xtremerat | 84079c86c2b28541dfd30a6593cd1c516cf3ceb6617e1b72c4df32e6e8b0889f

General

Target

54009613e47d93126d37dd7cb4a64534_JaffaCakes118.exe
Size

769KB
MD5

54009613e47d93126d37dd7cb4a64534
SHA1

fa0a507ddcd4dc8a17d85e74448702a2589f5582
SHA256

84079c86c2b28541dfd30a6593cd1c516cf3ceb6617e1b72c4df32e6e8b0889f
SHA512

522d4464727ea425f1e023cc26363124df6c84945472712dc348c9885e2f23bbbb880790e762b5f5249474798583d96bef1f65e9e0a4f756efb3eee73ac9572e
SSDEEP

24576:EoLwQGN2K3yWds0JkKyVDjVM8Qhpa0VUi6O:EoLljadsLhues

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

cuore.no-ip.org

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/5056-25-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/5056-23-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4312-26-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/5056-27-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4312-28-0x0000000010000000-0x000000001004D000-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

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	54009613e47d93126d37dd7cb4a64534_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
1368	7PB.exe
5056	7PB.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1368 set thread context of 5056	1368	7PB.exe	85

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5056-17-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5056-21-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5056-25-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5056-23-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4312-26-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5056-27-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4312-28-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\sexy-singles.jpg	54009613e47d93126d37dd7cb4a64534_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
816	4312	WerFault.exe	86
1824	4312	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 4 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	54009613e47d93126d37dd7cb4a64534_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7PB.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7PB.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1368	7PB.exe
1368	7PB.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 316 wrote to memory of 1368	316	54009613e47d93126d37dd7cb4a64534_JaffaCakes118.exe	84
PID 316 wrote to memory of 1368	316	54009613e47d93126d37dd7cb4a64534_JaffaCakes118.exe	84
PID 316 wrote to memory of 1368	316	54009613e47d93126d37dd7cb4a64534_JaffaCakes118.exe	84
PID 1368 wrote to memory of 5056	1368	7PB.exe	85
PID 1368 wrote to memory of 5056	1368	7PB.exe	85
PID 1368 wrote to memory of 5056	1368	7PB.exe	85
PID 1368 wrote to memory of 5056	1368	7PB.exe	85
PID 1368 wrote to memory of 5056	1368	7PB.exe	85
PID 1368 wrote to memory of 5056	1368	7PB.exe	85
PID 1368 wrote to memory of 5056	1368	7PB.exe	85
PID 1368 wrote to memory of 5056	1368	7PB.exe	85
PID 5056 wrote to memory of 4312	5056	7PB.exe	86
PID 5056 wrote to memory of 4312	5056	7PB.exe	86
PID 5056 wrote to memory of 4312	5056	7PB.exe	86
PID 5056 wrote to memory of 4312	5056	7PB.exe	86
PID 5056 wrote to memory of 1488	5056	7PB.exe	88
PID 5056 wrote to memory of 1488	5056	7PB.exe	88
PID 5056 wrote to memory of 1488	5056	7PB.exe	88

C:\Users\Admin\AppData\Local\Temp\54009613e47d93126d37dd7cb4a64534_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\54009613e47d93126d37dd7cb4a64534_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:316
- C:\Users\Admin\AppData\Local\Temp\7PB.exe
  "C:\Users\Admin\AppData\Local\Temp\7PB.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1368
- - C:\Users\Admin\AppData\Local\Temp\7PB.exe
    C:\Users\Admin\AppData\Local\Temp\7PB.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5056
  - - C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      4⤵
      System Location Discovery: System Language Discovery
      PID:4312
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4312 -s 480
        5⤵
        Program crash
        
        PID:816
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4312 -s 488
        5⤵
        Program crash
        
        PID:1824
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
      4⤵
      PID:1488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4312 -ip 4312
1⤵
PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4312 -ip 4312
1⤵
PID:2644

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\7PB.exe

Filesize
684KB

MD5
b7ad0b8ca1cbf928fcd496108935182e

SHA1
96b7ee99c9cd5ab58efa3e7b4b5eda4cc9856b81

SHA256
a8af2e395a6b12fd67fbfb95eec22717331a1ac3f316b9297776f1b952e2c902

SHA512
8e88cd1c1c4d3ab7006f0127e753ecb9efc08167834c55dcb5daa77a70649bb0e32192694bbe1eb11a1966836ca5c76368742139b892d55f1deca06f99442ffc

Download Submit
memory/316-12-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1368-13-0x0000000000400000-0x00000000007BA000-memory.dmp

Filesize
3.7MB

Download
memory/1368-24-0x0000000000400000-0x00000000007BA000-memory.dmp

Filesize
3.7MB

Download
memory/4312-26-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4312-28-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5056-17-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5056-20-0x0000000000400000-0x00000000007BA000-memory.dmp

Filesize
3.7MB

Download
memory/5056-21-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5056-25-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5056-23-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5056-27-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing