9d7030256950ab804ca430c3bf305f087dd41d5e1cf46c254d8357e1ded8d164

Analysis

max time kernel
153s
max time network
47s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19/09/2022, 09:25

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General

Target

9d7030256950ab804ca430c3bf305f087dd41d5e1cf46c254d8357e1ded8d164.dll
Size

29KB
MD5

608b48cb9671b72721f262a16e4bd86c
SHA1

a3989fcfe22f78e60367dc34140364d374bbb478
SHA256

9d7030256950ab804ca430c3bf305f087dd41d5e1cf46c254d8357e1ded8d164
SHA512

ff01b77565baa6cd0aa24d6a824726f3705256f66419af1447093199be891048002bf97ec1c48b254eb66ae165dfee0216cf429dcf9aca92dca5b4193a52629d
SSDEEP

768:oPT0ZH76u/h3P58P/Kr7UYQhpNn2bAmjw:CT0V71R0khepN2s

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 5 IoCs

pid	Process
964	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.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\Run\	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\yayaBSlI.dll,#1"	rundll32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\yayaBSlI.dll	rundll32.exe
File created	C:\Windows\SysWOW64\yayaBSlI.dll	rundll32.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A30B575B-0E87-446B-BB58-DD22D0F61DE0}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A30B575B-0E87-446B-BB58-DD22D0F61DE0}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A30B575B-0E87-446B-BB58-DD22D0F61DE0}\InprocServer32\ = "C:\\Windows\\SysWow64\\yayaBSlI.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A30B575B-0E87-446B-BB58-DD22D0F61DE0}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe
1948	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
964	rundll32.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 964	1184	rundll32.exe	26
PID 1184 wrote to memory of 964	1184	rundll32.exe	26
PID 1184 wrote to memory of 964	1184	rundll32.exe	26
PID 1184 wrote to memory of 964	1184	rundll32.exe	26
PID 1184 wrote to memory of 964	1184	rundll32.exe	26
PID 1184 wrote to memory of 964	1184	rundll32.exe	26
PID 1184 wrote to memory of 964	1184	rundll32.exe	26
PID 964 wrote to memory of 1948	964	rundll32.exe	27
PID 964 wrote to memory of 1948	964	rundll32.exe	27
PID 964 wrote to memory of 1948	964	rundll32.exe	27
PID 964 wrote to memory of 1948	964	rundll32.exe	27
PID 964 wrote to memory of 1948	964	rundll32.exe	27
PID 964 wrote to memory of 1948	964	rundll32.exe	27
PID 964 wrote to memory of 1948	964	rundll32.exe	27

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d7030256950ab804ca430c3bf305f087dd41d5e1cf46c254d8357e1ded8d164.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d7030256950ab804ca430c3bf305f087dd41d5e1cf46c254d8357e1ded8d164.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:964
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Windows\system32\yayaBSlI.dll,a
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    PID:1948

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:\Windows\SysWOW64\yayaBSlI.dll

Filesize
29KB

MD5
608b48cb9671b72721f262a16e4bd86c

SHA1
a3989fcfe22f78e60367dc34140364d374bbb478

SHA256
9d7030256950ab804ca430c3bf305f087dd41d5e1cf46c254d8357e1ded8d164

SHA512
ff01b77565baa6cd0aa24d6a824726f3705256f66419af1447093199be891048002bf97ec1c48b254eb66ae165dfee0216cf429dcf9aca92dca5b4193a52629d

Download Submit
\Windows\SysWOW64\yayaBSlI.dll

Filesize
29KB

MD5
608b48cb9671b72721f262a16e4bd86c

SHA1
a3989fcfe22f78e60367dc34140364d374bbb478

SHA256
9d7030256950ab804ca430c3bf305f087dd41d5e1cf46c254d8357e1ded8d164

SHA512
ff01b77565baa6cd0aa24d6a824726f3705256f66419af1447093199be891048002bf97ec1c48b254eb66ae165dfee0216cf429dcf9aca92dca5b4193a52629d

Download Submit
\Windows\SysWOW64\yayaBSlI.dll

Filesize
29KB

MD5
608b48cb9671b72721f262a16e4bd86c

SHA1
a3989fcfe22f78e60367dc34140364d374bbb478

SHA256
9d7030256950ab804ca430c3bf305f087dd41d5e1cf46c254d8357e1ded8d164

SHA512
ff01b77565baa6cd0aa24d6a824726f3705256f66419af1447093199be891048002bf97ec1c48b254eb66ae165dfee0216cf429dcf9aca92dca5b4193a52629d

Download Submit
\Windows\SysWOW64\yayaBSlI.dll

Filesize
29KB

MD5
608b48cb9671b72721f262a16e4bd86c

SHA1
a3989fcfe22f78e60367dc34140364d374bbb478

SHA256
9d7030256950ab804ca430c3bf305f087dd41d5e1cf46c254d8357e1ded8d164

SHA512
ff01b77565baa6cd0aa24d6a824726f3705256f66419af1447093199be891048002bf97ec1c48b254eb66ae165dfee0216cf429dcf9aca92dca5b4193a52629d

Download Submit
\Windows\SysWOW64\yayaBSlI.dll

Filesize
29KB

MD5
608b48cb9671b72721f262a16e4bd86c

SHA1
a3989fcfe22f78e60367dc34140364d374bbb478

SHA256
9d7030256950ab804ca430c3bf305f087dd41d5e1cf46c254d8357e1ded8d164

SHA512
ff01b77565baa6cd0aa24d6a824726f3705256f66419af1447093199be891048002bf97ec1c48b254eb66ae165dfee0216cf429dcf9aca92dca5b4193a52629d

Download Submit
\Windows\SysWOW64\yayaBSlI.dll

Filesize
29KB

MD5
608b48cb9671b72721f262a16e4bd86c

SHA1
a3989fcfe22f78e60367dc34140364d374bbb478

SHA256
9d7030256950ab804ca430c3bf305f087dd41d5e1cf46c254d8357e1ded8d164

SHA512
ff01b77565baa6cd0aa24d6a824726f3705256f66419af1447093199be891048002bf97ec1c48b254eb66ae165dfee0216cf429dcf9aca92dca5b4193a52629d

Download Submit
memory/964-64-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/964-55-0x0000000074BB1000-0x0000000074BB3000-memory.dmp

Filesize
8KB

Download
memory/964-65-0x00000000001A0000-0x00000000001A4000-memory.dmp

Filesize
16KB

Download
memory/964-66-0x00000000001D0000-0x00000000001D4000-memory.dmp

Filesize
16KB

Download
memory/1948-68-0x00000000000F0000-0x00000000000F4000-memory.dmp

Filesize
16KB

Download
memory/1948-67-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/1948-69-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download