xtremerat | 51a99ba9672c9be5b7da59bc033b12726d70460d5f9ff7c8c599db73c17d6f8a

General

Target

JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe
Size

122KB
MD5

39d801f58ce55e868801333e3dacce6d
SHA1

ba1cd7fe13b6413b3d6df00392727cad81fdb058
SHA256

51a99ba9672c9be5b7da59bc033b12726d70460d5f9ff7c8c599db73c17d6f8a
SHA512

44bc77acd925500cbab39e6dd073cdf1ce5ef5c054da57a8f6d822fd50c6a7eaf2f71afaf99340246e080c7262e10de6d581727701c39fef5aae3d20807f78cf
SSDEEP

3072:piBiyJ+MgpIOszYpew6bI/5hoqNz2OUKCXoA2n+Hx/do:GiysMq+Yt6K5KNzokR

Score

10^/10

xtremerat defense_evasion discovery persistence rat spyware

Malware Config

Signatures

Detect XtremeRAT payload 1 IoCs

resource	yara_rule
behavioral2/memory/1064-5-0x0000000000C80000-0x0000000000C92000-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
Disables Task Manager via registry modification
defense_evasion
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1ycpoFJLDcrjUCE = "C:\\Users\\Admin\\AppData\\Roaming\\JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe"	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Svchost = "C:\\Users\\Admin\\AppData\\Local\\Temp\\JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe"	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2160 set thread context of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4972	1064	WerFault.exe	84

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	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	REG.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
4580	REG.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 4580	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	82
PID 2160 wrote to memory of 4580	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	82
PID 2160 wrote to memory of 4580	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	82
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84
PID 2160 wrote to memory of 1064	2160	JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe	84

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39d801f58ce55e868801333e3dacce6d.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Windows\SysWOW64\REG.exe
  REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry key
  PID:4580
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  PID:1064
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1064 -s 12
    3⤵
    - Program crash
    PID:4972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1064 -ip 1064
1⤵
PID:1508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

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/1064-5-0x0000000000C80000-0x0000000000C92000-memory.dmp

Filesize
72KB

Download
memory/2160-0-0x00000000750E2000-0x00000000750E3000-memory.dmp

Filesize
4KB

Download
memory/2160-1-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/2160-2-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download
memory/2160-7-0x00000000750E0000-0x0000000075691000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads