xtremerat | 842560b9bcbcc596a957d582fbb7b13568357b9affc1722ff2956220cf3286fb

General

Target

87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe
Size

21KB
MD5

87e0378f605590edfc05e5ad45debb27
SHA1

741d65456e600e82ec2cc1f3f9d3d35bfae73ae1
SHA256

842560b9bcbcc596a957d582fbb7b13568357b9affc1722ff2956220cf3286fb
SHA512

c6eb12328e4ef91e6413b43f9a151cc6ee3ae7f74d71be4c79efa06a8ed394d47624cf4127abfabba3baec75edb5ed039f7ce024b95132d5e8fc35a8ed0844c7
SSDEEP

384:oHkbvZrowDq6mpVIRTMT6rk9H0UNCm0iY07P8abfNFR:FcwDVmjWMuruUUNEO7PpbVb

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral1/memory/2504-6-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral1/memory/656-7-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral1/memory/2504-9-0x0000000000C80000-0x0000000000C95000-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

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\{34U3Y3NN-EWP8-Y5DQ-A3I5-71FD1N5235A6}	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{34U3Y3NN-EWP8-Y5DQ-A3I5-71FD1N5235A6}\StubPath = "C:\\Windows\\system32\\Update\\main.exe restart"	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/656-0-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/2504-6-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/656-7-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/2504-9-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx

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\b = "C:\\Windows\\system32\\Update\\main.exe"	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Run\k = "C:\\Windows\\system32\\Update\\main.exe"	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Update\main.exe	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\Update\main.exe	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.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	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	calc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2504	calc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 656 wrote to memory of 2504	656	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe	29
PID 656 wrote to memory of 2504	656	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe	29
PID 656 wrote to memory of 2504	656	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe	29
PID 656 wrote to memory of 2504	656	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe	29
PID 656 wrote to memory of 2504	656	87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe	29

C:\Users\Admin\AppData\Local\Temp\87e0378f605590edfc05e5ad45debb27_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\87e0378f605590edfc05e5ad45debb27_JaffaCakes118.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 WriteProcessMemory
PID:656
- C:\Windows\SysWOW64\calc.exe
  calc.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2504

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/656-0-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/656-7-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2504-4-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2504-6-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2504-9-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads