xtremerat | 53650090b9038f83f9d9cb64768876abf59f6c0ad22fbb97050644ef09841a7a

General

Target

cfaf2f9f41187d2c3bde26abd44943ed_JaffaCakes118.exe
Size

71KB
MD5

cfaf2f9f41187d2c3bde26abd44943ed
SHA1

0adf4ec0d322e9c4276c87e8e6a08cf41da60d54
SHA256

53650090b9038f83f9d9cb64768876abf59f6c0ad22fbb97050644ef09841a7a
SHA512

a6ce8955690870b4fe85a2bf78085e2a97f17a834b83f46fc6ae29c51bdfc5417058b60400e93c7b3c05fc4e1511c73424a8c9d3b668f8e56a19f42a9721e962
SSDEEP

1536:ObtbI4ZmN264cDWrZ9q5npFy5k1ufvrMK9SCgCnOV35:ObV4WrZIlKkAfvrMKthIp

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

Create sebirkan99.no-ip.biz

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/3660-24-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3660-23-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3624-25-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3660-26-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3624-27-0x0000000010000000-0x000000001004D000-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

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	cfaf2f9f41187d2c3bde26abd44943ed_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
3632	hilem.exe
3660	hilem.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3632 set thread context of 3660	3632	hilem.exe	84

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b93-6.dat	upx
behavioral2/memory/3632-12-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/memory/3660-17-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3632-21-0x0000000000400000-0x0000000000410000-memory.dmp	upx
behavioral2/memory/3660-22-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3660-24-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3660-23-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3624-25-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3660-26-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3624-27-0x0000000010000000-0x000000001004D000-memory.dmp	upx

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
892	3624	WerFault.exe	85
4908	3624	WerFault.exe	85

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	hilem.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hilem.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cfaf2f9f41187d2c3bde26abd44943ed_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5056	cfaf2f9f41187d2c3bde26abd44943ed_JaffaCakes118.exe
3632	hilem.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 5056 wrote to memory of 3632	5056	cfaf2f9f41187d2c3bde26abd44943ed_JaffaCakes118.exe	83
PID 5056 wrote to memory of 3632	5056	cfaf2f9f41187d2c3bde26abd44943ed_JaffaCakes118.exe	83
PID 5056 wrote to memory of 3632	5056	cfaf2f9f41187d2c3bde26abd44943ed_JaffaCakes118.exe	83
PID 3632 wrote to memory of 3660	3632	hilem.exe	84
PID 3632 wrote to memory of 3660	3632	hilem.exe	84
PID 3632 wrote to memory of 3660	3632	hilem.exe	84
PID 3632 wrote to memory of 3660	3632	hilem.exe	84
PID 3632 wrote to memory of 3660	3632	hilem.exe	84
PID 3632 wrote to memory of 3660	3632	hilem.exe	84
PID 3632 wrote to memory of 3660	3632	hilem.exe	84
PID 3632 wrote to memory of 3660	3632	hilem.exe	84
PID 3660 wrote to memory of 3624	3660	hilem.exe	85
PID 3660 wrote to memory of 3624	3660	hilem.exe	85
PID 3660 wrote to memory of 3624	3660	hilem.exe	85
PID 3660 wrote to memory of 3624	3660	hilem.exe	85
PID 3660 wrote to memory of 1756	3660	hilem.exe	86
PID 3660 wrote to memory of 1756	3660	hilem.exe	86
PID 3660 wrote to memory of 1756	3660	hilem.exe	86

C:\Users\Admin\AppData\Local\Temp\cfaf2f9f41187d2c3bde26abd44943ed_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cfaf2f9f41187d2c3bde26abd44943ed_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5056
- C:\Users\Admin\AppData\Local\Temp\hilem.exe
  "C:\Users\Admin\AppData\Local\Temp\hilem.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3632
- - C:\Users\Admin\AppData\Local\Temp\hilem.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3660
  - - C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      4⤵
      System Location Discovery: System Language Discovery
      PID:3624
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3624 -s 480
        5⤵
        Program crash
        
        PID:892
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3624 -s 488
        5⤵
        Program crash
        
        PID:4908
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
      4⤵
      PID:1756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3624 -ip 3624
1⤵
PID:2896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3624 -ip 3624
1⤵
PID:2312

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\hilem.exe

Filesize
54KB

MD5
e3919a4d64f3979d6c606daab9622f09

SHA1
8b3213b163083c142fe6a2fec15624c63f71ca39

SHA256
9bcf15e7fd751f7c380c88a484b41964c3b55d31cdca912e9c2bae2f2eb4a84c

SHA512
071dad0b1b944b1a3506afba358266fa9e449564c6d19b078c6d0c69b7d19c97471f47bdf7a8c09fd1f9d2286002ce0d18b87f52f0f7cacd062f28511da52c49

Download Submit
memory/3624-25-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3624-27-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3632-12-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3632-21-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3660-17-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3660-22-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3660-24-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3660-23-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3660-26-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5056-15-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

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