xworm | bcca89e8ec351c026bb6650860d4ff0f1ed2bc02ee4874adfa57b1a464ac629b

General

Target

mnjxai.exe
Size

29KB
MD5

f2867efa7b2c31827f4e9d7c7ed5a5e1
SHA1

412f7653714eab545ed97f27d4af40b8f22d11e5
SHA256

bcca89e8ec351c026bb6650860d4ff0f1ed2bc02ee4874adfa57b1a464ac629b
SHA512

5dce27f7fad31bd6149022002a81a849f4222b18da1aad4298834aa04514a42a1b9e7c68aa67bf572254ac8db9dfe42d87e551fe32a83d23b8432cf8608ac485
SSDEEP

384:uzLn3QQwuJ+XJaQaZcxp9tTv1GBHY9VePKE1Fho4HW5431vtVkdrMAwhx0Vo/On9:Kn1wcmBFVQdPKExW54+d5MN/4h5

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

mode-clusters.gl.at.ply.gg:36304

Mutex

4ve1OmdqYAgbmjh9

Attributes

Install_directory
%ProgramData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000300000001e0ab-7.dat	family_xworm
behavioral1/memory/2020-17-0x0000000000AF0000-0x0000000000B00000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
3392	powershell.exe
1264	powershell.exe
4720	powershell.exe
2448	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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	mnjxai.exe
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	Anti Root.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77-system32.lnk	Anti Root.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77-system32.lnk	Anti Root.exe

Executes dropped EXE 1 IoCs

pid	Process
2020	Anti Root.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
23	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
3392	powershell.exe
3392	powershell.exe
1264	powershell.exe
1264	powershell.exe
4720	powershell.exe
4720	powershell.exe
2448	powershell.exe
2448	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2020	Anti Root.exe
Token: SeDebugPrivilege	3392	powershell.exe
Token: SeDebugPrivilege	1264	powershell.exe
Token: SeDebugPrivilege	4720	powershell.exe
Token: SeDebugPrivilege	2448	powershell.exe
Token: SeDebugPrivilege	2020	Anti Root.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 2020	2256	mnjxai.exe	89
PID 2256 wrote to memory of 2020	2256	mnjxai.exe	89
PID 2020 wrote to memory of 3392	2020	Anti Root.exe	95
PID 2020 wrote to memory of 3392	2020	Anti Root.exe	95
PID 2020 wrote to memory of 1264	2020	Anti Root.exe	97
PID 2020 wrote to memory of 1264	2020	Anti Root.exe	97
PID 2020 wrote to memory of 4720	2020	Anti Root.exe	99
PID 2020 wrote to memory of 4720	2020	Anti Root.exe	99
PID 2020 wrote to memory of 2448	2020	Anti Root.exe	101
PID 2020 wrote to memory of 2448	2020	Anti Root.exe	101

C:\Users\Admin\AppData\Local\Temp\mnjxai.exe
"C:\Users\Admin\AppData\Local\Temp\mnjxai.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Users\Admin\AppData\Local\Temp\Anti Root.exe
  "C:\Users\Admin\AppData\Local\Temp\Anti Root.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2020
- - 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\Anti Root.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3392
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Anti Root.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1264
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\$77-system32'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4720
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '$77-system32'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2448

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:348

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
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

Filesize
944B

MD5
a356532c425990db4039726b77cf4542

SHA1
d26b38cb9dc41f22e86a8db7d6329c873d95a9c1

SHA256
8fa952d7d8700d5be47a256fda4c1079c69486e47b2d91e4a3f2a0adaa163c11

SHA512
31c31ddcf7c944bce934f940d572b79ec371a988d31726a58e36093be5bd340260b0abbcea2cf5d48d34e68623b28d57ac4aa3a1cf2d0b302daf28a9940c7303

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

Filesize
944B

MD5
8ab6456a8ec71255cb9ead0bb5d27767

SHA1
bc9ff860086488478e7716f7ac4421e8f69795fb

SHA256
bcb14f15fbe23bf51a657c69b24f09cd51e33a2530f89ad17c44f660769611e2

SHA512
87c5368dbd7c85f341edf8992d8b1c87984f9a3549a4802c6054da4e12a8674f10f56d03afc1a72b2cfc40895150d3b0f4d9d4c355c79cdf364ace35eb8ebf15

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

Filesize
37KB

MD5
c2ad1fc110b833b20355756811e0fc31

SHA1
3102137ccabcbc3e525420a3b5b61f236f8e4ebc

SHA256
657d598396ea466a4cfb0dd2d0b932a6f5db5ced774a6c1708002688ae24bf60

SHA512
1173d812d64d4cd49efe2d6f27103852b650b86b2c0823f04690a4dbaedb460eaa383a669f1b42d199222de0069509244d67297821dc5c7ca7130b6c313a202b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2h00514i.umr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2020-17-0x0000000000AF0000-0x0000000000B00000-memory.dmp

Filesize
64KB

Download
memory/2020-18-0x00007FF9D4A80000-0x00007FF9D5541000-memory.dmp

Filesize
10.8MB

Download
memory/2020-68-0x00007FF9D4A80000-0x00007FF9D5541000-memory.dmp

Filesize
10.8MB

Download
memory/2020-16-0x00007FF9D4A80000-0x00007FF9D5541000-memory.dmp

Filesize
10.8MB

Download
memory/2020-69-0x00007FF9D4A80000-0x00007FF9D5541000-memory.dmp

Filesize
10.8MB

Download
memory/2020-70-0x000000001CE80000-0x000000001CF30000-memory.dmp

Filesize
704KB

Download
memory/2020-71-0x000000001D860000-0x000000001DD88000-memory.dmp

Filesize
5.2MB

Download
memory/2256-15-0x00007FF9D4A80000-0x00007FF9D5541000-memory.dmp

Filesize
10.8MB

Download
memory/2256-0-0x00007FF9D4A83000-0x00007FF9D4A85000-memory.dmp

Filesize
8KB

Download
memory/2256-3-0x00007FF9D4A80000-0x00007FF9D5541000-memory.dmp

Filesize
10.8MB

Download
memory/2256-1-0x00000000007F0000-0x00000000007FE000-memory.dmp

Filesize
56KB

Download
memory/3392-19-0x0000022D65DB0000-0x0000022D65DD2000-memory.dmp

Filesize
136KB

Download

Analysis

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