xtremerat | 2fe90d9427c800ef20af4d2987c95b602a47a82ca42a39b9e9c8ea82f109054a

General

Target

JaffaCakes118_435b72cfbf939eb1f32f3d2f528e21c4.exe
Size

809KB
MD5

435b72cfbf939eb1f32f3d2f528e21c4
SHA1

f0320c280a25f03301586d1acd84edc9247d3da0
SHA256

2fe90d9427c800ef20af4d2987c95b602a47a82ca42a39b9e9c8ea82f109054a
SHA512

c726a5be311889f086091e2b622f66f6f6bf4a22ca0d8a57844ab1ae83ec0d964bbe8dbfae61b661aaf824ba0a6c120dae5ebf9cad7b85a376d908fe188abcaa
SSDEEP

12288:OuXdjyfHShflT8ZfMfHS3HHiL9QHB11hJ2BHjyDNT9Zs3Aym8Gm:OAyfHSMZU/siBKhJ2BHG9ZsQyme

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

mikropbisey.no-ip.biz

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/2584-24-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4564-26-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4564-27-0x0000000010000000-0x000000001004D000-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

Executes dropped EXE 3 IoCs

pid	Process
1752	TURKHA~1.EXE
780	system32.exe
2584	system32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	JaffaCakes118_435b72cfbf939eb1f32f3d2f528e21c4.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 780 set thread context of 2584	780	system32.exe	86

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2584-17-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2584-22-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2584-24-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4564-26-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4564-27-0x0000000010000000-0x000000001004D000-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

pid	pid_target	Process	procid_target
792	4564	WerFault.exe	87
4932	4564	WerFault.exe	87

System Location Discovery: System Language Discovery 1 TTPs 5 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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_435b72cfbf939eb1f32f3d2f528e21c4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TURKHA~1.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	system32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	system32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1752	TURKHA~1.EXE
780	system32.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 1752	3588	JaffaCakes118_435b72cfbf939eb1f32f3d2f528e21c4.exe	84
PID 3588 wrote to memory of 1752	3588	JaffaCakes118_435b72cfbf939eb1f32f3d2f528e21c4.exe	84
PID 3588 wrote to memory of 1752	3588	JaffaCakes118_435b72cfbf939eb1f32f3d2f528e21c4.exe	84
PID 3588 wrote to memory of 780	3588	JaffaCakes118_435b72cfbf939eb1f32f3d2f528e21c4.exe	85
PID 3588 wrote to memory of 780	3588	JaffaCakes118_435b72cfbf939eb1f32f3d2f528e21c4.exe	85
PID 3588 wrote to memory of 780	3588	JaffaCakes118_435b72cfbf939eb1f32f3d2f528e21c4.exe	85
PID 780 wrote to memory of 2584	780	system32.exe	86
PID 780 wrote to memory of 2584	780	system32.exe	86
PID 780 wrote to memory of 2584	780	system32.exe	86
PID 780 wrote to memory of 2584	780	system32.exe	86
PID 780 wrote to memory of 2584	780	system32.exe	86
PID 780 wrote to memory of 2584	780	system32.exe	86
PID 780 wrote to memory of 2584	780	system32.exe	86
PID 780 wrote to memory of 2584	780	system32.exe	86
PID 2584 wrote to memory of 4564	2584	system32.exe	87
PID 2584 wrote to memory of 4564	2584	system32.exe	87
PID 2584 wrote to memory of 4564	2584	system32.exe	87
PID 2584 wrote to memory of 4564	2584	system32.exe	87
PID 2584 wrote to memory of 1672	2584	system32.exe	88
PID 2584 wrote to memory of 1672	2584	system32.exe	88
PID 2584 wrote to memory of 1672	2584	system32.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_435b72cfbf939eb1f32f3d2f528e21c4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_435b72cfbf939eb1f32f3d2f528e21c4.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\TURKHA~1.EXE
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\TURKHA~1.EXE
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1752
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\system32.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\system32.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:780
- - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\system32.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2584
  - - C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      4⤵
      System Location Discovery: System Language Discovery
      PID:4564
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4564 -s 504
        5⤵
        Program crash
        
        PID:792
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4564 -s 512
        5⤵
        Program crash
        
        PID:4932
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
      4⤵
      PID:1672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4564 -ip 4564
1⤵
PID:1584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4564 -ip 4564
1⤵
PID:3936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\TURKHA~1.EXE

Filesize
592KB

MD5
644c285f2b6201f213f4965d47569733

SHA1
6fef57d8beb24c5c601d6fb64cbd4a692b0461ac

SHA256
c37c408ff6bf45957ad8feafcffb36ef6c676756cbf24153f72d9c503d2ad63a

SHA512
14022d3be8c6083401332d51c348b1c7675162f98f8db0abcb2553cb8c4d657b8f67ac18c6f3011bddd5d74943b9df692ae70a5de7dffa6f2eabca26de0f4d50

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\system32.exe

Filesize
389KB

MD5
53d7993497873f49cf664b3b8e2dbfcc

SHA1
e470b1c09ac77214bb70c7852ab8f254ee4ac27d

SHA256
95e923e9d29f4748efb479e142469d3468290d2e0ea77e3cce84afd22bd7b17f

SHA512
50102ddcd36d5482b88a75daf29034f222c97f5227675f51eda619b70fae5f68100300ccbca8c35410ae576c5a756ec7173227f093a38ead7b9cfd155fbbdfbe

Download Submit
memory/780-12-0x000000000054E000-0x000000000054F000-memory.dmp

Filesize
4KB

Download
memory/780-13-0x0000000000400000-0x0000000000550000-memory.dmp

Filesize
1.3MB

Download
memory/780-16-0x0000000000400000-0x0000000000550000-memory.dmp

Filesize
1.3MB

Download
memory/780-21-0x0000000000400000-0x0000000000550000-memory.dmp

Filesize
1.3MB

Download
memory/2584-17-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2584-22-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2584-24-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2584-25-0x0000000000400000-0x0000000000550000-memory.dmp

Filesize
1.3MB

Download
memory/4564-26-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4564-27-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads