9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d

Analysis

max time kernel
151s
max time network
47s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04/12/2022, 02:20

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General

Target

9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d.exe
Size

269KB
MD5

1f41a328c73922939c08f4a158d5698a
SHA1

b4edfed1c5a4b6b91673bcd31e5aca8156447b3a
SHA256

9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d
SHA512

31246829afa4ee018ffc1016b5d43d4450ffe41e94b711adbb6fca6e449b622a6d46e2f63fa8a5efefa1b334be13258f00e98074db22a5aef8e6996b42891277
SSDEEP

6144:bwXhRyq926tFIGBFrQee3Kc7vcIVYAEymU4v+GakMFcK:bwL7FrcHvcSEu+XaDFc

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1712	dynbnkyy.exe

Deletes itself 1 IoCs

pid	Process
2012	cmd.exe

Loads dropped DLL 3 IoCs

pid	Process
2012	cmd.exe
2012	cmd.exe
1712	dynbnkyy.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1988	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
112	PING.EXE

Suspicious behavior: EnumeratesProcesses 52 IoCs

pid	Process
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1988	taskkill.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe
1712	dynbnkyy.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 304 wrote to memory of 2012	304	9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d.exe	27
PID 304 wrote to memory of 2012	304	9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d.exe	27
PID 304 wrote to memory of 2012	304	9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d.exe	27
PID 304 wrote to memory of 2012	304	9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d.exe	27
PID 2012 wrote to memory of 1988	2012	cmd.exe	29
PID 2012 wrote to memory of 1988	2012	cmd.exe	29
PID 2012 wrote to memory of 1988	2012	cmd.exe	29
PID 2012 wrote to memory of 1988	2012	cmd.exe	29
PID 2012 wrote to memory of 112	2012	cmd.exe	31
PID 2012 wrote to memory of 112	2012	cmd.exe	31
PID 2012 wrote to memory of 112	2012	cmd.exe	31
PID 2012 wrote to memory of 112	2012	cmd.exe	31
PID 2012 wrote to memory of 1712	2012	cmd.exe	32
PID 2012 wrote to memory of 1712	2012	cmd.exe	32
PID 2012 wrote to memory of 1712	2012	cmd.exe	32
PID 2012 wrote to memory of 1712	2012	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d.exe
"C:\Users\Admin\AppData\Local\Temp\9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 304 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d.exe" & start C:\Users\Admin\AppData\Local\dynbnkyy.exe -f
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f /pid 304
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1988
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 3 127.1
    3⤵
    - Runs ping.exe
    PID:112
- - C:\Users\Admin\AppData\Local\dynbnkyy.exe
    C:\Users\Admin\AppData\Local\dynbnkyy.exe -f
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:1712

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

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\dynbnkyy.exe

Filesize
269KB

MD5
1f41a328c73922939c08f4a158d5698a

SHA1
b4edfed1c5a4b6b91673bcd31e5aca8156447b3a

SHA256
9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d

SHA512
31246829afa4ee018ffc1016b5d43d4450ffe41e94b711adbb6fca6e449b622a6d46e2f63fa8a5efefa1b334be13258f00e98074db22a5aef8e6996b42891277

Download Submit
C:\Users\Admin\AppData\Local\dynbnkyy.exe

Filesize
269KB

MD5
1f41a328c73922939c08f4a158d5698a

SHA1
b4edfed1c5a4b6b91673bcd31e5aca8156447b3a

SHA256
9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d

SHA512
31246829afa4ee018ffc1016b5d43d4450ffe41e94b711adbb6fca6e449b622a6d46e2f63fa8a5efefa1b334be13258f00e98074db22a5aef8e6996b42891277

Download Submit
\Users\Admin\AppData\Local\dynbnkyy.exe

Filesize
269KB

MD5
1f41a328c73922939c08f4a158d5698a

SHA1
b4edfed1c5a4b6b91673bcd31e5aca8156447b3a

SHA256
9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d

SHA512
31246829afa4ee018ffc1016b5d43d4450ffe41e94b711adbb6fca6e449b622a6d46e2f63fa8a5efefa1b334be13258f00e98074db22a5aef8e6996b42891277

Download Submit
\Users\Admin\AppData\Local\dynbnkyy.exe

Filesize
269KB

MD5
1f41a328c73922939c08f4a158d5698a

SHA1
b4edfed1c5a4b6b91673bcd31e5aca8156447b3a

SHA256
9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d

SHA512
31246829afa4ee018ffc1016b5d43d4450ffe41e94b711adbb6fca6e449b622a6d46e2f63fa8a5efefa1b334be13258f00e98074db22a5aef8e6996b42891277

Download Submit
\Users\Admin\AppData\Local\dynbnkyy.exe

Filesize
269KB

MD5
1f41a328c73922939c08f4a158d5698a

SHA1
b4edfed1c5a4b6b91673bcd31e5aca8156447b3a

SHA256
9ef50ae7587d43c1c3f58b7567676803f9cd830b383e916082e64294deedce9d

SHA512
31246829afa4ee018ffc1016b5d43d4450ffe41e94b711adbb6fca6e449b622a6d46e2f63fa8a5efefa1b334be13258f00e98074db22a5aef8e6996b42891277

Download Submit
memory/304-57-0x0000000001000000-0x00000000010A5000-memory.dmp

Filesize
660KB

Download
memory/304-54-0x0000000076121000-0x0000000076123000-memory.dmp

Filesize
8KB

Download
memory/304-55-0x0000000001000000-0x00000000010A5000-memory.dmp

Filesize
660KB

Download
memory/1712-67-0x0000000000DF0000-0x0000000000E95000-memory.dmp

Filesize
660KB

Download
memory/1712-68-0x0000000001000000-0x00000000010A5000-memory.dmp

Filesize
660KB

Download
memory/1712-69-0x0000000001000000-0x00000000010A5000-memory.dmp

Filesize
660KB

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