xtremerat | 3359ebdee5962621391361cf2bdc2906b410e79dfc34dd64ba9b1a10b0ef4b8f

General

Target

37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe
Size

301KB
MD5

37b13059d29d1d237237c7e39994bd28
SHA1

1ccebb230a943dbca2eda6d9ac3a83fa27b54bc4
SHA256

3359ebdee5962621391361cf2bdc2906b410e79dfc34dd64ba9b1a10b0ef4b8f
SHA512

1b6f8cf0a2a9008ee2021f32f85df638f27465e0c83e51d5238948eb75bdebc6695f6e64b66a2b9bf6fb3d95d69678249a86e64b98a2a3736c73dd6d973839df
SSDEEP

768:Q8m1Sq4NQErBsH1tzoisBKQI6dObAG/dq8uW29Ifnca/yyR+P2ujfGiiXzoigXY8:Ssq+QV4rObAdXWpf/y+3oqodoox

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

deadslayerx7.no-ip.org

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/2408-0-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3244-1-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3244-4-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2408-5-0x0000000010000000-0x000000001004D000-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

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\{42UC8HW6-K6U4-V010-YPLD-F6M807DR52RK}	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{42UC8HW6-K6U4-V010-YPLD-F6M807DR52RK}\StubPath = "C:\\Windows\\system32\\Microsoft\\MicrosoftUpdate.exe restart"	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 3 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\RealtekSound = "C:\\Windows\\system32\\Microsoft\\MicrosoftUpdate.exe"	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RealtekSound = "C:\\Windows\\system32\\Microsoft\\MicrosoftUpdate.exe"	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\Microsoft\\MicrosoftUpdate.exe"	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Microsoft\MicrosoftUpdate.exe	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\Microsoft\MicrosoftUpdate.exe	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\Microsoft\	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2408-0-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3244-1-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3244-4-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2408-5-0x0000000010000000-0x000000001004D000-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
4928	3244	WerFault.exe	88
3848	3244	WerFault.exe	88

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	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2408	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 3244	2408	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe	88
PID 2408 wrote to memory of 3244	2408	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe	88
PID 2408 wrote to memory of 3244	2408	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe	88
PID 2408 wrote to memory of 3244	2408	37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\37b13059d29d1d237237c7e39994bd28_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\37b13059d29d1d237237c7e39994bd28_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 SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3244
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3244 -s 480
    3⤵
    - Program crash
    PID:4928
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3244 -s 488
    3⤵
    - Program crash
    PID:3848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3244 -ip 3244
1⤵
PID:1720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 3244 -ip 3244
1⤵
PID:2748

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/2408-0-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2408-5-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3244-1-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3244-4-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads