xtremerat | 6a22714c77a9567aa280a90a9b212db198b3eac20fbdd8573f2411e66eb87264

General

Target

96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe
Size

327KB
MD5

96f932e3cc5fd67994c43e3dad93351b
SHA1

36e81ea5561e642700cfa4974556d05e0b181b58
SHA256

6a22714c77a9567aa280a90a9b212db198b3eac20fbdd8573f2411e66eb87264
SHA512

a842e0e06c63548ac77e299c1f62807577662fce6097148d1e07f0b81dfd3c64836534e407fe998f945ab7effae9f9117fb431235b0eb16a773156e2a2025eab
SSDEEP

3072:Sffbulo9s/4K/GoSu/LC/oTvMJDAOd5V1iAXo7TtOQmK6NVyDAxEWxLe4uTHG+o4:9OwvgaAxEWH+VKyERToWyNW7mvItk

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

ksk35.no-ip.org

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/1008-20-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1008-24-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2828-25-0x0000000010000000-0x000000001004D000-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\{QXK3YM6K-5UY7-3A2L-T6C3-BPE60S4PU3L5}	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{QXK3YM6K-5UY7-3A2L-T6C3-BPE60S4PU3L5}\StubPath = "C:\\Windows\\InstallDir\\svchost.exe restart"	server.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2828	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:\\Windows\\InstallDir\\svchost.exe"	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\svchost.exe"	server.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1596 set thread context of 2592	1596	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	82

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0007000000023cb2-13.dat	upx
behavioral2/memory/2828-17-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1008-20-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1008-24-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2828-25-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\InstallDir\svchost.exe	server.exe
File opened for modification	C:\Windows\InstallDir\	server.exe
File opened for modification	C:\Windows\InstallDir\svchost.exe	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
1612	1008	WerFault.exe	84
2000	1008	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 4 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	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	96f932e3cc5fd67994c43e3dad93351b_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 3 IoCs

pid	Process
1596	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe
2592	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe
2828	server.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 2592	1596	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	82
PID 1596 wrote to memory of 2592	1596	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	82
PID 1596 wrote to memory of 2592	1596	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	82
PID 1596 wrote to memory of 2592	1596	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	82
PID 1596 wrote to memory of 2592	1596	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	82
PID 1596 wrote to memory of 2592	1596	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	82
PID 1596 wrote to memory of 2592	1596	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	82
PID 1596 wrote to memory of 2592	1596	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	82
PID 2592 wrote to memory of 2828	2592	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	83
PID 2592 wrote to memory of 2828	2592	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	83
PID 2592 wrote to memory of 2828	2592	96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe	83
PID 2828 wrote to memory of 1008	2828	server.exe	84
PID 2828 wrote to memory of 1008	2828	server.exe	84
PID 2828 wrote to memory of 1008	2828	server.exe	84
PID 2828 wrote to memory of 1008	2828	server.exe	84

C:\Users\Admin\AppData\Local\Temp\96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Users\Admin\AppData\Local\Temp\96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\96f932e3cc5fd67994c43e3dad93351b_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2592
- - C:\Users\Admin\AppData\Local\Temp\server.exe
    "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Boot or Logon Autostart Execution: Active Setup
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2828
  - - C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      4⤵
      System Location Discovery: System Language Discovery
      PID:1008
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1008 -s 340
        5⤵
        Program crash
        
        PID:1612
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1008 -s 488
        5⤵
        Program crash
        
        PID:2000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1008 -ip 1008
1⤵
PID:2492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1008 -ip 1008
1⤵
PID:1264

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

Query Registry

1

T1012

System Information Discovery

2

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\server.exe

Filesize
33KB

MD5
6f097ff8ff5eb9b2d045432fc551024e

SHA1
58e35489f37b74f3064c380b897c8167fc053671

SHA256
9c570e4b1304c569b355f6317e6475955b9e059e97efea417d67f59deb4cfa92

SHA512
34a10a3ca13063ebf73552f2f726b4faa49917fa5eeda36fb13ad800d0d4d604848d599762bd9b5239d5227356f7d266b0ccffb0659ee1536f4fb677e8570e3b

Download Submit
memory/1008-20-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1008-24-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2592-5-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2592-3-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2592-18-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2828-17-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2828-25-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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