xtremerat | 3fb4f94d427a65dbb4e463956b61e259c04740baa2692af76d147fd809c39287

General

Target

JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe
Size

670KB
MD5

7ab2fe11a875cbe0f878ea6712f2cfba
SHA1

b955a3aa798672eb07b1fbcf2e10f786c763f1f2
SHA256

3fb4f94d427a65dbb4e463956b61e259c04740baa2692af76d147fd809c39287
SHA512

98b902b1e70f1530e00aad8f97115ce11a79c7d7e81e41bd1eac69926222fa521081cb4e49a7fcb0eb509bd5a884b5560b84839b1b3b1550687ae6f440c2fd88
SSDEEP

12288:6b8HOo7YNQk4WioPJicryGBWECTUuRq+bW9Q2nSr3/35ellbLdJutmtwL5tdT3pH:HnwQN6icoECDRN47nQ3v0ldutkw9tdTt

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

g.tzo.net

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/552-9-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/552-10-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/6084-11-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/552-12-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/6084-13-0x0000000010000000-0x000000001004D000-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 5584 set thread context of 552	5584	JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe	87

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/552-4-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/552-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/552-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/552-10-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/6084-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/552-12-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/6084-13-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1600	6084	WerFault.exe	88
1652	6084	WerFault.exe	88

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_7ab2fe11a875cbe0f878ea6712f2cfba.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5584	JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe
5584	JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5584 wrote to memory of 552	5584	JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe	87
PID 5584 wrote to memory of 552	5584	JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe	87
PID 5584 wrote to memory of 552	5584	JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe	87
PID 5584 wrote to memory of 552	5584	JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe	87
PID 5584 wrote to memory of 552	5584	JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe	87
PID 5584 wrote to memory of 552	5584	JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe	87
PID 5584 wrote to memory of 552	5584	JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe	87
PID 5584 wrote to memory of 552	5584	JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe	87
PID 552 wrote to memory of 6084	552	svchost.exe	88
PID 552 wrote to memory of 6084	552	svchost.exe	88
PID 552 wrote to memory of 6084	552	svchost.exe	88
PID 552 wrote to memory of 6084	552	svchost.exe	88
PID 552 wrote to memory of 1420	552	svchost.exe	89
PID 552 wrote to memory of 1420	552	svchost.exe	89
PID 552 wrote to memory of 1420	552	svchost.exe	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ab2fe11a875cbe0f878ea6712f2cfba.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5584
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:552
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:6084
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 6084 -s 480
      4⤵
      Program crash
      PID:1600
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 6084 -s 500
      4⤵
      Program crash
      PID:1652
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:1420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 6084 -ip 6084
1⤵
PID:4632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 6084 -ip 6084
1⤵
PID:3264

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/552-4-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/552-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/552-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/552-10-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/552-12-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/5584-0-0x0000000000400000-0x00000000007D0000-memory.dmp

Filesize
3.8MB

Download
memory/5584-8-0x0000000000400000-0x00000000007D0000-memory.dmp

Filesize
3.8MB

Download
memory/6084-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/6084-13-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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