3f36ef0f5232d3b7106186b51c7f68cff06305ff15ae8c516b63fa125cd052e1

General

Target

3f36ef0f5232d3b7106186b51c7f68cff06305ff15ae8c516b63fa125cd052e1.exe
Size

406KB
MD5

f0dd41313bd4d1f339800898c5fb9c54
SHA1

d9857cf7ba2478c1c9cec7f6fe6beb2fe048b4b3
SHA256

3f36ef0f5232d3b7106186b51c7f68cff06305ff15ae8c516b63fa125cd052e1
SHA512

749fd1c9e6ea144a4002fb879baa87ccf2bdca4889eeabf1f582191c46679070c231acdb9b7ab1c24c824790c65e0e9a8bfc0ccbf4c54654c7f12cbc48093469
SSDEEP

12288:vdDU6g13sJd1fm/+yb3O2jg82ydU/DdKumy:vdE3sJd1fm/+yb3OYg84/JHJ

Score

9^/10

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/824-12-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/824-14-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/824-17-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023305-2.dat	UPX
behavioral2/files/0x000700000002349d-8.dat	UPX
behavioral2/memory/824-11-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/824-12-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/824-14-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/824-17-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
4860	madmy.exe

Executes dropped EXE 2 IoCs

pid	Process
4860	madmy.exe
824	ovi.exe

Loads dropped DLL 1 IoCs

pid	Process
824	ovi.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\wkaqk\\ovi.exe \"c:\\Program Files\\wkaqk\\ovivb.dll\",Viewer"	ovi.exe

Enumerates connected drives 3 TTPs 23 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

description	ioc	Process
File opened (read-only)	\??\g:	ovi.exe
File opened (read-only)	\??\h:	ovi.exe
File opened (read-only)	\??\r:	ovi.exe
File opened (read-only)	\??\w:	ovi.exe
File opened (read-only)	\??\x:	ovi.exe
File opened (read-only)	\??\b:	ovi.exe
File opened (read-only)	\??\j:	ovi.exe
File opened (read-only)	\??\m:	ovi.exe
File opened (read-only)	\??\p:	ovi.exe
File opened (read-only)	\??\u:	ovi.exe
File opened (read-only)	\??\y:	ovi.exe
File opened (read-only)	\??\a:	ovi.exe
File opened (read-only)	\??\i:	ovi.exe
File opened (read-only)	\??\k:	ovi.exe
File opened (read-only)	\??\s:	ovi.exe
File opened (read-only)	\??\t:	ovi.exe
File opened (read-only)	\??\v:	ovi.exe
File opened (read-only)	\??\z:	ovi.exe
File opened (read-only)	\??\e:	ovi.exe
File opened (read-only)	\??\l:	ovi.exe
File opened (read-only)	\??\n:	ovi.exe
File opened (read-only)	\??\o:	ovi.exe
File opened (read-only)	\??\q:	ovi.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

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	ovi.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\wkaqk	madmy.exe
File created	\??\c:\Program Files\wkaqk\ovivb.dll	madmy.exe
File created	\??\c:\Program Files\wkaqk\ovi.exe	madmy.exe
File opened for modification	\??\c:\Program Files\wkaqk\ovi.exe	madmy.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

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3972	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
824	ovi.exe
824	ovi.exe
824	ovi.exe
824	ovi.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	824	ovi.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2192	3f36ef0f5232d3b7106186b51c7f68cff06305ff15ae8c516b63fa125cd052e1.exe
4860	madmy.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2192 wrote to memory of 1044	2192	3f36ef0f5232d3b7106186b51c7f68cff06305ff15ae8c516b63fa125cd052e1.exe	83
PID 2192 wrote to memory of 1044	2192	3f36ef0f5232d3b7106186b51c7f68cff06305ff15ae8c516b63fa125cd052e1.exe	83
PID 2192 wrote to memory of 1044	2192	3f36ef0f5232d3b7106186b51c7f68cff06305ff15ae8c516b63fa125cd052e1.exe	83
PID 1044 wrote to memory of 3972	1044	cmd.exe	85
PID 1044 wrote to memory of 3972	1044	cmd.exe	85
PID 1044 wrote to memory of 3972	1044	cmd.exe	85
PID 1044 wrote to memory of 4860	1044	cmd.exe	89
PID 1044 wrote to memory of 4860	1044	cmd.exe	89
PID 1044 wrote to memory of 4860	1044	cmd.exe	89
PID 4860 wrote to memory of 824	4860	madmy.exe	90
PID 4860 wrote to memory of 824	4860	madmy.exe	90
PID 4860 wrote to memory of 824	4860	madmy.exe	90

C:\Users\Admin\AppData\Local\Temp\3f36ef0f5232d3b7106186b51c7f68cff06305ff15ae8c516b63fa125cd052e1.exe
"C:\Users\Admin\AppData\Local\Temp\3f36ef0f5232d3b7106186b51c7f68cff06305ff15ae8c516b63fa125cd052e1.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\madmy.exe "C:\Users\Admin\AppData\Local\Temp\3f36ef0f5232d3b7106186b51c7f68cff06305ff15ae8c516b63fa125cd052e1.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1044
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:3972
- - C:\Users\Admin\AppData\Local\Temp\madmy.exe
    C:\Users\Admin\AppData\Local\Temp\\madmy.exe "C:\Users\Admin\AppData\Local\Temp\3f36ef0f5232d3b7106186b51c7f68cff06305ff15ae8c516b63fa125cd052e1.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4860
  - - \??\c:\Program Files\wkaqk\ovi.exe
      "c:\Program Files\wkaqk\ovi.exe" "c:\Program Files\wkaqk\ovivb.dll",Viewer C:\Users\Admin\AppData\Local\Temp\madmy.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files\wkaqk\ovi.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
C:\Users\Admin\AppData\Local\Temp\madmy.exe

Filesize
406KB

MD5
c01813e3677951bdeae9a33e47a6c0e0

SHA1
63f4d52a89f15f19aefbac7a27efd718e28efc84

SHA256
6d0440ceaffa1df12ac4d75acad6701f95bc45deb9344758e66f80f3ec45e723

SHA512
6820664853ebf60b564361a2c0aeb8b3a54f4a3e5748bac2b41beb7ce4a504f5839794f3198d63a6891b1a92bb52a78456c6896a2530ab04d455923c757291df

Download Submit
\??\c:\Program Files\wkaqk\ovivb.dll

Filesize
89KB

MD5
b63a85b84516283db3041726cea6c22d

SHA1
ae129d7869c71baf2d39ee665575ab22122ccce4

SHA256
e5aa4161588b23f9666e31fc79b559b7d33d4ebf0ecf52eeee461e833d4c15a5

SHA512
a5e8741930e8f4fad6880a3f222500d70f4673befb245dd8671f3c66d9c90da5f095123c3d36c49fc31b09e3dcb2076d1a6bbeb23042ef40959db3af74c3a7b1

Download Submit
memory/824-11-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/824-12-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/824-14-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download
memory/824-17-0x0000000010000000-0x0000000010033000-memory.dmp

Filesize
204KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads