xtremerat | 76b19c816680d2463447e55ff6e05a54de6152e20954df549f058392919fc6c4

General

Target

df66f0ca4eedda1c0153aff63743f95f_JaffaCakes118.exe
Size

82KB
MD5

df66f0ca4eedda1c0153aff63743f95f
SHA1

8b135e7c16dd6035df7bbc07e94330a590138e58
SHA256

76b19c816680d2463447e55ff6e05a54de6152e20954df549f058392919fc6c4
SHA512

cdf3de415da553c582fb7693bada6eaabf54bc9fd61cbffda482e1078de22edb75ac2a09b5368cb4ce925ad7725904fd3af17f989320a096da84b717dec669e8
SSDEEP

1536:dSfWkjK0aKqqVs9WzJmv/DdSeWJxfnsf0Zop/m+mxyxHsItTedbDVO7wGU0BM/eh:d4D20kqa9WdmnDYTPsf0Zow+m0lttCdG

Score

10^/10

xtremerat discovery persistence rat spyware

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023c83-12.dat	family_xtremerat
behavioral2/memory/3228-18-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/2820-19-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3228-20-0x0000000010000000-0x000000001004A000-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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	df66f0ca4eedda1c0153aff63743f95f_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	CryptedFile.exe

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
2848	3228	WerFault.exe	85
3092	3228	WerFault.exe	85

System Location Discovery: System Language Discovery 1 TTPs 2 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	CryptedFile.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1036 wrote to memory of 2820	1036	df66f0ca4eedda1c0153aff63743f95f_JaffaCakes118.exe	84
PID 1036 wrote to memory of 2820	1036	df66f0ca4eedda1c0153aff63743f95f_JaffaCakes118.exe	84
PID 1036 wrote to memory of 2820	1036	df66f0ca4eedda1c0153aff63743f95f_JaffaCakes118.exe	84
PID 2820 wrote to memory of 3228	2820	CryptedFile.exe	85
PID 2820 wrote to memory of 3228	2820	CryptedFile.exe	85
PID 2820 wrote to memory of 3228	2820	CryptedFile.exe	85
PID 2820 wrote to memory of 3228	2820	CryptedFile.exe	85
PID 2820 wrote to memory of 1580	2820	CryptedFile.exe	86
PID 2820 wrote to memory of 1580	2820	CryptedFile.exe	86
PID 2820 wrote to memory of 1580	2820	CryptedFile.exe	86

C:\Users\Admin\AppData\Local\Temp\df66f0ca4eedda1c0153aff63743f95f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\df66f0ca4eedda1c0153aff63743f95f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1036
- C:\Users\Admin\AppData\Local\Temp\CryptedFile.exe
  "C:\Users\Admin\AppData\Local\Temp\CryptedFile.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2820
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3228
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3228 -s 484
      4⤵
      Program crash
      PID:2848
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3228 -s 504
      4⤵
      Program crash
      PID:3092
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:1580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3228 -ip 3228
1⤵
PID:2496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3228 -ip 3228
1⤵
PID:2444

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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

C:\Users\Admin\AppData\Local\Temp\CryptedFile.exe

Filesize
65KB

MD5
9d85ce7760eca54db59755eae9ef3175

SHA1
81ece56f5d159c7a25cfa67bc2bc5de8602b0776

SHA256
2b2a8f5f2d9ffe7a82671f2f46d580f9a0c5914af6ff4138b76d6dd94b047042

SHA512
c348586e9d0e2d1199a6e34692882eb243f3186328b1380e53479578a1d787dc02fb314dd1bcd180c743a392da298d2407d919ed40f42525cd2271c2c45dc1f8

Download Submit
memory/1036-6-0x0000000001620000-0x0000000001628000-memory.dmp

Filesize
32KB

Download
memory/1036-2-0x000000001C0A0000-0x000000001C56E000-memory.dmp

Filesize
4.8MB

Download
memory/1036-3-0x00007FF909C00000-0x00007FF90A5A1000-memory.dmp

Filesize
9.6MB

Download
memory/1036-4-0x00007FF909C00000-0x00007FF90A5A1000-memory.dmp

Filesize
9.6MB

Download
memory/1036-5-0x000000001C680000-0x000000001C71C000-memory.dmp

Filesize
624KB

Download
memory/1036-0-0x00007FF909EB5000-0x00007FF909EB6000-memory.dmp

Filesize
4KB

Download
memory/1036-7-0x000000001C7E0000-0x000000001C82C000-memory.dmp

Filesize
304KB

Download
memory/1036-1-0x000000001BB10000-0x000000001BBB6000-memory.dmp

Filesize
664KB

Download
memory/1036-17-0x00007FF909C00000-0x00007FF90A5A1000-memory.dmp

Filesize
9.6MB

Download
memory/2820-19-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/3228-18-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/3228-20-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download

Analysis

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