xtremerat | 1bcf7ab9df0b2e8906a7f6ef06dcb2692130d0c6ccd387b1affd9e0780f037fe

General

Target

590433f876b83b78efb954900371c41c_JaffaCakes118.exe
Size

312KB
MD5

590433f876b83b78efb954900371c41c
SHA1

463f5a14a3165f77cd86011e123c783f5e0392df
SHA256

1bcf7ab9df0b2e8906a7f6ef06dcb2692130d0c6ccd387b1affd9e0780f037fe
SHA512

7da39ff77cd6c2e7fc6d1b76231662b6e604890176cd238284aa7f9684cd509f53cce2a5a36293c404d90d3caa0b91841cddc39f27f05d75aee95234e16ef306
SSDEEP

6144:KxK3EdhAcBWEEb/pKoG2uZOX6/78EHvlHxPgEN5K6zZLo6:9dGWEw/prGtYTatRoI5K6z9t

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

iuyfdsghj.myvnc.com

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/2428-9-0x0000000010000000-0x000000001004F000-memory.dmp	family_xtremerat
behavioral2/memory/764-10-0x0000000010000000-0x000000001004F000-memory.dmp	family_xtremerat
behavioral2/memory/764-13-0x0000000010000000-0x000000001004F000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 792 set thread context of 2428	792	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	86

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2428-4-0x0000000010000000-0x000000001004F000-memory.dmp	upx
behavioral2/memory/2428-6-0x0000000010000000-0x000000001004F000-memory.dmp	upx
behavioral2/memory/2428-9-0x0000000010000000-0x000000001004F000-memory.dmp	upx
behavioral2/memory/764-10-0x0000000010000000-0x000000001004F000-memory.dmp	upx
behavioral2/memory/764-13-0x0000000010000000-0x000000001004F000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\59ima.jpg.exe	590433f876b83b78efb954900371c41c_JaffaCakes118.exe
File created	C:\Windows\59ima.jpg	590433f876b83b78efb954900371c41c_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
2260	764	WerFault.exe	87
3820	764	WerFault.exe	87

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	590433f876b83b78efb954900371c41c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	590433f876b83b78efb954900371c41c_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
792	590433f876b83b78efb954900371c41c_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 792 wrote to memory of 2428	792	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	86
PID 792 wrote to memory of 2428	792	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	86
PID 792 wrote to memory of 2428	792	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	86
PID 792 wrote to memory of 2428	792	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	86
PID 792 wrote to memory of 2428	792	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	86
PID 792 wrote to memory of 2428	792	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	86
PID 792 wrote to memory of 2428	792	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	86
PID 792 wrote to memory of 2428	792	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	86
PID 2428 wrote to memory of 764	2428	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	87
PID 2428 wrote to memory of 764	2428	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	87
PID 2428 wrote to memory of 764	2428	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	87
PID 2428 wrote to memory of 764	2428	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	87
PID 2428 wrote to memory of 3416	2428	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	88
PID 2428 wrote to memory of 3416	2428	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	88
PID 2428 wrote to memory of 3416	2428	590433f876b83b78efb954900371c41c_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\590433f876b83b78efb954900371c41c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\590433f876b83b78efb954900371c41c_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:792
- C:\Users\Admin\AppData\Local\Temp\590433f876b83b78efb954900371c41c_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\590433f876b83b78efb954900371c41c_JaffaCakes118.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2428
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:764
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 480
      4⤵
      Program crash
      PID:2260
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 764 -s 488
      4⤵
      Program crash
      PID:3820
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:3416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 764 -ip 764
1⤵
PID:5004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 764 -ip 764
1⤵
PID:4024

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

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Downloads

memory/764-10-0x0000000010000000-0x000000001004F000-memory.dmp

Filesize
316KB

Download
memory/764-13-0x0000000010000000-0x000000001004F000-memory.dmp

Filesize
316KB

Download
memory/792-0-0x0000000000400000-0x00000000004FB000-memory.dmp

Filesize
1004KB

Download
memory/792-1-0x0000000000401000-0x00000000004DB000-memory.dmp

Filesize
872KB

Download
memory/792-8-0x0000000000400000-0x00000000004FB000-memory.dmp

Filesize
1004KB

Download
memory/2428-4-0x0000000010000000-0x000000001004F000-memory.dmp

Filesize
316KB

Download
memory/2428-6-0x0000000010000000-0x000000001004F000-memory.dmp

Filesize
316KB

Download
memory/2428-9-0x0000000010000000-0x000000001004F000-memory.dmp

Filesize
316KB

Download

Analysis

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