d158361da75771187f5a05578de4b22e32122681c4b9d602e796f4b957cc1f5f

General

Target

d158361da75771187f5a05578de4b22e32122681c4b9d602e796f4b957cc1f5f.exe
Size

183KB
MD5

1c19dbbde0b0dd7c5d4d90c26363330c
SHA1

45fe06938193d95795ff296b4e47ffd02ae8b303
SHA256

d158361da75771187f5a05578de4b22e32122681c4b9d602e796f4b957cc1f5f
SHA512

22b94f228dff470d1273066faaf981f792e72ffdd95ec0ccc0455ea427575d1d6eaa3582208610be24ba289ede8e93635e647124449779ebdd7e591bba20f41d
SSDEEP

3072:mzW+DiW9iLo+GnHk5EBagqRBINsDoASqoGTzqcQ6zaxWYX6RAfR:hKELo7NHiYsDoANxQ62xWzAfR

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3020	server.exe
4900	server.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0006000000022e0c-133.dat	upx
behavioral2/files/0x0006000000022e0c-134.dat	upx
behavioral2/memory/3020-135-0x0000000000400000-0x0000000000438000-memory.dmp	upx
behavioral2/files/0x0006000000022e0c-140.dat	upx
behavioral2/memory/3020-145-0x0000000000400000-0x0000000000438000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce	d158361da75771187f5a05578de4b22e32122681c4b9d602e796f4b957cc1f5f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	d158361da75771187f5a05578de4b22e32122681c4b9d602e796f4b957cc1f5f.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 3020 set thread context of 4900	3020	server.exe	82
PID 3020 set thread context of 0	3020	server.exe
PID 3020 set thread context of 0	3020	server.exe
PID 3020 set thread context of 0	3020	server.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4900	server.exe
4900	server.exe
4900	server.exe
4900	server.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3020	server.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 3020	4952	d158361da75771187f5a05578de4b22e32122681c4b9d602e796f4b957cc1f5f.exe	81
PID 4952 wrote to memory of 3020	4952	d158361da75771187f5a05578de4b22e32122681c4b9d602e796f4b957cc1f5f.exe	81
PID 4952 wrote to memory of 3020	4952	d158361da75771187f5a05578de4b22e32122681c4b9d602e796f4b957cc1f5f.exe	81
PID 3020 wrote to memory of 4900	3020	server.exe	82
PID 3020 wrote to memory of 4900	3020	server.exe	82
PID 3020 wrote to memory of 4900	3020	server.exe	82
PID 3020 wrote to memory of 4900	3020	server.exe	82
PID 3020 wrote to memory of 4900	3020	server.exe	82
PID 3020 wrote to memory of 4900	3020	server.exe	82
PID 3020 wrote to memory of 4900	3020	server.exe	82
PID 3020 wrote to memory of 0	3020	server.exe
PID 3020 wrote to memory of 0	3020	server.exe
PID 3020 wrote to memory of 0	3020	server.exe
PID 3020 wrote to memory of 0	3020	server.exe
PID 3020 wrote to memory of 0	3020	server.exe
PID 3020 wrote to memory of 0	3020	server.exe
PID 3020 wrote to memory of 0	3020	server.exe
PID 3020 wrote to memory of 0	3020	server.exe
PID 3020 wrote to memory of 0	3020	server.exe
PID 3020 wrote to memory of 0	3020	server.exe
PID 3020 wrote to memory of 0	3020	server.exe
PID 3020 wrote to memory of 0	3020	server.exe
PID 4900 wrote to memory of 2456	4900	server.exe	39
PID 4900 wrote to memory of 2456	4900	server.exe	39
PID 4900 wrote to memory of 2456	4900	server.exe	39
PID 4900 wrote to memory of 2456	4900	server.exe	39

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:2456
- C:\Users\Admin\AppData\Local\Temp\d158361da75771187f5a05578de4b22e32122681c4b9d602e796f4b957cc1f5f.exe
  "C:\Users\Admin\AppData\Local\Temp\d158361da75771187f5a05578de4b22e32122681c4b9d602e796f4b957cc1f5f.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4952
- - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\server.exe
    C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\server.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3020
  - - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\server.exe
      "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\server.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:4900

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\server.exe

Filesize
125KB

MD5
52f056e11cac14f34db785723540dd83

SHA1
7eebf1f2419589253829d9edd8e4139721bde28f

SHA256
59e00b2457ca100b2b1dd53dba98b083043917a377e2597f1d20f78d22249744

SHA512
bfbb458d3bb637c7bb9cb35e6ec32b7214726f4d991a4555c6ff863b339d2df4428e3be833ad9206778ebf703487c8094cb27a1e2792f70b7ef50a1bd9b3c802

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\server.exe

Filesize
125KB

MD5
52f056e11cac14f34db785723540dd83

SHA1
7eebf1f2419589253829d9edd8e4139721bde28f

SHA256
59e00b2457ca100b2b1dd53dba98b083043917a377e2597f1d20f78d22249744

SHA512
bfbb458d3bb637c7bb9cb35e6ec32b7214726f4d991a4555c6ff863b339d2df4428e3be833ad9206778ebf703487c8094cb27a1e2792f70b7ef50a1bd9b3c802

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\server.exe

Filesize
125KB

MD5
52f056e11cac14f34db785723540dd83

SHA1
7eebf1f2419589253829d9edd8e4139721bde28f

SHA256
59e00b2457ca100b2b1dd53dba98b083043917a377e2597f1d20f78d22249744

SHA512
bfbb458d3bb637c7bb9cb35e6ec32b7214726f4d991a4555c6ff863b339d2df4428e3be833ad9206778ebf703487c8094cb27a1e2792f70b7ef50a1bd9b3c802

Download Submit
memory/0-141-0x0000000000400000-0x0000000000408960-memory.dmp

Filesize
34KB

Download
memory/2456-147-0x000000007FFF0000-0x000000007FFF7000-memory.dmp

Filesize
28KB

Download
memory/3020-132-0x0000000000000000-mapping.dmp

Download
memory/3020-135-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3020-145-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4900-138-0x0000000000000000-mapping.dmp

Download
memory/4900-139-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/4900-146-0x0000000000400000-0x0000000000408960-memory.dmp

Filesize
34KB

Download
memory/4900-148-0x0000000010000000-0x0000000010013000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing