xtremerat | 4e833a9595653d4c0a799e912f3d1310f24415f964a4e81302dcca75027aa0b8

General

Target

fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe
Size

33KB
MD5

fb7b3668db7296ff35e0b20bbd210ea6
SHA1

25cf3c76a2bcd1907dee6da48facbdd28ccf2149
SHA256

4e833a9595653d4c0a799e912f3d1310f24415f964a4e81302dcca75027aa0b8
SHA512

d302c8d1bd9ab31f0df79be29e54eaf8eba153410773ece98127222484db479a599bb726a86836766372d7106d8a7db9a85fccbe1ac5869ebd6596139794fe6f
SSDEEP

768:2MuijtHf5g7/IIG3bGcYDBSvFIWuePQtv66lRtz76O8Lh:jNW71rcYDAWeotvXlXiO

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

pho3nix.no-ip.biz

Signatures

Detect XtremeRAT payload 7 IoCs

resource	yara_rule
behavioral1/memory/2392-3-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/2952-7-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/2796-6-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/2796-11-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/2796-10-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/2392-13-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/2796-14-0x0000000010000000-0x000000001004D000-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 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\\assembly\\winrar.exe restart"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Windows\\system32\\assembly\\winrar.exe"	svchost.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	explorer.exe

Deletes itself 1 IoCs

pid	Process
2796	explorer.exe

Adds Run key to start application 2 TTPs 5 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\\assembly\\winrar.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\assembly\\winrar.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "winrar 5"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\assembly\\winrar.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\assembly\\winrar.exe"	svchost.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\assembly\winrar.exe	explorer.exe
File created	C:\Windows\SysWOW64\assembly\winrar.exe	explorer.exe
File opened for modification	C:\Windows\SysWOW64\assembly\	explorer.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2952-0-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2392-3-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2952-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2796-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2796-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2796-10-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/files/0x0007000000019490-12.dat	upx
behavioral1/memory/2392-13-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2796-14-0x0000000010000000-0x000000001004D000-memory.dmp	upx

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	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.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 SetWindowsHookEx 1 IoCs

pid	Process
2796	explorer.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 2392	2952	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	30
PID 2952 wrote to memory of 2392	2952	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	30
PID 2952 wrote to memory of 2392	2952	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	30
PID 2952 wrote to memory of 2392	2952	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	30
PID 2952 wrote to memory of 2392	2952	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	30
PID 2952 wrote to memory of 2796	2952	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	31
PID 2952 wrote to memory of 2796	2952	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	31
PID 2952 wrote to memory of 2796	2952	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	31
PID 2952 wrote to memory of 2796	2952	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	31
PID 2952 wrote to memory of 2796	2952	fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fb7b3668db7296ff35e0b20bbd210ea6_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2952
- 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:2392
- C:\Windows\SysWOW64\explorer.exe
  explorer.exe
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Deletes itself
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2796

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\SysWOW64\assembly\winrar.exe

Filesize
33KB

MD5
fb7b3668db7296ff35e0b20bbd210ea6

SHA1
25cf3c76a2bcd1907dee6da48facbdd28ccf2149

SHA256
4e833a9595653d4c0a799e912f3d1310f24415f964a4e81302dcca75027aa0b8

SHA512
d302c8d1bd9ab31f0df79be29e54eaf8eba153410773ece98127222484db479a599bb726a86836766372d7106d8a7db9a85fccbe1ac5869ebd6596139794fe6f

Download Submit
memory/2392-1-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2392-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2392-13-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2796-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2796-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2796-10-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2796-14-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2952-0-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2952-7-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads