526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403

Analysis

max time kernel
181s
max time network
199s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
14/10/2022, 10:06

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General

Target

526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403.exe
Size

848KB
MD5

6f9bde6960f97b503b7c76cb727770cd
SHA1

767bc290bf4fb369fcc7553d78f8c23dbe512205
SHA256

526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403
SHA512

0ec861db946c4533b7f3c2ffec6c073f8bc0d3408474406465ac726e3d32393b3a7f110e0686a71fc3335885b78c643645bdbb58a89ebd460ef846776f39a257
SSDEEP

24576:440++sj6vOQ5uVq1gpLiV+vclI+St8l36RD3:440g6l5upLiYclAt8l3E

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
884	server.exe

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	526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403.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\\\""	526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\VERSION.dll	526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403.exe
File opened for modification	C:\Windows\SysWOW64\ADVAPI32.dll	526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403.exe
File opened for modification	C:\Windows\SysWOW64\COMCTL32.dll	526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
884	server.exe
884	server.exe
884	server.exe
884	server.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3736 wrote to memory of 884	3736	526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403.exe	81
PID 3736 wrote to memory of 884	3736	526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403.exe	81
PID 3736 wrote to memory of 884	3736	526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403.exe	81
PID 884 wrote to memory of 1040	884	server.exe	36
PID 884 wrote to memory of 1040	884	server.exe	36
PID 884 wrote to memory of 1040	884	server.exe	36
PID 884 wrote to memory of 1040	884	server.exe	36
PID 884 wrote to memory of 1040	884	server.exe	36
PID 884 wrote to memory of 1040	884	server.exe	36

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1040
- C:\Users\Admin\AppData\Local\Temp\526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403.exe
  "C:\Users\Admin\AppData\Local\Temp\526c8777d5b282fc0624b289b08a2b9c17f6b1aa3ccb7b9616b0ef7852081403.exe"
  2⤵
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3736
- - 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 behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
28KB

MD5
6f8c474fd7ce012eb4adf3fbfd28d08e

SHA1
ad3c02291f2b5995c3c3657e4dc330ae692ecbeb

SHA256
0d1f7323734fad97096545a7ea3622ac5dc7a891932566c3b5f50571c15d1ca7

SHA512
780881e8033f7a7fe04c879e3073319211cf233d6c76b026c913cba09b1434a42555b55f66901e9e30698fd876f1ada95b93412d0a2bba3749895265d2c2790e

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

Filesize
28KB

MD5
6f8c474fd7ce012eb4adf3fbfd28d08e

SHA1
ad3c02291f2b5995c3c3657e4dc330ae692ecbeb

SHA256
0d1f7323734fad97096545a7ea3622ac5dc7a891932566c3b5f50571c15d1ca7

SHA512
780881e8033f7a7fe04c879e3073319211cf233d6c76b026c913cba09b1434a42555b55f66901e9e30698fd876f1ada95b93412d0a2bba3749895265d2c2790e

Download Submit
memory/884-137-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/884-138-0x0000000010000000-0x0000000010011000-memory.dmp

Filesize
68KB

Download
memory/1040-136-0x000000007FFC0000-0x000000007FFC6000-memory.dmp

Filesize
24KB

Download
memory/3736-132-0x0000000001000000-0x00000000010E0000-memory.dmp

Filesize
896KB

Download
memory/3736-139-0x0000000001000000-0x00000000010E0000-memory.dmp

Filesize
896KB

Download