6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a

Analysis

max time kernel
51s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01-07-2024 03:22

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General

Target

6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe
Size

407KB
MD5

7e492f30b9fbf2ec6566e525fff7ab3b
SHA1

1e8cf3feda33cdf31296806d33b80c8d72b74d66
SHA256

6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a
SHA512

11ba4bed8659c7e1aa77888a4f793b0adce204e8f5cedc73ed71a3d4df93f5835abdb248733f9c3d17ca2243974453f7b7c1447c58b47e675a11ed4d4992e85d
SSDEEP

6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Score

8^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 5 IoCs

Processes:

rundll32.exe

flow pid process

14 4348 rundll32.exe
23 4348 rundll32.exe
24 4348 rundll32.exe
25 4348 rundll32.exe
39 4348 rundll32.exe
Deletes itself 1 IoCs

Processes:

xdrsm.exe

pid process

2588 xdrsm.exe
Executes dropped EXE 1 IoCs

Processes:

xdrsm.exe

pid process

2588 xdrsm.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

4348 rundll32.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

flow	pid	process
14	4348	rundll32.exe
23	4348	rundll32.exe
24	4348	rundll32.exe
25	4348	rundll32.exe
39	4348	rundll32.exe

pid	process
2588	xdrsm.exe

pid	process
2588	xdrsm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\ffhimhs\\sdpaeh.dll\",Verify"	rundll32.exe

Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.

Query Registry
T1012

Peripheral Device Discovery
T1120

System Information Discovery
T1082

Processes:

rundll32.exe

description ioc process

File opened (read-only) \??\a: rundll32.exe
File opened (read-only) \??\b: rundll32.exe
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 rundll32.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

4348 rundll32.exe
Drops file in Program Files directory 2 IoCs

Processes:

xdrsm.exe

description ioc process

File opened for modification \??\c:\Program Files\ffhimhs xdrsm.exe
File created \??\c:\Program Files\ffhimhs\sdpaeh.dll xdrsm.exe

description	ioc	process
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

description	ioc	process
File opened for modification	\??\c:\Program Files\ffhimhs	xdrsm.exe
File created	\??\c:\Program Files\ffhimhs\sdpaeh.dll	xdrsm.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

3604 PING.EXE

pid	process
3604	PING.EXE

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

rundll32.exe

pid	process
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe
4348	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 4348 rundll32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exexdrsm.exe

pid process

1100 6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe
2588 xdrsm.exe

description	pid	process
Token: SeDebugPrivilege	4348	rundll32.exe

pid	process
1100	6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe
2588	xdrsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.execmd.exexdrsm.exe

description	pid	process	target process
PID 1100 wrote to memory of 1436	1100	6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe	cmd.exe
PID 1100 wrote to memory of 1436	1100	6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe	cmd.exe
PID 1100 wrote to memory of 1436	1100	6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe	cmd.exe
PID 1436 wrote to memory of 3604	1436	cmd.exe	PING.EXE
PID 1436 wrote to memory of 3604	1436	cmd.exe	PING.EXE
PID 1436 wrote to memory of 3604	1436	cmd.exe	PING.EXE
PID 1436 wrote to memory of 2588	1436	cmd.exe	xdrsm.exe
PID 1436 wrote to memory of 2588	1436	cmd.exe	xdrsm.exe
PID 1436 wrote to memory of 2588	1436	cmd.exe	xdrsm.exe
PID 2588 wrote to memory of 4348	2588	xdrsm.exe	rundll32.exe
PID 2588 wrote to memory of 4348	2588	xdrsm.exe	rundll32.exe
PID 2588 wrote to memory of 4348	2588	xdrsm.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe
"C:\Users\Admin\AppData\Local\Temp\6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1100

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\xdrsm.exe "C:\Users\Admin\AppData\Local\Temp\6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1436

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- Runs ping.exe
PID:3604

C:\Users\Admin\AppData\Local\Temp\xdrsm.exe
C:\Users\Admin\AppData\Local\Temp\\xdrsm.exe "C:\Users\Admin\AppData\Local\Temp\6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2588

\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\Program Files\ffhimhs\sdpaeh.dll",Verify C:\Users\Admin\AppData\Local\Temp\xdrsm.exe
4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4348

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Program Files\ffhimhs\sdpaeh.dll
Filesize
228KB

MD5
272ad3134318751f8322b55d22f9421c

SHA1
77b7dd941e1330ecf7d2ca64f08d63d60cbaf07a

SHA256
1275ae4730eb73183ad118cc42a85d78368f382ff45bbcfebb6d4c6a417432c1

SHA512
5863ea5580bf218de6cf0dcbfe37043da82b71a077b4ae1812638763c4f8a0032f7f59e2d1fa6b4eec52849432c9863f249692bcd3f75d83ec43832fd94bf08a

Download Submit
C:\Users\Admin\AppData\Local\Temp\xdrsm.exe
Filesize
408KB

MD5
1259001d0e2ed908857aadabbac875da

SHA1
01c758021449cec680b7d85a9a56fc359c42b3c2

SHA256
906fcbc5339443848eb1080cb08e4fd349ee2e7da06c54f9abd5e380c371ea1e

SHA512
150e003ea6094717e55bb8ad3078ebc06d2de7f993108e7043a60291f19502355f6f46aff600e95156f7f84c303a5ef1f8ac4c17db3697d3ca757811890c5a68

Download Submit
memory/1100-0-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/1100-2-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2588-7-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4348-10-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/4348-11-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/4348-13-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download