xtremerat | 48cfbdeb4600dfd22582198b12d32538385f7a4f361281161892ff0ae2f9ccaf

General

Target

dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe
Size

269KB
MD5

dc5362b9b39cf550b34c1272fe15b355
SHA1

6c60bda81bd19686165f8c2070e6e8e1a32948d5
SHA256

48cfbdeb4600dfd22582198b12d32538385f7a4f361281161892ff0ae2f9ccaf
SHA512

f45ba811f2c9072d7b54ace3bbc26295d72ba10c639e3dcc9ef986761caad660933d0bba8c24fcc3c9fb7f67901ce284a38daec4d84249fe22bef6a23a29e0ff
SSDEEP

3072:G/v7xIj0jsCpbqpu+IDzyyJRCvxe1ddRa53apZF8a4EvsagMGh0HDF++4B5hiSnu:MdJjrpRqrXaJ/15++shXhGTNKq8dR3Ra

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

somee.no-ip.biz

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/2640-28-0x0000000000C80000-0x0000000000CE1000-memory.dmp	family_xtremerat
behavioral2/memory/1188-30-0x0000000000C80000-0x0000000000CE1000-memory.dmp	family_xtremerat
behavioral2/memory/3992-31-0x0000000000C80000-0x0000000000CE1000-memory.dmp	family_xtremerat
behavioral2/memory/1188-33-0x0000000000C80000-0x0000000000CE1000-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 4 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\{1B3H462O-2D4U-1FBK-5IM1-QWQ763MI2XG1}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1B3H462O-2D4U-1FBK-5IM1-QWQ763MI2XG1}\StubPath = "C:\\Windows\\system32\\InstallDir\\Server.exe restart"	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{1B3H462O-2D4U-1FBK-5IM1-QWQ763MI2XG1}	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{1B3H462O-2D4U-1FBK-5IM1-QWQ763MI2XG1}\StubPath = "C:\\Windows\\system32\\InstallDir\\Server.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3992	server.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\InstallDir\Server.exe	server.exe
File created	C:\Windows\SysWOW64\InstallDir\Server.exe	server.exe
File opened for modification	C:\Windows\SysWOW64\InstallDir\	server.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0007000000023cc0-17.dat	upx
behavioral2/memory/3992-20-0x0000000000C80000-0x0000000000CE1000-memory.dmp	upx
behavioral2/memory/2640-28-0x0000000000C80000-0x0000000000CE1000-memory.dmp	upx
behavioral2/memory/1188-30-0x0000000000C80000-0x0000000000CE1000-memory.dmp	upx
behavioral2/memory/3992-31-0x0000000000C80000-0x0000000000CE1000-memory.dmp	upx
behavioral2/memory/1188-33-0x0000000000C80000-0x0000000000CE1000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe
File created	C:\Windows\assembly\Desktop.ini	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	dc5362b9b39cf550b34c1272fe15b355_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 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	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4064	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe
Token: 33	4064	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4064	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe
Token: 33	4064	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4064	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe
Token: 33	4064	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4064	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1188	explorer.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4064 wrote to memory of 3992	4064	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe	85
PID 4064 wrote to memory of 3992	4064	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe	85
PID 4064 wrote to memory of 3992	4064	dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe	85
PID 3992 wrote to memory of 2640	3992	server.exe	86
PID 3992 wrote to memory of 2640	3992	server.exe	86
PID 3992 wrote to memory of 2640	3992	server.exe	86
PID 3992 wrote to memory of 2640	3992	server.exe	86
PID 3992 wrote to memory of 1188	3992	server.exe	87
PID 3992 wrote to memory of 1188	3992	server.exe	87
PID 3992 wrote to memory of 1188	3992	server.exe	87
PID 3992 wrote to memory of 1188	3992	server.exe	87

C:\Users\Admin\AppData\Local\Temp\dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dc5362b9b39cf550b34c1272fe15b355_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4064
- 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
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3992
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - Boot or Logon Autostart Execution: Active Setup
    - System Location Discovery: System Language Discovery
    PID:2640
- - C:\Windows\SysWOW64\explorer.exe
    explorer.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:1188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Active Setup

1

T1547.014

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Active Setup

1

T1547.014

Defense Evasion

Modify Registry

1

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
165KB

MD5
a51f1b4db4bdd656d0c31bc77f1e9a79

SHA1
f2a3e3f725a985d7d24b66bed17cb37f3c05105c

SHA256
37bb3e1193f4684934a8cf62a68ffde17d044e5f6af3c2f7d6370f7e48b50a6d

SHA512
8fb4ae8042a887dadb9b7a07b50e61735a75447896c24d28aaa5f811680f4db517ee606d1b1899a00c8a57104ba2ada09666cad9814abb4384ca5b22a424aaae

Download Submit
memory/1188-33-0x0000000000C80000-0x0000000000CE1000-memory.dmp

Filesize
388KB

Download
memory/1188-30-0x0000000000C80000-0x0000000000CE1000-memory.dmp

Filesize
388KB

Download
memory/2640-28-0x0000000000C80000-0x0000000000CE1000-memory.dmp

Filesize
388KB

Download
memory/3992-31-0x0000000000C80000-0x0000000000CE1000-memory.dmp

Filesize
388KB

Download
memory/3992-20-0x0000000000C80000-0x0000000000CE1000-memory.dmp

Filesize
388KB

Download
memory/4064-4-0x000000001B290000-0x000000001B29A000-memory.dmp

Filesize
40KB

Download
memory/4064-9-0x000000001C1D0000-0x000000001C26C000-memory.dmp

Filesize
624KB

Download
memory/4064-10-0x000000001B280000-0x000000001B288000-memory.dmp

Filesize
32KB

Download
memory/4064-11-0x000000001C460000-0x000000001C4AC000-memory.dmp

Filesize
304KB

Download
memory/4064-12-0x00007FF976340000-0x00007FF976CE1000-memory.dmp

Filesize
9.6MB

Download
memory/4064-8-0x000000001C010000-0x000000001C0B6000-memory.dmp

Filesize
664KB

Download
memory/4064-7-0x000000001BF50000-0x000000001BF60000-memory.dmp

Filesize
64KB

Download
memory/4064-0-0x00007FF9765F5000-0x00007FF9765F6000-memory.dmp

Filesize
4KB

Download
memory/4064-3-0x00007FF976340000-0x00007FF976CE1000-memory.dmp

Filesize
9.6MB

Download
memory/4064-2-0x000000001B8C0000-0x000000001BD8E000-memory.dmp

Filesize
4.8MB

Download
memory/4064-1-0x00007FF976340000-0x00007FF976CE1000-memory.dmp

Filesize
9.6MB

Download
memory/4064-34-0x00007FF9765F5000-0x00007FF9765F6000-memory.dmp

Filesize
4KB

Download
memory/4064-35-0x00007FF976340000-0x00007FF976CE1000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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