xtremerat | 06d309860576546e54315dc5d8d36410ae0355fef600d7af1b2f6aeb8f198682

General

Target

JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe
Size

226KB
MD5

a8f27f786cd4cf5e1dfb3817478f23b6
SHA1

97c0c92f9f394332386b93c2d93d0e7c5adef0af
SHA256

06d309860576546e54315dc5d8d36410ae0355fef600d7af1b2f6aeb8f198682
SHA512

1f07d6266b1ac8dcf7fbdb1b2498225c460d5b29f622f1cf5be42b262dffa8e773ebc15f78e2b18037a87c7850a80e8dddf44ebff9527c1c4ad0526f2365effb
SSDEEP

3072:jZkRi4rd9GTXuI7E9n6nUaiUdLA34OS7lRT2k7jGliNuOegNKeTy3hFijXMlJE:jWRTjySnqUai1o7+0Gl21VTymjXMlJE

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral1/memory/4048-4-0x0000000000C80000-0x0000000000D06000-memory.dmp	family_xtremerat
behavioral1/memory/4748-6-0x0000000000C80000-0x0000000000D06000-memory.dmp	family_xtremerat
behavioral1/memory/4048-8-0x0000000000C80000-0x0000000000D06000-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

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Windows\\InstallDir\\Server.exe restart"	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe

Adds Run key to start application 2 TTPs 2 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\Run\HKLM = "C:\\Windows\\InstallDir\\Server.exe"	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-805952410-2104024357-1716932545-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Server.exe"	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/4748-0-0x0000000000C80000-0x0000000000D06000-memory.dmp	upx
behavioral1/memory/4048-4-0x0000000000C80000-0x0000000000D06000-memory.dmp	upx
behavioral1/memory/4748-6-0x0000000000C80000-0x0000000000D06000-memory.dmp	upx
behavioral1/memory/4048-8-0x0000000000C80000-0x0000000000D06000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\InstallDir\Server.exe	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe
File opened for modification	C:\Windows\InstallDir\Server.exe	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.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	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4048	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4748 wrote to memory of 2472	4748	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe	88
PID 4748 wrote to memory of 2472	4748	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe	88
PID 4748 wrote to memory of 4048	4748	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe	89
PID 4748 wrote to memory of 4048	4748	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe	89
PID 4748 wrote to memory of 4048	4748	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe	89
PID 4748 wrote to memory of 4048	4748	JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8f27f786cd4cf5e1dfb3817478f23b6.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4748
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
  2⤵
  PID:2472
- C:\Windows\SysWOW64\explorer.exe
  explorer.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4048

Network

MITRE ATT&CK Enterprise v16

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/4048-4-0x0000000000C80000-0x0000000000D06000-memory.dmp

Filesize
536KB

Download
memory/4048-5-0x00007FFC0C250000-0x00007FFC0C445000-memory.dmp

Filesize
2.0MB

Download
memory/4048-8-0x0000000000C80000-0x0000000000D06000-memory.dmp

Filesize
536KB

Download
memory/4048-9-0x00007FFC0C250000-0x00007FFC0C445000-memory.dmp

Filesize
2.0MB

Download
memory/4748-0-0x0000000000C80000-0x0000000000D06000-memory.dmp

Filesize
536KB

Download
memory/4748-6-0x0000000000C80000-0x0000000000D06000-memory.dmp

Filesize
536KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads