xtremerat | fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9

General

Target

fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe
Size

386KB
MD5

6de938a7158ae94c22f565ebd140eb10
SHA1

74402a8ad6a892e6e0beca567ad600c4fdb7a416
SHA256

fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9
SHA512

7d94468fcf3ad66a1f0b836eae13363ff318ef8048e48f3b526fac09e672edf99127bc254e9d703c8f4747834228eee6898612c9362929f89690543e36edda1c
SSDEEP

12288:AxFgQMRLeUfKUa0+AsFkaqLTn3YBy5aeT:IEfK/O9TnfgeT

Score

10^/10

xtremerat discovery persistence rat spyware

Malware Config

Signatures

Detect XtremeRAT payload 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023c81-27.dat	family_xtremerat

XtremeRAT
The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.
persistence spyware rat xtremerat
Xtremerat family
xtremerat

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3656 set thread context of 1552	3656	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe	82

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe
File created	C:\Windows\assembly\Desktop.ini	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe

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 2 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	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3656	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3656 wrote to memory of 1552	3656	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe	82
PID 3656 wrote to memory of 1552	3656	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe	82
PID 3656 wrote to memory of 1552	3656	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe	82
PID 3656 wrote to memory of 1552	3656	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe	82
PID 3656 wrote to memory of 1552	3656	fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe	82

C:\Users\Admin\AppData\Local\Temp\fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe
"C:\Users\Admin\AppData\Local\Temp\fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe"
1⤵
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3656
- C:\Users\Admin\AppData\Local\Temp\fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe
  C:\Users\Admin\AppData\Local\Temp\fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  PID:1552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\fc0cdbaf1a621057518fcc82b9b4acf0a9211917813148ad86932ee454cf4bd9N.exe.log

Filesize
312B

MD5
d4b49ac61a6cac139f96450777c10204

SHA1
92089d33442c9e2eaceac3ed8db6a7168f938e5a

SHA256
807bdfa62a4312030c1ed54981674cff77f6108e6b4957754cabb810098ce082

SHA512
eb13a0e7f0d4b44db7e8d0625ba1ee6a036083c39c24b85493d3ec9074ada03eb7003b97bd92ed5f2baaf26295a4690303332593c4776e75da5bc3b6adbc3ea6

Download Submit
C:\Users\Admin\AppData\Roaming\3dcle2155DC.exe

Filesize
65KB

MD5
84bf38ddc84b2e4956abb42f30a5d458

SHA1
0634173673b40782e6665e25d7cb468cabaed641

SHA256
847edacfe831a6d958d366efabd6b9daca7e2b458d29aa631ad778663623f0ad

SHA512
2f8f170371c629625323191ac08c41735cdec5eb1c215d16a5c0ad81314a14d2cf7095083463df699035e57d45f70e31b333c96f9fa30251645cbc1aa5e23afc

Download Submit
memory/1552-16-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1552-23-0x0000000074BA0000-0x0000000075151000-memory.dmp

Filesize
5.7MB

Download
memory/1552-31-0x0000000074BA0000-0x0000000075151000-memory.dmp

Filesize
5.7MB

Download
memory/3656-0-0x0000000074BA2000-0x0000000074BA3000-memory.dmp

Filesize
4KB

Download
memory/3656-1-0x0000000074BA0000-0x0000000075151000-memory.dmp

Filesize
5.7MB

Download
memory/3656-2-0x0000000074BA0000-0x0000000075151000-memory.dmp

Filesize
5.7MB

Download
memory/3656-19-0x0000000074BA0000-0x0000000075151000-memory.dmp

Filesize
5.7MB

Download
memory/3656-22-0x0000000074BA0000-0x0000000075151000-memory.dmp

Filesize
5.7MB

Download
memory/3656-21-0x0000000074BA0000-0x0000000075151000-memory.dmp

Filesize
5.7MB

Download

Analysis

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