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 5 IoCs

resource	yara_rule
behavioral1/memory/2376-6-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/2376-7-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/2460-11-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/2376-12-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral1/memory/2460-13-0x0000000010000000-0x000000001004D000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 236 set thread context of 2376	236	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	30

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2376-3-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2376-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2376-5-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2376-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2460-11-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2376-12-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral1/memory/2460-13-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	236	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 236 wrote to memory of 2376	236	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	30
PID 236 wrote to memory of 2376	236	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	30
PID 236 wrote to memory of 2376	236	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	30
PID 236 wrote to memory of 2376	236	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	30
PID 236 wrote to memory of 2376	236	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	30
PID 236 wrote to memory of 2376	236	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	30
PID 236 wrote to memory of 2376	236	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	30
PID 236 wrote to memory of 2376	236	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	30
PID 236 wrote to memory of 2376	236	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	30
PID 2376 wrote to memory of 2460	2376	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	31
PID 2376 wrote to memory of 2460	2376	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	31
PID 2376 wrote to memory of 2460	2376	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	31
PID 2376 wrote to memory of 2460	2376	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	31
PID 2376 wrote to memory of 2460	2376	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	31
PID 2376 wrote to memory of 2720	2376	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	32
PID 2376 wrote to memory of 2720	2376	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	32
PID 2376 wrote to memory of 2720	2376	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	32
PID 2376 wrote to memory of 2720	2376	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	32
PID 2376 wrote to memory of 2720	2376	3f7b3192e248f4c128f4879778f839b3_JaffaCakes118.exe	32

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:236
- 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:2376
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2460
- - C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe"
    3⤵
    PID:2720

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/236-0-0x0000000074D11000-0x0000000074D12000-memory.dmp

Filesize
4KB

Download
memory/236-1-0x0000000074D10000-0x00000000752BB000-memory.dmp

Filesize
5.7MB

Download
memory/236-2-0x0000000074D10000-0x00000000752BB000-memory.dmp

Filesize
5.7MB

Download
memory/236-8-0x0000000074D10000-0x00000000752BB000-memory.dmp

Filesize
5.7MB

Download
memory/2376-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2376-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2376-5-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2376-7-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2376-12-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2460-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2460-10-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2460-13-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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