xtremerat | a4d781cfc91243823dcb41bd0d2bb74273ec9bef4a81a62ba3842ab61be8d893

General

Target

3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe
Size

169KB
MD5

3f7b3192e248f4c128f4879778f839b3
SHA1

31fc8f7132f8bc56ac7220336a3a20d02e4ad30b
SHA256

a4d781cfc91243823dcb41bd0d2bb74273ec9bef4a81a62ba3842ab61be8d893
SHA512

6fa360836377b79e387df3eacd32d1cd142a2a66809763f779cd8353ca209adb7deeb233fce4b842ca28d89eb76504158bd08f2ae054d7bb2dcda78271c82c67
SSDEEP

1536:nbWvj5kE3JWSgAb4dLToqB6tFYVsygOoayFUDkCZuuPBmi3DhhzZDvpg+ozTw0qr:nbKk4bovH6cEhayFUDkW9FYwMuqWsu

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4192-5-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4484-7-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4484-9-0x0000000010000000-0x000000001004D000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2672 set thread context of 4192	2672	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	86

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4192-1-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4192-4-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4192-5-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4484-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4484-9-0x0000000010000000-0x000000001004D000-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
4280	4484	WerFault.exe	87
2996	4484	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	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2672	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 4192	2672	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	86
PID 2672 wrote to memory of 4192	2672	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	86
PID 2672 wrote to memory of 4192	2672	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	86
PID 2672 wrote to memory of 4192	2672	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	86
PID 2672 wrote to memory of 4192	2672	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	86
PID 2672 wrote to memory of 4192	2672	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	86
PID 2672 wrote to memory of 4192	2672	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	86
PID 2672 wrote to memory of 4192	2672	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	86
PID 4192 wrote to memory of 4484	4192	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	87
PID 4192 wrote to memory of 4484	4192	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	87
PID 4192 wrote to memory of 4484	4192	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	87
PID 4192 wrote to memory of 4484	4192	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	87
PID 4192 wrote to memory of 2796	4192	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	88
PID 4192 wrote to memory of 2796	4192	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	88
PID 4192 wrote to memory of 2796	4192	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2672
- C:\Users\Admin\AppData\Local\Temp\3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4192
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4484
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 488
      4⤵
      Program crash
      PID:4280
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 496
      4⤵
      Program crash
      PID:2996
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:2796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4484 -ip 4484
1⤵
PID:4640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4484 -ip 4484
1⤵
PID:3456

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/2672-0-0x00007FFD83130000-0x00007FFD83325000-memory.dmp

Filesize
2.0MB

Download
memory/4192-1-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4192-4-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4192-6-0x00007FFD83130000-0x00007FFD83325000-memory.dmp

Filesize
2.0MB

Download
memory/4192-5-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4484-7-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4484-8-0x00007FFD83130000-0x00007FFD83325000-memory.dmp

Filesize
2.0MB

Download
memory/4484-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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