xtremerat | 4e46dcb5edc79a4132579e1b1cc3e9c361cee08f546e6722dd3c69a2d7caef6f

General

Target

ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe
Size

75KB
MD5

ab736a636c06971e2d605a7b5788a7c7
SHA1

45c5f2bf22151a8cdfc58593d559dffbc3b9e14f
SHA256

4e46dcb5edc79a4132579e1b1cc3e9c361cee08f546e6722dd3c69a2d7caef6f
SHA512

dbfceaf2b75866f3f9798e4d25f43b43f1f3f5164c83bdb6c9daf5e07be1355dc8b3069198c6d13b39a2191be95ca178f4bfad76021828642ef0ca7131b12678
SSDEEP

1536:upqoX7c9EgqGdNe423+oFTFmWTQkQs95TL2XZUjAeP:k7IEgq2e423RhFmWxj95TAqAeP

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

133tfox.no-ip.org

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/2256-7-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2256-8-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4664-10-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2256-11-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4664-13-0x0000000010000000-0x000000001004D000-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 1168 set thread context of 2256	1168	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	82

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2256-3-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2256-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2256-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2256-8-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4664-10-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2256-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4664-13-0x0000000010000000-0x000000001004D000-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
2260	4664	WerFault.exe	83
4708	4664	WerFault.exe	83

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	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1168	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1168 wrote to memory of 2256	1168	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	82
PID 1168 wrote to memory of 2256	1168	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	82
PID 1168 wrote to memory of 2256	1168	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	82
PID 1168 wrote to memory of 2256	1168	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	82
PID 1168 wrote to memory of 2256	1168	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	82
PID 1168 wrote to memory of 2256	1168	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	82
PID 1168 wrote to memory of 2256	1168	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	82
PID 1168 wrote to memory of 2256	1168	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	82
PID 2256 wrote to memory of 4664	2256	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	83
PID 2256 wrote to memory of 4664	2256	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	83
PID 2256 wrote to memory of 4664	2256	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	83
PID 2256 wrote to memory of 4664	2256	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	83
PID 2256 wrote to memory of 1272	2256	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	84
PID 2256 wrote to memory of 1272	2256	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	84
PID 2256 wrote to memory of 1272	2256	ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe	84

C:\Users\Admin\AppData\Local\Temp\ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1168
- C:\Users\Admin\AppData\Local\Temp\ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\ab736a636c06971e2d605a7b5788a7c7_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2256
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4664
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4664 -s 480
      4⤵
      Program crash
      PID:2260
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4664 -s 488
      4⤵
      Program crash
      PID:4708
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:1272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4664 -ip 4664
1⤵
PID:3156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4664 -ip 4664
1⤵
PID:3184

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/1168-0-0x0000000075382000-0x0000000075383000-memory.dmp

Filesize
4KB

Download
memory/1168-1-0x0000000075380000-0x0000000075931000-memory.dmp

Filesize
5.7MB

Download
memory/1168-2-0x0000000075380000-0x0000000075931000-memory.dmp

Filesize
5.7MB

Download
memory/1168-9-0x0000000075380000-0x0000000075931000-memory.dmp

Filesize
5.7MB

Download
memory/2256-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2256-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2256-7-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2256-8-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2256-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4664-10-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4664-13-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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