xworm | 5390974f82d7637e2131afe202866eff9cf5f14377636d9f5fb3d29c54093763

General

Target

Devoarmy.exe
Size

77KB
MD5

6bd4b2dd8dd52251e1ffcbb6a8101875
SHA1

04075dce494a7eaee97df11bbf4a429c9aec7e69
SHA256

5390974f82d7637e2131afe202866eff9cf5f14377636d9f5fb3d29c54093763
SHA512

51061ea462deb93b3b5f2164e446d1eecda6728fac7eb67b91af77da9e84170ddbdd2b707f6cf3b466e46f05506b15efb0a15ecac47068a7016a3917d4dada9b
SSDEEP

1536:ESmiUNs6qJrJgEkuUoGaOAR0Erg8aWc3buY2GGvOrOxT/uOwG6GtN0C:EidrJgEkqGaNST3bz2zJGOdP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

wiz.bounceme.net:6000

Mutex

TsV4Qhz4pSYYlqfv

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/3460-48-0x000000001C380000-0x000000001C38E000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
664	powershell.exe
396	powershell.exe
840	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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	Devoarmy.exe

Drops startup file 2 IoCs

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4988	timeout.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
664	powershell.exe
664	powershell.exe
396	powershell.exe
396	powershell.exe
840	powershell.exe
840	powershell.exe
840	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3460	Devoarmy.exe
Token: SeDebugPrivilege	664	powershell.exe
Token: SeDebugPrivilege	396	powershell.exe
Token: SeDebugPrivilege	840	powershell.exe
Token: SeDebugPrivilege	3460	Devoarmy.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3460 wrote to memory of 664	3460	Devoarmy.exe	91
PID 3460 wrote to memory of 664	3460	Devoarmy.exe	91
PID 3460 wrote to memory of 396	3460	Devoarmy.exe	94
PID 3460 wrote to memory of 396	3460	Devoarmy.exe	94
PID 3460 wrote to memory of 840	3460	Devoarmy.exe	96
PID 3460 wrote to memory of 840	3460	Devoarmy.exe	96
PID 3460 wrote to memory of 1288	3460	Devoarmy.exe	103
PID 3460 wrote to memory of 1288	3460	Devoarmy.exe	103
PID 1288 wrote to memory of 4988	1288	cmd.exe	105
PID 1288 wrote to memory of 4988	1288	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\Devoarmy.exe
"C:\Users\Admin\AppData\Local\Temp\Devoarmy.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3460
- 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\Devoarmy.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:664
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Devoarmy.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:396
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\Devoarmy.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:840
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF647.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1288
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4988

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
cae60f0ddddac635da71bba775a2c5b4

SHA1
386f1a036af61345a7d303d45f5230e2df817477

SHA256
b2dd636b7b0d3bfe44cef5e1175828b1fa7bd84d5563f54342944156ba996c16

SHA512
28ed8a8bc132ef56971cfd7b517b17cdb74a7f8c247ef6bff232996210075e06aa58a415825a1e038cfb547ad3dc6882bf1ca1b68c5b360ef0512a1440850253

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_41oghe40.q5y.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF647.tmp.bat

Filesize
160B

MD5
02ab2211a4e92cbc1072ec12486ca577

SHA1
14c015fe76435959464eca2c9d97249b11b3cc87

SHA256
bbd748d5f59377ab0fae80204426e23501d2d4a34144a7d43a451bd4621b0078

SHA512
64248783cdd41225759e15e62920895a659226c7ac6e7a911aff5df0ac75955666874ad09dd0d82174002c330dbb2ae9633bb59a13a81940d6e33988ef46f865

Download Submit
memory/664-18-0x00007FF8ECDD0000-0x00007FF8ED891000-memory.dmp

Filesize
10.8MB

Download
memory/664-14-0x00007FF8ECDD0000-0x00007FF8ED891000-memory.dmp

Filesize
10.8MB

Download
memory/664-15-0x00007FF8ECDD0000-0x00007FF8ED891000-memory.dmp

Filesize
10.8MB

Download
memory/664-9-0x000001BDEC750000-0x000001BDEC772000-memory.dmp

Filesize
136KB

Download
memory/664-3-0x00007FF8ECDD0000-0x00007FF8ED891000-memory.dmp

Filesize
10.8MB

Download
memory/3460-0-0x00007FF8ECDD3000-0x00007FF8ECDD5000-memory.dmp

Filesize
8KB

Download
memory/3460-2-0x00007FF8ECDD0000-0x00007FF8ED891000-memory.dmp

Filesize
10.8MB

Download
memory/3460-46-0x00007FF8ECDD3000-0x00007FF8ECDD5000-memory.dmp

Filesize
8KB

Download
memory/3460-47-0x00007FF8ECDD0000-0x00007FF8ED891000-memory.dmp

Filesize
10.8MB

Download
memory/3460-48-0x000000001C380000-0x000000001C38E000-memory.dmp

Filesize
56KB

Download
memory/3460-1-0x00000000007A0000-0x00000000007BA000-memory.dmp

Filesize
104KB

Download
memory/3460-56-0x00007FF8ECDD0000-0x00007FF8ED891000-memory.dmp

Filesize
10.8MB

Download

Analysis

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