xtremerat | 440523e49de8e740beb5610a8a7df3e7a13105299974842972d0eca0e41a18ab

General

Target

JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe
Size

19KB
MD5

a1bc46093609c3c2874ec43ad13e24e2
SHA1

01f1b430ab08f7127d0bb16e115d7049cb0dff64
SHA256

440523e49de8e740beb5610a8a7df3e7a13105299974842972d0eca0e41a18ab
SHA512

a5f19d661f8e77f2e22bdce3f3db76288197a92db45a56b05dc77a16b9662883d743cafaeb2c8da904bf7031ef32d5f0100d78710f3a08e8aece14ef05480eb6
SSDEEP

384:jHKZfuH87GowDqGoMwevqxP6k6zIDwPVBSfGuwgKHFzhUv7R:OZfuHUvwDKP6kMpmGuGFS

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral1/memory/5568-6-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral1/memory/6008-8-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral1/memory/4864-10-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral1/memory/6008-12-0x0000000000C80000-0x0000000000C95000-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\{78134Q4I-5Y0U-51GY-1054-84BF0488505S}\StubPath = "C:\\Windows\\system32\\InstallDir\\Server.exe restart"	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{78134Q4I-5Y0U-51GY-1054-84BF0488505S}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{78134Q4I-5Y0U-51GY-1054-84BF0488505S}\StubPath = "C:\\Windows\\system32\\InstallDir\\Server.exe"	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{78134Q4I-5Y0U-51GY-1054-84BF0488505S}	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.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\\InstallDir\\Server.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1062200478-553497403-3857448183-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\Server.exe"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\Server.exe"	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1062200478-553497403-3857448183-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\Server.exe"	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\InstallDir\Server.exe	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe
File opened for modification	C:\Windows\SysWOW64\InstallDir\Server.exe	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/4864-0-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/5568-6-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/files/0x00070000000241ef-7.dat	upx
behavioral1/memory/6008-8-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/4864-10-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/6008-12-0x0000000000C80000-0x0000000000C95000-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	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
6008	svchost.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4864 wrote to memory of 5568	4864	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe	88
PID 4864 wrote to memory of 5568	4864	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe	88
PID 4864 wrote to memory of 5568	4864	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe	88
PID 4864 wrote to memory of 5568	4864	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe	88
PID 4864 wrote to memory of 6008	4864	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe	90
PID 4864 wrote to memory of 6008	4864	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe	90
PID 4864 wrote to memory of 6008	4864	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe	90
PID 4864 wrote to memory of 1252	4864	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe	91
PID 4864 wrote to memory of 1252	4864	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe	91
PID 4864 wrote to memory of 1252	4864	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe	91
PID 4864 wrote to memory of 6008	4864	JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a1bc46093609c3c2874ec43ad13e24e2.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4864
- 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:5568
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:6008
- C:\Windows\SysWOW64\explorer.exe
  explorer.exe
  2⤵
  PID:1252

Network

MITRE ATT&CK Enterprise v16

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\InstallDir\Server.exe

Filesize
19KB

MD5
a1bc46093609c3c2874ec43ad13e24e2

SHA1
01f1b430ab08f7127d0bb16e115d7049cb0dff64

SHA256
440523e49de8e740beb5610a8a7df3e7a13105299974842972d0eca0e41a18ab

SHA512
a5f19d661f8e77f2e22bdce3f3db76288197a92db45a56b05dc77a16b9662883d743cafaeb2c8da904bf7031ef32d5f0100d78710f3a08e8aece14ef05480eb6

Download Submit
memory/4864-0-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/4864-10-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/5568-6-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/6008-8-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/6008-12-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads