xtremerat | b9a6b47359f9e7f120e6aa05c2653e91bd834052a82854fdd3b5dbf97df99776

General

Target

b9a6b47359f9e7f120e6aa05c2653e91bd834052a82854fdd3b5dbf97df99776.exe
Size

30KB
MD5

0492a767672d6d830c40135e817b6730
SHA1

49bf2a2aa7978e3ef88665a862ed984432157b10
SHA256

b9a6b47359f9e7f120e6aa05c2653e91bd834052a82854fdd3b5dbf97df99776
SHA512

4ec2183320584ce464d55296aa3ce0786ad393142e875c911ddab50692f10f4f30d2739e82f6005c38b4bb65cf6c6d0cb628e587e2c34475242ee12d8ba34f15
SSDEEP

384:ixK81e1TSUARnm9E3/uk0vkA3Ea38I4yXhd9prziSASusimsmonZw87WboXbQ3:iYUecFuDvkAnKyXpprYVm5oF

Score

10^/10

Malware Config

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/4156-136-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral2/memory/4788-137-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral2/memory/4788-138-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral2/memory/4156-139-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral2/memory/4788-140-0x0000000000C80000-0x0000000000C95000-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

Executes dropped EXE 1 IoCs

pid	Process
4156	show_girl.exe

Modifies Installed Components in the registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{7DU6C262-078C-X1XI-S7OI-H65640R3O2WF}	show_girl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{7DU6C262-078C-X1XI-S7OI-H65640R3O2WF}\StubPath = "C:\\Windows\\InstallDir\\Server.exe restart"	show_girl.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000300000000071f-133.dat	upx
behavioral2/files/0x000300000000071f-134.dat	upx
behavioral2/memory/2552-135-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4156-136-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral2/memory/4788-138-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral2/memory/4156-139-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral2/memory/4788-140-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx

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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	b9a6b47359f9e7f120e6aa05c2653e91bd834052a82854fdd3b5dbf97df99776.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	show_girl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\InstallDir\\Server.exe"	show_girl.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run	show_girl.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Server.exe"	show_girl.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\InstallDir\Server.exe	show_girl.exe
File created	C:\Windows\InstallDir\Server.exe	show_girl.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4788	svchost.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 4156	2552	b9a6b47359f9e7f120e6aa05c2653e91bd834052a82854fdd3b5dbf97df99776.exe	81
PID 2552 wrote to memory of 4156	2552	b9a6b47359f9e7f120e6aa05c2653e91bd834052a82854fdd3b5dbf97df99776.exe	81
PID 2552 wrote to memory of 4156	2552	b9a6b47359f9e7f120e6aa05c2653e91bd834052a82854fdd3b5dbf97df99776.exe	81
PID 4156 wrote to memory of 4812	4156	show_girl.exe	82
PID 4156 wrote to memory of 4812	4156	show_girl.exe	82
PID 4156 wrote to memory of 4812	4156	show_girl.exe	82
PID 4156 wrote to memory of 4900	4156	show_girl.exe	83
PID 4156 wrote to memory of 4900	4156	show_girl.exe	83
PID 4156 wrote to memory of 4900	4156	show_girl.exe	83
PID 4156 wrote to memory of 4788	4156	show_girl.exe	84
PID 4156 wrote to memory of 4788	4156	show_girl.exe	84
PID 4156 wrote to memory of 4788	4156	show_girl.exe	84
PID 4156 wrote to memory of 4788	4156	show_girl.exe	84

C:\Users\Admin\AppData\Local\Temp\b9a6b47359f9e7f120e6aa05c2653e91bd834052a82854fdd3b5dbf97df99776.exe
"C:\Users\Admin\AppData\Local\Temp\b9a6b47359f9e7f120e6aa05c2653e91bd834052a82854fdd3b5dbf97df99776.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Users\Admin\AppData\Local\Temp\show_girl.exe
  "C:\Users\Admin\AppData\Local\Temp\show_girl.exe"
  2⤵
  - Executes dropped EXE
  - Modifies Installed Components in the registry
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4156
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:4812
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:4900
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:4788

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
19KB

MD5
e3ad5296ead3f2cc57820b7383b5558a

SHA1
c1d78278e85bca5c65f992d8d4ecea7873912f80

SHA256
6a5e5406f604ab70019cd6b3ac3d85e0f017fe52d326716149eca7a7301f59aa

SHA512
94aa526d8f98b1c0b9360af069bb7a0094606bd8bf25603a5ced26b3650e360d80f1f3faac0bf067ff24a550965b2ebf8a2c04acaf99c9033a656ded773eff68

Download Submit
C:\Users\Admin\AppData\Local\Temp\show_girl.exe

Filesize
19KB

MD5
e3ad5296ead3f2cc57820b7383b5558a

SHA1
c1d78278e85bca5c65f992d8d4ecea7873912f80

SHA256
6a5e5406f604ab70019cd6b3ac3d85e0f017fe52d326716149eca7a7301f59aa

SHA512
94aa526d8f98b1c0b9360af069bb7a0094606bd8bf25603a5ced26b3650e360d80f1f3faac0bf067ff24a550965b2ebf8a2c04acaf99c9033a656ded773eff68

Download Submit
memory/2552-135-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4156-136-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/4156-139-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/4788-138-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/4788-140-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads