xtremerat | a1e54b743426f32cf96dcb45aa6becb44fc7de9f9b73154cf9188335abfd1e20

General

Target

7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe
Size

67KB
MD5

7a917fd27a6e574cc4d722049e2e47f1
SHA1

586d1e930193e58ecf80277a5fad52d5b0ad24f3
SHA256

a1e54b743426f32cf96dcb45aa6becb44fc7de9f9b73154cf9188335abfd1e20
SHA512

12e580195a311a13d5cf04964d06e78935660208e4a2bf67d9cb055c0161e9d6ab541d5e373c0d24d91030a6a118037f38671dbf1b14b10dd091b8c4b1dfb9a1
SSDEEP

768:G8m1Sq4NQErBsH1tzoisBKQI6dObAG/dq7uW29Ifnca/yyR+P2ujfGiCKPA+7XoJ:0sq+QV4rObAdCWpf/y+QozNwi6o1ZD

Score

10^/10

xtremerat discovery persistence rat spyware

Malware Config

Extracted

Family

xtremerat

C2

silent-hilll.no-ip.biz

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral1/memory/2704-2-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral1/files/0x0007000000016cc8-7.dat	family_xtremerat
behavioral1/memory/2664-8-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral1/memory/2704-9-0x0000000010000000-0x000000001004A000-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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Windows\\system32\\msn\\msn.exe"	svchost.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Windows\\system32\\msn\\msn.exe restart"	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	svchost.exe

Adds Run key to start application 2 TTPs 4 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\\system32\\msn\\msn.exe"	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\msn\\msn.exe"	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\msn\\msn.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\msn\\msn.exe"	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\msn\msn.exe	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\msn\msn.exe	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\182erreur.txt.txt.exe	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe
File created	C:\Windows\182erreur.txt.txt	7a917fd27a6e574cc4d722049e2e47f1_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	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NOTEPAD.EXE

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2824	NOTEPAD.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2664	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 2704	2664	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe	31
PID 2664 wrote to memory of 2704	2664	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe	31
PID 2664 wrote to memory of 2704	2664	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe	31
PID 2664 wrote to memory of 2704	2664	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe	31
PID 2664 wrote to memory of 2704	2664	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe	31
PID 2664 wrote to memory of 2824	2664	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe	32
PID 2664 wrote to memory of 2824	2664	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe	32
PID 2664 wrote to memory of 2824	2664	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe	32
PID 2664 wrote to memory of 2824	2664	7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7a917fd27a6e574cc4d722049e2e47f1_JaffaCakes118.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2664
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:2704
- C:\Windows\SysWOW64\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Windows\182erreur.txt.txt
  2⤵
  - System Location Discovery: System Language Discovery
  - Opens file in notepad (likely ransom note)
  PID:2824

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:\Windows\182erreur.txt.txt

Filesize
32B

MD5
607cfd66d4ba80bec5ddaa6a3f7312da

SHA1
df0a8f6e7a3c9db38e5ecf1fc3569cf833852b9f

SHA256
838f38b7c1ffe015d200affbefad6f4bd0440db576c14b1ce66b7a58a011d221

SHA512
22de106b628043a73ffddfabe973bb4504f0e97714d316e2ea86c2e70c2d5a67dc7bf650e0fdffbc7fa77c94c6a9934a3e2702abb97767e96519805637b44670

Download Submit
C:\Windows\SysWOW64\msn\msn.exe

Filesize
67KB

MD5
7a917fd27a6e574cc4d722049e2e47f1

SHA1
586d1e930193e58ecf80277a5fad52d5b0ad24f3

SHA256
a1e54b743426f32cf96dcb45aa6becb44fc7de9f9b73154cf9188335abfd1e20

SHA512
12e580195a311a13d5cf04964d06e78935660208e4a2bf67d9cb055c0161e9d6ab541d5e373c0d24d91030a6a118037f38671dbf1b14b10dd091b8c4b1dfb9a1

Download Submit
memory/2664-8-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/2704-0-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/2704-2-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/2704-9-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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