xtremerat | 4c24336780f386be455a048edb0ace3a989288274ebb564ef2970db44498982f

General

Target

f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe
Size

125KB
MD5

f6b3f4d4c878f05f873fd8ef54df4cf0
SHA1

79eb685414b1323f9e9f49f336117e2d4271b13f
SHA256

4c24336780f386be455a048edb0ace3a989288274ebb564ef2970db44498982f
SHA512

dd1e2035ae2d36907dfbc1799006df75f534e40f35c20fd5c27eb2ef46d143676558a770916a2f595d8f7fa3e308f4ce6605e04b098a408a37f0a5ae8302cf60
SSDEEP

3072:d0PpDmmBFH6d23ggFLnfDtcwZp6tZ1krgQte0pXN:EFaFghpcwZp6Bk0Q13

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

alnmroood.zapto.org

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/3260-9-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/3260-8-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4584-10-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4584-11-0x0000000010000000-0x000000001004D000-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 632 set thread context of 3260	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	84

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3260-3-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3260-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3260-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3260-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4584-10-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4584-11-0x0000000010000000-0x000000001004D000-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
1188	4584	WerFault.exe	85
4932	4584	WerFault.exe	85

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	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 632 wrote to memory of 4384	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	83
PID 632 wrote to memory of 4384	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	83
PID 632 wrote to memory of 4384	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	83
PID 632 wrote to memory of 3260	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	84
PID 632 wrote to memory of 3260	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	84
PID 632 wrote to memory of 3260	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	84
PID 632 wrote to memory of 3260	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	84
PID 632 wrote to memory of 3260	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	84
PID 632 wrote to memory of 3260	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	84
PID 632 wrote to memory of 3260	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	84
PID 632 wrote to memory of 3260	632	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	84
PID 3260 wrote to memory of 4584	3260	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	85
PID 3260 wrote to memory of 4584	3260	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	85
PID 3260 wrote to memory of 4584	3260	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	85
PID 3260 wrote to memory of 4584	3260	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	85
PID 3260 wrote to memory of 4088	3260	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	86
PID 3260 wrote to memory of 4088	3260	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	86
PID 3260 wrote to memory of 4088	3260	f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:632
- C:\Users\Admin\AppData\Local\Temp\f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe
  f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe
  2⤵
  PID:4384
- C:\Users\Admin\AppData\Local\Temp\f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe
  f6b3f4d4c878f05f873fd8ef54df4cf0_JaffaCakes118.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3260
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4584
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4584 -s 480
      4⤵
      Program crash
      PID:1188
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4584 -s 504
      4⤵
      Program crash
      PID:4932
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:4088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4584 -ip 4584
1⤵
PID:4836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4584 -ip 4584
1⤵
PID:4640

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/632-0-0x0000000075542000-0x0000000075543000-memory.dmp

Filesize
4KB

Download
memory/632-1-0x0000000075540000-0x0000000075AF1000-memory.dmp

Filesize
5.7MB

Download
memory/632-2-0x0000000075540000-0x0000000075AF1000-memory.dmp

Filesize
5.7MB

Download
memory/632-7-0x0000000075540000-0x0000000075AF1000-memory.dmp

Filesize
5.7MB

Download
memory/3260-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3260-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3260-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3260-8-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4584-10-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4584-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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