xtremerat | 051735babb059ece0a0508d997ee23c4dda6a84520b1f871ecec340311f1750e

General

Target

JaffaCakes118_836deb007747bc0637181689aed528e4.exe
Size

52KB
MD5

836deb007747bc0637181689aed528e4
SHA1

4f4d29fd4067e53c86128d4b2d922074e7b94843
SHA256

051735babb059ece0a0508d997ee23c4dda6a84520b1f871ecec340311f1750e
SHA512

7cad894dbc064b5a876dcc90df4a9a3a4de072c26fb788100119f8d4ad2b5a3047a4da728deb5920fb89448756a09f2e1d2e1409b37fb391f05f0bea47e7cb25
SSDEEP

1536:iNW71rcYDAWeotvXl7g+bowgM7VHlaFqo:iNW7dEvotvXxg+Fg6VFaF

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

proturkey.no-ip.biz

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/5028-1-0x0000000010000000-0x0000000010051000-memory.dmp	family_xtremerat
behavioral2/memory/4516-14-0x0000000010000000-0x0000000010051000-memory.dmp	family_xtremerat
behavioral2/memory/5028-18-0x0000000010000000-0x0000000010051000-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-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation	JaffaCakes118_836deb007747bc0637181689aed528e4.exe

Executes dropped EXE 1 IoCs

pid	Process
4520	156Bot v1878.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4516-0-0x0000000010000000-0x0000000010051000-memory.dmp	upx
behavioral2/memory/5028-1-0x0000000010000000-0x0000000010051000-memory.dmp	upx
behavioral2/memory/4516-14-0x0000000010000000-0x0000000010051000-memory.dmp	upx
behavioral2/memory/5028-18-0x0000000010000000-0x0000000010051000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\156Bot v1878.exe.exe	JaffaCakes118_836deb007747bc0637181689aed528e4.exe
File created	C:\Windows\156Bot v1878.exe	JaffaCakes118_836deb007747bc0637181689aed528e4.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
2732	5028	WerFault.exe	87
1372	5028	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	156Bot v1878.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_836deb007747bc0637181689aed528e4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4520	156Bot v1878.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4516 wrote to memory of 5028	4516	JaffaCakes118_836deb007747bc0637181689aed528e4.exe	87
PID 4516 wrote to memory of 5028	4516	JaffaCakes118_836deb007747bc0637181689aed528e4.exe	87
PID 4516 wrote to memory of 5028	4516	JaffaCakes118_836deb007747bc0637181689aed528e4.exe	87
PID 4516 wrote to memory of 5028	4516	JaffaCakes118_836deb007747bc0637181689aed528e4.exe	87
PID 4516 wrote to memory of 1108	4516	JaffaCakes118_836deb007747bc0637181689aed528e4.exe	88
PID 4516 wrote to memory of 1108	4516	JaffaCakes118_836deb007747bc0637181689aed528e4.exe	88
PID 4516 wrote to memory of 1108	4516	JaffaCakes118_836deb007747bc0637181689aed528e4.exe	88
PID 4516 wrote to memory of 4520	4516	JaffaCakes118_836deb007747bc0637181689aed528e4.exe	93
PID 4516 wrote to memory of 4520	4516	JaffaCakes118_836deb007747bc0637181689aed528e4.exe	93
PID 4516 wrote to memory of 4520	4516	JaffaCakes118_836deb007747bc0637181689aed528e4.exe	93

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_836deb007747bc0637181689aed528e4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_836deb007747bc0637181689aed528e4.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4516
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5028
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5028 -s 468
    3⤵
    - Program crash
    PID:2732
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5028 -s 488
    3⤵
    - Program crash
    PID:1372
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
  2⤵
  PID:1108
- C:\Windows\156Bot v1878.exe
  "C:\Windows\156Bot v1878.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5028 -ip 5028
1⤵
PID:436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 5028 -ip 5028
1⤵
PID:3800

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

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Downloads

C:\Windows\156Bot v1878.exe

Filesize
16KB

MD5
d507e1fb3e28fc76e705bfac8d3bbfe9

SHA1
635ba6b7ddb1fa23c2fbf546088244ac1188c3db

SHA256
f1c89d77962d54b3c55385856872387ed79673fba43427d3e86a60c7a740cb74

SHA512
adb1d4993bcdfceaa70ce5d88a7afae9106fd7899d77c5f884e0391d89460885c6b4cc01b00cb02eae40d1beb63f0c382a1316bc93c12a163c1880b4ed5210b5

Download Submit
memory/4516-0-0x0000000010000000-0x0000000010051000-memory.dmp

Filesize
324KB

Download
memory/4516-14-0x0000000010000000-0x0000000010051000-memory.dmp

Filesize
324KB

Download
memory/5028-1-0x0000000010000000-0x0000000010051000-memory.dmp

Filesize
324KB

Download
memory/5028-18-0x0000000010000000-0x0000000010051000-memory.dmp

Filesize
324KB

Download

Analysis

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