xtremerat | b6a45feda45bf6b24362aacf994697e182c729a1030ec32115696b0798bd5299

General

Target

JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe
Size

65KB
MD5

79618611ac6a760a5613780f7b3e7943
SHA1

9f94724025210be321f6ed875e8f3682f89cc78c
SHA256

b6a45feda45bf6b24362aacf994697e182c729a1030ec32115696b0798bd5299
SHA512

50c4f8e88dea2489ff97a1d850da470cd42275172b26ec8568f7111750bf31e443e9a26c258c312fa2f1e4d0ad8d6ba94725a00be1f79a0c79c36c1fdd4cfb19
SSDEEP

1536:JXlel971b9LhPjgvckT7aNxhBs+BTf8o5Vujqu:JXls9svPT70xhBs+9fvY/

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/5136-5-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/5076-7-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/5136-8-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/5076-9-0x0000000010000000-0x000000001004D000-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 4044 set thread context of 5136	4044	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	88

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5136-2-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5136-4-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5136-5-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5136-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5076-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5136-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/5076-9-0x0000000010000000-0x000000001004D000-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
4376	5076	WerFault.exe	90
4812	5076	WerFault.exe	90

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_79618611ac6a760a5613780f7b3e7943.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4044	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4044 wrote to memory of 5136	4044	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	88
PID 4044 wrote to memory of 5136	4044	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	88
PID 4044 wrote to memory of 5136	4044	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	88
PID 4044 wrote to memory of 5136	4044	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	88
PID 4044 wrote to memory of 5136	4044	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	88
PID 4044 wrote to memory of 5136	4044	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	88
PID 4044 wrote to memory of 5136	4044	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	88
PID 4044 wrote to memory of 5136	4044	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	88
PID 5136 wrote to memory of 5076	5136	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	90
PID 5136 wrote to memory of 5076	5136	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	90
PID 5136 wrote to memory of 5076	5136	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	90
PID 5136 wrote to memory of 5076	5136	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	90
PID 5136 wrote to memory of 1708	5136	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	91
PID 5136 wrote to memory of 1708	5136	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	91
PID 5136 wrote to memory of 1708	5136	JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe	91

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4044
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_79618611ac6a760a5613780f7b3e7943.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5136
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5076
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 484
      4⤵
      Program crash
      PID:4376
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 504
      4⤵
      Program crash
      PID:4812
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:1708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 5076 -ip 5076
1⤵
PID:1824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 5076 -ip 5076
1⤵
PID:4628

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/5076-7-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5076-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5136-2-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5136-4-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5136-5-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5136-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5136-8-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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