xtremerat | d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09d

General

Target

d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe
Size

558KB
MD5

79d66c39499e6a27eb6bb9b0d582fe10
SHA1

cda81ab863391dad9cdd5cf2e254afc1775f3ea0
SHA256

d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09d
SHA512

de4b98ba7170dd2755c37d07de3006186bafc0b72e07ec89d8705c4558b984c68b8e13a618b0f322c0918f028d31b3e907abec3de61043ae98c62af7c7985a5f
SSDEEP

6144:OwW8yO1I3FODqRQ290R0++gQaCJFF8DipytmjRXI1ODsGT0D5q+LtlmzyupgOwKE:pyZ3FZG++pDvtSsg01vazrpgO

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

dominiocrossfire.duckdns.org

Signatures

Detect XtremeRAT payload 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2216-1-0x0000000010000000-0x000000001016B000-memory.dmp	family_xtremerat
behavioral2/memory/2216-4-0x0000000010000000-0x000000001016B000-memory.dmp	family_xtremerat
behavioral2/memory/2524-5-0x0000000010000000-0x000000001016B000-memory.dmp	family_xtremerat
behavioral2/memory/2524-16-0x0000000010000000-0x000000001016B000-memory.dmp	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

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

Processes:

d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{TDEE8C81-PC67-AWEH-NYH2-7815C83G3LA7}\StubPath = "C:\\Windows\\system32\\Windows\\taskhost.exe restart"	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{TDEE8C81-PC67-AWEH-NYH2-7815C83G3LA7}	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Windows\\system32\\Windows\\taskhost.exe"	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Windows\\system32\\Windows\\taskhost.exe"	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe

Drops file in System32 directory 3 IoCs

Processes:

d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Windows\	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe
File opened for modification	C:\Windows\SysWOW64\Windows\taskhost.exe	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe
File created	C:\Windows\SysWOW64\Windows\taskhost.exe	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/2524-0-0x0000000010000000-0x000000001016B000-memory.dmp	upx
behavioral2/memory/2216-1-0x0000000010000000-0x000000001016B000-memory.dmp	upx
behavioral2/memory/2216-4-0x0000000010000000-0x000000001016B000-memory.dmp	upx
behavioral2/memory/2524-5-0x0000000010000000-0x000000001016B000-memory.dmp	upx
behavioral2/memory/2524-16-0x0000000010000000-0x000000001016B000-memory.dmp	upx

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

System Information Discovery
T1082

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	Process	procid_target
1604	2216	WerFault.exe	82
376	2216	WerFault.exe	82

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

Processes:

d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exesvchost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe

pid	Process
2524	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe

description	pid	Process	procid_target
PID 2524 wrote to memory of 2216	2524	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe	82
PID 2524 wrote to memory of 2216	2524	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe	82
PID 2524 wrote to memory of 2216	2524	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe	82
PID 2524 wrote to memory of 2216	2524	d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe	82

C:\Users\Admin\AppData\Local\Temp\d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe
"C:\Users\Admin\AppData\Local\Temp\d71a155e2e1bd1448ad2c983a68e4966ddad58173b680eca44a3542dbba5a09dN.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2216
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2216 -s 484
    3⤵
    - Program crash
    PID:1604
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2216 -s 492
    3⤵
    - Program crash
    PID:376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2216 -ip 2216
1⤵
PID:4288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2216 -ip 2216
1⤵
PID:4608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2216-1-0x0000000010000000-0x000000001016B000-memory.dmp

Filesize
1.4MB

Download
memory/2216-4-0x0000000010000000-0x000000001016B000-memory.dmp

Filesize
1.4MB

Download
memory/2524-0-0x0000000010000000-0x000000001016B000-memory.dmp

Filesize
1.4MB

Download
memory/2524-5-0x0000000010000000-0x000000001016B000-memory.dmp

Filesize
1.4MB

Download
memory/2524-16-0x0000000010000000-0x000000001016B000-memory.dmp

Filesize
1.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads