xworm | dabc8d69b304a27576205cc1054f7ea71ba89cc2ac9026f9863829c7622ba5b3

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-12-2024 03:23

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General

Target

BQ_PO#385995.exe
Size

398KB
MD5

7e3e88fad78dff83ea421084315bfd78
SHA1

2e185874ff61f0097b34ae66cdc09bbbf1951f62
SHA256

26c434592adaffa102b1cc61983fd9355dfa4fe0e06ad3acb50732892f67d466
SHA512

432da571335f6eb1b827eceb1bf0b0cc62b2a1a7734fce3374620769487e908916a39b0e4c94ef6e764f65f3ce7066040055e52d14a7b84bb1e1650ec355460f
SSDEEP

6144:OzzpHNxvSI3xlkVxOwDWcvPRavLhOPxersLWd3JyQdETiOhhe3DU705AN8u1tdQM:INxvSec3RMY+sLSZyyETvzck05AGuvr

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

69.174.100.131:7000

Mutex

I1KOVoZcD6Qqbmm9

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/5048-4-0x0000000000400000-0x000000000040E000-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 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3180	powershell.exe
3948	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	regasm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 428 set thread context of 5048	428	BQ_PO#385995.exe	83

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3180	powershell.exe
3180	powershell.exe
3948	powershell.exe
3948	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5048	regasm.exe
Token: SeDebugPrivilege	3180	powershell.exe
Token: SeDebugPrivilege	3948	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 428 wrote to memory of 5048	428	BQ_PO#385995.exe	83
PID 428 wrote to memory of 5048	428	BQ_PO#385995.exe	83
PID 428 wrote to memory of 5048	428	BQ_PO#385995.exe	83
PID 428 wrote to memory of 5048	428	BQ_PO#385995.exe	83
PID 428 wrote to memory of 5048	428	BQ_PO#385995.exe	83
PID 428 wrote to memory of 5048	428	BQ_PO#385995.exe	83
PID 428 wrote to memory of 5048	428	BQ_PO#385995.exe	83
PID 428 wrote to memory of 5048	428	BQ_PO#385995.exe	83
PID 428 wrote to memory of 3552	428	BQ_PO#385995.exe	84
PID 428 wrote to memory of 3552	428	BQ_PO#385995.exe	84
PID 428 wrote to memory of 3552	428	BQ_PO#385995.exe	84
PID 5048 wrote to memory of 3180	5048	regasm.exe	88
PID 5048 wrote to memory of 3180	5048	regasm.exe	88
PID 5048 wrote to memory of 3180	5048	regasm.exe	88
PID 5048 wrote to memory of 3948	5048	regasm.exe	95
PID 5048 wrote to memory of 3948	5048	regasm.exe	95
PID 5048 wrote to memory of 3948	5048	regasm.exe	95

C:\Users\Admin\AppData\Local\Temp\BQ_PO#385995.exe
"C:\Users\Admin\AppData\Local\Temp\BQ_PO#385995.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:428
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5048
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3180
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'regasm.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3948
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  PID:3552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

Filesize
18KB

MD5
4d7ec824948fa74fbbbae697be5fd2ff

SHA1
a2bd9d2b1775d9c4381f651c55bdc7807c2f3c50

SHA256
7f1ff3f6b3508dbf5a7621e9c2893307ba22e10d9ed3a465d8af93362a87581c

SHA512
1dcc6defe93e6eb2a1c0175e43d1990a3a3e3b5b54d4c573d06a4e7d9da86135ae090519ea6dce940090dcf679d74d24b3a672777e262e530e3bdd3ba52eec1c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xmoysoar.hra.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/428-1-0x00007FF849A43000-0x00007FF849A45000-memory.dmp

Filesize
8KB

Download
memory/428-2-0x000002318DAB0000-0x000002318DB10000-memory.dmp

Filesize
384KB

Download
memory/428-3-0x00007FF849A40000-0x00007FF84A501000-memory.dmp

Filesize
10.8MB

Download
memory/428-0-0x000002318D4F0000-0x000002318D558000-memory.dmp

Filesize
416KB

Download
memory/428-7-0x00007FF849A40000-0x00007FF84A501000-memory.dmp

Filesize
10.8MB

Download
memory/3180-28-0x0000000006E60000-0x0000000006E92000-memory.dmp

Filesize
200KB

Download
memory/3180-42-0x00000000081E0000-0x000000000885A000-memory.dmp

Filesize
6.5MB

Download
memory/3180-10-0x00000000744F0000-0x0000000074CA0000-memory.dmp

Filesize
7.7MB

Download
memory/3180-11-0x00000000744F0000-0x0000000074CA0000-memory.dmp

Filesize
7.7MB

Download
memory/3180-12-0x00000000744F0000-0x0000000074CA0000-memory.dmp

Filesize
7.7MB

Download
memory/3180-13-0x00000000058C0000-0x00000000058E2000-memory.dmp

Filesize
136KB

Download
memory/3180-15-0x0000000006230000-0x0000000006296000-memory.dmp

Filesize
408KB

Download
memory/3180-8-0x00000000052B0000-0x00000000052E6000-memory.dmp

Filesize
216KB

Download
memory/3180-14-0x00000000061C0000-0x0000000006226000-memory.dmp

Filesize
408KB

Download
memory/3180-25-0x00000000062A0000-0x00000000065F4000-memory.dmp

Filesize
3.3MB

Download
memory/3180-26-0x0000000006870000-0x000000000688E000-memory.dmp

Filesize
120KB

Download
memory/3180-27-0x00000000068C0000-0x000000000690C000-memory.dmp

Filesize
304KB

Download
memory/3180-53-0x00000000744F0000-0x0000000074CA0000-memory.dmp

Filesize
7.7MB

Download
memory/3180-29-0x000000006FAA0000-0x000000006FAEC000-memory.dmp

Filesize
304KB

Download
memory/3180-39-0x0000000007850000-0x000000000786E000-memory.dmp

Filesize
120KB

Download
memory/3180-50-0x0000000007EE0000-0x0000000007EE8000-memory.dmp

Filesize
32KB

Download
memory/3180-41-0x0000000007870000-0x0000000007913000-memory.dmp

Filesize
652KB

Download
memory/3180-9-0x0000000005920000-0x0000000005F48000-memory.dmp

Filesize
6.2MB

Download
memory/3180-43-0x0000000007BA0000-0x0000000007BBA000-memory.dmp

Filesize
104KB

Download
memory/3180-44-0x0000000007C10000-0x0000000007C1A000-memory.dmp

Filesize
40KB

Download
memory/3180-45-0x0000000007E20000-0x0000000007EB6000-memory.dmp

Filesize
600KB

Download
memory/3180-46-0x0000000007DA0000-0x0000000007DB1000-memory.dmp

Filesize
68KB

Download
memory/3180-47-0x0000000007DF0000-0x0000000007DFE000-memory.dmp

Filesize
56KB

Download
memory/3180-48-0x0000000007E00000-0x0000000007E14000-memory.dmp

Filesize
80KB

Download
memory/3180-49-0x0000000007F00000-0x0000000007F1A000-memory.dmp

Filesize
104KB

Download
memory/3948-60-0x0000000005520000-0x0000000005874000-memory.dmp

Filesize
3.3MB

Download
memory/3948-66-0x000000006FAA0000-0x000000006FAEC000-memory.dmp

Filesize
304KB

Download
memory/5048-40-0x00000000744FE000-0x00000000744FF000-memory.dmp

Filesize
4KB

Download
memory/5048-6-0x0000000005650000-0x00000000056EC000-memory.dmp

Filesize
624KB

Download
memory/5048-5-0x00000000744FE000-0x00000000744FF000-memory.dmp

Filesize
4KB

Download
memory/5048-4-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/5048-77-0x00000000744F0000-0x0000000074CA0000-memory.dmp

Filesize
7.7MB

Download
memory/5048-78-0x00000000744F0000-0x0000000074CA0000-memory.dmp

Filesize
7.7MB

Download
memory/5048-79-0x0000000006800000-0x0000000006892000-memory.dmp

Filesize
584KB

Download
memory/5048-80-0x0000000006E50000-0x00000000073F4000-memory.dmp

Filesize
5.6MB

Download