xtremerat | 288e7be9f58eb6fbbbcaea85e71f2897123d01252dbdb2017778fb2ecf8c106f

General

Target

JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe
Size

416KB
MD5

5f2e7e5d8c6dabfbe4a3e9d8a493a623
SHA1

0c30cd452239c036b07c67e1be16b30eb1d4cb98
SHA256

288e7be9f58eb6fbbbcaea85e71f2897123d01252dbdb2017778fb2ecf8c106f
SHA512

b13847c24679609a09f950ad8fec918474c2168529e393b6fdcf222ddc854b85e1e9e0a759e16bb23267fd6ff21ad9566a5365f75584ca68f5e12da9a561a23f
SSDEEP

12288:Aeu/Bjg2KfEaceEoMOkGxyWXmu1N/qwl+jtCy:nW6fEpUHj1tqukoy

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/1112-17-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2480-22-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2480-23-0x00000000751D0000-0x00000000752C0000-memory.dmp	family_xtremerat
behavioral2/memory/2480-25-0x0000000010000000-0x000000001004D000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3176 set thread context of 1112	3176	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	82

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1112-14-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1112-16-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1112-17-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2480-22-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2480-25-0x0000000010000000-0x000000001004D000-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
3044	2480	WerFault.exe	83
1560	2480	WerFault.exe	83

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_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3176	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3176 wrote to memory of 1112	3176	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	82
PID 3176 wrote to memory of 1112	3176	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	82
PID 3176 wrote to memory of 1112	3176	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	82
PID 3176 wrote to memory of 1112	3176	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	82
PID 3176 wrote to memory of 1112	3176	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	82
PID 3176 wrote to memory of 1112	3176	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	82
PID 3176 wrote to memory of 1112	3176	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	82
PID 3176 wrote to memory of 1112	3176	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	82
PID 1112 wrote to memory of 2480	1112	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	83
PID 1112 wrote to memory of 2480	1112	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	83
PID 1112 wrote to memory of 2480	1112	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	83
PID 1112 wrote to memory of 2480	1112	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	83
PID 1112 wrote to memory of 2520	1112	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	84
PID 1112 wrote to memory of 2520	1112	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	84
PID 1112 wrote to memory of 2520	1112	JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe	84

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3176
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f2e7e5d8c6dabfbe4a3e9d8a493a623.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1112
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2480
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2480 -s 480
      4⤵
      Program crash
      PID:3044
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2480 -s 488
      4⤵
      Program crash
      PID:1560
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:2520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2480 -ip 2480
1⤵
PID:4808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2480 -ip 2480
1⤵
PID:3828

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/1112-14-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1112-24-0x00000000751D0000-0x00000000752C0000-memory.dmp

Filesize
960KB

Download
memory/1112-20-0x00000000751D0000-0x00000000752C0000-memory.dmp

Filesize
960KB

Download
memory/1112-17-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1112-16-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2480-26-0x00000000751D0000-0x00000000752C0000-memory.dmp

Filesize
960KB

Download
memory/2480-25-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2480-23-0x00000000751D0000-0x00000000752C0000-memory.dmp

Filesize
960KB

Download
memory/2480-22-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3176-3-0x0000000077252000-0x0000000077253000-memory.dmp

Filesize
4KB

Download
memory/3176-19-0x0000000000960000-0x00000000009AE000-memory.dmp

Filesize
312KB

Download
memory/3176-15-0x00000000751D0000-0x00000000752C0000-memory.dmp

Filesize
960KB

Download
memory/3176-8-0x00000000751D0000-0x00000000752C0000-memory.dmp

Filesize
960KB

Download
memory/3176-9-0x00000000751D0000-0x00000000752C0000-memory.dmp

Filesize
960KB

Download
memory/3176-2-0x0000000000A80000-0x0000000000A90000-memory.dmp

Filesize
64KB

Download
memory/3176-0-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download
memory/3176-12-0x00000000751D0000-0x00000000752C0000-memory.dmp

Filesize
960KB

Download
memory/3176-18-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/3176-21-0x00000000751D0000-0x00000000752C0000-memory.dmp

Filesize
960KB

Download
memory/3176-4-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/3176-7-0x00000000751F0000-0x00000000751F1000-memory.dmp

Filesize
4KB

Download
memory/3176-6-0x0000000000A00000-0x0000000000A10000-memory.dmp

Filesize
64KB

Download
memory/3176-5-0x0000000002430000-0x0000000002440000-memory.dmp

Filesize
64KB

Download
memory/3176-1-0x0000000000960000-0x00000000009AE000-memory.dmp

Filesize
312KB

Download

Analysis

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