xworm | e1ec71b442828928a51c9999db39fb3e3a299bc0abe1a3efc08337ef6f70b491

General

Target

dbgtest.exe
Size

2.0MB
MD5

5d25e60bed5aba0e6efa612900aa0e93
SHA1

bd0f1e14266e557ceb700b2edc14c20fea0d6148
SHA256

e1ec71b442828928a51c9999db39fb3e3a299bc0abe1a3efc08337ef6f70b491
SHA512

963d402b04088578b9ce3870579f85168282b44062d60d08f2382dba6aa9b5811d542925e837827b7ae9417144e09b04f4ea03ad849b65082f91377291da9a09
SSDEEP

24576:2B6j6meQdxUdZjtm7Wi3TUxk+6c3gD0uvUz4n+qsZUnKxRWxRAUGCw1n7JvXDeZe:v7WhZ6W7TcntsvivNE

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

C2

45.84.199.152:7000

Attributes

Install_directory
%Public%
install_file
Msedge.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x00080000000231f5-3.dat	family_xworm
behavioral1/memory/1740-4-0x0000000000040000-0x0000000000078000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	msedge.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
1740	msedge.exe
64	Msedge.exe
3596	Msedge.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
27	ip-api.com

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\msedge.exe	dbgtest.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName	taskmgr.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
4036	schtasks.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
1856	powershell.exe
1856	powershell.exe
4180	powershell.exe
4180	powershell.exe
1008	powershell.exe
1008	powershell.exe
1636	powershell.exe
1636	powershell.exe
1740	msedge.exe
1740	msedge.exe
1740	msedge.exe
1740	msedge.exe
1740	msedge.exe
1740	msedge.exe
1740	msedge.exe
1740	msedge.exe
1740	msedge.exe
1740	msedge.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	1740	msedge.exe
Token: SeDebugPrivilege	1856	powershell.exe
Token: SeDebugPrivilege	4180	powershell.exe
Token: SeDebugPrivilege	1008	powershell.exe
Token: SeDebugPrivilege	1636	powershell.exe
Token: SeDebugPrivilege	1740	msedge.exe
Token: SeDebugPrivilege	3824	taskmgr.exe
Token: SeSystemProfilePrivilege	3824	taskmgr.exe
Token: SeCreateGlobalPrivilege	3824	taskmgr.exe
Token: 33	3824	taskmgr.exe
Token: SeIncBasePriorityPrivilege	3824	taskmgr.exe
Token: SeDebugPrivilege	64	Msedge.exe
Token: SeDebugPrivilege	3596	Msedge.exe

Suspicious use of FindShellTrayWindow 29 IoCs

pid	Process
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe

Suspicious use of SendNotifyMessage 29 IoCs

pid	Process
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe
3824	taskmgr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1740	msedge.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3228 wrote to memory of 2188	3228	dbgtest.exe	85
PID 3228 wrote to memory of 2188	3228	dbgtest.exe	85
PID 2188 wrote to memory of 1740	2188	cmd.exe	86
PID 2188 wrote to memory of 1740	2188	cmd.exe	86
PID 3228 wrote to memory of 2200	3228	dbgtest.exe	87
PID 3228 wrote to memory of 2200	3228	dbgtest.exe	87
PID 2200 wrote to memory of 2192	2200	cmd.exe	88
PID 2200 wrote to memory of 2192	2200	cmd.exe	88
PID 2200 wrote to memory of 2300	2200	cmd.exe	89
PID 2200 wrote to memory of 2300	2200	cmd.exe	89
PID 2200 wrote to memory of 3004	2200	cmd.exe	90
PID 2200 wrote to memory of 3004	2200	cmd.exe	90
PID 1740 wrote to memory of 1856	1740	msedge.exe	96
PID 1740 wrote to memory of 1856	1740	msedge.exe	96
PID 1740 wrote to memory of 4180	1740	msedge.exe	98
PID 1740 wrote to memory of 4180	1740	msedge.exe	98
PID 1740 wrote to memory of 1008	1740	msedge.exe	100
PID 1740 wrote to memory of 1008	1740	msedge.exe	100
PID 1740 wrote to memory of 1636	1740	msedge.exe	102
PID 1740 wrote to memory of 1636	1740	msedge.exe	102
PID 1740 wrote to memory of 4036	1740	msedge.exe	105
PID 1740 wrote to memory of 4036	1740	msedge.exe	105

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\dbgtest.exe
"C:\Users\Admin\AppData\Local\Temp\dbgtest.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3228
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c start C:\Windows\msedge.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\Windows\msedge.exe
    C:\Windows\msedge.exe
    3⤵
    - 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:1740
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\msedge.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1856
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'msedge.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4180
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\Msedge.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1008
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Msedge.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1636
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Msedge" /tr "C:\Users\Public\Msedge.exe"
      4⤵
      Creates scheduled task(s)
      PID:4036
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\dbgtest.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2200
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\dbgtest.exe" MD5
    3⤵
    PID:2192
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:2300
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:3004

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /0
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3824

C:\Users\Public\Msedge.exe
C:\Users\Public\Msedge.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:64

C:\Users\Public\Msedge.exe
C:\Users\Public\Msedge.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Msedge.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
2979eabc783eaca50de7be23dd4eafcf

SHA1
d709ce5f3a06b7958a67e20870bfd95b83cad2ea

SHA256
006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903

SHA512
92bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba

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

Filesize
944B

MD5
b51dc9e5ec3c97f72b4ca9488bbb4462

SHA1
5c1e8c0b728cd124edcacefb399bbd5e25b21bd3

SHA256
976f9534aa2976c85c2455bdde786a3f55d63aefdd40942eba1223c4c93590db

SHA512
0e5aa6cf64c535aefb833e5757b68e1094c87424abe2615a7d7d26b1b31eff358d12e36e75ca57fd690a9919b776600bf4c5c0e5a5df55366ba62238bdf3f280

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

Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kuaz03je.c41.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\msedge.exe

Filesize
204KB

MD5
4738e3496a3efe5f19c57b764eb5ba9b

SHA1
da9163944b1f51438b2602cbc95660af43172065

SHA256
cb51764f19e66bb6accd7f0418332bac7759073ed245f0633dddd53f68e81933

SHA512
4cb3029e136471edf2ebb46d1e4fc3a70e5138a5bd4b3fb182b6746d00c69fd5cf8822c0c90c2bcb4d8276db0cecac16ea0198e18a44e755a340495b19cc2238

Download Submit
memory/64-95-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/64-93-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/1008-53-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/1008-40-0x0000023DE3680000-0x0000023DE3690000-memory.dmp

Filesize
64KB

Download
memory/1008-41-0x0000023DE3680000-0x0000023DE3690000-memory.dmp

Filesize
64KB

Download
memory/1008-39-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/1636-68-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/1636-66-0x0000024AF53F0000-0x0000024AF5400000-memory.dmp

Filesize
64KB

Download
memory/1636-65-0x0000024AF53F0000-0x0000024AF5400000-memory.dmp

Filesize
64KB

Download
memory/1636-64-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/1740-76-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/1740-6-0x000000001ACB0000-0x000000001ACC0000-memory.dmp

Filesize
64KB

Download
memory/1740-4-0x0000000000040000-0x0000000000078000-memory.dmp

Filesize
224KB

Download
memory/1740-77-0x000000001ACB0000-0x000000001ACC0000-memory.dmp

Filesize
64KB

Download
memory/1740-5-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/1856-16-0x0000021729430000-0x0000021729452000-memory.dmp

Filesize
136KB

Download
memory/1856-8-0x0000021741910000-0x0000021741920000-memory.dmp

Filesize
64KB

Download
memory/1856-9-0x0000021741910000-0x0000021741920000-memory.dmp

Filesize
64KB

Download
memory/1856-7-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/1856-22-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/3596-100-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/3596-99-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/3824-88-0x000001C7D04E0000-0x000001C7D04E1000-memory.dmp

Filesize
4KB

Download
memory/3824-78-0x000001C7D04E0000-0x000001C7D04E1000-memory.dmp

Filesize
4KB

Download
memory/3824-84-0x000001C7D04E0000-0x000001C7D04E1000-memory.dmp

Filesize
4KB

Download
memory/3824-85-0x000001C7D04E0000-0x000001C7D04E1000-memory.dmp

Filesize
4KB

Download
memory/3824-87-0x000001C7D04E0000-0x000001C7D04E1000-memory.dmp

Filesize
4KB

Download
memory/3824-86-0x000001C7D04E0000-0x000001C7D04E1000-memory.dmp

Filesize
4KB

Download
memory/3824-89-0x000001C7D04E0000-0x000001C7D04E1000-memory.dmp

Filesize
4KB

Download
memory/3824-80-0x000001C7D04E0000-0x000001C7D04E1000-memory.dmp

Filesize
4KB

Download
memory/3824-90-0x000001C7D04E0000-0x000001C7D04E1000-memory.dmp

Filesize
4KB

Download
memory/3824-79-0x000001C7D04E0000-0x000001C7D04E1000-memory.dmp

Filesize
4KB

Download
memory/4180-38-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/4180-24-0x00007FF853D50000-0x00007FF854811000-memory.dmp

Filesize
10.8MB

Download
memory/4180-25-0x000001317A8B0000-0x000001317A8C0000-memory.dmp

Filesize
64KB

Download
memory/4180-26-0x000001317A8B0000-0x000001317A8C0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads