.dmp

Filesize
10.8MB

Download
memory/4376-14-0x00007FFFFE6F0000-0x00007FFFFF1B1000-memory.dmp

Filesize
10.8MB

Download
memory/4376-13-0x00007FFFFE6F0000-0x00007FFFFF1B1000-memory.dmp

Filesize
10.8MB

Download
memory/4376-2-0x000002C02A9B0000-0x000002C02A9D2000-memory.dmp

Filesize
136KB

Download
memory/4840-0-0x00007FFFFE6F3000-0x00007FFFFE6F5000-memory.dmp

Filesize
8KB

Download
memory/4840-53-0x00007FFFFE6F3000-0x00007FFFFE6F5000-memory.dmp

Filesize
8KB

Download
memory/4840-54-0x00007FFFFE6F0000-0x00007FFFFF1B1000-memory.dmp

Filesize
10.8MB

Download
memory/4840-55-0x00007FFFFE6F0000-0x00007FFFFF1B1000-memory.dmp

Filesize
10.8MB

Download
memory/4840-1-0x00000000007E0000-0x0000000000802000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads