xtremerat | 2a79b34582a8338b84952e2a989967f47310514b2aa185a814f76fd276001a2b

General

Target

b6d42934269f3d562d8c2cced6989844_JaffaCakes118.exe
Size

317KB
MD5

b6d42934269f3d562d8c2cced6989844
SHA1

154dcd94848e0ebcbe2371e504663376968b90e7
SHA256

2a79b34582a8338b84952e2a989967f47310514b2aa185a814f76fd276001a2b
SHA512

edd33864945699765f5fbfaab60c419c235a3f2ecb26f38311350e16a8d06ef7c88ad4f819e961e8682d6141d711abd3645174f9a9b5f947e982e1aed0cca9b2
SSDEEP

6144:ElZ/zUMu4pDSxsCMRzf7x3SfS1JAzXBtL76lLIaluwkEgR:EHLUMuiv9RgfSjAzRtyVIFEgR

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/3964-13-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3964-16-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4172-17-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4172-20-0x0000000010000000-0x000000001004D000-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

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\{J8ME8N2F-KD07-4M4Y-07Y6-551AK7L82KWJ}	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{J8ME8N2F-KD07-4M4Y-07Y6-551AK7L82KWJ}\StubPath = "C:\\Program Files (x86)\\windows\\real.exe restart"	server.exe

Executes dropped EXE 1 IoCs

pid	Process
4172	server.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:\\Program Files (x86)\\windows\\real.exe"	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Program Files (x86)\\windows\\real.exe"	server.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/2588-12-0x0000000000400000-0x00000000004B8000-memory.dmp	autoit_exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2588-0-0x0000000000400000-0x00000000004B8000-memory.dmp	upx
behavioral2/files/0x000c000000023b84-5.dat	upx
behavioral2/memory/2588-12-0x0000000000400000-0x00000000004B8000-memory.dmp	upx
behavioral2/memory/4172-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3964-13-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3964-16-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4172-17-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4172-20-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\windows\real.exe	server.exe
File created	C:\Program Files (x86)\windows\real.exe	server.exe
File opened for modification	C:\Program Files (x86)\windows\	server.exe

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
2088	3964	WerFault.exe	84
2044	3964	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 3 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	b6d42934269f3d562d8c2cced6989844_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4172	server.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2588 wrote to memory of 4172	2588	b6d42934269f3d562d8c2cced6989844_JaffaCakes118.exe	83
PID 2588 wrote to memory of 4172	2588	b6d42934269f3d562d8c2cced6989844_JaffaCakes118.exe	83
PID 2588 wrote to memory of 4172	2588	b6d42934269f3d562d8c2cced6989844_JaffaCakes118.exe	83
PID 4172 wrote to memory of 3964	4172	server.exe	84
PID 4172 wrote to memory of 3964	4172	server.exe	84
PID 4172 wrote to memory of 3964	4172	server.exe	84
PID 4172 wrote to memory of 3964	4172	server.exe	84

C:\Users\Admin\AppData\Local\Temp\b6d42934269f3d562d8c2cced6989844_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b6d42934269f3d562d8c2cced6989844_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2588
- C:\Users\Admin\AppData\Local\Temp\server.exe
  C:\Users\Admin\AppData\Local\Temp/server.exe
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4172
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3964
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3964 -s 484
      4⤵
      Program crash
      PID:2088
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3964 -s 492
      4⤵
      Program crash
      PID:2044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3964 -ip 3964
1⤵
PID:3128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3964 -ip 3964
1⤵
PID:3456

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

C:\Users\Admin\AppData\Local\Temp\aut74D2.tmp

Filesize
33KB

MD5
c2c85fc534a42d2f6d4123ad290880bb

SHA1
1e88963559c246ef5ffc9d3beae684973b4f46b3

SHA256
516fc21f20a8b317d2ec2b25f53d382a8e1095aebbed0b5be6906f55a135d15b

SHA512
ae46563f7823a08b980c4dfd52140afe493b2f8e2b1bf2408bf3ec9e182850db3d4e825b1eec325112653d374f6f56d6d25573bb5e30bd93786d37ada25e0478

Download Submit
memory/2588-0-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/2588-12-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3964-13-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3964-16-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4172-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4172-17-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4172-20-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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